Fabrication of a Novel and Simple Microcystin-LR Photoelectrochemical Sensor with High Sensitivity and Selectivity
Microcystin-LR (MC-LR), an inert electrochemical species, is difficult to be detected by a simple and direct electrochemical method. In the present work, a novel photoelectrochemical sensor is developed on highly ordered and vertically aligned TiO2 nanotubes (TiO2 NTs) with convenient surface modifi...
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| Veröffentlicht in: | Environmental science & technology 2012-11, Vol.46 (21), p.11955-11961 |
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| creator | Chen, Kang Liu, Meichuan Zhao, Guohua Shi, Huijie Fan, Lifang Zhao, Sichen |
| description | Microcystin-LR (MC-LR), an inert electrochemical species, is difficult to be detected by a simple and direct electrochemical method. In the present work, a novel photoelectrochemical sensor is developed on highly ordered and vertically aligned TiO2 nanotubes (TiO2 NTs) with convenient surface modification of molecularly imprinted polymer (MIP) (denoted as MIP@TiO2 NTs) for highly sensitive and selective determination of MC-LR in solutions. Molecularly imprinted polypyrrole (PPy) of MC-LR is chosen as the recognition element. The designed MIP@TiO2 NTs photoelectrochemical sensor presents excellent applicability in MC-LR determination, with linear range from 0.5 to 100 μg L–1 and limit of detection of 0.1 μg L–1. Moreover, the sensor exhibits outstanding selectivity while used in coexisting systems containing 2,4-dichorophenoxyacetic acid, atrazine, paraquat, or monosultap with high concentration, 100 times that of MC-LR. The sensor presents good photoelectric conversion efficiency and detection sensitivity, as well as broad linear detection range, mainly because of the high specific surface area and photoelectric activity of TiO2 NTs and the π bond delocalized electron system of PPy that promotes the separation of electron-holes. The prominent selectivity is from the MIP by forming multiple hydrogen bonds between PPy and MC-LR. Mechanisms for photoelectrochemical analysis and selective recognition are also discussed. |
| doi_str_mv | 10.1021/es302327w |
| format | Article |
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In the present work, a novel photoelectrochemical sensor is developed on highly ordered and vertically aligned TiO2 nanotubes (TiO2 NTs) with convenient surface modification of molecularly imprinted polymer (MIP) (denoted as MIP@TiO2 NTs) for highly sensitive and selective determination of MC-LR in solutions. Molecularly imprinted polypyrrole (PPy) of MC-LR is chosen as the recognition element. The designed MIP@TiO2 NTs photoelectrochemical sensor presents excellent applicability in MC-LR determination, with linear range from 0.5 to 100 μg L–1 and limit of detection of 0.1 μg L–1. Moreover, the sensor exhibits outstanding selectivity while used in coexisting systems containing 2,4-dichorophenoxyacetic acid, atrazine, paraquat, or monosultap with high concentration, 100 times that of MC-LR. The sensor presents good photoelectric conversion efficiency and detection sensitivity, as well as broad linear detection range, mainly because of the high specific surface area and photoelectric activity of TiO2 NTs and the π bond delocalized electron system of PPy that promotes the separation of electron-holes. The prominent selectivity is from the MIP by forming multiple hydrogen bonds between PPy and MC-LR. Mechanisms for photoelectrochemical analysis and selective recognition are also discussed.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es302327w</identifier><identifier>PMID: 23030666</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Analysis methods ; Applied sciences ; Bacterial Toxins - analysis ; Bacterial Toxins - chemistry ; Drinking water and swimming-pool water. Desalination ; Earth sciences ; Earth, ocean, space ; Electrochemical Techniques ; Electrons ; Engineering and environment geology. Geothermics ; Environmental Monitoring - methods ; Exact sciences and technology ; Hydrogen bonds ; Marine Toxins - analysis ; Marine Toxins - chemistry ; Microcystins - analysis ; Microcystins - chemistry ; Molecular Imprinting ; Nanostructures - chemistry ; Nanotubes ; Natural water pollution ; Photochemical Processes ; Pollution ; Pollution, environment geology ; Polymers ; Polymers - chemistry ; Pyrroles - chemistry ; Sensors ; Titanium - chemistry ; Water Pollutants, Chemical - analysis ; Water Pollutants, Chemical - chemistry ; Water treatment and pollution</subject><ispartof>Environmental science & technology, 2012-11, Vol.46 (21), p.11955-11961</ispartof><rights>Copyright © 2012 American Chemical Society</rights><rights>2014 INIST-CNRS</rights><rights>Copyright American Chemical Society Nov 6, 2012</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a373t-134335d6a6c110808d479026f26678a338972086a85b85892bb78f087489e2373</citedby><cites>FETCH-LOGICAL-a373t-134335d6a6c110808d479026f26678a338972086a85b85892bb78f087489e2373</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es302327w$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es302327w$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26631815$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23030666$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Kang</creatorcontrib><creatorcontrib>Liu, Meichuan</creatorcontrib><creatorcontrib>Zhao, Guohua</creatorcontrib><creatorcontrib>Shi, Huijie</creatorcontrib><creatorcontrib>Fan, Lifang</creatorcontrib><creatorcontrib>Zhao, Sichen</creatorcontrib><title>Fabrication of a Novel and Simple Microcystin-LR Photoelectrochemical Sensor with High Sensitivity and Selectivity</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Microcystin-LR (MC-LR), an inert electrochemical species, is difficult to be detected by a simple and direct electrochemical method. In the present work, a novel photoelectrochemical sensor is developed on highly ordered and vertically aligned TiO2 nanotubes (TiO2 NTs) with convenient surface modification of molecularly imprinted polymer (MIP) (denoted as MIP@TiO2 NTs) for highly sensitive and selective determination of MC-LR in solutions. Molecularly imprinted polypyrrole (PPy) of MC-LR is chosen as the recognition element. The designed MIP@TiO2 NTs photoelectrochemical sensor presents excellent applicability in MC-LR determination, with linear range from 0.5 to 100 μg L–1 and limit of detection of 0.1 μg L–1. Moreover, the sensor exhibits outstanding selectivity while used in coexisting systems containing 2,4-dichorophenoxyacetic acid, atrazine, paraquat, or monosultap with high concentration, 100 times that of MC-LR. The sensor presents good photoelectric conversion efficiency and detection sensitivity, as well as broad linear detection range, mainly because of the high specific surface area and photoelectric activity of TiO2 NTs and the π bond delocalized electron system of PPy that promotes the separation of electron-holes. The prominent selectivity is from the MIP by forming multiple hydrogen bonds between PPy and MC-LR. Mechanisms for photoelectrochemical analysis and selective recognition are also discussed.</description><subject>Analysis methods</subject><subject>Applied sciences</subject><subject>Bacterial Toxins - analysis</subject><subject>Bacterial Toxins - chemistry</subject><subject>Drinking water and swimming-pool water. Desalination</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Electrochemical Techniques</subject><subject>Electrons</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Environmental Monitoring - methods</subject><subject>Exact sciences and technology</subject><subject>Hydrogen bonds</subject><subject>Marine Toxins - analysis</subject><subject>Marine Toxins - chemistry</subject><subject>Microcystins - analysis</subject><subject>Microcystins - chemistry</subject><subject>Molecular Imprinting</subject><subject>Nanostructures - chemistry</subject><subject>Nanotubes</subject><subject>Natural water pollution</subject><subject>Photochemical Processes</subject><subject>Pollution</subject><subject>Pollution, environment geology</subject><subject>Polymers</subject><subject>Polymers - chemistry</subject><subject>Pyrroles - chemistry</subject><subject>Sensors</subject><subject>Titanium - chemistry</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Pollutants, Chemical - chemistry</subject><subject>Water treatment and pollution</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpl0d1LwzAQAPAgipsfD_4DEhBBH6qXpE3TRxl-wfzAKfhW0i51kbaZSbax_964zSn6dOT43eW4Q-iAwBkBSs6VY0AZTWcbqEsSClEiErKJugCERRnjrx2049w7QFAgtlEnBAac8y6yV7KwupRemxabCkt8b6aqxrId4oFuxrXCd7q0ppw7r9uo_4QfR8YbVavSh-xINaG4xgPVOmPxTPsRvtFvo0VCez3Vfr7stahYvPfQViVrp_ZXcRe9XF0-926i_sP1be-iH0mWMh8RFjOWDLnkJSEgQAzjNAPKK8p5KiRjIkspCC5FUohEZLQoUlGBSGORKRpa7KKTZd-xNR8T5XzeaFequpatMhOXExKThPEsiwM9-kPfzcS2YbovRVOImaBBnS5V2IdzVlX52OpG2nlOIP86RL4-RLCHq46TolHDtfzefADHKyBd2GBlZVtq9-MCISLMt3aydL-m-vfhJ1oomhQ</recordid><startdate>20121106</startdate><enddate>20121106</enddate><creator>Chen, Kang</creator><creator>Liu, Meichuan</creator><creator>Zhao, Guohua</creator><creator>Shi, Huijie</creator><creator>Fan, Lifang</creator><creator>Zhao, Sichen</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope><scope>7X8</scope></search><sort><creationdate>20121106</creationdate><title>Fabrication of a Novel and Simple Microcystin-LR Photoelectrochemical Sensor with High Sensitivity and Selectivity</title><author>Chen, Kang ; Liu, Meichuan ; Zhao, Guohua ; Shi, Huijie ; Fan, Lifang ; Zhao, Sichen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a373t-134335d6a6c110808d479026f26678a338972086a85b85892bb78f087489e2373</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Analysis methods</topic><topic>Applied sciences</topic><topic>Bacterial Toxins - analysis</topic><topic>Bacterial Toxins - chemistry</topic><topic>Drinking water and swimming-pool water. Desalination</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Electrochemical Techniques</topic><topic>Electrons</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Environmental Monitoring - methods</topic><topic>Exact sciences and technology</topic><topic>Hydrogen bonds</topic><topic>Marine Toxins - analysis</topic><topic>Marine Toxins - chemistry</topic><topic>Microcystins - analysis</topic><topic>Microcystins - chemistry</topic><topic>Molecular Imprinting</topic><topic>Nanostructures - chemistry</topic><topic>Nanotubes</topic><topic>Natural water pollution</topic><topic>Photochemical Processes</topic><topic>Pollution</topic><topic>Pollution, environment geology</topic><topic>Polymers</topic><topic>Polymers - chemistry</topic><topic>Pyrroles - chemistry</topic><topic>Sensors</topic><topic>Titanium - chemistry</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Pollutants, Chemical - chemistry</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Kang</creatorcontrib><creatorcontrib>Liu, Meichuan</creatorcontrib><creatorcontrib>Zhao, Guohua</creatorcontrib><creatorcontrib>Shi, Huijie</creatorcontrib><creatorcontrib>Fan, Lifang</creatorcontrib><creatorcontrib>Zhao, Sichen</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Kang</au><au>Liu, Meichuan</au><au>Zhao, Guohua</au><au>Shi, Huijie</au><au>Fan, Lifang</au><au>Zhao, Sichen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fabrication of a Novel and Simple Microcystin-LR Photoelectrochemical Sensor with High Sensitivity and Selectivity</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2012-11-06</date><risdate>2012</risdate><volume>46</volume><issue>21</issue><spage>11955</spage><epage>11961</epage><pages>11955-11961</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Microcystin-LR (MC-LR), an inert electrochemical species, is difficult to be detected by a simple and direct electrochemical method. In the present work, a novel photoelectrochemical sensor is developed on highly ordered and vertically aligned TiO2 nanotubes (TiO2 NTs) with convenient surface modification of molecularly imprinted polymer (MIP) (denoted as MIP@TiO2 NTs) for highly sensitive and selective determination of MC-LR in solutions. Molecularly imprinted polypyrrole (PPy) of MC-LR is chosen as the recognition element. The designed MIP@TiO2 NTs photoelectrochemical sensor presents excellent applicability in MC-LR determination, with linear range from 0.5 to 100 μg L–1 and limit of detection of 0.1 μg L–1. Moreover, the sensor exhibits outstanding selectivity while used in coexisting systems containing 2,4-dichorophenoxyacetic acid, atrazine, paraquat, or monosultap with high concentration, 100 times that of MC-LR. The sensor presents good photoelectric conversion efficiency and detection sensitivity, as well as broad linear detection range, mainly because of the high specific surface area and photoelectric activity of TiO2 NTs and the π bond delocalized electron system of PPy that promotes the separation of electron-holes. The prominent selectivity is from the MIP by forming multiple hydrogen bonds between PPy and MC-LR. Mechanisms for photoelectrochemical analysis and selective recognition are also discussed.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>23030666</pmid><doi>10.1021/es302327w</doi><tpages>7</tpages></addata></record> |
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| subjects | Analysis methods Applied sciences Bacterial Toxins - analysis Bacterial Toxins - chemistry Drinking water and swimming-pool water. Desalination Earth sciences Earth, ocean, space Electrochemical Techniques Electrons Engineering and environment geology. Geothermics Environmental Monitoring - methods Exact sciences and technology Hydrogen bonds Marine Toxins - analysis Marine Toxins - chemistry Microcystins - analysis Microcystins - chemistry Molecular Imprinting Nanostructures - chemistry Nanotubes Natural water pollution Photochemical Processes Pollution Pollution, environment geology Polymers Polymers - chemistry Pyrroles - chemistry Sensors Titanium - chemistry Water Pollutants, Chemical - analysis Water Pollutants, Chemical - chemistry Water treatment and pollution |
| title | Fabrication of a Novel and Simple Microcystin-LR Photoelectrochemical Sensor with High Sensitivity and Selectivity |
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