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Zeng D, Chen Y, Peng J, et al. Synthesis and photocatalytic properties of multi-morphological AuCu3-ZnO hybrid nanocrystals. Nanotechnology. 2015;26(41):415602doi: 10.1088/0957-4484/26/41/415602.
Zeng, D., Chen, Y., Peng, J., Xie, Q., & Peng, D. L. (2015). Synthesis and photocatalytic properties of multi-morphological AuCu3-ZnO hybrid nanocrystals. Nanotechnology, 26(41), 415602. https://doi.org/10.1088/0957-4484/26/41/415602
Zeng, Deqian, et al. "Synthesis and photocatalytic properties of multi-morphological AuCu3-ZnO hybrid nanocrystals." Nanotechnology vol. 26,41 (2015): 415602. doi: https://doi.org/10.1088/0957-4484/26/41/415602
Zeng D, Chen Y, Peng J, Xie Q, Peng DL. Synthesis and photocatalytic properties of multi-morphological AuCu3-ZnO hybrid nanocrystals. Nanotechnology. 2015 Oct 16;26(41):415602. doi: 10.1088/0957-4484/26/41/415602. Epub 2015 Sep 22. PMID: 26390896.
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Nanotechnology. 2015 Oct 16;26(41):415602. doi: 10.1088/0957-4484/26/41/415602. Epub 2015 Sep 22.

Synthesis and photocatalytic properties of multi-morphological AuCu3-ZnO hybrid nanocrystals.

Nanotechnology

Deqian Zeng, Yuanzhi Chen, Jian Peng, Qingshui Xie, Dong-Liang Peng

Affiliations

  1. Department of Materials Science and Engineering, Collaborative Innovation Center of Chemistry for Energy Materials, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China.

PMID: 26390896 DOI: 10.1088/0957-4484/26/41/415602

Abstract

Noble metal-semiconductor hybrid nanocrystals represent an important class of materials for many potential applications, especially for photocatalysis. The utilization of transition metals to form alloys with noble metals can not only reduce the preparation costs, but may also offer tunable optical and catalytic properties for a broader range of applications. In this study, we report on the solution synthesis of AuCu3-ZnO hybrid nanocrystals with three interesting morphologies, including urchin-like, flower-like and multipod-like nanocrystals. In the synthetic strategy, Au-Cu bimetallic alloy seeds formed in situ are used to induce the heteroepitaxial growth of ZnO nanocrystals on the surface of bimetallic alloy cores; thus different types of morphologies can be achieved by controlling the reaction conditions. Through high-resolution transmission electron microscopy observations, well-defined interfaces between ZnO and AuCu3 are observed, which indicate that ZnO has a (0001) orientation and prefers to grow on AuCu3 {111} facets. The as-prepared hybrid nanocrystals demonstrate morphology- and composition-dependent surface plasmon resonance (SPR) absorption bands. In addition, much higher photocatalytic efficiency than pure ZnO nanocrystals is observed for the hybrid nanocrystals in the degradation of methylene blue. In particular, the multipod-like AuCu3-ZnO hybrid nanocrystals show the highest catalytic performance, as well as more than three times higher photocurrent density than the pure ZnO sample. The reported synthetic strategy provides a facile route to the effective combination of a plasmonic alloy with semiconductor components at the nanoscale in a controlled manner.

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