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Bisphenol A (BPA) is a well-known endocrine-disrupting chemical (EDC) used as a plastic enhancer in producing polycarbonate resins to manufacture hard plastics. Due to strict limitations on the manufacturing and utilization of BPA, several bisphenol substitutes, bisphenol F (BPF), bisphenol S (BPS), and bisphenol AF (BPAF), have been developed to replace it in various applications. Because of their widespread use in food containers, infant bottles, and reusable water bottles, bisphenols (BPs) have been identified in different environmental circumstances, including drinking water, seawater, industrial effluent, and endocrine systems such as human blood, urine, and breast milk. However, locating and analyzing them in different conditions has proven to be challenging. Therefore, there is a need to reduce the prevalence of BPs in the environment. The significance of advanced treatment options for treating and eliminating BPA and its alternatives from water bodies are reviewed. Also, the research gaps and future scopes are discussed in this review article. According to the literature survey, adsorption and photocatalytic degradation provide synergistic benefits for environmental challenges because of their substantial adsorption Q5 capacity, high oxidation capability, and low cost compared to alternative individual treatment options. HIGHLIGHTS The occurrence of bisphenols in aquatic systems has been addressed.; The aggressive impact of endocrine-disrupting chemicals in the environmental matrices is outlined.; The pollutant's sustainability and structural characteristics are analyzed.; The cost-effective treatment strategies for simultaneous BPs reduction are discussed.; The significances of BPs on the integrated treatment approach are detailed.;

The study assesses the efficacy of CeO2 nanoparticles synthesised via the hydrothermal method for UV‐induced catalytic activity in decomposing cobalt complexes. Various analyses, including X‐ray diffractometry (XRD), Raman spectroscopy, scanning electron microscopy (SEM), high‐resolution transmission electron microscopy (HR‐TEM), and UV‐Vis spectrophotometry were employed to investigate the impact of cobalt on cerium oxide's morphology, optical, electrochemical, and microstructural characteristics. The XRD analysis revealed a cubic structure in the fluorite‐type pattern, primarily oriented along the (111) direction. Raman spectroscopy supported these findings, identifying an active mode peak at 464 cm−1 and indicating the presence of F2g cubic fluorite. SEM imaging displayed cleavage and uniform, densely packed grains. Elemental analysis confirmed the presence of Ce, O, and Co, corroborated by X‐ray Photoelectron Spectroscopy (XPS) data. Optical measurements indicated a band gap starting at 3.03 eV, which decreased with increasing Co ratio, reaching 2.9 eV at 4 % cobalt incorporation. Furthermore, cyclic voltammetry experiments demonstrated that Co‐doped samples exhibited enhanced ion storage capacity. These comprehensive analyses underscore the potential of Co‐doped CeO2 nanoparticles for UV‐induced catalytic activity, offering valuable insights into their structural and functional properties. [ABSTRACT FROM AUTHOR]

Over the past few decades, metal oxides have attracted significant research attention due to their wide-ranging applicability in nearly every field of study. In the present study, we focus on photochemical reactions promoted by using nanoscale MoO3, TiO2 and MoO3/TiO2 nanocomposite. The nanocomposite facilitated charge separation and elevated photo-destruction efficiency of [Cu(dien)(1-MeIm)Cl]Cl complex in a mixed solvent medium via an interlayer pathway. The synthesized complex and the nanomaterials were validated by various instrumental techniques. The lifetime of charge carriers (τ = 36 ns) is higher than bare materials proving its superior photo efficacy. Introduction of 40% acetonitrile (ACN:H2O) solvent gave a higher photoreduction rate constant for Cu(II) complex by MoO3/TiO2 (5.733 × 10–2 s−1) denoting the better photocatalytic nature of nanocomposite rather than the prepared bare nanomaterials. The findings from the study unambiguously reveal that even a small amount of surface incorporation significantly shifts the material for blue LED application. Thus, it paves the way for unleashing its diverse uses, comprehending its distinctive attributes and investigating its possibilities. [ABSTRACT FROM AUTHOR]

Nano CeO2/SnO2 composite was successfully synthesised using the hydrothermal method and is one of the most widely used photocatalysts in metal-oxide semiconductors and has good photocatalytic activity. Experimental and spectroscopic approaches confirmed the structure and shape of the nanocomposite according to XRD, HR-TEM and SEM results. Spectral peaks are shown to migrate with the CeO2/SnO2 composite in experiments using Raman and opacity (photoluminescence). The magnetic properties of the composite were thoroughly investigated. The different oxidation states of Ce and Sn, which act as active sites in the electrocatalytic activity of this nanocomposite material, were observed using X-ray photoelectron spectroscopy. The capability of the CeO2/SnO2 composite was demonstrated by additional galvanic charge–discharge (GCD) experiments at various current densities, cyclic voltammetry (CV) measurements at different scan rates (the maximum capacitance value of 718 F g−1 from CV and 721 A g−1 from GCD). Reduction of cis-[Co(phen)2Cl2]Cl by nano-CeO2/SnO2 was traced for the production of Co(II) ion, which was shown to be catalytically efficient by UV–Vis response curves. Thus, the enhanced photocatalytic activity of the nano-CeO2/SnO2 material can be attributed to the excellent charge separation and electron transport for the reduction efficiency of the photogenerated charge carriers. [ABSTRACT FROM AUTHOR]

In this work, maghemite (γ-Fe2O3) and magnetite (Fe3O4) nanoparticles were synthesized using coprecipitation method, and characterization was done using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and Fourier transform infra-red spectroscopy (FTIR). The size of these particles was found to be in the range from 20 to 100 nm, and these particles were used as nanoadsorbents for the removal of heavy metal ions like chromium and copper from the artificial wastewater. Adsorption depends on the optimum conditions of parameters such as pH (2.5 and 6.5), contact time (60 and 80 minutes), and dosages at room temperature for chromium and copper that were observed with a removal efficiency of 92 %. These particles showed remarkable efficiency in removal of metals. Further, these particles were regenerated for reuse, and desorption was done using HCl and NaOH effluent for copper and chromium metals, respectively. The removals of pollutant enhanced with magnetic nanoparticles are evident with the obtained results. The separation factor (r) lies between 0 and 1, indicating favoring Langmuir isotherm for both chromium and copper ions. [ABSTRACT FROM AUTHOR]

Magnetic, cost-effective, heterojunction SnO2/ZnFe2O4nanocomposites were synthesized via. simple one-pot hydrothermal technique, and its phase formation, microstructure, morphology, chemical states and magnetism were examined by various characteristics. The photoconversion of mixed ligand involved cis-[CoIII(en)2(Im)Cl]Cl2 by SnO2/ZnFe2O4nanocomposite showed efficient catalytic activity compared to the bare SnO2 and ZnFe2O4 nanoparticles under the wavelength of 254 nm and 365 nm in neat water and binary solvents system. SnO2/ZnFe2O4 heterojunction photocatalyst showed enhanced electron donor–acceptor capacitance and diminished the recombination of electron–hole (e−/h+) pairs and efficient generation of photogenerated reactive species. The rate constant (k) of SnO2/ZnFe2O4 (0.0540 s−1) is higher than that of the SnO2 (0.0160 s−1) and ZnFe2O4 (0.157 s−1) in H2O/PriOH (70:30%) than in remain solvents system in catalytic conversion of Co(III)/(II) system. The photoactive mechanism of Co(III) complex by SnO2/ZnFe2O4nanocomposite and its corresponding bare nanoparticles were discussed in detail. [ABSTRACT FROM AUTHOR]

An investigation is conducted to understand the 'solvent tuning' of reactions and to obtain a quantitative measure of the relative importance of the influences of solvents. The correlation analysis revealed significant information on the effect of the solvent-solvent and solvent-solute interactions on reactivities.

In this study, cost-effective, environmentally friendly well-fabricated SnO2/TiO2 nanocomposite synthesized via hydrothermal route and the photocatalytic activity was validated using the (NH3-trz)[Fe(dipic)2] complex under ultra-violet illumination. The structural features of (NH3-trz)[Fe(dipic)2] complex and catalysts were systematically examined by various characteristics. The photoreactivity of the model compound (NH3-trz)[Fe(dipic)2] in water/binary solvent systems was investigated. The rate of photoreaction (k) of nanocomposite (0.1432 s−1) is higher than the SnO2 (0.0373 s−1) and TiO2 (0.1422 s−1) in H2O:PriOH (70:30%) than the rest of the solvents system. The pathways, mechanistic feature of accumulated reactive species on nanocomposite to induce adherent [Fe(dipic)2]− anion and photo-reductive products were studied. [ABSTRACT FROM AUTHOR]