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Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light
Ag@AgCl core–shell nanowires were synthesized by oxidation of Ag nanowires with moderate FeCl(3), which exhibited excellent photocatalytic activity for As(III) oxidation under visible light. It was proved that the photocatalytic oxidation efficiency was significantly dependent on the mole ratio of A...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380557/ https://www.ncbi.nlm.nih.gov/pubmed/28381073 http://dx.doi.org/10.1186/s11671-017-2017-9 |
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author | Qin, Yanyan Cui, Yanping Tian, Zhen Wu, Yangling Li, Yilian |
author_facet | Qin, Yanyan Cui, Yanping Tian, Zhen Wu, Yangling Li, Yilian |
author_sort | Qin, Yanyan |
collection | PubMed |
description | Ag@AgCl core–shell nanowires were synthesized by oxidation of Ag nanowires with moderate FeCl(3), which exhibited excellent photocatalytic activity for As(III) oxidation under visible light. It was proved that the photocatalytic oxidation efficiency was significantly dependent on the mole ratio of Ag:AgCl. The oxidation rate of As(III) over Ag@AgCl core–shell nanowires first increased with the decrease of Ag(0) percentage, up until the optimized synthesis mole ratio of Ag nanowires:FeCl(3) was 2.32:2.20, with 0.023 mg L(−1) min(−1) As(III) oxidation rate; subsequently, the oxidation rate dropped with the further decrease of Ag(0) percentage. Effects of the pH, ionic strength, and concentration of humic acid on Ag@AgCl photocatalytic ability were also studied. Trapping experiments using radical scavengers confirmed that h(+) and ·O(2) (−) acted as the main active species during the visible-light-driven photocatalytic process for As(III) oxidation. The recycling experiments validated that Ag@AgCl core–shell nanowires were a kind of efficient and stable photocatalyst for As(III) oxidation under visible-light irradiation. |
format | Online Article Text |
id | pubmed-5380557 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-53805572017-04-20 Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light Qin, Yanyan Cui, Yanping Tian, Zhen Wu, Yangling Li, Yilian Nanoscale Res Lett Nano Express Ag@AgCl core–shell nanowires were synthesized by oxidation of Ag nanowires with moderate FeCl(3), which exhibited excellent photocatalytic activity for As(III) oxidation under visible light. It was proved that the photocatalytic oxidation efficiency was significantly dependent on the mole ratio of Ag:AgCl. The oxidation rate of As(III) over Ag@AgCl core–shell nanowires first increased with the decrease of Ag(0) percentage, up until the optimized synthesis mole ratio of Ag nanowires:FeCl(3) was 2.32:2.20, with 0.023 mg L(−1) min(−1) As(III) oxidation rate; subsequently, the oxidation rate dropped with the further decrease of Ag(0) percentage. Effects of the pH, ionic strength, and concentration of humic acid on Ag@AgCl photocatalytic ability were also studied. Trapping experiments using radical scavengers confirmed that h(+) and ·O(2) (−) acted as the main active species during the visible-light-driven photocatalytic process for As(III) oxidation. The recycling experiments validated that Ag@AgCl core–shell nanowires were a kind of efficient and stable photocatalyst for As(III) oxidation under visible-light irradiation. Springer US 2017-04-04 /pmc/articles/PMC5380557/ /pubmed/28381073 http://dx.doi.org/10.1186/s11671-017-2017-9 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Nano Express Qin, Yanyan Cui, Yanping Tian, Zhen Wu, Yangling Li, Yilian Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title | Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title_full | Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title_fullStr | Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title_full_unstemmed | Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title_short | Synthesis of AG@AgCl Core–Shell Structure Nanowires and Its Photocatalytic Oxidation of Arsenic (III) Under Visible Light |
title_sort | synthesis of ag@agcl core–shell structure nanowires and its photocatalytic oxidation of arsenic (iii) under visible light |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5380557/ https://www.ncbi.nlm.nih.gov/pubmed/28381073 http://dx.doi.org/10.1186/s11671-017-2017-9 |
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