Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing

Inorganic pollutants in water can have an important impact on ecosystems and human health, so the development of rapid and sensitive detection methods for typical inorganic pollutants in water samples is important for understanding the pollution status of the water environment, as well as water poll...

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Autores principales:	Guihua Zheng, Shiyao Li, Ting Zhang, Feiyun Zhu, Jing Sun, Shuangjiang Li, Linfeng You
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Technology (General) T1-995
Acceso en línea:	https://doaj.org/article/aa3e35a9d6dd4ce2bb6b872775c8af45
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spelling	oai:doaj.org-article:aa3e35a9d6dd4ce2bb6b872775c8af452021-11-08T02:36:51ZWater Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing1687-726810.1155/2021/8704363https://doaj.org/article/aa3e35a9d6dd4ce2bb6b872775c8af452021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/8704363https://doaj.org/toc/1687-7268Inorganic pollutants in water can have an important impact on ecosystems and human health, so the development of rapid and sensitive detection methods for typical inorganic pollutants in water samples is important for understanding the pollution status of the water environment, as well as water pollution prevention and protection of drinking water safety. Fluorescence sensing technology has the advantages of fast response, high sensitivity, simple operation, and low cost but still has the problems of low quantum yield, cumbersome construction process, and limited practical applications. Based on the excellent fluorescence properties, a series of fluorescence sensing was constructed for the rapid, highly sensitive, and selective detection of various typical inorganic pollutants in water. And the related fluorescence sensing mechanism was investigated in this paper. In this paper, nitrogen/sulfur codoped carbon quantum dots (N, S-CQDs) were prepared for the sensitive and selective detection of sulfide and ferric ion. The blue fluorescent N, S-CQDs were prepared by a one-step hydrothermal method using ammonium citrate and L-cysteine as raw materials, which have excitation wavelength dependence and fluorescence quantum yield of 16.1% for the selective detection of sulfides with a detection limit (S/N=3) of 11.0 nM (about 0.35 μg/L). CQDs with significantly higher fluorescence quantum yields (69%) and no excitation dependence were prepared when citric acid was used instead of ammonium citrate and were used for the selective detection of ferric ion with a detection limit of 14.0 nM (~0.8 μg/L). The method has been successfully applied to the determination of total phosphorus in surface water and human urine, and the fluorescence color change of the dual-emission sensing can be used for the naked-eye identification and semiquantitative detection of phosphate.Guihua ZhengShiyao LiTing ZhangFeiyun ZhuJing SunShuangjiang LiLinfeng YouHindawi LimitedarticleTechnology (General)T1-995ENJournal of Sensors, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology (General) T1-995
spellingShingle	Technology (General) T1-995 Guihua Zheng Shiyao Li Ting Zhang Feiyun Zhu Jing Sun Shuangjiang Li Linfeng You Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
description	Inorganic pollutants in water can have an important impact on ecosystems and human health, so the development of rapid and sensitive detection methods for typical inorganic pollutants in water samples is important for understanding the pollution status of the water environment, as well as water pollution prevention and protection of drinking water safety. Fluorescence sensing technology has the advantages of fast response, high sensitivity, simple operation, and low cost but still has the problems of low quantum yield, cumbersome construction process, and limited practical applications. Based on the excellent fluorescence properties, a series of fluorescence sensing was constructed for the rapid, highly sensitive, and selective detection of various typical inorganic pollutants in water. And the related fluorescence sensing mechanism was investigated in this paper. In this paper, nitrogen/sulfur codoped carbon quantum dots (N, S-CQDs) were prepared for the sensitive and selective detection of sulfide and ferric ion. The blue fluorescent N, S-CQDs were prepared by a one-step hydrothermal method using ammonium citrate and L-cysteine as raw materials, which have excitation wavelength dependence and fluorescence quantum yield of 16.1% for the selective detection of sulfides with a detection limit (S/N=3) of 11.0 nM (about 0.35 μg/L). CQDs with significantly higher fluorescence quantum yields (69%) and no excitation dependence were prepared when citric acid was used instead of ammonium citrate and were used for the selective detection of ferric ion with a detection limit of 14.0 nM (~0.8 μg/L). The method has been successfully applied to the determination of total phosphorus in surface water and human urine, and the fluorescence color change of the dual-emission sensing can be used for the naked-eye identification and semiquantitative detection of phosphate.
format	article
author	Guihua Zheng Shiyao Li Ting Zhang Feiyun Zhu Jing Sun Shuangjiang Li Linfeng You
author_facet	Guihua Zheng Shiyao Li Ting Zhang Feiyun Zhu Jing Sun Shuangjiang Li Linfeng You
author_sort	Guihua Zheng
title	Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
title_short	Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
title_full	Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
title_fullStr	Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
title_full_unstemmed	Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing
title_sort	water pollution control and treatment based on quantum dot chemical and biological high-sensitivity sensing
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/aa3e35a9d6dd4ce2bb6b872775c8af45
work_keys_str_mv	AT guihuazheng waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT shiyaoli waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT tingzhang waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT feiyunzhu waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT jingsun waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT shuangjiangli waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing AT linfengyou waterpollutioncontrolandtreatmentbasedonquantumdotchemicalandbiologicalhighsensitivitysensing
_version_	1718443126241099776

Water Pollution Control and Treatment Based on Quantum Dot Chemical and Biological High-Sensitivity Sensing

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