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Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation
BiSnSbO(6) with strong photocatalytic activity was first fabricated by a high-temperature, solid-state sintering method. The resulting BiSnSbO(6) was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spect...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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MDPI
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5951337/ https://www.ncbi.nlm.nih.gov/pubmed/29587420 http://dx.doi.org/10.3390/ma11040491 |
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author | Luan, Jingfei Huang, Panqi |
author_facet | Luan, Jingfei Huang, Panqi |
author_sort | Luan, Jingfei |
collection | PubMed |
description | BiSnSbO(6) with strong photocatalytic activity was first fabricated by a high-temperature, solid-state sintering method. The resulting BiSnSbO(6) was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS). The results showed that BiSnSbO(6), with a pyrochlore structure and a cubic crystal system by a space group Fd3m, was well crystallized. The lattice parameter or the band gap of BiSnSbO(6) was 10.234594 Å or 2.83 eV. Compared with N-doped TiO(2), BiSnSbO(6) showed higher photocatalytic activity in the degradation of benzotriazole and rhodamine B. The apparent first-order rate constant for BiSnSbO(6) in the degradation of benzotriazole and rhodamine B was 0.0182 min(−1) and 0.0147 min(−1), respectively. On the basis of the scavenger experiment, during the photocatalytic process, the main active species were arranged in order of increasing photodegradation rate: •OH < •O(2)(−) < h(+). The removal rate of benzotriazole or rhodamine B was approximately estimated to be 100% with BiSnSbO(6) as a photocatalyst after 200 min visible-light irradiation. Plentiful CO(2) produced by the experiment indicated that benzotriazole or rhodamine B was continuously mineralized during the photocatalytic process. Finally, the possible photodegradation pathways of benzotriazole and rhodamine B were deduced. |
format | Online Article Text |
id | pubmed-5951337 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-59513372018-05-15 Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation Luan, Jingfei Huang, Panqi Materials (Basel) Article BiSnSbO(6) with strong photocatalytic activity was first fabricated by a high-temperature, solid-state sintering method. The resulting BiSnSbO(6) was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS). The results showed that BiSnSbO(6), with a pyrochlore structure and a cubic crystal system by a space group Fd3m, was well crystallized. The lattice parameter or the band gap of BiSnSbO(6) was 10.234594 Å or 2.83 eV. Compared with N-doped TiO(2), BiSnSbO(6) showed higher photocatalytic activity in the degradation of benzotriazole and rhodamine B. The apparent first-order rate constant for BiSnSbO(6) in the degradation of benzotriazole and rhodamine B was 0.0182 min(−1) and 0.0147 min(−1), respectively. On the basis of the scavenger experiment, during the photocatalytic process, the main active species were arranged in order of increasing photodegradation rate: •OH < •O(2)(−) < h(+). The removal rate of benzotriazole or rhodamine B was approximately estimated to be 100% with BiSnSbO(6) as a photocatalyst after 200 min visible-light irradiation. Plentiful CO(2) produced by the experiment indicated that benzotriazole or rhodamine B was continuously mineralized during the photocatalytic process. Finally, the possible photodegradation pathways of benzotriazole and rhodamine B were deduced. MDPI 2018-03-26 /pmc/articles/PMC5951337/ /pubmed/29587420 http://dx.doi.org/10.3390/ma11040491 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Luan, Jingfei Huang, Panqi Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title | Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title_full | Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title_fullStr | Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title_full_unstemmed | Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title_short | Photophysical and Photocatalytic Properties of BiSnSbO(6) under Visible Light Irradiation |
title_sort | photophysical and photocatalytic properties of bisnsbo(6) under visible light irradiation |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5951337/ https://www.ncbi.nlm.nih.gov/pubmed/29587420 http://dx.doi.org/10.3390/ma11040491 |
work_keys_str_mv | AT luanjingfei photophysicalandphotocatalyticpropertiesofbisnsbo6undervisiblelightirradiation AT huangpanqi photophysicalandphotocatalyticpropertiesofbisnsbo6undervisiblelightirradiation |