Issue 100, 2014

Controllable fabrication and photocatalysis of ZnO/Au nanohybrids via regenerative ion exchange and reduction cycles

Abstract

A facile and convenient approach was introduced to fabricate ZnO/Au nanohybrids with tunable Au contents. The repeated loading of Au nanoparticles on the surface of ZnO nanorods was achieved via 3-aminopropyltriethoxysilane-mediated regenerative exchange of AuCl4 ions and subsequent reduction cycles. X-ray diffraction, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, and transmission electron microscopy were all used to characterize as-prepared ZnO/Au nanohybrids. The attachment of Au nanoparticles onto the ZnO supports significantly altered the interfacial charge transfer process and resulted in a marked decrease in the intensity of photoluminescence peaks. Owing to their special geometry, electronic structure, and particular interphase boundaries, such ZnO/Au nanohybrids exhibited enhanced photocatalytic performance, and hold promising applications in water purification and antibacterial products.

Graphical abstract: Controllable fabrication and photocatalysis of ZnO/Au nanohybrids via regenerative ion exchange and reduction cycles

Article information

Article type
Paper
Submitted
22 Sep 2014
Accepted
27 Oct 2014
First published
03 Nov 2014

RSC Adv., 2014,4, 56945-56951

Controllable fabrication and photocatalysis of ZnO/Au nanohybrids via regenerative ion exchange and reduction cycles

X. Hou and L. Wang, RSC Adv., 2014, 4, 56945 DOI: 10.1039/C4RA10785C

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