Synergistic effect of titanium oxide underlayer and interlayer on zirconium-doped zinc ferrite photoanode for photoelectrochemical water splitting

被引：11

作者：

Anushkkaran, Periyasamy ^{[1
]}

Dhandole, Love Kumar ^{[1
]}

Chae, Weon-Sik ^{[2
]}

Lee, Hyun Hwi ^{[3
]}

Choi, Sun Hee ^{[3
]}

Ryu, Jungho ^{[4
]}

Jang, Jum Suk ^{[1
]}

机构：

[1] Jeonbuk Natl Univ, Coll Environm & Bioresource Sci, Div Biotechnol, Iksan 54596, South Korea

[2] Korea Basic Sci Inst, Daegu Ctr, Daegu 41566, South Korea

[3] Pohang Univ Sci & Technol POSTECH, Pohang Accelerator Lab PAL, Pohang 37673, South Korea

[4] Korea Inst Geosci & Mineral Resources KIGAM, Geol Environm Res Div, Daejeon 34132, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 75期

基金：

新加坡国家研究基金会;

关键词：

TiO2; double-layer; Spin coating; Ti4+ diffusion; Photoelectrochemical cells; ULTRATHIN HEMATITE FILMS; NANOROD PHOTOANODES; HYDROGEN-PRODUCTION; EFFICIENT; NANOWIRE; ZNFE2O4; NANOSTRUCTURES; PERFORMANCE; INTERFACE; TRANSPORT;

D O I：

10.1016/j.ijhydene.2022.07.100

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Here, we report the synergistic effect of dual TiO2 layers to enhance the PEC performance of Zirconium-doped zinc ferrite (ZZFO) photoanode by improving the charge carrier density and suppressing the photogenerated charge recombination. The TiO2 underlayer works asa blocking layer to remarkably suppress the back-injection of electrons from the fluorine -doped tin oxide (FTO) leading to reducing the bulk charge recombination. While interlayer TiO2 improves the bulk charge transfer property of ZZFO photoanodes. The optimal TiO2 double-layer modified ZZFO photoanode exhibits an enhanced photocurrent of 0.435 mA/ cm(2) at 1.23 V vs. reversible hydrogen electrode (RHE), which is 2.5 times higher than that of the ZZFO photoanode. The effect of each layer was deeply investigated by electrochemical impedance spectroscopy (EIS), intensity-modulated photocurrent spectroscopy (IMPS) and time-resolved photoluminescence studies (TRPL) with the aim of gaining a clear picture of the interface modifications and their impact on the efficiency of the ZZFO photoanode.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：32015 / 32030

页数：16

共 65 条

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