Visible-light-driven photocatalyst based upon metal-free covalent triazine-based frameworks for enhanced hydrogen production

Tan Zunkun; Zhang Peng; Chen QiaoshanFang ShengqiongHuang GuochengBi JinhongWu Ling

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Visible-light-driven photocatalyst based upon metal-free covalent triazine-based frameworks for enhanced hydrogen production

机译：Visible-light-driven光催化剂基础上不含金属的共价triazine-based框架提高制氢

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Photocatalytic H2 production via water splitting has emerged as an eco-friendly and green technology to efficiently utilize solar energy. Developing visible light active photocatalysts, especially the metal-free ones, is crucial to access this technology considering their economic and environmental benefits. Hence, a facile UV reduction method was adopted to fabricate a highly active metal-free photocatalyst by modifying covalent triazine-based frameworks (CTFs) with reduced graphene oxide (rGO). The optimized CTF composite with 2 wt% rGO exhibited a 4.3-fold activity enhancement compared with pristine CTFs, showing a prime H2 evolution efficiency of 894 μmol g−1 h−1. The contributions of rGO to the photocatalytic system and the interaction between rGO and CTFs were thoroughly studied. The modification of rGO endowed the photocatalyst with improved visible-light absorption, stronger reductive ability, and faster separation rate of photoinduced carriers. Moreover, the covalent C–O–C bond formed in the two components facilitates the directional transfer of photoinduced electrons. A low-cost and robust photocatalyst for clean energy production is constructed in this work, providing inspirations for the design and fabrication of metal-free photocatalytic materials with superior performance.

机译：光催化氢气生产通过水分裂已成为一个环保和绿色技术来有效地利用太阳能。开发可见光活性催化剂,特别是非金属的,是至关重要的访问这个技术考虑他们的经济和环境效益。采用还原法制造高度活跃的不含金属的光催化剂修改共价triazine-based框架(ctf)降低石墨烯氧化物(rGO)。优化周大福复合2 wt % rGO展出4.3倍的活动增强相比原始周大福,显示一个典型的H2进化效率894μ摩尔克−1 h−1。光催化系统和rGO互动rGO,周大福彻底研究。光催化剂与提高可见光吸收,还原能力更强,更快的分离率的光诱导的运营商。此外,共价C-O-C债券形成的两个组件促进定向光诱导电子转移。和健壮的光催化剂对清洁能源生产是建立在这个工作,提供灵感的设计和制造不含金属的光催化材料优越的性能。

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来源
《Catalysis science & technology》 |2021年第5期|1874-1880|共7页
作者
Tan Zunkun; Zhang Peng; Chen QiaoshanFang ShengqiongHuang GuochengBi JinhongWu Ling;
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作者单位

Fuzhou University;

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原文格式 PDF
正文语种英语
中图分类汉语教学;
关键词
hydrogen production; Green technology; Visible Lightphotocatalytic materialsTWO-COMPONENTfabricationPhotocatalystsSolar EnergyCovalent InteractionFrameworksPower production;

机译：制氢;绿色技术;可见;

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机译：promoting Effect of Electrostatic Interaction between a Cobalt Catalyst and a Xanthene Dye on Visible-Light-Driven Electron Transfer and Hydrogen production

Visible-light-driven photocatalyst based upon metal-free covalent triazine-based frameworks for enhanced hydrogen production

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