Photocatalytic hybrid Au/ZnO nanoparticles assembled through a one-pot method

Journal of Colloid and Interface Science
Joydeb MannaRaz Jelinek

Abstract

Growth of metal domains on semiconductor nanoparticles is known to enhance their photocatalytic properties. We prepared ZnO nanoparticles decorated with metallic Au domains through a new one-pot microwave-based strategy. The synthetic route utilized microwave-heating of a mixture of only three components: Zn(2+) salt, Au(SCN)4(-) which served as a precursor for metallic gold, and Tris base. The Tris molecules had a dual role in the process, both shaping the morphology of the ZnO particles, as well as constituting docking and nucleation sites for the Au(SCN)4(-) ions. The Au complex subsequently underwent spontaneous crystallization/reduction without co-addition of reducing or stabilizing agents, yielding Au nanoparticles attached to the ZnO surface. We show that the hybrid Au/ZnO nanoparticles exhibited enhanced photocatalytic properties compared to the plain ZnO nanoparticles.

Citations

Jun 13, 2017·International Journal of Molecular Sciences·Stefan BeislAnton Friedl
Sep 26, 2020·Mikrochimica Acta·Hanh Hong Mai, Ewald Janssens
Jan 11, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Jérémy CureCarole Rossi

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