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Alloyed (ZnS)x(CuInS2)1−x Semiconductor Nanorods: Synthesis, Bandgap Tuning and Photocatalytic Properties

Authors

  • Chen Ye,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 (Singapore), Fax: (+65) 68720785
    2. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
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    • These authors contributed equally to this work.

  • Dr. Michelle D. Regulacio,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 (Singapore), Fax: (+65) 68720785
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    • These authors contributed equally to this work.

  • Dr. Suo Hon Lim,

    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 (Singapore), Fax: (+65) 68720785
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  • Prof. Qing-Hua Xu,

    Corresponding author
    1. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
    • Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 (Singapore)
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  • Prof. Ming-Yong Han

    Corresponding author
    1. Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 (Singapore), Fax: (+65) 68720785
    2. Department of Bioengineering, National University of Singapore, 9 Engineering Drive 1, 117576 (Singapore)
    • Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 (Singapore), Fax: (+65) 68720785
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Abstract

Rod-like nanocrystals of the semiconductor alloy (ZnS)x(CuInS2)1−x (ZCIS) have been colloidally prepared by using a one-pot non-injection-based synthetic strategy. The ZCIS nanorods crystallize in the hexagonal wurtzite structure and display preferential growth in the direction of the c axis. The bandgap of these quarternary alloyed nanorods can be conveniently tuned by varying the ratio of ZnS to CuInS2. A non-linear relationship between the bandgap and the alloy composition is observed. The ZCIS nanorods are found to exhibit promising photocatalytic behaviour in visible-light-driven degradation of Rhodamine B.

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