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首页> 外文期刊>Advanced Sustainable Systems >In Situ Hydrothermal Synthesis of ZnS/TiO2 Nanofibers S‐Scheme Heterojunction for Enhanced Photocatalytic H2 Evolution
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In Situ Hydrothermal Synthesis of ZnS/TiO2 Nanofibers S‐Scheme Heterojunction for Enhanced Photocatalytic H2 Evolution

机译：原位水热合成ZnS/TiO2纳米纤维S型异质结增强光催化析出H2

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Abstract Photocatalysts with step‐scheme (S‐scheme) heterojunctions exhibit huge potential in hydrogen evolution via photocatalytic water splitting, which is regarded as a promising technology to solve the energy crisis and environmental issues. In this work, S‐scheme heterojunction photocatalysts are constructed by in situ depositing ZnS nanoparticles on TiO2 nanofibers via hydrothermal method. A highly improved photocatalytic H2 evolution rate is achieved for the ZnS/TiO2 heterojunction as compared to the mono‐component ZnS and TiO2. Remarkably, the TiO2/ZnS‐5 (TZ‐5) sample possesses the highest H2 evolution rate of 5503.8 µmol g‐1 h‐1, which is 4.8 times of ZnS and 38.8 times of TiO2, respectively. The observed photocatalytic performance improvement is mainly attributed to the construction of an S‐scheme heterojunction, which results in the fast separation of the photogenerated e−–h+ pairs and enhanced redox capacity of the system. This work may provide inspirations and designing references for developing high‐performance S‐scheme heterojunction photocatalysts.
机译：文摘催化剂一步检测方案(计划)应承担的垂直表现出巨大的潜力通过光催化水氢进化分裂,这被认为是一种很有前途的技术来解决能源危机环境问题。异质结论文构造原位沉积二氧化钛的硫化锌纳米粒子通过水热纳米纤维的方法。提高光催化H2进化率实现了硫化锌/二氧化钛异质结相比单一组件的硫化锌和二氧化钛。值得注意的是,二氧化钛/硫化锌5 (TZ量5)示例拥有最高的H2进化的速度5503.8µg摩尔量1 h量1,硫化锌的4.8倍分别和二氧化钛的38.8倍。观察到光催化性能改进主要归因于的建设年代检测方案异质结,它的结果快速分离photogenerated e−- h +对和增强系统的氧化还原能力。工作可以提供灵感和设计参考开发高的性能年代计划异质结催化剂。

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