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• The Multi-step Linear Prediction Method is proposed to enhance spectral resolution. • The relative error of the spectrum enhanced by the MSLP method is only 0.28%. • The method successfully identified the NO spectral features in the 1880–1900 cm−1 band. Fourier Transform Infrared (FTIR) spectroscopy is a widely used technique for passive remote sensing applications, enabling the detection and quantification of various atmospheric constituents, including trace gases and pollutants. High-resolution solar spectra play a crucial role in research pertaining to atmospheric vertical profiles and analysis of atmospheric composition. However, the improvement of spectral resolution is subject to certain limitations due to hardware constraints. In this research, we propose a novel approach called the multi-step linear prediction (MSLP) method based on sliding windows to enhance the spectral resolution of passive remote sensing FTIR spectra, thereby improving the accuracy and reliability of atmospheric composition analysis. The MSLP method improves the spectral resolution of passive remote sensing FTIR spectra by using the linear prediction technique and iterative extrapolation of interference signals, which involves selecting an appropriate window length. In simulations, the MSLP method significantly enhanced the spectral resolution of passive remote sensing FTIR spectra, achieving spectral line separation for water vapor (H 2 O) and nitric oxide (NO), as well as the acquisition of low-concentration NO spectra. Experimental results demonstrate that compared to the measured high-resolution (0.2 cm−1) spectrum, the relative error of the spectrum enhanced by the MSLP method is only 0.28 %. Therefore, the MSLP method effectively achieves passive remote sensing FTIR spectral resolution enhancement, leading to more accurate identification and quantification of target compounds. [ABSTRACT FROM AUTHOR]

Abstract In the past decade, poly(carbonate ether)polyols, or CO 2 -polyols, have been synthesized by the copolymerization of CO 2 and propylene oxide (PO) with a double metal cyanide (DMC) catalyst in the presence of various chain transfer agents. CO 2 -polyols show great potential use as substitutes for polyols derived from fossil feedstock in the polyurethane industry. Brookfield viscosity tests have revealed the importance of primary hydroxyl (1° OH) content in the reactivity of CO 2 -polyols; in particular, the low 1° OH content of CO 2 -polyols severely limits their application in foam materials. Incorporation of more carbonate linkages has proven to be only moderately efficient for preparing CO 2 -polyols with high 1° OH content, e.g., 19F NMR spectroscopy indicates that the 1° OH content of a CO 2 -polyol can increase from 13% to 39% when the carbonate content in the CO 2 -polyol is increased from 26.1% to 80.0%. In this study, the PO end-capping route was developed using a strong Lewis acid, such as tris(pentafluorophenyl)borane (FAB) as a catalyst, and a CO 2 -polyol with 1° OH content of 60% was synthesized. Graphical abstract Image Highlights • 19F NMR spectroscopy was used to analyze the 1° OH contents of CO 2 -polyols. • Insertion of CO 2 was helpful for increasing 1° OH% of CO 2 -polyols by regulating the ring-opening mode of PO. • Brookfield viscosity tests revealed the importance of 1° OH content in the reactivity of CO 2 -polyols. • CO 2 -polyol with 1° OH content of 60% was synthesized by PO end-capping using a strong Lewis acid as a catalyst. [ABSTRACT FROM AUTHOR]

This paper reports the synthesis of soybean oil-based terminal epoxides (SOTE) through the saponification of soybean oil followed by epoxidation and their application for the production of new biodegradable polycarbonates via the intergration of CO 2 . Three processes for the production of soap from soybean oil were compared. Epoxidation reaction parameters, including the molar ratio of epichlorohydrin (EPCH) to soap, phase transfer catalyst (cetyltrimethylammonium bromide, CTAB) loading, and reaction time, were optimized based on the response surface methodology via a Box-Behnken experimental design. The optimal reaction parameters for the production of soybean oil-based terminal epoxide were a molar ratio of EPCH to soap at 17.3:1 with 2.4% CTAB based on 1 mol of soap under refluxing for 28.4 min. Epoxidation yields of 94.3% were obtained with these optimized reaction parameters. The synthesized SOTE were then polymerized with CO 2 for the production of new biodegradable polycarbonates, which had a molecular weight of 5100 g/mol with a dispersity of 1.22. [ABSTRACT FROM AUTHOR]

Carbon dioxide is becoming increasingly important synthetic feedstock for chemicals and materials, since it is abundant, low-cost, non-toxic. One growing area in CO 2 chemistry utilization is the development of catalysts for the polymerization of CO 2 and epoxides to prepare CO 2 based copolymers, including high molecular weight aliphatic polycarbonates and low molecular weight poly(carbonate-ether) polyols. Among all the aliphatic polycarbonates, poly(propylene carbonate) (PPC) has the best opportunity for scale-up commercialization. PPC is not only cheap since it contains over 40 wt% CO 2 , but it also exhibits good biodegradability, which has wide application in throw-away packaging materials, or even gas barrier films. Poly(carbonate-ether) polyols are low-molecular weight polyether carbonates with terminating hydroxyl groups, which are potential large scale raw materials in polyurethane industry. Herein, the recent progress of the CO 2 based polymers will be highlighted, and the future in this area will be discussed. [ABSTRACT FROM AUTHOR]

Abstract: High-molecular-weight poly(propylene carbonate) (PPC) was synthesized using a Zndouble metal cyanide (Co-DMC) catalyst. The catalytic activity reached as high as 60.6kg polymer/g Co-DMC after 10h when the low-molecular-weight polyether polyol initiator was not used. In contrast, production of the by-product propylene carbonate (PC) significantly decreased to below 1.0wt%. Considering the carbonate content in the alternative copolymer as 100%, the carbonate content of the obtained PPC ranged between 34% and 49%. The carbonate content was highly important for the air stability of PPC. The number average molecular weight of the as-polymerized PPC with a carbonate content of 48% reached 130kg/mol. However, it decreased to ca. 60kg/mol after 24h of storage at 70°C, and further dropped to ca. 40kg/mol after 7d. This result confirmed that severe oxidative degradation occurred for the low-carbonate-content PPC. Air stability significantly improved by adding antioxidant 1010 (tetrakis[methylene(3,5-di-(tert-butyl)-4-hydroxy-hydro cinnamate)] methane). Similarly, a more air stable PPC was also prepared by raising its carbonate content. Our work provided a new explanation on the wide existence of low-molecular-weight PPC in DMC catalyst literature. Strategies for obtaining high-molecular-weight PPC were also disclosed. [Copyright &y& Elsevier]

Abstract: Poly(propylene carbonate) (PPC), a biodegradable plastic produced by alternating copolymerization of carbon dioxide and propylene oxide, is amorphous at glass-transition temperature of ∼35 °C; therefore, it becomes brittle at temperatures <20 °C. This article reports on the synthesis of low molecular weight urethanes, such as 1,6-bis(hydroxyethyl urethane)hexane (BEU), 1,6-bis(hydroxyisopropyl urethane)hexane (BPU), and 1,6-bis(methyl urethane)hexane (HDU) bearing rich NH and Cby a non-isocyannate method and their use as plasticizers for PPC. The hydrogen-bonding interaction between BPU and PPC was found to be significantly more effective as compared with BEU and HDU, and the highest hydrogen-bonding interaction fraction reached 5.2% in a PPC/BPU blend with 15 wt% BPU loading. Solubility parameters calculated from Hoy’s method, in combination with differential scanning calorimetric analysis, indicated that HDU and BPU were miscible with PPC at a molecular scale, while BEU was immiscible with PPC. Usually, plasticizing is generally accompanied by sacrificing of tensile strength; however, it was encouraging to observe that the elongation at break for PPC/HDU blend with 10 wt% of HDU loading reached 727% – an increase 53 times that of pure PPC – while the tensile strength was maintained at 30 MPa, which was comparable with that of linear low-density polyethylene. The hydrogen-bonding interaction generated a remarkable improvement in the mechanical performance of PPC; it not only confined the migration of the plasticizer to the surface and thus ensured stability of the blending material over time, but it also maintained the mechanical strength of the plasticized PPC. [Copyright &y& Elsevier]

Abstract: Biodegradable poly(propylene carbonate) (PPC) was blended with o-lauroyl chitosan (OCS) by solution casting using chloroform as common solvent. FTIR and XPS confirmed hydrogen bonding interaction between PPC and OCS, which was saturated when OCS loading reached 20wt%. Because of the hydrogen bonding interaction, a 2–3°C increase in glass transition temperature and a 5% improvement (46–53°C) in weight loss temperature (T 5%) were observed in the PPC/OCS blend with OCS loading of 10–20wt%. The interaction was beneficial to improving the mechanical performance of PPC. The tensile strength, elongation at break, and Young''s modulus of the pure PPC film were 31MPa, 3.8%, and 392MPa, respectively. For the blend with 10wt% OCS loading, the effect of toughening was so substantial that the maximum elongation at break increased twofold to 8.1% and Young''s modulus increased nearly threefold to 1014MPa; the tensile strength and stress at break remained unchanged. [Copyright &y& Elsevier]

Crystallization kinetics of the Zr 70-x Ni 14+x Al 16 (x = 0, 5, 10, 15, and 20 at.%) metallic glasses (MGs) was investigated using the non-isothermal and isothermal methods, respectively. The crystallization of the Zr 70-x Ni 14+x Al 16 (x = 15 and 20 at.%) MGs proceeds by the nucleation and growth of Zr 2 Ni 3 Al 5 and Zr 6 NiAl 2 crystals. The crystallization sequence of the Zr 70-x Ni 14+x Al 16 (x = 0, 5, and 10 at.%) MGs can be concluded as follows: amorphous phase → amorphous phase + Zr 2 Ni 3 Al 5 + ZrNiAl crystals → Zr 6 NiAl 2 crystals. The crystallization kinetics of the initial and intermediate stages for the present system changes from the diffusion-controlled one-dimensional growth to two- and three-dimensional growth. Compared with the Zr 70-x Ni 14+x Al 16 (x = 15 and 20 at.%) MGs, the nucleation and growth during the initial crystallization of the Zr 70-x Ni 14+x Al 16 (x = 0, 5, and 10 at.%) MGs are relatively faster, which should be contributed to their lower activation energies for initial crystallization. The subsequent crystallization proceeds by a slower nucleation and growth compared with the Zr 70-x Ni 14+x Al 16 (x = 15 and 20 at.%) MGs, which should be suppressed by the endothermic phase transition from Zr 2 Ni 3 Al 5 and ZrNiAl crystals to Zr 6 NiAl 2 crystals. The present studies could give a complementary understanding on crystallization behaviors of metastable alloys. [ABSTRACT FROM AUTHOR]

Graphitic carbon materials are considered to be an important category of dielectric absorbers, but these materials are typically accompanied with poor impedance matching and unsatisfactory electromagnetic wave absorption (EMA) performance. Herein, engineered amorphous carbon is developed to produce hierarchical carbonaceous nanocomposites (HCNs) via crystallization-induced interfacial polymer self-assembly and carbonization, which is aimed at boosting dielectric polarization for enhancing EMA capability. By optimizing the polymer precursor species, graphitic carbon matrix, and carbonization temperature, the hierarchical architecture and N-bonding configurations, containing pyridinic N, pyrrolic N, and graphitic N, can be regulated for polarization relaxation loss and conductive loss. In addition, multiple reflection and scattering behavior are also beneficial for increasing EMA capability. Compared with those of the pure graphitic carbon matrix and related HCNs, the minimum reflection loss (RL min) of MWCNTs coated with polyimide-derived amorphous carbon at 700 °C (MWCNT/C(PI-EDA)-700) is −45.7 dB at a matched thickness of 3.6 mm with a filler loading of only 5 wt%, and its effective absorption bandwidth (EAB, RL min < −10 dB) is 3.9 GHz. In summary, based on the systematic analysis of 16 carbonaceous absorbers, in this study, not only the intrinsic EMA mechanism of HCNs is revealed, but also new avenues for designing and fabricating high-efficiency dielectric absorbers are opened. [Display omitted] [ABSTRACT FROM AUTHOR]

To overcome the brittleness of poly(propylene carbonate) (PPC), rubbery non-isocyanate polyurethane (NIPU) with rich hydrogen bonding moiety was synthesized for toughening PPC. Debonding phenomenon of NIPU was observed during the impact process of PPC/NIPU blends, which was beneficial for toughening PPC. When the NIPU loading increased to 10 wt%, the unnotched impact strength increased 3 times compared with neat PPC. The NIPU dispersed uniformly and a transition from brittle to marginally tough occurred when L / d reached a critical value, 1.74, where L and d were center-to-center distance and the diameter of the particle, respectively. The debonding of NIPU accounted for the increase of toughness, and shear yielding of the matrix was limited around the microvoids. When the NIPU loading reached 13 wt%, NIPU flocculated in the matrix leading to decline in toughness. The equilibrium between self-associating hydrogen bonding and intermolecular one formed between PPC and NIPU affected their miscibility and thereby the morphology of the blends. [ABSTRACT FROM AUTHOR]

The novel iron complexes [N,N′-bis-2-pyridinylmethylene-cyclohexane-1,2- diamine]iron(II) chloride (1) and [N,N′-bis-2-pyridinylmethyl-cyclohexane-1,2-diamine]iron(II) chloride (2) were designed, and they showed excellent activity for the coupling reaction epoxides and CO2 to generate the corresponding cyclic carbonates. When complex 2 was used alone as a catalyst for the cycloaddition of propylene oxide (PO) and CO2, the PO conversion was 95% at 130°C and 4MPa CO2 pressure in 4h. Once a co-catalyst like tetrabutylammonium bromide (TBAB) was added, the conversion could reach 100% with nearly 100% selectivity for propylene carbonate (PC), with a turnover number (TON) of 1000 at 100°C and 4MPa CO2 pressure in 6h, i.e. the quantitative synthesis of propylene carbonate can be realized. Moreover, in combination with TBAB, the iron complex can also catalyze the cycloaddition of cyclohexene oxide (CHO) and epichlorohydrin (ECH) with CO2 to produce the corresponding cyclic carbonates, and the cyclohexene carbonate obtained was mainly the cis-isomer. [ABSTRACT FROM AUTHOR]

The incorporation of diverse macromolecular blocks into CO 2 -based polycarbonates offers a promising approach for tailoring the properties of polycarbonates for special needs. In this work, we report for the first time the synthesis and characterization of an ABA triblock copolymer polycarbonate- b -polyalkenamer- b -polycarbonate in combination of ROCOP and ROMP via a one-pot route from CO 2 , epoxides and cycloalkenes. Cis -2-butene-1,4-diol as the bifunctional chain transfer agent was used as a "bridge" for the combination of different blocks as well as an effective regulator for the molecular weight of the polymers. In the one-pot reaction, the conversion of cycloalkenes reached 99.9% within 0.5 h, while the conversion of CHO was initially marginal at 0.5% but gradually increased to 99.7% after 24 h. The significant discrepancy in reaction rates between the two processes enables efficient synergistic reactions within the one-pot system. Specifically, hydroxyl-telechelic polyalkenamer is initially formed via ROMP and subsequently acts as an active species for ROCOP when coordinated with the porphyrin Al catalyst. This one-pot strategy provides a unique and simple method for controllably constructing functional polycarbonates with single-modal molecular weight distributions. By integrating the advantages of polyalkenamers and polycarbonates, this approach proves to be a viable solution for addressing the unsatisfactory thermal properties of aliphatic polycarbonates. [Display omitted] • CO 2 -based functional polycarbonate prepared via one pot reaction in combination of ROCOP and ROMP. • Bifunctional chain transfer agent as a bridge for polycarbonate and polyalkenamer to achieve block copolymer. • ABA block structure confirmed by 1H NMR, DOSY and MALDI-TOF analysis. [ABSTRACT FROM AUTHOR]

Mesoporous nanospheres are of great importance in the cutting-edge fields of energy, catalysis and sensor technology, mainly because of their multilevel architectures, tunable meso-structures, specific compositions and soft-templated synthesis approaches. In this review, the control mechanisms of aqueous polymer self-assembly are first elaborated based on the correlated driving forces, methods, and initial conditions. Then, recent advances of co-assembly-driven nanocomposite formation techniques toward mesoporous nanosphere engineering using amphiphilic block copolymers and low-molecular-weight surfactants as soft templates are systematically reviewed. Here, soft templates and organic or inorganic precursor species as well as their co-assembly processes and formation mechanisms are elaborated to thoroughly understand co-assembly-driven nanocomposite formation techniques. After soft template removal through high-temperature pyrolysis or solvent extraction, mesoporous nanospheres can be obtained. Generally, this review presents insights and a guideline to co-assembly-driven engineering of mesoporous nanospheres and promotes the development of this emerging interdisciplinary research field at the frontier between organic polymer co-assembly and inorganic nanomaterial fabrication. Co-assembly-driven nanocomposite formation techniques show great potential in manufacturing mesoporous nanospheres with multilevel architectures, in which the controllable soft template self-assemblies, precursor species and their nanocomposite formation techniques enable mesoporous nanospheres with tunable meso-structures and compositions, soft-templated synthesis approaches and functional applications. [Display omitted] • A systematic summary of soft template-directed co-assembly techniques. • In-depth analysis on mesoporous nanospheres with controllable meso-structures. • Perspectives on the opportunities and challenges of mesoporous nanospheres. [ABSTRACT FROM AUTHOR]

A m +B n +C 1 hyperbranched star copolymers with multidodal molecular weight distribution produced from one-pot one-batch process exhibit an increased influence of number of maromolecules and decreased influence of intramolecular cyclization on the number raito of monomeric structural units contrast A m +B n hyperbranched polymers so as to regulate hyperbranched star topology for an unexpected aqueous self-assembly. [Display omitted] • One-pot one-batch synthesis of Am+Bn+C1 hyperbranched star copolymers. • A convenient expression of N A /N B for the analysis of intramolecular cyclization. • Effect of intramolecular cyclization and number of macromolecules on topology. Hyperbranched star copolymers are important soft materials that have been employed for aqueous self-assembly and bioapplication, but their one-pot one-batch synthesis strategy and relevant topology are rarely discussed. In this contribution, we produce hyperbranched star poly(vinyl ether ester)s (mPEG- hb -PVEEs) amphiphiles with multimodal molecular weight distribution via one-pot one-batch Am+Bn+C1 (m ≥ 2, n ≥ 3) step-growth polymerization. Based on the topological analysis of these hyperbranched star copolymers, a convenient expression of the number ratio of monomeric structural units (N A /N B) is deduced to describe the cyclic defect of intramolecular cyclization only by using proton nuclear magnetic resonance spectroscopy. The introduction of long-chain terminators and the change in the molar feed ratio of A 2 :B 3 :C 1 considerably affect the N A /N B so as to give rise to increased influence of number of macromolecules and decreased influence of intramolecular cyclization, which are then responsible for an aqueous self-assembly behavior of mPEG- hb -PVEEs amphiphiles. Overall, this study opens new possibilities for the precise description of intramolecular cyclization and controllable synthesis of hyperbranched star copolymers via one-pot Am+Bn+C1 step-growth polymerization. [ABSTRACT FROM AUTHOR]

Hollow engineering is an effective approach to optimize impedance matching and modify magnetic-dielectric synergy for enhanced wave absorption capability, but the composition and microstructure manipulation of metal-organic frameworks (MOFs)-derived absorbers remains a challenge. Herein, a novel and facile polymerization-induced assembly-etching strategy is proposed for the manufacture of wrinkled zeolitic imidazolate framework-67@polypyrrole (ZIF-67@PPy) microcages using ammonium persulfate catalyzed pyrrole polymerization and concomitant acid etching. Then, hollow cobalt@N-doped carbon microcages (Co@NCMs) with distorted carbon shells, rich core-shell heterojunctions, highly dispersive Co nanoparticles, and abundant heterogeneous interfaces are produced via high-temperature pyrolysis process, which eliminates the need for additional templates and etching agents. Moreover, the hollow microcage structure with interior cavities and mesopores provides superior impedance matching and lightweight characteristics to the absorbers. Therefore, the hollow absorbers demonstrate a minimum reflection loss of −50.4 dB and an effective absorption bandwidth (EAB) of 3.85 GHz at 2.7 mm with a 10 wt% filler loading. In general, the polymerization-indued assembly-etching strategy inspires the hollow engineering of MOF derivatives, and facilitates the development of superior electromagnetic wave absorption (EMA) materials. [Display omitted] [ABSTRACT FROM AUTHOR]

CO 2 -based polycarbonates are among the most promising eco-friendly polymers with excellent biodegradability and biocompatibility. However, the poor performance of conventional CO 2 -based polycarbonates such as poly(propylene carbonate) (PPC) and poly(cyclohexene oxide) (PCHC) limits their application. Herein, a series of siloxane functionalized CO 2 -based polycarbonates were obtained via terpolymerization of carbon dioxide (CO 2), propylene oxide (PO), and [2-(3, 4-epoxycyclohexyl)-ethyl] trimethoxysilane (TMSO) using a SalenCoCl/PPNCl catalyst system. A systematic study of these polycarbonate's thermal, mechanical, and surface properties was conducted by tuning the ratio between TMSO and PO. The siloxane units offered polycarbonate with a higher surface energy, resulting in a water contact angle of 110° and a significant improvement in glass transition temperature (T g) and decomposition temperature (T d). Additionally, the micro-crosslinked structure formed by the hydrolysis and condensation of methoxysilane groups provided to the polycarbonate's remarkable mechanical strength, with a high tensile strength of 46 MPa. As a result, a novel CO 2 -based polycarbonate derived from cost-efficient silane coupling agents and CO 2 has shown promising results as an alternative to rigid plastics used in industry. [Display omitted] • Siloxane functionalized polycarbonates were prepared from carbon dioxide and epoxides. • Micro-crosslinked structure of polycarbonate endows its excellent mechanical properties. • Methoxysilane groups increase surface energy and permit post-modification. [ABSTRACT FROM AUTHOR]

Integrating organic multiple-carbonyl polymers and inorganic mesoporous metal oxides on highly conductive carbon nanotubes is a promising strategy to manufacture high-performance lithium-ion battery anodes; however, developing multicomponent nanocomposites with a hierarchical architecture still remain challenging. Herein, we design and produce hierarchically nanostructured carbon nanotube (CNT)/polyimide (PI)/mesoporous Fe 2 O 3 (meso-Fe 2 O 3 /PI/CNT) ternary nanocomposite materials via a sequential assembly and high-temperature dehydration strategy, aiming to fabricate flexible PI-supported meso-Fe 2 O 3 stacked on a conductive CNT supporting skeleton. By controlling the linear PI mainchain through the comonomer composition, different PI assemblies can grow on the surface of CNT to anchor meso-Fe 2 O 3 nanoparticles as well as alleviate the structural strain resulting from the volume expansion of meso-Fe 2 O 3 in its phase conversion reaction. Considering the porosity and cavity, the mesoporous Fe 2 O 3 architecture can not only buffer its volume expansion but also accommodate a large number of electrolytes to promote Li + transport. In addition, the hierarchical architecture endows the meso-Fe 2 O 3 /PI/CNT nanocomposite materials with a high structural stability during the electrochemical process. Benefiting from these structural advantages, Li-ion batteries assembled with meso-Fe 2 O 3 /PI-EDA/CNT electrodes deliver high capacities of 708.9, 608.2, and 454.5 mAh g−1 at 0.1, 0.3, and 0.5 A g−1, respectively. Even at a high current density of 1 A g−1, a discharge capacity of 95.6 mAh g−1 is still obtained after 3000 cycles. This work provides a promising route to integrate multiple-carbonyl polymers and mesoporous metal oxides with the aim of developing multicomponent organic-inorganic composite anode for Li-ion battery. [Display omitted] • Hierarchically tubular organic-inorganic nanocomposite anode from self-assembly-assisted fabrication technique is reported. • Polyimide assemblies with controllable architecture for organic anode material and strain buffer interlayer. • Fe 2 O 3 nanoparticle with mesoporous structures for inorganic anode material. • The organic-inorganic nanocomposite anode shows desirable lithium-ion battery performance. [ABSTRACT FROM AUTHOR]

The combined application of organic materials and chemical fertilizers is an effective approach for improving crop productivity and soil quality. Purple soil is characterized by low N, P, and organic C contents that influence crop productivity. However, the optimal organic materials that can be used to improve purple soil quality and crop yields remain to be clarified. Here, we conducted a 13-year field experiment (from 2007 to 2019) in Sichuan Province, China, intending to assess the long-term influence of various combinations of organic materials and chemical fertilizers on soil enzymatic activities, microbial communities, and crop yields. Treatments included chemical fertilizer alone (NPK), NPK plus returned straw (NPKS), NPK plus pig manure (NPKM), NPK plus fungal residue (NPKF), and NPK plus green manure (Vicia villosa Rothvar.) (NPKG). Results showed that NPKM and NPKF treatments significantly increased the average yields of maize (7.9 and 6.4%, respectively) and wheat (15.7 and 12.9%, respectively) relative to NPK treatment. The highest sustainable yield index value of maize and wheat was observed in NPKF treatment. The long-term application of fungal residue (NPKF) significantly increased soil organic C and available P contents, relative to NPK、NPKS and NPKG treatments, and soil organic C content increased from 6.95 to 9.12 ± 1.06 g kg−1 and available P content from 6.87 to 12.26 ± 2.23 mg kg−1. Relative to NPK treatment, NPKF treatment significantly enhanced soil microbial biomasses (C, N, and P) and soil C-, N- and P-cycling enzyme activities but significantly decreased soil pH. The soil enzyme index following NPKF treatment was significantly higher relative to other treatments and was 208.6% higher than NPK treatment. Additionally, relative to NPK treatment, NPKF treatment altered soil microbial community structure, and significantly increased the rate of G+/G− and cy19/18:1ω7c. Soil microbial biomasses N, Nitrate N, and available P were the main factors regulating the change of microbial community in purple soil. We, therefore, conclude that NPKF treatment is an effective fertilization strategy for improving purple soil quality and crop yields. • NPKM and NPKF treatments significantly increased average yields of wheat and maize. • NPKF treatment significantly increased soil organic C and available P contents. • NPKF treatment significantly enhanced soil C-, N- and P-cycling enzyme activities and microbial biomasses. • NPKF treatment altered soil microbial community, and significantly increased the rate of G+/G− and cy19/18:1ω7c. [ABSTRACT FROM AUTHOR]