Investigation of Al doped Rh@Cr2O3/SrTiO3 photocatalysts in overall seawater splitting with the synergetic electron mediators

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-01-16 DOI:10.1016/j.jtice.2025.105971

Dinh-Tu Luu-Dang , Ngan My Tran , Han Ngoc-Doan Huynh , Tuan-Anh Nguyen , Dinh Quan Nguyen , Wen-Yueh Yu , Marjeta Maček Kržmanc , Van-Han Dang , Jeffery Chi-Sheng Wu

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引用次数: 0

Abstract

Background

The solar-driven photocatalytic seawater splitting process for simultaneous hydrogen and oxygen gas has garnered significant attention as a promising technique for generating eco-friendly chemical fuels. This approach is particularly attractive because of its low cost, and the ability to utilize abundant sunlight and seawater resources.

Methods

The Rh@Cr₂O₃/SrTiO₃:Al (RCSTOA) heterojunction photocatalyst, synthesized via flux technique and photodeposition treatment, possessed distinctive physicochemical properties and exhibited high photocatalytic seawater-splitting performance.

Significant findings

The findings emphasized that the thin layers of Rh@Cr₂O₃ structure (5–20 nm) firmly intimate with a SrTiO₃:Al (STOA) photocatalyst significantly enhanced the seawater-splitting process without requiring any sacrificial agents. Hydrogen and oxygen evolution rates (HER and OER) in natural seawater splitting increased significantly, achieving 263 and 130 µmol.g⁻¹.h⁻¹, respectively maintaining photostability after five consecutive cycles under simulated sunlight illumination. Notably, under the synergy of I⁻-anion solution, the HER improved to 332 µmol.g⁻¹.h⁻¹ without any OER, highlighting potential for H₂/O₂ separation. These findings are expected to advance seawater splitting technology and contribute to potential H₂/O₂ separation techniques in this field.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.