In-suit generated Cu-ligand inducing full-spectrum selective photocatalytic degradation of organic pollutants containing phenol groups over Cu doping BiO2-x nanosheet: The synergistic effects of Cu-ligand and oxygen vacancies, and mechanism study

Yang, Zhixiong; Wang, Hui; Li, Yuan; Zhang, Gaoke

doi:10.1016/j.cej.2024.155810

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.155810

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In-suit generated Cu-ligand inducing full-spectrum selective photocatalytic degradation of organic pollutants containing phenol groups over Cu doping BiO2-x nanosheet: The synergistic effects of Cu-ligand and oxygen vacancies, and mechanism study

Zhixiong Yang,

Hui Wang,

Yuan Li

et al.

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2024

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Cited by 2 publications

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The Engineering Screen of Photoactive Nanozymes Based on N‐Containing Covalent Organic Frameworks for Antibacterial Application

Zhao,

Wang,

Jia

et al. 2024

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Covalent organic frameworks (COFs) are a class of highly efficient photocatalytic organic semiconductor materials, which have been developed for the design of photoactive nanozymes. Nitrogen (N)‐heterocycles could effectively improve their photocatalytic activity of COFs. However, the systematic exploration of photoactive nanozymes based on N‐containing COFs is still lacking. In this work, a series of N‐containing Schiff‐base linkages of COFs are designed and synthesized to explore high‐performance photoactive nanozymes. In addition, Fe ions are introduced through post‐modification of COFs, which can not only effectively extend the band‐edge absorption of COFs to the red‐light region and thereby broaden its biological applications, but also introduce single site of Fe to enrich the types of free radicals in the catalytic products. The activities of photoactive nanozymes based on N‐containing COFs are systematically studied, and their catalytic mechanisms are uncovered. Interestingly, it is not as commonly recognized that the more content of N, the better for photocatalysis or the construction of photoactive nanozyme. Furthermore, the selected photoactive nanozymes are used for antibacterial applications, which showed good activity against Escherichia coli.

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The Engineering Screen of Photoactive Nanozymes Based on N‐Containing Covalent Organic Frameworks for Antibacterial Application

Zhao,

Wang,

Jia

et al. 2024

Small

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Efficient Preparation of S-Scheme Ag/AgBr/BiOBr Heterojunction Photocatalysts and Implications for Degradation of Carbendazim: Mechanism, Pathway, and Toxicology

Wang,

Zhao,

Yang

et al. 2024

Langmuir

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Carbendazim (CBZ), as a highly effective benzimidazole fungicide, has a good control effect on various crops caused by fungi. However, excessive use of CBZ in water, atmosphere, soil, and crops has serious effects. The efficient degradation of CBZ is an effective way to reduce its toxic effect. In this work, the type of Sscheme Ag/AgBr/BiOBr heterojunction photocatalyst was effectively prepared by a simple one-step solvothermal in situ method and first applied to the mineralization and degradation of CBZ. The effects of the molar ratio of AgBr to BiOBr, catalyst dosage, CBZ concentration, pH value of the original solution, and inorganic salt ions on the photocatalytic degradation performance of CBZ were comprehensively studied. The results showed that, under visible light irradiation, 0.9-Ag/AgBr/BiOBr (0.9-AAB) exhibited the best photocatalytic degradation performance (88.9%) against the concentration at 10 mg/L of CBZ in original solutions with pH of 10. However, the degradation effect was also good at pH 7. After 90 min, the degradation efficiency reached 86.0%, corresponding to a TOC removal efficiency of 84.0%. The results indicate that the main active species are 1 O 2 and • O 2 − free radicals according to the free radical quenching experiments and electron spin resonance spectra. Combined with the XPS characterization results, the electron transfer mechanism of the S-scheme heterojunction was deeply revealed. Additionally, the degradation pathway of CBZ was proposed through both the intermediate identification and the theoretical calculation derived from the DFT Fukui index. Finally, the toxicity of CBZ and the degradation intermediates were predicted based on the T.E.S.T.

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In-suit generated Cu-ligand inducing full-spectrum selective photocatalytic degradation of organic pollutants containing phenol groups over Cu doping BiO2-x nanosheet: The synergistic effects of Cu-ligand and oxygen vacancies, and mechanism study

Cited by 2 publications

References 44 publications

The Engineering Screen of Photoactive Nanozymes Based on N‐Containing Covalent Organic Frameworks for Antibacterial Application

The Engineering Screen of Photoactive Nanozymes Based on N‐Containing Covalent Organic Frameworks for Antibacterial Application

Efficient Preparation of S-Scheme Ag/AgBr/BiOBr Heterojunction Photocatalysts and Implications for Degradation of Carbendazim: Mechanism, Pathway, and Toxicology

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