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Issue 23, 2013
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Silver chlorobromide nanoparticles with highly pure phases: synthesis and characterization

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Abstract

Ternary silver chlorobromide (AgClxBr1−x) nanoparticles with finely tuned compositions have been successfully synthesized through a co-precipitation approach in which silver nitrate reacts with hexadecyltrimethylammonium chloride (CTAC) and hexadecyltrimethylammonium bromide (CTAB) in aqueous solutions at room temperature. The synthesized AgClxBr1−x nanoparticles exhibit highly pure crystalline phases with face-centred cubic symmetries and compositional purity without contamination of optically active silver clusters and silver nanodomains. Such high purity enables the determination of indirect bandgap energies of the AgClxBr1−x nanoparticles for the first time. Tuning the composition from chloride- to bromide-rich leads to a decrease in size and the indirect bandgap of the nanoparticles. In addition, preliminary evaluations indicate that the ternary AgClxBr1−x nanoparticles are better in the photocatalytic decomposition of methylene blue molecules with visible light in comparison with the counterpart binary AgCl and AgBr nanoparticles.

Graphical abstract: Silver chlorobromide nanoparticles with highly pure phases: synthesis and characterization

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Publication details

The article was received on 03 Jan 2013, accepted on 28 Mar 2013 and first published on 05 Apr 2013


Article type: Paper
DOI: 10.1039/C3TA00020F
Citation: J. Mater. Chem. A, 2013,1, 6786-6793
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    Silver chlorobromide nanoparticles with highly pure phases: synthesis and characterization

    Z. Li and Y. Sun, J. Mater. Chem. A, 2013, 1, 6786
    DOI: 10.1039/C3TA00020F

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