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Issue 12, 2011
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Facile synthesis of Zn-rich (GaN)1−x(ZnO)x solid solutions using layered double hydroxides as precursors

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Abstract

(GaN)1−x(ZnO)x solid solutions are potential photocatalysts for water splitting and environmental decontamination under visible light. Solid solutions prepared by the traditional method are not effective because of their low Zn content (x < 0.5). Here, we show that Zn-rich solid solutions (∼0.5 < x < ∼0.8) are readily prepared by the nitridation of layered double hydroxides (LDHs) containing Zn2+ and Ga3+ ions, and that the Zn content is easily adjusted by changing the Zn/Ga ratio of the LDH precursors. The band gap of (GaN)1−x(ZnO)x decreases gradually from 2.60 eV at x = 0.46 to 2.37 eV at x = 0.81. The Zn-rich solid solutions absorb strongly above 500 nm, and these solutions loaded with 1 wt% Pt are found to be efficient for photoreducing Cr6+ ions under visible light.

Graphical abstract: Facile synthesis of Zn-rich (GaN)1−x(ZnO)x solid solutions using layered double hydroxides as precursors

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Publication details

The article was received on 08 Dec 2010, accepted on 17 Jan 2011 and first published on 10 Feb 2011


Article type: Paper
DOI: 10.1039/C0JM04277C
Citation: J. Mater. Chem., 2011,21, 4562-4567
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    Facile synthesis of Zn-rich (GaN)1−x(ZnO)x solid solutions using layered double hydroxides as precursors

    J. Wang, B. Huang, Z. Wang, P. Wang, H. Cheng, Z. Zheng, X. Qin, X. Zhang, Y. Dai and M. Whangbo, J. Mater. Chem., 2011, 21, 4562
    DOI: 10.1039/C0JM04277C

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