TiO2-rutile/anatase homojunction with enhanced charge separation for photoelectrochemical water splitting

被引:41
作者
Huang, Xiaoqian [1 ]
Zhang, Ruikang [1 ]
Gao, Xiaoru [1 ]
Yu, Borong [1 ]
Gao, Yuanzhe [1 ]
Han, Zhan-gang [1 ]
机构
[1] Hebei Normal Univ, Coll Chem & Mat Sci, Hebei Key Lab Organ Funct Mol, Shijiazhuang 050024, Hebei, Peoples R China
基金
中国国家自然科学基金;
关键词
TiO2-rutile; anatase; Homojunction; Heterojunction; Band bending; Photoelectrochemical water splitting; HIGHLY-EFFICIENT; TIO2; PHOTOANODE; HETEROJUNCTION; ANATASE; PHOTOCATALYST; PERFORMANCE; NANOTUBES; TRANSPORT; ARRAYS;
D O I
10.1016/j.ijhydene.2021.05.118
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
The mismatched interfaces of heterojunction usually have lots of defects, deriving in recombination of generated electron-hole pairs. On the other hand, homojunction interfaces are considered to be beneficial to the separation of charge carriers due to the similar characteristics in two sides of homojunction. TiO2 have rutile and anatase two typical photoactive phases in nature. In this work, TiO2-rutile/anatase (TiO2-R/A) homojunction photoanode is fabricated by in situ growth of anatase TiO2 on TiO2-R surface. By contrast with TiO2-rutile/rutile (TiO2-R/R) photoanode, TiO2-R/A displays higher photocurrent density (1.70 mA cm-2 at 0.6 V vs. SCE). Deep insight into the mechanism suggests that TiO2-R/A homojunction has intense band bending and enhanced surface area, which facilitate the charge separation and transmission. This study offers some novel insights to design and fabricate semiconductors photoanodes for highly efficient photocatalytic reactions. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:26358 / 26366
页数:9
相关论文
共 44 条
[21]   Impact of oxygen vacancies on TiO2 charge carrier transfer for photoelectrochemical water splitting [J].
Huang, Xiaoqian ;
Gao, Xiaoru ;
Xue, Qihui ;
Wang, Can ;
Zhang, Ruikang ;
Gao, Yuanzhe ;
Han, Zhangang .
DALTON TRANSACTIONS, 2020, 49 (07) :2184-2189
[22]   Synergistic Design of Anatase-Rutile TiO2Nanostructured Heterophase Junctions toward Efficient Photoelectrochemical Water Oxidation [J].
Lee, Sangwoo ;
Cho, A. Young ;
Rim, You Seung ;
Park, Jun-Young ;
Choi, Taekjib .
COATINGS, 2020, 10 (06)
[23]   An effective strategy of constructing a multi-junction structure by integrating a heterojunction and a homojunction to promote the charge separation and transfer efficiency of WO3 [J].
Li, Yanting ;
Liu, Zhifeng ;
Li, Junwei ;
Ruan, Mengnan ;
Guo, Zhengang .
JOURNAL OF MATERIALS CHEMISTRY A, 2020, 8 (13) :6256-6267
[24]   Hydrogenated TiO2 Nanorod Arrays Decorated with Carbon Quantum Dots toward Efficient Photoelectrochemical Water Splitting [J].
Liang, Zhao ;
Hou, Huilin ;
Fang, Zhi ;
Gao, Fengmei ;
Wang, Lin ;
Chen, Ding ;
Yang, Weiyou .
ACS APPLIED MATERIALS & INTERFACES, 2019, 11 (21) :19167-19175
[25]   Cactus-like hierarchical nanorod-nanosheet mixed dimensional photoanode for efficient and stable water splitting [J].
Liu, Yichong ;
Kang, Zhuo ;
Si, Haonan ;
Li, Peifeng ;
Cao, Shiyao ;
Liu, Shuo ;
Li, Yong ;
Zhang, Suicai ;
Zhang, Zheng ;
Liao, Qingliang ;
Wang, Li ;
Zhang, Yue .
NANO ENERGY, 2017, 35 :189-198
[26]   Enhanced electron transport in rutile TiO2 nanowires via H2S-assisted incorporation of dissolved silicon for solar-driven water splitting [J].
Lu, Yang ;
Wei, Zi ;
Salke, Nilesh P. ;
Yu, Lu ;
Yan, Hao .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 244 :767-772
[27]   Enhancing the solar water splitting activity of TiO2 nanotube-array photoanode by surface coating with La-doped SrTiO3 [J].
Lucas, Thalles T. A. ;
Melo, Mauricio A. ;
Freitas, Andre L. M. ;
Souza, Flavio L. ;
Goncalves, Renato, V .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2020, 208
[28]   Enhanced solar-driven water splitting of 1D core-shell Si/TiO2/ZnO nanopillars [J].
Pavlenko, Mykola ;
Siuzdak, Katarzyna ;
Coy, Emerson ;
Zaleski, Karol ;
Jancelewicz, Mariusz ;
Iatsunskyi, Igor .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2020, 45 (50) :26426-26433
[29]   Facile Synthesis of [101]-Oriented Rutile TiO2 Nanorod Array on FTO Substrate with a Tunable Anatase-Rutile Heterojunction for Efficient Solar Water Splitting [J].
Sutiono, Hogiartha ;
Tripathi, Alok M. ;
Chen, Hung-Ming ;
Chen, Ching-Hsiang ;
Su, Wei-Nien ;
Chen, Liang-Yih ;
Dai, Hongjie ;
Hwang, Bing-Joe .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2016, 4 (11) :5963-5971
[30]   Trapping-Induced Enhancement of Photocatalytic Activity on Brookite TiO2 Powders: Comparison with Anatase and Rutile TiO2 Powders [J].
Vequizo, Junie Jhon M. ;
Matsunaga, Hironori ;
Ishiku, Tatsuya ;
Karnimura, Sunao ;
Ohno, Teruhisa ;
Yamakata, Akira .
ACS CATALYSIS, 2017, 7 (04) :2644-2651