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Photocarrier transfer induced by Ndelta→° Wdelta+ in tungsten trioxide/carbon nitride for dual-path production of hydrogen peroxide towards ciprofloxacin degradation
Yue, Junpeng1; Yang, Hanpei1; Wang, Shi1; Liu, Chen2; Wang, Lina1
2024
摘要Photo self-Fenton catalyst is a promising candidate for solar energy conversion and environmental remediation. Here we reported a Tungsten trioxide/carbon nitride (WO3/CN) in which the surficial amino groups on CN are inserted into the WO3 matrix, forming coordinate covalently Ns--*Ws+ in construction of an intimate S-scheme heterojunction. The intimantance promotes the transfer of photocarriers under light irradiation. The nanohybrids produced hydrogen peroxide (H2O2) in a rate about 20 times of pristine CN. A dual-path architecture in which H2O2 are produced via hole-water oxidation and electron-oxygen reduction was poposed. It is founded that ciprofloxacin also involved in production of H2O2 by their deprotonation to superoxide anions, and holes and hydroxyl radicals effectively attack the weak sites in skeleton of ciprofloxacin. This work suggests a great sig-nificance of strategy in self-producing of H2O2 in utilizing solar energy and molecular oxygen for water, particularly the surface water decontamination.
关键词Carbon nitride Chemically bonded interface S-scheme
DOI10.1016/j.jcis.2023.09.154
发表期刊JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
卷号653页码:981-991
通讯作者Yang, Hanpei(yanghanpei@hhu.edu.cn)
收录类别SCI
WOS记录号WOS:001088725000001
语种英语