A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000100048 |
Resumo: | A new fluorescent detection route for chloride ion was designed with Nitrogen-doped graphene quantum dots (N-GQDs), which were prepared by a traditional hydrothermal method with citric acid as carbon source and urea as nitrogen source. The prepared N-GQDs solution was light yellow, and the freeze-dried solid was black. It emitted blue light under ultraviolet light. Meanwhile, The N-GQDs were characterized by TEM, XRD, UV-Vis and fluorescence, the results indicated that the N-GQDs had good dispersibility, photostability and excitation independent emission fluorescence. After addition of Ag+ solution, Ag+ combined to the surface functional groups of N-GQDs, resulting in an obvious quenching of the fluorescence intensity of N-GQDs. Nevertheless, the fluorescence intensity recovered significantly with the addition of Cl- to the N-GQDs/Ag+ system, this was because of AgCl was formed due to the “soft hard acid base principle”. The change of fluorescence intensity had a linear response to the chloride ion concentration in the range of 8.5-300 μmol L-1, with a detection limit (LOD) of 0.1 μmol L-1. To authenticate the application, the proposed method has been successfully used for quantitative analysis of chloride ion in real samples, including artificial sweat and environmental water. |
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A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dotsnitrogen-doped graphene quantum dotschloride ionfluorescenceA new fluorescent detection route for chloride ion was designed with Nitrogen-doped graphene quantum dots (N-GQDs), which were prepared by a traditional hydrothermal method with citric acid as carbon source and urea as nitrogen source. The prepared N-GQDs solution was light yellow, and the freeze-dried solid was black. It emitted blue light under ultraviolet light. Meanwhile, The N-GQDs were characterized by TEM, XRD, UV-Vis and fluorescence, the results indicated that the N-GQDs had good dispersibility, photostability and excitation independent emission fluorescence. After addition of Ag+ solution, Ag+ combined to the surface functional groups of N-GQDs, resulting in an obvious quenching of the fluorescence intensity of N-GQDs. Nevertheless, the fluorescence intensity recovered significantly with the addition of Cl- to the N-GQDs/Ag+ system, this was because of AgCl was formed due to the “soft hard acid base principle”. The change of fluorescence intensity had a linear response to the chloride ion concentration in the range of 8.5-300 μmol L-1, with a detection limit (LOD) of 0.1 μmol L-1. To authenticate the application, the proposed method has been successfully used for quantitative analysis of chloride ion in real samples, including artificial sweat and environmental water.Sociedade Brasileira de Química2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000100048Química Nova v.45 n.1 2022reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170801info:eu-repo/semantics/openAccessFan,XuemeiWang,ShuminLi,ZhejianLiu,PingWang,YimengSun,QiangqiangYu,LingminFan,Xinhuieng2022-03-07T00:00:00Zoai:scielo:S0100-40422022000100048Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2022-03-07T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
title |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
spellingShingle |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots Fan,Xuemei nitrogen-doped graphene quantum dots chloride ion fluorescence |
title_short |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
title_full |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
title_fullStr |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
title_full_unstemmed |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
title_sort |
A novel fluorescence sensor for the detection of chloride ion in artificial sweat and environmental water with nitrogen-doped graphene quantum dots |
author |
Fan,Xuemei |
author_facet |
Fan,Xuemei Wang,Shumin Li,Zhejian Liu,Ping Wang,Yimeng Sun,Qiangqiang Yu,Lingmin Fan,Xinhui |
author_role |
author |
author2 |
Wang,Shumin Li,Zhejian Liu,Ping Wang,Yimeng Sun,Qiangqiang Yu,Lingmin Fan,Xinhui |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Fan,Xuemei Wang,Shumin Li,Zhejian Liu,Ping Wang,Yimeng Sun,Qiangqiang Yu,Lingmin Fan,Xinhui |
dc.subject.por.fl_str_mv |
nitrogen-doped graphene quantum dots chloride ion fluorescence |
topic |
nitrogen-doped graphene quantum dots chloride ion fluorescence |
description |
A new fluorescent detection route for chloride ion was designed with Nitrogen-doped graphene quantum dots (N-GQDs), which were prepared by a traditional hydrothermal method with citric acid as carbon source and urea as nitrogen source. The prepared N-GQDs solution was light yellow, and the freeze-dried solid was black. It emitted blue light under ultraviolet light. Meanwhile, The N-GQDs were characterized by TEM, XRD, UV-Vis and fluorescence, the results indicated that the N-GQDs had good dispersibility, photostability and excitation independent emission fluorescence. After addition of Ag+ solution, Ag+ combined to the surface functional groups of N-GQDs, resulting in an obvious quenching of the fluorescence intensity of N-GQDs. Nevertheless, the fluorescence intensity recovered significantly with the addition of Cl- to the N-GQDs/Ag+ system, this was because of AgCl was formed due to the “soft hard acid base principle”. The change of fluorescence intensity had a linear response to the chloride ion concentration in the range of 8.5-300 μmol L-1, with a detection limit (LOD) of 0.1 μmol L-1. To authenticate the application, the proposed method has been successfully used for quantitative analysis of chloride ion in real samples, including artificial sweat and environmental water. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000100048 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422022000100048 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21577/0100-4042.20170801 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.45 n.1 2022 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318121546153984 |