A Na-containing Pt cocatalyst for efficient visible-light-induced hydrogen evolution on BaTaO2N

Huihui Li; Daling Lu; Shanshan Chen; Takashi Hisatomi; Junie Jhon M. Vequizo; Jiadong Xiao; Zheng Wang; Lihua Lin; Qi Xiao; Yuliang Sun; Yugo Miseki; Kazuhiro Sayama; Akira Yamakata; Tsuyoshi Takata; Kazunari Domen

doi:10.1039/D1TA01162F

A Na-containing Pt cocatalyst for efficient visible-light-induced hydrogen evolution on BaTaO₂N†

Huihui Li,

^ab Daling Lu,^b Shanshan Chen,

^b Takashi Hisatomi,

^bc Junie Jhon M. Vequizo,

^b Jiadong Xiao,^b Zheng Wang,

^e Lihua Lin,^b Qi Xiao,

^b Yuliang Sun,^f Yugo Miseki,

^g Kazuhiro Sayama,

^g Akira Yamakata,

^h Tsuyoshi Takata^b and Kazunari Domen

*^bd

Author affiliations

* Corresponding authors

^a National & Local Joint Engineering Laboratory for Optical Conversion Materials and Technology, Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China

^b Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano-shi, Nagano 380-8553, Japan
E-mail: domen@shinshu-u.ac.jp

^c PRESTO, JST, 4-17-1 Wakasato, Nagano-shi, Nagano 380-8553, Japan

^d Office of University Professors, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan

^e Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

^f College of Physics, Jilin University, No. 2699, Qianjin Road, Changchun 130012, China

^g Global Zero Emission Research Center, AIST, Central 5, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan

^h Graduate School of Engineering, Toyota Technological Institute, Nagoya, Japan

Abstract

A high degree of cocatalyst dispersion and intimate contact with the photocatalyst are vital for improving the activity of narrow bandgap photocatalytic materials. In this work, the addition of a small number of Na ions to a Pt cocatalyst deposited on a semiconducting BaTaO₂N photocatalyst (with an absorption edge of 650 nm) enhanced photocatalytic H₂ evolution under visible light irradiation. The addition of Na ions to the Pt-loaded BaTaO₂N (Pt/BaTaO₂N) caused more efficient evolution of H₂ than Na-free Pt/BaTaO₂N during Z-scheme overall water splitting. These results should assist in the fabrication of photocatalysts modified with highly dispersed cocatalysts for efficient water splitting.

This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers

Journal of Materials Chemistry A

A Na-containing Pt cocatalyst for efficient visible-light-induced hydrogen evolution on BaTaO₂N†

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A Na-containing Pt cocatalyst for efficient visible-light-induced hydrogen evolution on BaTaO₂N

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Journal of Materials Chemistry A