Accessing strain engineered V-Fe(O)OH from Prussian blue analogue precatalyst for efficient anodic oxidation reactions
學年 114
學期 1
出版（發表）日期 2025-10-06
作品名稱 Accessing strain engineered V-Fe(O)OH from Prussian blue analogue precatalyst for efficient anodic oxidation reactions
作品名稱（其他語言）
著者 Baghendra Singh; Shalini Verma; Pandian Mannu; Trinh Hai Binh; Chung-Li Dong; Apparao Draksharapu
單位
出版者
著錄名稱、卷期、頁數 Angewandte Chemie International Edition 64(41), e202512246
摘要 Prussian blue analogues (PBAs) are promising precatalysts to access active metal oxyhydroxide [M(O)OH] phases for anodic oxidation reactions (AORs). In this study, we have introduced a d-d electron complementation strategy to fine-tune the electronic features of a VOFe-PBA precatalyst. Spectroscopic studies revealed the altered coordination and electronic features of the VOFe-PBA precatalyst compared to the FeFe-PBA counterpart. The electrochemical activation of the VOFe-PBA precatalyst led to the formation of a strained V-Fe(O)OH active catalyst. Notably, V-Fe(O)OH demonstrated exceptional performance, requiring a potential of only 1.56 V versus RHE for oxygen evolution reaction (OER) and 1.42 V versus RHE for iodide oxidation reaction (IOR) at a current density of 100 mA cm−2, significantly outperforming the Fe(O)OH. When employed in IOR-assisted water splitting, V-Fe(O)OH achieved an energy efficiency of 60% compared to overall water splitting. In-situ Raman studies reflected the potential dependent generation of active reaction intermediates, which participated in IOR to produce iodate. Mechanistic investigations suggested the involvement of a lattice oxygen mechanism (LOM) facilitated by a proton-decoupled electron transfer (PDET) pathway.
關鍵字 Anodic oxidation reaction; d-d electron complementation; Metal-(oxy)hydroxide; Prussian Blue analogue precatalyst; Strain engineering
語言 en
ISSN 1433-7851; 1521-3773
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版,紙本