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Plasmonic Cocatalyst with Electric and Thermal Stimuli Boots Solar Hydrogen Evolution
Solar RRL ( IF 6.0 ) Pub Date : 2020-03-25 , DOI: 10.1002/solr.202000094 Lou Pan 1 , Youcheng Zhu 1 , Ziyue Wang 1 , Xiaoyong Xu 1 , Huichao He 2 , Wei Du 3 , Jingguo Hu 1 , Yong Zhou 3
Solar RRL ( IF 6.0 ) Pub Date : 2020-03-25 , DOI: 10.1002/solr.202000094 Lou Pan 1 , Youcheng Zhu 1 , Ziyue Wang 1 , Xiaoyong Xu 1 , Huichao He 2 , Wei Du 3 , Jingguo Hu 1 , Yong Zhou 3
Affiliation
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Exploring low‐cost and high‐activity cocatalysts cooperated with semiconductors is a prerequisite to advance cost‐efficient photocatalytic water splitting. Herein, nickel nanoparticles (NNPs) loaded on graphitic carbon nitride (CN) as unique non‐noble metal cocatalysts with electric and thermal excitation upon surface plasmon for photocatalytic hydrogen (H2) evolution reaction (HER) are designed. The plasmonic NNPs not only endow highly active sites, steering hot electron extraction from excited CN toward HER against charge recombination, but also act as full‐spectrum light‐harvesting antennas enabling plasmon heating for kinetic acceleration. As a result, the optimized CN/NNP hybrid exhibits a significant increase in the H2‐evolution rate up to 13.23 mmol g−1 h−1 with temperature up to 73 °C within 2 h, which far surpasses bare CN and even outperforms CN/Pt hybrid. This work describes the capacity of plasmonic cocatalysts to convert the supplementary photon flux into numerous stimuli, which provides new inspirations for designing photocatalytic systems for solar energy conversion.
中文翻译：
带有电和热刺激的等离子助催化剂可以促进太阳能氢气的释放
探索低成本和高活性的助催化剂与半导体的结合是推进具有成本效益的光催化水分解的先决条件。本文设计了负载在石墨氮化碳（CN）上的镍纳米颗粒（NNP）作为独特的非贵金属助催化剂，并在表面等离子体激元上进行电和热激发以进行光催化氢（H 2）释放反应（HER）。等离子体NNP不仅具有高活性位点，引导从激发的CN向HER的热电子提取阻止电荷重组，而且还充当全光谱光收集天线，使等离子体激元能够加热以加速运动。结果，经过优化的CN / NNP杂化物显示出高达13.23 mmol g -1的H 2演化速率显着增加 h -1的温度在2 h内达到73°C，远远超过了裸露的CN，甚至胜过CN / Pt杂化。这项工作描述了等离激元助催化剂将补充光子通量转化为多种刺激的能力，这为设计用于太阳能转化的光催化系统提供了新的启示。
更新日期：2020-03-25
中文翻译：
带有电和热刺激的等离子助催化剂可以促进太阳能氢气的释放
探索低成本和高活性的助催化剂与半导体的结合是推进具有成本效益的光催化水分解的先决条件。本文设计了负载在石墨氮化碳（CN）上的镍纳米颗粒（NNP）作为独特的非贵金属助催化剂，并在表面等离子体激元上进行电和热激发以进行光催化氢（H 2）释放反应（HER）。等离子体NNP不仅具有高活性位点，引导从激发的CN向HER的热电子提取阻止电荷重组，而且还充当全光谱光收集天线，使等离子体激元能够加热以加速运动。结果，经过优化的CN / NNP杂化物显示出高达13.23 mmol g -1的H 2演化速率显着增加 h -1的温度在2 h内达到73°C，远远超过了裸露的CN，甚至胜过CN / Pt杂化。这项工作描述了等离激元助催化剂将补充光子通量转化为多种刺激的能力，这为设计用于太阳能转化的光催化系统提供了新的启示。
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