The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

Tateishi, Ikki; Furukawa, Mai; Katsumata, Hideyuki; Kaneco, Satoshi

doi:10.3390/chemengineering3040079

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The Effect of Cu and Ga Doped ZnIn₂S₄ under Visible Light on the High Generation of H₂ Production

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Global Environment Center for Education & Research, Mie University, Mie 514-8507, Japan

Department of Chemistry for Materials, Graduate School of Engineering, Mie University, Mie 514-8507, Japan

Author to whom correspondence should be addressed.

ChemEngineering 2019, 3(4), 79; https://doi.org/10.3390/chemengineering3040079

Received: 28 June 2019 / Revised: 13 September 2019 / Accepted: 25 September 2019 / Published: 29 September 2019

(This article belongs to the Special Issue Advances in Metal-Based Catalysts)

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Abstract

A Cu⁺ and Ga³⁺ co-doped ZnIn₂S₄ photocatalyst (Zn_(1−2x)(CuGa)_xIn₂S₄) with controlled band gap was prepared via a simple one-step solvothermal method. Zn_(1−2x)(CuGa)_xIn₂S₄ acted as an efficient photocatalyst for H₂ evolution under visible light irradiation (λ > 420 nm; 4500 µW/cm²). The effects of the (Cu and Ga)/Zn molar ratios of Zn_(1−2x)(CuGa)_xIn₂S₄ on the crystal structure (hexagonal structure), morphology (microsphere-like flower), optical property (light harvesting activity and charge hole separation ability), and photocatalytic activity have been investigated in detail. The maximum H₂ evolution rate (1650 µmol·h⁻¹·g⁻¹) was achieved over Zn_0.84(CuGa)_0.13In₂S₄, showing a 3.3 times higher rate than that of untreated ZnIn₂S₄. The bandgap energy of Zn_(1−2x)(CuGa)_xIn₂S₄ decreased from 2.67 to 1.90 eV as the amount of doping Cu⁺ and Ga³⁺ increased. View Full-Text

Keywords: photocatalytic hydrogen generation; copper; gallium; ZnIn₂S₄

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Tateishi, I.; Furukawa, M.; Katsumata, H.; Kaneco, S. The Effect of Cu and Ga Doped ZnIn₂S₄ under Visible Light on the High Generation of H₂ Production. ChemEngineering 2019, 3, 79. https://doi.org/10.3390/chemengineering3040079

AMA Style

Tateishi I, Furukawa M, Katsumata H, Kaneco S. The Effect of Cu and Ga Doped ZnIn₂S₄ under Visible Light on the High Generation of H₂ Production. ChemEngineering. 2019; 3(4):79. https://doi.org/10.3390/chemengineering3040079

Chicago/Turabian Style

Tateishi, Ikki, Mai Furukawa, Hideyuki Katsumata, and Satoshi Kaneco. 2019. "The Effect of Cu and Ga Doped ZnIn₂S₄ under Visible Light on the High Generation of H₂ Production" ChemEngineering 3, no. 4: 79. https://doi.org/10.3390/chemengineering3040079

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The Effect of Cu and Ga Doped ZnIn₂S₄ under Visible Light on the High Generation of H₂ Production

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