The photocatalytic enhancement effect of the one-pot synthesis of Au-Ag nanoparticles on ZnO nanorods prepared on glass substrates

Aditya Yudiana, Vivi Fauzia, Yoki Yulizar, Liszulfah Roza

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The deposition of gold-silver (Au-Ag) nanoparticles on zinc oxide (ZnO) nanorods was successfully done via a one-pot hydrothermal method. The X-ray diffraction (XRD) spectra and Field Emission Scanning Electron Microscopy (FESEM) images showed that the ZnO nanorods had a hexagonal wurtzite crystal structure and the Au-Ag nanoparticles were face-center-cubic crystal spherical-shaped with a diameter ranging from 10 nm to 100 nm. The localized surface plasmon resonance effect of Au-Ag nanoparticles may induce the enhancement absorption in a visible region and also slightly decrease the band gap energy of ZnO nanorods. The room temperature photoluminescence spectra showed that intensity decreased in the range of 370-700 nm due to the decrease in the exciton recombination effect of the ZnO nanorods after deposition of the Au-Ag nanoparticles. The presence of Au-Ag nanoparticles also slightly enhanced the photodegradation rate of methyl blue; this may be because the photoexcited electrons of ZnO were trapped in the Au-Ag nanoparticles, which hinders the recombination of the charge carriers in ZnO and enhances the generation of free radicals for degradation of methyl blue at pH of 5.0 under ultraviolet (UV)-light irradiation.

Original languageEnglish
Title of host publicationNanoscience and Nanotechnology, NANO-SciTech
EditorsMohamad Rusop Mahood, Tetsuo Soga, Shiro Nagaoka, Salifairus bin Mohammad Jafar
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418967
DOIs
Publication statusPublished - 29 Aug 2019
Event9th International Conference on Nanoscience and Nanotechnology 2018, NANO-SciTech 2018 - Selangor, Malaysia
Duration: 26 Feb 20181 Mar 2018

Publication series

NameAIP Conference Proceedings
Volume2151
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference9th International Conference on Nanoscience and Nanotechnology 2018, NANO-SciTech 2018
CountryMalaysia
CitySelangor
Period26/02/181/03/18

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