Insights into Improving Photoelectrochemical Water-Splitting Performance Using Hematite Anode,Energy Technology

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

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11