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Colorimetric determination of dopamine by exploiting the enhanced oxidase mimicking activity of hierarchical NiCo2S4-rGO composites

A composite consisting of NiCo 2 S 4 and reduced graphene oxide (rGO) was prepared via a hydrothermal process. Compared to individual NiCo 2 S 4 nanomaterials or reduced graphene oxide, the composite exhibits enhanced oxidase-like activity. It is found that dopamine (DA) inhibits the ability of NiCo... Full description

Journal Title: Mikrochimica acta (1966) 2018, Vol.185 (10), p.1-9
Main Author: Wang, Yanying
Other Authors: Yang, Li , Liu, Yaqin , Zhao, Qingbiao , Ding, Fang , Zou, Ping , Rao, Hanbing , Wang, Xianxiang
Format: Electronic Article Electronic Article
Language: English
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Publisher: Vienna: Springer Vienna
ID: ISSN: 0026-3672
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recordid: cdi_proquest_miscellaneous_2116851519
title: Colorimetric determination of dopamine by exploiting the enhanced oxidase mimicking activity of hierarchical NiCo2S4-rGO composites
format: Article
creator:
  • Wang, Yanying
  • Yang, Li
  • Liu, Yaqin
  • Zhao, Qingbiao
  • Ding, Fang
  • Zou, Ping
  • Rao, Hanbing
  • Wang, Xianxiang
subjects:
  • Analytical Chemistry
  • Characterization and Evaluation of Materials
  • Chemistry
  • Chemistry and Materials Science
  • Colorimetry
  • Dopamine
  • Graphene
  • Microengineering
  • Nanochemistry
  • Nanomaterials
  • Nanotechnology
  • Original Paper
  • Oxidase
  • Substrates
ispartof: Mikrochimica acta (1966), 2018, Vol.185 (10), p.1-9
description: A composite consisting of NiCo 2 S 4 and reduced graphene oxide (rGO) was prepared via a hydrothermal process. Compared to individual NiCo 2 S 4 nanomaterials or reduced graphene oxide, the composite exhibits enhanced oxidase-like activity. It is found that dopamine (DA) inhibits the ability of NiCo 2 S 4 -rGO to oxidize the substrate 3,3′,5′,5′-tetramethylbenzidine (TMB) to form blue colored ox-TMB. Based on these findings, a colorimetric method for determination of DA was worked out. The absorption, best measured at 652 nm, increases linearly in the 0.5–100 μM DA concentration range, and the limit of detection is 0.42 μM. This method was successfully applied to the detection of DA in spiked human serum samples. Graphical abstract A hierarchical NiCo 2 S 4 -rGO composite was prepared through two-step hydrothermal process. It exhibits enhanced oxidase-like activity which, however, is inhibited by dopamine (DA). Hence, less blue colored ox-TMB is formed by oxidation of 3,3′,5,5′-tetramethylbenzidine in the presence of dopamine.
language: eng
source:
identifier: ISSN: 0026-3672
fulltext: no_fulltext
issn:
  • 0026-3672
  • 1436-5073
url: Link


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titleColorimetric determination of dopamine by exploiting the enhanced oxidase mimicking activity of hierarchical NiCo2S4-rGO composites
creatorWang, Yanying ; Yang, Li ; Liu, Yaqin ; Zhao, Qingbiao ; Ding, Fang ; Zou, Ping ; Rao, Hanbing ; Wang, Xianxiang
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descriptionA composite consisting of NiCo 2 S 4 and reduced graphene oxide (rGO) was prepared via a hydrothermal process. Compared to individual NiCo 2 S 4 nanomaterials or reduced graphene oxide, the composite exhibits enhanced oxidase-like activity. It is found that dopamine (DA) inhibits the ability of NiCo 2 S 4 -rGO to oxidize the substrate 3,3′,5′,5′-tetramethylbenzidine (TMB) to form blue colored ox-TMB. Based on these findings, a colorimetric method for determination of DA was worked out. The absorption, best measured at 652 nm, increases linearly in the 0.5–100 μM DA concentration range, and the limit of detection is 0.42 μM. This method was successfully applied to the detection of DA in spiked human serum samples. Graphical abstract A hierarchical NiCo 2 S 4 -rGO composite was prepared through two-step hydrothermal process. It exhibits enhanced oxidase-like activity which, however, is inhibited by dopamine (DA). Hence, less blue colored ox-TMB is formed by oxidation of 3,3′,5,5′-tetramethylbenzidine in the presence of dopamine.
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subjectAnalytical Chemistry ; Characterization and Evaluation of Materials ; Chemistry ; Chemistry and Materials Science ; Colorimetry ; Dopamine ; Graphene ; Microengineering ; Nanochemistry ; Nanomaterials ; Nanotechnology ; Original Paper ; Oxidase ; Substrates
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descriptionA composite consisting of NiCo 2 S 4 and reduced graphene oxide (rGO) was prepared via a hydrothermal process. Compared to individual NiCo 2 S 4 nanomaterials or reduced graphene oxide, the composite exhibits enhanced oxidase-like activity. It is found that dopamine (DA) inhibits the ability of NiCo 2 S 4 -rGO to oxidize the substrate 3,3′,5′,5′-tetramethylbenzidine (TMB) to form blue colored ox-TMB. Based on these findings, a colorimetric method for determination of DA was worked out. The absorption, best measured at 652 nm, increases linearly in the 0.5–100 μM DA concentration range, and the limit of detection is 0.42 μM. This method was successfully applied to the detection of DA in spiked human serum samples. Graphical abstract A hierarchical NiCo 2 S 4 -rGO composite was prepared through two-step hydrothermal process. It exhibits enhanced oxidase-like activity which, however, is inhibited by dopamine (DA). Hence, less blue colored ox-TMB is formed by oxidation of 3,3′,5,5′-tetramethylbenzidine in the presence of dopamine.
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atitleColorimetric determination of dopamine by exploiting the enhanced oxidase mimicking activity of hierarchical NiCo2S4-rGO composites
jtitleMikrochimica acta (1966)
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date2018-10-04
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abstractA composite consisting of NiCo 2 S 4 and reduced graphene oxide (rGO) was prepared via a hydrothermal process. Compared to individual NiCo 2 S 4 nanomaterials or reduced graphene oxide, the composite exhibits enhanced oxidase-like activity. It is found that dopamine (DA) inhibits the ability of NiCo 2 S 4 -rGO to oxidize the substrate 3,3′,5′,5′-tetramethylbenzidine (TMB) to form blue colored ox-TMB. Based on these findings, a colorimetric method for determination of DA was worked out. The absorption, best measured at 652 nm, increases linearly in the 0.5–100 μM DA concentration range, and the limit of detection is 0.42 μM. This method was successfully applied to the detection of DA in spiked human serum samples. Graphical abstract A hierarchical NiCo 2 S 4 -rGO composite was prepared through two-step hydrothermal process. It exhibits enhanced oxidase-like activity which, however, is inhibited by dopamine (DA). Hence, less blue colored ox-TMB is formed by oxidation of 3,3′,5,5′-tetramethylbenzidine in the presence of dopamine.
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