分解水
氧化锡
材料科学
化学工程
介孔材料
纳米技术
制氢
光电化学电池
光催化
电解质
氧化物
赤铁矿
电极
催化作用
化学
冶金
生物化学
物理化学
工程类
作者
Karen C. Bedin,Beatriz Mouriño,Ingrid Rodríguez‐Gutiérrez,João Batista Souza,Gabriel Trindade dos Santos,Jefferson Bettini,Carlos Alberto Rodrigues Costa,Lionel Vayssières,Flávio L. Souza
出处
期刊:Chinese Journal of Catalysis
[China Science Publishing & Media Ltd.]
日期:2022-05-01
卷期号:43 (5): 1247-1257
被引量:13
标识
DOI:10.1016/s1872-2067(21)63973-6
摘要
This work describes a simple yet powerful scalable solution chemistry strategy to create back-contact rich interfaces between substrates such as commercial transparent conducting fluorine-doped tin oxide coated glass (FTO) and photoactive thin films such as hematite for low-cost water oxidation reaction. High-resolution electron microscopy (SEM, TEM, STEM), atomic force microscopy (AFM), elemental chemical mapping (EELS, EDS) and photoelectrochemical (PEC) investigations reveal that the mechanical stress, lattice mismatch, electron energy barrier, and voids between FTO and hematite at the back-contact interface as well as short-circuit and detrimental reaction between FTO and the electrolyte can be alleviated by engineering the chemical composition of the precursor solutions, thus increasing the overall efficiency of these low-cost photoanodes for water oxidation reaction for a clean and sustainable generation of hydrogen from PEC water-splitting. These findings are of significant importance to improve the charge collection efficiency by minimizing electron-hole recombination observed at back-contact interfaces and grain boundaries in mesoporous electrodes, thus improving the overall efficiency and scalability of low-cost PEC water splitting devices.
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