Photoelectrocatalytic hydrogen evolution and synchronous degradation of organic pollutants by pg-C3N4/β-FeOOH S-scheme heterojunction

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外文摘要：Crafting photoelectrocatalytic materials with robust oxidation-reduction properties for simultaneous hydrogen evolution and pollutant degradation poses a formidable challenge.In this study,a pg-C3N4/β-FeOOH S-scheme heterostructure with a special energy band structure was developed by anchoring porous pg-C3N4 on needle shaped β-FeOOH.Functioning as a hole extraction layer,needle-leaf-like β-FeOOH can facilitate efficient hole migration and enhance charge transport.Remarkably,the optimized 0.2-pg-C3N4/β-FeOOH could degrade 78％of ofloxacin(OFLO)in 90 min.The organic pollutants could absorb a large number of holes,which prompted a greater proportion of photogenerated electrons to actively participate in the hydrogen evolution reaction at the cathode.Consequently,the hydrogen production of 0.2-pg-C3N4/β-FeOOH reached 1452.88 μmol cm-2 h-1,exhibiting a notable increase of 61.81-165.12 μmol cm-2 h-1 compared with that in the absence of pollutants.Experimental and theoretical calculation results underscore that this investigation is grounded in a distinctive electron and hole dual channel transfer mechanism.These findings offer novel insights for the future development of S-scheme heterojunction photoelec-trocatalytic materials capable of concurrently degrading pollutants and promoting hydrogen evolution.

外文关键词：

photoelectrocatalysishydrogen evolutiondegradationsynchronousS-scheme heterojunction

作者：

LI XiBao、HAN Tao、ZHOU YingTang、XIE Yu、LUO YiDan、HUANG JunTong、CHEN Zhi、DENG Fang

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作者单位：

School of Materials Science and Engineering,Nanchang Hangkong University,Nanchang 330063,China

National-Local Joint Engineering Research Center of Heavy Metal Pollutants Control and Resource Utilization,Nanchang Hangkong University,Nanchang 330063,China

Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control,National Engineering Research Center for Marine Aquaculture,Marine Science and Technology College,Zhejiang Ocean University,Zhoushan 316022,China

基金：

国家自然科学基金国家自然科学基金国家自然科学基金Jiangxi Province Academic and Technical Leader of Major DisciplinesKey Project of Natural Science Foundation of Jiangxi ProvinceDouble Thousand Talent Plan of Jiangxi ProvinceState Key Laboratory of Highefficiency Utilization of Coal and Green Chemical EngineeringZhejiang Province Key Research and Development Project

项目编号：

22262024222720705227206320232BCJ2200820232ACB2040072022-K312023 C01191

出版年：

2024

DOI：

10.1007/s11431-023-2604-x

中国科学:技术科学(英文版)

中国科学院

中国科学:技术科学(英文版)

CSTPCDEI

影响因子：1.056

ISSN：1674-7321

年,卷(期)：2024.67(4)

参考文献量62