当前位置: X-MOL 学术Energy Technol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Insights into Improving Photoelectrochemical Water-Splitting Performance Using Hematite Anode
Energy Technology ( IF 3.6 ) Pub Date : 2021-08-21 , DOI: 10.1002/ente.202100457
Hemam Rachna Devi 1, 2 , Boon Chong Ong 2 , Xin Zhao 2 , Zhilli Dong 2 , Karuna Kar Nanda 1 , Zhong Chen 2
Affiliation  

Designing an efficient photoanode is of great importance for photoassisted solar water splitting. Herein, a series of modifications to a nanorod structure hematite, to be used as anode for photoelectrochemical (PEC) water-splitting reactions is designed. Ti doping, oxygen vacancy formation by N2 treatment, TiO2 passivation, and FeOOH cocatalyst decoration are explored for their roles and contributions to the improvement of the PEC water oxidation performance. It is found that Ti doping and N2 treatment can greatly increase the charge carrier density, which has boosted the photocurrent. TiO2 passivation enhances the photovoltage, resulting in a cathodic shift in the onset potential (≈170 mV with respect to prepassivation). Further, the FeOOH cocatalyst decoration improves the reaction kinetics, thereby improving the overall photoassisted water oxidation performance.

中文翻译:

使用赤铁矿阳极提高光电化学分水性能的见解

设计高效的光电阳极对于光辅助太阳能水分解非常重要。在此,设计了一系列对纳米棒结构赤铁矿的改进,用作光电化学(PEC)水分解反应的阳极。探讨了 Ti 掺杂、N 2处理形成的氧空位、TiO 2钝化和 FeOOH 助催化剂装饰对改善 PEC 水氧化性能的作用和贡献。发现Ti掺杂和N 2处理可以大大提高电荷载流子密度,从而提高了光电流。二氧化钛2钝化增强了光电压,导致起始电位的阴极偏移(相对于预钝化≈170 mV)。此外,FeOOH助催化剂修饰改善了反应动力学,从而提高了整体光辅助水氧化性能。
更新日期:2021-08-21
down
wechat
bug