How titanium and iron are integrated into hematite to enhance the photoelectrochemical water oxidation: a review

Hematite has been considered as a promising photoanode candidate for photoelectrochemical (PEC) water oxidation and has attracted numerous interests in the past decades. However, intrinsic drawbacks drastically lower its photocatalytic activity. Ti-based modifications including Ti-doping, Fe 2 O 3 /...

Full description

Saved in:
Bibliographic Details
Published in:Physical chemistry chemical physics : PCCP 2023-01, Vol.25 (3), p.146-142
Main Authors: Lv, Xiaoxin, Zhang, Gaoteng, Wang, Menglian, Li, Guoqing, Deng, Jiujun, Zhong, Jun
Format: Article
Language:English
Subjects:
Catalytic activity
Hematite
Heterostructures
Iron
Oxidation
Photocatalysis
Titanium
Titanium dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hematite has been considered as a promising photoanode candidate for photoelectrochemical (PEC) water oxidation and has attracted numerous interests in the past decades. However, intrinsic drawbacks drastically lower its photocatalytic activity. Ti-based modifications including Ti-doping, Fe 2 O 3 /Fe 2 TiO 5 heterostructures, TiO 2 passivation layers, and Ti-containing underlayers have shown great potential in enhancing the PEC conversion efficiency of hematite. Moreover, the combination of Ti-based modifications with various strategies towards more efficient hematite photoanodes has been widely investigated. Nevertheless, a corresponding comprehensive overview, especially with the most recent working mechanisms, is still lacking, limiting further improvement. In this respect, by summarizing the recent progress in Ti-modified hematite photoanodes, this review aims to demonstrate how the integration of titanium and iron atoms into hematite influences the PEC properties by tuning the carrier behaviours. It will provide more cues for the rational design of high-performance hematite photoanodes towards future practical applications. In this work we summarize the recent progress in Ti-based modifications in hematite photoanodes for solar water oxidation, including Ti-doping, Fe 2 O 3 /Fe 2 TiO 5 heterostructures, TiO 2 passivation layers, and Ti-containing underlayers.
ISSN:1463-9076
1463-9084
DOI:10.1039/d2cp04969d