rGO decorated BiVO4/Cu2O n-n heterojunction photoanode for photoelectrochemical water splitting

被引：50

作者：

Bai, Shouli ^{[1
]}

Han, Jingyi ^{[1
]}

Zhao, Yingying ^{[1
]}

Chu, Haomiao ^{[1
]}

Wei, Shiqiang ^{[2
,3
]}

Sun, Jianhua ^{[2
]}

Sun, Lixia ^{[2
]}

Luo, Ruixian ^{[1
]}

Li, Dianqing ^{[1
]}

Chen, Aifan ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Beijing Key Lab Environm Harmful Chem Anal, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China

[3] Chinalco Guangxi Guosheng Rare Earth Dev Co Ltd, Chongzuo 532200, Peoples R China

来源：

RENEWABLE ENERGY | 2020年 / 148卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Photoelectrochemical water splitting; Bismuth vanadate; Cuprous oxide; n-n heterojunctions; Graphene; EFFICIENT; COMPOSITE; OXIDATION; RECOMBINATION; PHOTOCATHODES; COCATALYSTS; FABRICATION; STABILITY; FILMS; MO;

D O I：

10.1016/j.renene.2019.10.044

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The BiVO4 was firstly prepared by modification's metal organic decomposition method followed by electrodepositing rGO and Cu2O on BiVO4 to construct the rGO decorated BiVO4/Cu2O n-n heterojunction triadic photoanode for photoelectrochemical (PEC) water splitting. The structure and PEC properties of the photoanode were characterized and measured by various spectral analysis and three electrode system. The highest photocurrent density of the triadic photoanode achieves 2.2 mA/cm(2) at 1.8 V (vs. RHE) that is closely 2 folds of single BiVO4 photoanode. The photoanode has the highest IPCE value of 42.0% at 400 nm. The enhanced PEC properties come from the valid separation of the photogenerated electron-hole pair and enhancement of surface oxidation kinetics due to the formation of n-n heterojunction and rGO act as the role of electronic migration mediator accelerates charge carrier transfer, which has been demonstrated by calculated the decrease of charge transfer resistance at electrode/electrolyte interface and prolonging of charge carriers lifetimes. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：380 / 387

页数：8

共 46 条

[1] Nature and Light Dependence of Bulk Recombination in Co-Pi-Catalyzed BiVO4 Photoanodes [J].

Abdi, Fatwa F. ;

van de Krol, Roel .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (17) :9398-9404

[2] Recent progress on photocatalytic and photoelectrochemical water splitting under visible light irradiation [J].

Abe, Ryu .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2010, 11 (04) :179-209

[3] Two-step electrodeposition to fabricate the p-n heterojunction of a Cu2O/BiVO4 photoanode for the enhancement of photoelectrochemical water splitting [J].

Bai, Shouli ;

Liu, Jingchao ;

Cui, Meng ;

Luo, Ruixian ;

He, Jing ;

Chen, Aifan .

DALTON TRANSACTIONS, 2018, 47 (19) :6763-6771

[4] Incorporation of Mo and W into nanostructured BiVO4 films for efficient photoelectrochemical water oxidation [J].

Berglund, Sean P. ;

Rettie, Alexander J. E. ;

Hoang, Son ;

Mullins, C. Buddie .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (19) :7065-7075

[5] High-Efficiency Ferroelectric-Film Solar Cells with an n-type Cu2O Cathode Buffer Layer [J].

Cao, Dawei ;

Wang, Chunyan ;

Zheng, Fengang ;

Dong, Wen ;

Fang, Liang ;

Shen, Mingrong .

NANO LETTERS, 2012, 12 (06) :2803-2809

[6] Efficient photocatalytic activity of water oxidation over WO3/BiVO4 composite under visible light irradiation [J].

Chatchai, Ponchio ;

Murakami, Yoshinori ;

Kishioka, Shin-ya ;

Nosaka, Atsuko Y. ;

Nosaka, Yoshio .

ELECTROCHIMICA ACTA, 2009, 54 (03) :1147-1152

[7] Enhancing light harvesting and charge separation of Cu2O photocathodes with spatially separated noble-metal cocatalysts towards highly efficient water splitting [J].

Chen, Dong ;

Liu, Zhifeng ;

Guo, Zhengang ;

Yan, Weiguo ;

Xin, Ying .

JOURNAL OF MATERIALS CHEMISTRY A, 2018, 6 (41) :20393-20401

[8] Investigation of n-type Cu2O layers prepared by a low cost chemical method for use in photovoltaic thin film solar cells [J].

Fernando, CAN ;

de Silva, PHC ;

Wethasinha, SK ;

Dharmadasa, IM ;

Delsol, T ;

Simmonds, MC .

RENEWABLE ENERGY, 2002, 26 (04) :521-529

[9] Photoluminescence characterization of polycrystalline n-type Cu2O films [J].

Garuthara, Rohana ;

Siripala, Withana .

JOURNAL OF LUMINESCENCE, 2006, 121 (01) :173-178

[10] Photoelectrochemical cells [J].

Grätzel, M .

NATURE, 2001, 414 (6861) :338-344

← 1 2 3 4 5 →