Efficient Visual Chemosensor for Hexavalent Chromium via a Controlled Strategy for Signal Amplification in Water

Generally, 3,3′,5,5′-tetramethylbenzidine (TMB) cannot react with hydrogen peroxide (H2O2) in neutral pH or in water at room temperature and pressure. Herein, we found that hexavalent chromium (Cr6+) can trigger TMB reacting with H2O2 (TMB–H2O2) in ultrapure water along with a weak signal output. Th...

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Veröffentlicht in:	Analytical chemistry (Washington) 2020-02, Vol.92 (4), p.3426-3433
Hauptverfasser:	Zhang, Teng, Zhang, Shouting, Liu, Jia, Li, Jing, Lu, Xiaoquan
Format:	Artikel
Sprache:	eng
Schlagworte:	Amplification Analytical chemistry Benzidines - chemistry Chemical bonds Chemical sensors Chemistry Chemoreceptors Chromium Chromium - analysis Environmental monitoring Gold Gold - chemistry Graphene Graphite - chemistry Hexavalent chromium Hydrogen peroxide Hydrogen Peroxide - chemistry Interference immunity Metal Nanoparticles - chemistry Nanoparticles Organic chemistry Peroxidase Polyethyleneimine Polyethyleneimine - chemistry Room temperature Selectivity Visual signals Water Pollutants, Chemical - analysis
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creator	Zhang, Teng Zhang, Shouting Liu, Jia Li, Jing Lu, Xiaoquan
description	Generally, 3,3′,5,5′-tetramethylbenzidine (TMB) cannot react with hydrogen peroxide (H2O2) in neutral pH or in water at room temperature and pressure. Herein, we found that hexavalent chromium (Cr6+) can trigger TMB reacting with H2O2 (TMB–H2O2) in ultrapure water along with a weak signal output. Then, to implement signal amplification effectively, we designed a ternary nanohybrid material containing graphene oxide (GO) nanosheets, gold nanoparticles (Au NPs), and hyperbranched polyethylenimine (PEI) to form rGO/PEI/Au nanohybrids via chemical bonding. After addition of a trace amount of Cr6+, rGO/PEI/Au nanohybrids can effectively catalyze TMB–H2O2 in ultrapure water; thus, a visual chemosensor and electronic spectrum quantitative analysis method for Cr6+ based on chromium-stimulated peroxidase mimetic activity of rGO/PEI/Au nanohybrids were established. The visual chemosensor exhibits excellent selectivity and interference immunity against 34 other interfering substances with a detection limit as low as 2.14 nM. The visual chemosensor for Cr6+ with a low detection limit and high selectivity is expected to have a potential application in environmental analysis, monitoring, and human health maintenance.
doi_str_mv	10.1021/acs.analchem.9b05532
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Chem</addtitle><description>Generally, 3,3′,5,5′-tetramethylbenzidine (TMB) cannot react with hydrogen peroxide (H2O2) in neutral pH or in water at room temperature and pressure. Herein, we found that hexavalent chromium (Cr6+) can trigger TMB reacting with H2O2 (TMB–H2O2) in ultrapure water along with a weak signal output. Then, to implement signal amplification effectively, we designed a ternary nanohybrid material containing graphene oxide (GO) nanosheets, gold nanoparticles (Au NPs), and hyperbranched polyethylenimine (PEI) to form rGO/PEI/Au nanohybrids via chemical bonding. After addition of a trace amount of Cr6+, rGO/PEI/Au nanohybrids can effectively catalyze TMB–H2O2 in ultrapure water; thus, a visual chemosensor and electronic spectrum quantitative analysis method for Cr6+ based on chromium-stimulated peroxidase mimetic activity of rGO/PEI/Au nanohybrids were established. The visual chemosensor exhibits excellent selectivity and interference immunity against 34 other interfering substances with a detection limit as low as 2.14 nM. 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Zhang, Shouting ; Liu, Jia ; Li, Jing ; Lu, Xiaoquan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a413t-ac824f32aa4b50f10a60c3ae7a566c6913f11fab09ac50df3d77267d6c06e73e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Amplification</topic><topic>Analytical chemistry</topic><topic>Benzidines - chemistry</topic><topic>Chemical bonds</topic><topic>Chemical sensors</topic><topic>Chemistry</topic><topic>Chemoreceptors</topic><topic>Chromium</topic><topic>Chromium - analysis</topic><topic>Environmental monitoring</topic><topic>Gold</topic><topic>Gold - chemistry</topic><topic>Graphene</topic><topic>Graphite - chemistry</topic><topic>Hexavalent chromium</topic><topic>Hydrogen peroxide</topic><topic>Hydrogen Peroxide - chemistry</topic><topic>Interference immunity</topic><topic>Metal Nanoparticles - chemistry</topic><topic>Nanoparticles</topic><topic>Organic chemistry</topic><topic>Peroxidase</topic><topic>Polyethyleneimine</topic><topic>Polyethyleneimine - chemistry</topic><topic>Room temperature</topic><topic>Selectivity</topic><topic>Visual signals</topic><topic>Water Pollutants, Chemical - analysis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Teng</creatorcontrib><creatorcontrib>Zhang, Shouting</creatorcontrib><creatorcontrib>Liu, Jia</creatorcontrib><creatorcontrib>Li, Jing</creatorcontrib><creatorcontrib>Lu, Xiaoquan</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Analytical chemistry (Washington)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Teng</au><au>Zhang, Shouting</au><au>Liu, Jia</au><au>Li, Jing</au><au>Lu, Xiaoquan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Efficient Visual Chemosensor for Hexavalent Chromium via a Controlled Strategy for Signal Amplification in Water</atitle><jtitle>Analytical chemistry (Washington)</jtitle><addtitle>Anal. Chem</addtitle><date>2020-02-18</date><risdate>2020</risdate><volume>92</volume><issue>4</issue><spage>3426</spage><epage>3433</epage><pages>3426-3433</pages><issn>0003-2700</issn><eissn>1520-6882</eissn><abstract>Generally, 3,3′,5,5′-tetramethylbenzidine (TMB) cannot react with hydrogen peroxide (H2O2) in neutral pH or in water at room temperature and pressure. Herein, we found that hexavalent chromium (Cr6+) can trigger TMB reacting with H2O2 (TMB–H2O2) in ultrapure water along with a weak signal output. Then, to implement signal amplification effectively, we designed a ternary nanohybrid material containing graphene oxide (GO) nanosheets, gold nanoparticles (Au NPs), and hyperbranched polyethylenimine (PEI) to form rGO/PEI/Au nanohybrids via chemical bonding. After addition of a trace amount of Cr6+, rGO/PEI/Au nanohybrids can effectively catalyze TMB–H2O2 in ultrapure water; thus, a visual chemosensor and electronic spectrum quantitative analysis method for Cr6+ based on chromium-stimulated peroxidase mimetic activity of rGO/PEI/Au nanohybrids were established. The visual chemosensor exhibits excellent selectivity and interference immunity against 34 other interfering substances with a detection limit as low as 2.14 nM. The visual chemosensor for Cr6+ with a low detection limit and high selectivity is expected to have a potential application in environmental analysis, monitoring, and human health maintenance.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>31964141</pmid><doi>10.1021/acs.analchem.9b05532</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0003-2375-668X</orcidid></addata></record>
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subjects	Amplification Analytical chemistry Benzidines - chemistry Chemical bonds Chemical sensors Chemistry Chemoreceptors Chromium Chromium - analysis Environmental monitoring Gold Gold - chemistry Graphene Graphite - chemistry Hexavalent chromium Hydrogen peroxide Hydrogen Peroxide - chemistry Interference immunity Metal Nanoparticles - chemistry Nanoparticles Organic chemistry Peroxidase Polyethyleneimine Polyethyleneimine - chemistry Room temperature Selectivity Visual signals Water Pollutants, Chemical - analysis
title	Efficient Visual Chemosensor for Hexavalent Chromium via a Controlled Strategy for Signal Amplification in Water
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