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Fine structural interpretation is one of the effective methods to find favorable structural traps and targets. Aiming at the fault interpretation of Jurassic Badaowan Fm in Madong area of Xiayan fault zone is not fine and structural characteristics are not implemented, the structural characteristics of Jurassic Badaowan Fm are implemented and favorable traps are found through the study of seismic, well logging and geological comprehensive methods. The results show that the structure of Jurassic Badaowan Fm in Madong area is high in the north and low in the south. The first member of Badaowan Fm is a delta front subaqueous distributary channel deposit, which is a hydrocarbon enrichment zone. Oil and gas are adjusted along the relay of deep and shallow faults, and the great fault zone and the inherited uplifting zone are favorable accumulation areas of Jurassic Badaowan Fm in Madong area. In this paper, the relationship between deep and shallow fault system and hydrocarbon distribution of Badaowan Fm in Madong area is systematically reviewed for the first time. Combined with the palaeohigh distribution, three favorable hydrocarbon accumulation zones are identified, which provides favorable targets for exploring the hydrocarbon accumulation potential of Badaowan Fm.

Benzoxazines, renowned for their self-curing properties, high glass transition temperature, and exceptional thermal stability, have faced environmental and biotoxicity concerns despite their remarkable performance. Combining high-performance, ecofriendly and degradable benzoxazines remains a challenge. In this work, we synthesized an entirely bio-based benzoxazine resin, 2,6-bis(3-(furan-2-ylmethyl)-8-methoxy-2-phenyl-3,4-dihydro-2H-benzo[e][1,3]oxazin-6-yl)tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxine (VE-BZ), from natural raw materials, including vanillin, erythritol, furfurylamine, and natural benzaldehyde. The presence of the bis(acetal) structure, furanic structure, and benzene ring-branched chain structure in the resin confers favorable adhesive strength, high carbon residue, self-extinguishing ability, and outstanding thermal stability to VE-BZ. Moreover, VE-BZ can undergo dual-site curing and complete degradation through the synergistic effects of acid and heat, enabling its reuse in benzoxazine synthesis. The acid used for both synthesis and degradation is bio-based citric acid, eliminating non-biobased catalysts or additives from the entire process. This approach embodies a comprehensive green chemistry closed-loop process. In essence, this research offers valuable perspectives on seamlessly combining exceptional performance with eco-friendly attributes in the realm of benzoxazine resin materials. [ABSTRACT FROM AUTHOR]

Cubic nanoparticles of CeO2 were partly covered on the tetrahedron surface of γ-Bi2O3 through a hydrothermal reaction and then a calcination process to construct a novel S-type γ-Bi2O3/CeO2 heterojunction. The optimized sample removed 96% of lomefloxacin and 81% of tetracycline. During the cycling test, the photocatalytic efficiency of lomefloxacin and tetracycline was maintained above 87% and 80%, respectively, for five consecutive cycles. According to XRD and Raman spectra characterization, the sample after cycling held a stable crystal structure. Holes, OH−˙, O2˙, and electrons participated in the degradation of lomefloxacin, while tetracycline was removed via the effect of the former three active substances. Based on theoretical calculation and experimental tests, the excellent photocatalytic activity of γ-Bi2O3/CeO2 came from the fast transfer of charge carriers along the S-type path. Moreover, the CB electrons of γ-Bi2O3 and VB holes of CeO2 were preserved to generate free radicals for antibiotic degradation. The colony numbers of Escherichia coli were 1.50 × 10−6 CFU mL−1 and 1.39 × 10−6 CFU mL−1 in solutions after the degradation of the two pollutants, which represents the non-toxicity of the final products. The γ-Bi2O3/CeO2 sample has a potential application for antibiotic removal from modern sewage. [ABSTRACT FROM AUTHOR]