Synthesis of Z-scheme heterojunction photocatalysts CuO/Cu2O/Cu@Co3O4 with enriched oxygen vacancies for efficient degradation of tetracycline antibiotics

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-01-24 DOI:10.1016/j.mseb.2025.118042

Wenrui Zhao, Changcheng Lin, Chenlong Shi, Zanpeng Zuo, Hongliang Ge, Qiong Wu, Pingzhan Si, Yanting Yang

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Abstract

The mesoporous Co₃O₄ nanosheets have been employed as a promising supporting material to prepare O_VX-CuO/Cu₂O/Cu@Co₃O₄ Z-type photocatalysts. The strategic modification of Co₃O₄ nanosheets with CuO/Cu₂O/Cu nanoparticles, combined with NaBH₄ treatment, led to the formation of a Z-scheme heterostructure and the generation of abundant oxygen vacancies (O_Vs). These modifications were essential for facilitating the rapid diffusion of photo-induced electron-hole pairs and enhancing visible-light absorption, thereby significantly improving the photocatalytic efficiency of O_V1.2-CuO/Cu₂O/Cu@Co₃O₄, which exhibited the highest catalytic efficiency and exceptional stability for Tetracycline (TC) removal, achieving a rate constant of 0.359 min⁻¹ and a 95 % removal efficiency within 10 min. The investigation, including ESR tests and trapping experiments, revealed that •OH and •O₂⁻ are crucial components in the photocatalytic process. This work shed light on the design and development of highly active photocatalysts for environmental remediation applications.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.