Divalent Cation Doping into SrTiO₃ for Enhancing the Photocatalytic Performance of Water Splitting

Kazutaka Nishiguchi; Tomoaki Takayama; Shogo Takasuka; Yosuke Harashima; Mikiya Fujii; Seiichiro L. Ten-no

doi:10.1021/acs.jpclett.5c00070

journal article·2025-03-20

Divalent Cation Doping into SrTiO₃ for Enhancing the Photocatalytic Performance of Water Splitting

Kazutaka Nishiguchi, Tomoaki Takayama, Shogo Takasuka, Yosuke Harashima, Mikiya Fujii, Seiichiro L. Ten-no

The Journal of Physical Chemistry Letters· Volume 16· Issue 11

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Source abstract

Abstract

Perovskite SrTiO 3 (STO) is a widely used semiconductor photocatalyst whose photocatalytic activity is significantly influenced by cation doping. In this work, we explore effective divalent dopants to improve the photocatalytic performance of water splitting through both theoretical and experimental approaches. First-principles calculations suggest that divalent Mg 2+ and Zn 2+ are promising dopants replacing Ti 4+ sites of STO to help mitigate charge recombination processes associated with defect levels caused by oxygen vacancies. Experimental analysis of synthesized STO confirms the photocatalytic performance, consistent with the theoretical predictions.

Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Electronic and Structural Properties of Oxides · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Graduate School of System Informatics, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan

Graduate School of Science and Technology, Division of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama-cho, Ikoma, Nara 630-0192, Japan

Data Science Center

Nara Institute of Science and Technology

Center for Material Research Platform

Funding

RIKEN · Japan Society for the Promotion of Science

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