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Title: Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances

Abstract

Novel Ag/AgI/BiOI composites were controllably synthesized via a facile ion-exchange followed by photoreduction strategy by using hierarchical BiOI microflower as substrate. The as-prepared Ag/AgI/BiOI composites were studied by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface area analyzer and UV–vis diffuse reflectance spectroscopy (DRS). Under visible light (λ>420 nm), Ag/AgI/BiOI displayed highly enhanced photocatalytic activities for degradation of methyl orange (MO) compared to the pure hierarchical BiOI, which was mainly ascribed to the highly efficient separation of electrons and holes through the closely contacted interfaces in the Ag/AgI/BiOI ternary system. - Graphical abstract: Ag/AgI/BiOI displayed excellent photocatalytic activities for methyl orange degradation under visible light, which was mainly ascribed to the highly efficient separation of electrons and holes through Z-scheme pathway. Display Omitted - Highlights: • Novel Ag/AgI/BiOI composites were successfully synthesized. • Ag/AgI/BiOI displayed higher visible light activities than those of pure BiOI and AgI. • ·O{sub 2}{sup −} and h{sup +}, especially ·O{sub 2}{sup −}, dominated the photodegradation process of MO. • A Z-scheme pattern was adopted for Ag/AgI/BiOI activity enhancement.

Authors:
 [1]; ; ;  [1];  [1]
  1. College of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, Anhui (China)
Publication Date:
OSTI Identifier:
22274102
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 206; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; INTERFACES; ION EXCHANGE; PHOTOCATALYSIS; POWDERS; SCANNING ELECTRON MICROSCOPY; SILVER IODIDES; SURFACE AREA; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY; X RADIATION; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Cao, Jing, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Zhao, Yijie, Lin, Haili, Xu, Benyan, and Chen, Shifu. Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances. United States: N. p., 2013. Web. doi:10.1016/J.JSSC.2013.07.028.
Cao, Jing, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Zhao, Yijie, Lin, Haili, Xu, Benyan, & Chen, Shifu. Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances. United States. https://doi.org/10.1016/J.JSSC.2013.07.028
Cao, Jing, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, Zhao, Yijie, Lin, Haili, Xu, Benyan, and Chen, Shifu. 2013. "Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances". United States. https://doi.org/10.1016/J.JSSC.2013.07.028.
@article{osti_22274102,
title = {Facile synthesis of novel Ag/AgI/BiOI composites with highly enhanced visible light photocatalytic performances},
author = {Cao, Jing and State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 and Zhao, Yijie and Lin, Haili and Xu, Benyan and Chen, Shifu},
abstractNote = {Novel Ag/AgI/BiOI composites were controllably synthesized via a facile ion-exchange followed by photoreduction strategy by using hierarchical BiOI microflower as substrate. The as-prepared Ag/AgI/BiOI composites were studied by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) surface area analyzer and UV–vis diffuse reflectance spectroscopy (DRS). Under visible light (λ>420 nm), Ag/AgI/BiOI displayed highly enhanced photocatalytic activities for degradation of methyl orange (MO) compared to the pure hierarchical BiOI, which was mainly ascribed to the highly efficient separation of electrons and holes through the closely contacted interfaces in the Ag/AgI/BiOI ternary system. - Graphical abstract: Ag/AgI/BiOI displayed excellent photocatalytic activities for methyl orange degradation under visible light, which was mainly ascribed to the highly efficient separation of electrons and holes through Z-scheme pathway. Display Omitted - Highlights: • Novel Ag/AgI/BiOI composites were successfully synthesized. • Ag/AgI/BiOI displayed higher visible light activities than those of pure BiOI and AgI. • ·O{sub 2}{sup −} and h{sup +}, especially ·O{sub 2}{sup −}, dominated the photodegradation process of MO. • A Z-scheme pattern was adopted for Ag/AgI/BiOI activity enhancement.},
doi = {10.1016/J.JSSC.2013.07.028},
url = {https://www.osti.gov/biblio/22274102}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = ,
volume = 206,
place = {United States},
year = {Tue Oct 15 00:00:00 EDT 2013},
month = {Tue Oct 15 00:00:00 EDT 2013}
}