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Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity
Carbon quantum dots were successfully doped into anatase TiO(2) single crystal nanosheets (TNS) with exposed {001} and {101} reactive facets by a facile solvothermal process. SEM and TEM confirmed the as-prepared TiO(2) nanosheet structure and that the dominant exposed face is the {001} facet, and t...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9060303/ https://www.ncbi.nlm.nih.gov/pubmed/35518064 http://dx.doi.org/10.1039/c8ra10311a |
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author | Huang, Hongqin Ouyang, Hao Han, Tiehu Wang, Huigang Zheng, Xuming |
author_facet | Huang, Hongqin Ouyang, Hao Han, Tiehu Wang, Huigang Zheng, Xuming |
author_sort | Huang, Hongqin |
collection | PubMed |
description | Carbon quantum dots were successfully doped into anatase TiO(2) single crystal nanosheets (TNS) with exposed {001} and {101} reactive facets by a facile solvothermal process. SEM and TEM confirmed the as-prepared TiO(2) nanosheet structure and that the dominant exposed face is the {001} facet, and the loaded N-CDs are nearly spherical with an average size of about 3 nm. XPS results confirmed that the deposited N-CDs were chemically integrated into the TiO(2) nanosheets. UV-vis DRS spectroscopy shows that with the dotting of N-CDs, the absorption edge of N-CDs/TNS has been extended into the visible light region. The ability of the N-CDs/TNS to degrade Rhodamine B (RhB) in aqueous solution under visible light irradiation (λ ≥ 400 nm) was investigated. The results show that the photocatalytic performance of N-CDs/TNS was substantially improved relative to pure TNS. The photodegradation efficiency reached its maximum value with 6 mL of N-CDs/TNS, showing a 9.3-fold improvement in photocatalytic activity over TNS. Fluorescence spectroscopy (PL) and electron paramagnetic resonance (EPR) studies were conducted to characterize the active species during the degradation period, based on which the possible photodegradation mechanism of N-CDs/TNS by visible light irradiation was given. |
format | Online Article Text |
id | pubmed-9060303 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90603032022-05-04 Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity Huang, Hongqin Ouyang, Hao Han, Tiehu Wang, Huigang Zheng, Xuming RSC Adv Chemistry Carbon quantum dots were successfully doped into anatase TiO(2) single crystal nanosheets (TNS) with exposed {001} and {101} reactive facets by a facile solvothermal process. SEM and TEM confirmed the as-prepared TiO(2) nanosheet structure and that the dominant exposed face is the {001} facet, and the loaded N-CDs are nearly spherical with an average size of about 3 nm. XPS results confirmed that the deposited N-CDs were chemically integrated into the TiO(2) nanosheets. UV-vis DRS spectroscopy shows that with the dotting of N-CDs, the absorption edge of N-CDs/TNS has been extended into the visible light region. The ability of the N-CDs/TNS to degrade Rhodamine B (RhB) in aqueous solution under visible light irradiation (λ ≥ 400 nm) was investigated. The results show that the photocatalytic performance of N-CDs/TNS was substantially improved relative to pure TNS. The photodegradation efficiency reached its maximum value with 6 mL of N-CDs/TNS, showing a 9.3-fold improvement in photocatalytic activity over TNS. Fluorescence spectroscopy (PL) and electron paramagnetic resonance (EPR) studies were conducted to characterize the active species during the degradation period, based on which the possible photodegradation mechanism of N-CDs/TNS by visible light irradiation was given. The Royal Society of Chemistry 2019-01-25 /pmc/articles/PMC9060303/ /pubmed/35518064 http://dx.doi.org/10.1039/c8ra10311a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Huang, Hongqin Ouyang, Hao Han, Tiehu Wang, Huigang Zheng, Xuming Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title | Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title_full | Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title_fullStr | Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title_full_unstemmed | Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title_short | Construction of carbon quantum dots/single crystal TiO(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
title_sort | construction of carbon quantum dots/single crystal tio(2) nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9060303/ https://www.ncbi.nlm.nih.gov/pubmed/35518064 http://dx.doi.org/10.1039/c8ra10311a |
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