Citation: Yige Deng, Song Shu, Ningjie Fang, Ruobing Wang, Yinghao Chu, Zhaobing Liu, Wanglai Cen. One-pot synthesis of SrTiO₃-SrCO₃ heterojunction with strong interfacial electronic interaction as a novel photocatalyst for water splitting to generate H₂[J]. Chinese Chemical Letters, ;2023, 34(2): 107323. doi: 10.1016/j.cclet.2022.03.046 shu

One-pot synthesis of SrTiO₃-SrCO₃ heterojunction with strong interfacial electronic interaction as a novel photocatalyst for water splitting to generate H₂

Yige Deng ^a ,
Song Shu ^a ,
Ningjie Fang ^a ,
Ruobing Wang ^a ,
Yinghao Chu ^{a, *,} ,
Zhaobing Liu ^{a, b} ,
Wanglai Cen ^c

a.
College of Architecture and Environment, Sichuan University, Chengdu 610065, China
b.
Chengdu Environment Group, Chengdu 610065, China
c.
Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China

chuyinghao@scu.edu.cn

Received Date: 24 December 2021
Revised Date: 30 January 2022
Accepted Date: 9 March 2022
Available Online: 13 March 2022

Figures(4)

Photocatalytic hydrogen evolution from water splitting is a promising strategy for realizing the vision of carbon neutrality. Herein, a novel SrTiO₃-SrCO₃ n-n heterojunction was used for the first time for water splitting to generate H₂. The heterojunction was synthesized by a soft chemical one-pot hydrothermal method. The SrTiO₃-SrCO₃ loading with 3 wt% Pt shows the maximum photocatalytic H₂ evolution rate of 3.62 mmol h⁻¹g⁻¹ under simulated sunlight irradiation, which is 20.1 times higher than that of pristine SrTiO₃. The apparent quantum efficiency of SrTiO₃-SrCO₃ reaches 21.73% at 313 nm, and it shows good stability during cyclic experiment. The formation of compact SrTiO₃-SrCO₃ heterojunction with strong interfacial electronic interaction promotes the transmission and separation of photo-generated carriers. The results of XPS, PL, PC, EIS and DFT support the mechanism of improving photocatalytic activity based on carrier dynamics. This work provides a facile and effective method to enhance the activity of SrTiO₃-based heterojunction photocatalysts.
- SrTiO₃/SrCO₃,
- Heterojunction,
- Photocatalytic,
- Hydrogen evolution,
- Nanomaterial
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One-pot synthesis of SrTiO3-SrCO3 heterojunction with strong interfacial electronic interaction as a novel photocatalyst for water splitting to generate H2

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通讯作者: 陈斌, bchen63@163.com

One-pot synthesis of SrTiO₃-SrCO₃ heterojunction with strong interfacial electronic interaction as a novel photocatalyst for water splitting to generate H₂