首页|(162930)Water-soluble peroxotitanium complex: A novel strategy to prepare Fe_2O_3/Fe_2TiO_5 photoanode with enhanced water oxidation
(162930)Water-soluble peroxotitanium complex: A novel strategy to prepare Fe_2O_3/Fe_2TiO_5 photoanode with enhanced water oxidation
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NSTL
Elsevier
The construction of Fe_2O_3/Fe_2TiO_5 heterostructure has been proven as an effective strategy to improve the photoconversion efficiency of hematite, however its controllable synthesis is still a great challenge. In this study, by performing a comparative investigation on two distinct Ti precursors, a novel, convenient, and low-cost approach for fabricating efficient Fe_2O_3/Fe_2TiO_5 photoanodes is developed. It clearly demonstrates that the adoption of typical TiCl_4 precursor leads to a Fe_2O_3/TiO_2 composite with a lower PEC activity, while a core-shell Fe_2O_3/Fe_2TiO_5 heterostructure is built via using the stable and water-soluble peroxo-titanium complex (PTC) precursor. The as-fabricated photoanode exhibits a comparable photocurrent density of 2.51 mA/cm~2 at 1.23 V vs. RHE to most of Fe_2O_3/Fe_2TiO_5 photoanodes in literatures. Based on various characterizations, the significant enhancement in PEC performance can be attributed to the largely increased donor density and the formation of Fe_2O_3/Fe_2TiO_5 core-shell heterostructure, which effectively facilitate the charge separation and transport in the bulk and surface of photoanode. This work provides a new idea for fabricating high-efficient Fe_2O_3/Fe_2TiO_5 photoanodes.
Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China
Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
NSTL
Elsevier
