Promoting photocatalytic hydrogen evolution over the perovskite oxide Pr0.5(Ba0.5Sr0.5)0.5Co0.8Fe0.2O3 by plasmon-induced hot electron injection

Zhishan Li; Qimeng Zhang; Jian-Gang Li; Huachuan Sun; Muk-Fung Yuen; Shenglin Jiang; Yang Tian; Guo Hong; Chundong Wang; Meilin Liu

doi:10.1039/C9NR10247G

Promoting photocatalytic hydrogen evolution over the perovskite oxide Pr_0.5(Ba_0.5Sr_0.5)_0.5Co_0.8Fe_0.2O₃ by plasmon-induced hot electron injection†

Zhishan Li,^a Qimeng Zhang,^b Jian-Gang Li,^a Huachuan Sun,^a Muk-Fung Yuen,^cde Shenglin Jiang,^a Yang Tian,

*^b Guo Hong,

*^cd Chundong Wang

*^af and Meilin Liu

^g

Author affiliations

* Corresponding authors

^a School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P.R. China
E-mail: apcdwang@hust.edu.cn

^b Department of Chemistry, Capital Normal University, Beijing 100048, P.R. China
E-mail: tianyang@cnu.edu.cn

^c Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, P.R. China
E-mail: ghong@um.edu.mo

^d Department of Physics and Chemistry, Faculty of Science and Technology, University of Macau, Macao SAR, P.R. China

^e School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Shenzhen, Guangdong, P.R. China

^f College of Life Science, Tarim University, Alaer 843300, P.R. China

^g School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA

Abstract

Exploration of highly efficient and stable photocatalysts for water splitting has attracted much attention. However, developing a facile and effective approach to enhance the photocatalytic activity for practical applications is still highly challenging. Herein, we report a newly-fabricated perovskite oxide (Pr_0.5(Ba_0.5Sr_0.5)_0.5Co_0.8Fe_0.2O₃) decorated with Au ultrafine nanoparticles for photocatalytic water splitting. An exceptionally high hydrogen evolution rate of 1618 μmol g⁻¹ h⁻¹ was achieved (under 2 h illumination) when the Au mass loading was optimized to 9.3 wt%, which is 540 times higher than that of the pristine one. The splendid photocatalytic activity of the sample was attributed to plasmon-excited hot electron injection from Au to Pr_0.5(Ba_0.5Sr_0.5)_0.5Co_0.8Fe_0.2O₃ (PBSCF) under illumination. The finite-difference time-domain simulations (FDTD) demonstrated that the localized strong electric field formed at the interface between Au and PBSCF under illumination, enables the hot electrons to be energetic and make the injection possible.

This article is part of the themed collection: 2020 Nanoscale HOT Article Collection

Nanoscale

Promoting photocatalytic hydrogen evolution over the perovskite oxide Pr_0.5(Ba_0.5Sr_0.5)_0.5Co_0.8Fe_0.2O₃ by plasmon-induced hot electron injection†

Abstract

Supplementary files

Article information

Download Citation

Permissions

Promoting photocatalytic hydrogen evolution over the perovskite oxide Pr_0.5(Ba_0.5Sr_0.5)_0.5Co_0.8Fe_0.2O₃ by plasmon-induced hot electron injection

Social activity

Search articles by author

Spotlight

Advertisements

Nanoscale