S型纤维异质结实现高效纯水光合成过氧化氢
Boosting the photosynthesis of hydrogen peroxide directly from pure water and air over S-scheme fiber heterojunction
李可 1梅骏伦 1李静萍 1刘易斯 1王国宏 1胡蝶 1严素定 1王楷2
作者信息
- 1. Hubei Key Laboratory of Pollutant Analysis and Reuse Technology,Research Center for Transition and Development of Resources-exhausted City,College of Chemistry and Chemical Engineering,Huangshi Key Laboratory of Prevention and Control of Soil Pollution,Hubei Normal University,Huangshi 435002,China
- 2. Hubei Key Laboratory of Pollutant Analysis and Reuse Technology,Research Center for Transition and Development of Resources-exhausted City,College of Chemistry and Chemical Engineering,Huangshi Key Laboratory of Prevention and Control of Soil Pollution,Hubei Normal University,Huangshi 435002,China;Engineering Research Center for Clean Production of Textile Printing and Dyeing,Ministry of Education,Wuhan Textile University,Wuhan 430073,China;School of Chemistry,Chemical Engineering and Biotechnology,Nanyang
- 折叠
摘要
太阳能驱动在纯水中生成过氧化氢(H2O2)被认为是一种具有成本效益且环保的方法.然而,大多数光催化剂只有在存在牺牲供体的情况下才会表现出性能,从而限制了其实用性.本文通过静电纺丝辅助离子交换策略,制备出了S型纤维异质结Nb2O5@NiS(NONS),作为光催化产过氧化氢的催化剂.通过原位X射线光电子能谱分析研究了S型电荷转移路径.通过捕获实验和电子自旋共振光谱,证实了单线态氧(1O2)与H2O2的形成有关.这项工作还揭示了通过制造纤维异质结光催化剂产生H2O2的另一种反应途径.
Abstract
The generation of solar H2O2 through the re-action of O2 and H2O is a cost-effective and environmental-friendly procedure.Nevertheless,most photocatalysts are only active when sacrificial donors are present,thereby limiting their practicality.Herein,the S-scheme fiber heterojunction Nb2O5@NiS(NONS)was fabricated as a catalyst for photo-catalytic hydrogen peroxide evolution through an electro-spinning-assisted ion exchange strategy.In situ X-ray photoelectron spectroscopy analysis was then used to in-vestigate the excellent performance(0.48 mmol g-1)of the optimized photocatalyst NONS-30 obtained directly from pure water and air through the S-scheme charge transfer path.Following scavenger capture experiments and electron spin resonance spectroscopy,an overlooked pathway was dis-covered that implicated 1O2 in the formation of H2O2.This work also revealed an alternative reaction pathway to produce H2O2 by fabricating fiber heterojunction photocatalysts.
关键词
hydrogen peroxide/photocatalysis/nanofibers/het-erojunction/S-scheme mechanismKey words
hydrogen peroxide/photocatalysis/nanofibers/het-erojunction/S-scheme mechanism引用本文复制引用
基金项目
National Natural Science Foundation of China(52104254)
National Natural Science Foundation of China(22378104)
Natural Science Foundation of Hubei Province(2022CFB504)
Open Subject of Engineering Research Center for Clean Production of Textile Printing and Dyeing,Ministry of Education(2023GCZX008)
出版年
2024
NETL
NSTL
万方数据