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Photothermocatalytic Hydrogen Evolution over Ni2P/TiO2 for Full-Spectrum Solar Energy Conversion
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-05-31 , DOI: 10.1021/acs.iecr.8b00369 Rui Song 1 , Bing Luo 1 , Jiafeng Geng 1 , Dongxing Song 1 , Dengwei Jing 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-05-31 , DOI: 10.1021/acs.iecr.8b00369 Rui Song 1 , Bing Luo 1 , Jiafeng Geng 1 , Dongxing Song 1 , Dengwei Jing 1
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For photocatalytic solar energy conversion, the critical challenge is to enhance the solar utilization efficiency. Many efforts have focused on the development of broad-band response nanomaterials. Here, we propose an alternative approach wherein, over Ni2P/TiO2 nanoparticles without noble metal, the UV–vis part of solar energy was absorbed and converted by a semiconductor and its infrared part was separately collected and converted into thermal energy to heat the photocatalytic reaction to a certain temperature. The photothermocatalytic hydrogen activity was 3.6 times that of the sum of the photocatalytic and thermocatalytic reactions. The in situ generated oxygen vacancies in Ni2P/TiO2 during the photothermocatalytic reaction were found to be responsible for the enhanced activity. Moreover, the photocurrent transient response results revealed the faster transfer of electrons from TiO2 to Ni2P at higher temperature which is vital for the significantly enhanced photothermocatalytic hydrogen production. The long-term test also shows the stability of the proposed reaction system.
中文翻译：
Ni 2 P / TiO 2上光热催化氢的全光谱太阳能转化
对于光催化太阳能转换，关键挑战是提高太阳能利用效率。许多努力集中在宽带响应纳米材料的开发上。在这里，我们提出了一种替代方法，其中，在不含贵金属的Ni 2 P / TiO 2纳米颗粒上，太阳能的紫外线可见部分被半导体吸收和转化，而其红外部分被分别收集并转化为热能转化为热能。光催化反应到一定温度。光热催化氢活性是光催化和热催化反应总和的3.6倍。Ni 2 P / TiO 2中原位产生的氧空位发现在光热催化反应过程中是增强活性的原因。此外，光电流瞬态响应结果表明，在较高温度下电子从TiO 2更快转移到Ni 2 P，这对于显着提高光热催化氢的产生至关重要。长期测试还显示了所提出反应体系的稳定性。
更新日期：2018-05-31
中文翻译：
Ni 2 P / TiO 2上光热催化氢的全光谱太阳能转化
对于光催化太阳能转换，关键挑战是提高太阳能利用效率。许多努力集中在宽带响应纳米材料的开发上。在这里，我们提出了一种替代方法，其中，在不含贵金属的Ni 2 P / TiO 2纳米颗粒上，太阳能的紫外线可见部分被半导体吸收和转化，而其红外部分被分别收集并转化为热能转化为热能。光催化反应到一定温度。光热催化氢活性是光催化和热催化反应总和的3.6倍。Ni 2 P / TiO 2中原位产生的氧空位发现在光热催化反应过程中是增强活性的原因。此外，光电流瞬态响应结果表明，在较高温度下电子从TiO 2更快转移到Ni 2 P，这对于显着提高光热催化氢的产生至关重要。长期测试还显示了所提出反应体系的稳定性。
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