Photoelectrochemical oxygen atom transfer enabling efficient selective oxygenation

• 作者: Yujie Xiong
• 来源期刊: 中国科学：化学（英文版）
• 年，卷（期）: 2022,（1）
• 所属期刊栏目: HIGHLIGHTS
• 页码范围: 5-6
• 页数: 2页
• 语种: 英文

摘要

Photoelectrochemical (PEC) technique represents a promis-ing approach to chemical transformation by harvesting sus-tainable solar energy.Despite the wide applications of PEC systems such as environmental remediation and solar energy conversion,the reported PEC reactions are dominated by the radical-based processes that are initiated by the single elec-tron transfer between photo-induced carriers and adsorbed species on photoelectrode surface [1,2].For instance,hy-droxyl radicals are often involved in the PEC oxidation re-actions.As well known,it is a grand challenge to control the formation and evolution rates of radicals,which inevitably leads to the unsatisfactory product selectivity of PEC reac-tions.Naturally,such a circumstance brings about a question to the research community whether a different mechanism can be established to sustain efficient and selective oxyge-nation.Recently,based on their previous findings on PEC water oxidation [3,4],Zhao and coworkers [5] reported that many substrates can be oxidized in an oxygen atom transfer(OAT) pathway,a non-radical two electron process,to oxy-genated products by α-Fe2O3 photoanodes.