Light-induced degradation of rhodamine B by tellurium quantum dots

Tellurium quantum dots (Te QDs) were prepared using bulk tellurium as the precursor. Te QDs can be a highly active photocatalyst for boosting the photocatalytic degradation of rhodamine B (RhB) under visible light irradiation. The morphology and composition of Te QDs were characterized by transmissi...

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Autores principales:	Hong Yu, Xiuyun Yang, Donghui Zhang, Manran Guo, Yue Hou, Leijiao Li, Siqi Bao
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	dye degradation photocatalyst quantum dots tellurium-based materials Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/29c81ce5052d4d5eb49ac6a668c33c93
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spelling	oai:doaj.org-article:29c81ce5052d4d5eb49ac6a668c33c932021-11-06T10:48:21ZLight-induced degradation of rhodamine B by tellurium quantum dots0273-12231996-973210.2166/wst.2021.003https://doaj.org/article/29c81ce5052d4d5eb49ac6a668c33c932021-02-01T00:00:00Zhttp://wst.iwaponline.com/content/83/4/751https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Tellurium quantum dots (Te QDs) were prepared using bulk tellurium as the precursor. Te QDs can be a highly active photocatalyst for boosting the photocatalytic degradation of rhodamine B (RhB) under visible light irradiation. The morphology and composition of Te QDs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results showed that in the presence of H2O2, the photocatalytic efficiency of Te QDs on RhB could achieve a good degradation effect within a very short time (30 min). The effects of initial dye concentration, pH value, light intensity, catalyst dosage and H2O2 concentration on dye degradation were successively studied. The effects of inorganic ions (NO3−, Cl−, SO42−, Ca2+, Mg2+ and Fe3+) on photocatalytic degradation were also discussed. Experimental results of free radical capture showed that OH• and O2•− played important roles in photocatalytic degradation. More importantly, Te QDs efficiency still remained above 85% after four cycles of use, indicating good stability, recyclability and utility. This work may inspire further design of other semiconductor QDs for highly efficient dye degradation.Hong YuXiuyun YangDonghui ZhangManran GuoYue HouLeijiao LiSiqi BaoIWA Publishingarticledye degradationphotocatalystquantum dotstellurium-based materialsEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 83, Iss 4, Pp 751-761 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	dye degradation photocatalyst quantum dots tellurium-based materials Environmental technology. Sanitary engineering TD1-1066
spellingShingle	dye degradation photocatalyst quantum dots tellurium-based materials Environmental technology. Sanitary engineering TD1-1066 Hong Yu Xiuyun Yang Donghui Zhang Manran Guo Yue Hou Leijiao Li Siqi Bao Light-induced degradation of rhodamine B by tellurium quantum dots
description	Tellurium quantum dots (Te QDs) were prepared using bulk tellurium as the precursor. Te QDs can be a highly active photocatalyst for boosting the photocatalytic degradation of rhodamine B (RhB) under visible light irradiation. The morphology and composition of Te QDs were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results showed that in the presence of H2O2, the photocatalytic efficiency of Te QDs on RhB could achieve a good degradation effect within a very short time (30 min). The effects of initial dye concentration, pH value, light intensity, catalyst dosage and H2O2 concentration on dye degradation were successively studied. The effects of inorganic ions (NO3−, Cl−, SO42−, Ca2+, Mg2+ and Fe3+) on photocatalytic degradation were also discussed. Experimental results of free radical capture showed that OH• and O2•− played important roles in photocatalytic degradation. More importantly, Te QDs efficiency still remained above 85% after four cycles of use, indicating good stability, recyclability and utility. This work may inspire further design of other semiconductor QDs for highly efficient dye degradation.
format	article
author	Hong Yu Xiuyun Yang Donghui Zhang Manran Guo Yue Hou Leijiao Li Siqi Bao
author_facet	Hong Yu Xiuyun Yang Donghui Zhang Manran Guo Yue Hou Leijiao Li Siqi Bao
author_sort	Hong Yu
title	Light-induced degradation of rhodamine B by tellurium quantum dots
title_short	Light-induced degradation of rhodamine B by tellurium quantum dots
title_full	Light-induced degradation of rhodamine B by tellurium quantum dots
title_fullStr	Light-induced degradation of rhodamine B by tellurium quantum dots
title_full_unstemmed	Light-induced degradation of rhodamine B by tellurium quantum dots
title_sort	light-induced degradation of rhodamine b by tellurium quantum dots
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/29c81ce5052d4d5eb49ac6a668c33c93
work_keys_str_mv	AT hongyu lightinduceddegradationofrhodaminebbytelluriumquantumdots AT xiuyunyang lightinduceddegradationofrhodaminebbytelluriumquantumdots AT donghuizhang lightinduceddegradationofrhodaminebbytelluriumquantumdots AT manranguo lightinduceddegradationofrhodaminebbytelluriumquantumdots AT yuehou lightinduceddegradationofrhodaminebbytelluriumquantumdots AT leijiaoli lightinduceddegradationofrhodaminebbytelluriumquantumdots AT siqibao lightinduceddegradationofrhodaminebbytelluriumquantumdots
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Light-induced degradation of rhodamine B by tellurium quantum dots

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