Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method

Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method

Abstracts: Ag/AgCl/TiO2 nanocomposite was synthesized through the combination of sol-gel process and hydrothermal (HT) method followed by ion exchange method in the paper. Transmission electron microscope, UV–vis absorption property and X-ray diffraction were utilized to characterize the morphology,...

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Main Authors: Qionglian Yang, Mingyu Hu, Jun Guo, Zhenhua Ge, Jing Feng
Format: Article
Language:English
Published: Elsevier 2018-12-01
Series:Journal of Materiomics
Online Access:http://www.sciencedirect.com/science/article/pii/S2352847818300406
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spelling doaj-9b06765a54c2400094b58fb2d210808e2020-11-25T00:05:06ZengElsevierJournal of Materiomics2352-84782018-12-0144402411Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange methodQionglian Yang0Mingyu Hu1Jun Guo2Zhenhua Ge3Jing Feng4Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaFaculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaCorresponding author.; Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaCorresponding authors.; Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, 650093, ChinaAbstracts: Ag/AgCl/TiO2 nanocomposite was synthesized through the combination of sol-gel process and hydrothermal (HT) method followed by ion exchange method in the paper. Transmission electron microscope, UV–vis absorption property and X-ray diffraction were utilized to characterize the morphology, optical absorption property and phase structure of the as-prepared photocatalysts. The morphological and performance studies of Ag/AgCl/TiO2 revealed that a well-interconnected mixed phase heterojunction photocatalyst was achieved through as-prepared TiO2 and the subsequent ion exchange method. By the degradation of Rhodamine B under xenon lamp, Ag/AgCl/TiO2 exhibited a significant enhancement in photocatalytic activity compared with TiO2 and Ag/TiO2. The band gap of Ag/AgCl/TiO2 can reach to 2.53eV compared with 3.22eV of the prepared TiO2. Furthermore, the synthesis process and photoreaction mechanisms of TiO2, Ag/TiO2 and Ag/AgCl/TiO2 photocatalysts were proposed. It demonstrated that the enhancement of photocatalytic was mainly due to the reducing of electron-hole recombination in Ag/AgCl/TiO2. Keywords: Photocatalyst, Ag/AgCl/TiO2, Stability, Nnanoscale, Ion exchange methodhttp://www.sciencedirect.com/science/article/pii/S2352847818300406
collection DOAJ
language English
format Article
sources DOAJ
author Qionglian Yang
Mingyu Hu
Jun Guo
Zhenhua Ge
Jing Feng
spellingShingle Qionglian Yang
Mingyu Hu
Jun Guo
Zhenhua Ge
Jing Feng
Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
Journal of Materiomics
author_facet Qionglian Yang
Mingyu Hu
Jun Guo
Zhenhua Ge
Jing Feng
author_sort Qionglian Yang
title Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
title_short Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
title_full Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
title_fullStr Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
title_full_unstemmed Synthesis and enhanced photocatalytic performance of Ag/AgCl/TiO2 nanocomposites prepared by ion exchange method
title_sort synthesis and enhanced photocatalytic performance of ag/agcl/tio2 nanocomposites prepared by ion exchange method
publisher Elsevier
series Journal of Materiomics
issn 2352-8478
publishDate 2018-12-01
description Abstracts: Ag/AgCl/TiO2 nanocomposite was synthesized through the combination of sol-gel process and hydrothermal (HT) method followed by ion exchange method in the paper. Transmission electron microscope, UV–vis absorption property and X-ray diffraction were utilized to characterize the morphology, optical absorption property and phase structure of the as-prepared photocatalysts. The morphological and performance studies of Ag/AgCl/TiO2 revealed that a well-interconnected mixed phase heterojunction photocatalyst was achieved through as-prepared TiO2 and the subsequent ion exchange method. By the degradation of Rhodamine B under xenon lamp, Ag/AgCl/TiO2 exhibited a significant enhancement in photocatalytic activity compared with TiO2 and Ag/TiO2. The band gap of Ag/AgCl/TiO2 can reach to 2.53eV compared with 3.22eV of the prepared TiO2. Furthermore, the synthesis process and photoreaction mechanisms of TiO2, Ag/TiO2 and Ag/AgCl/TiO2 photocatalysts were proposed. It demonstrated that the enhancement of photocatalytic was mainly due to the reducing of electron-hole recombination in Ag/AgCl/TiO2. Keywords: Photocatalyst, Ag/AgCl/TiO2, Stability, Nnanoscale, Ion exchange method
url http://www.sciencedirect.com/science/article/pii/S2352847818300406
work_keys_str_mv AT qionglianyang synthesisandenhancedphotocatalyticperformanceofagagcltio2nanocompositespreparedbyionexchangemethod
AT mingyuhu synthesisandenhancedphotocatalyticperformanceofagagcltio2nanocompositespreparedbyionexchangemethod
AT junguo synthesisandenhancedphotocatalyticperformanceofagagcltio2nanocompositespreparedbyionexchangemethod
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