DC Field | Value | Language |
---|---|---|
dc.contributor.author | Singh, Vijay K. | ko |
dc.contributor.author | Mishra, Himanshu | ko |
dc.contributor.author | Ali, Rashid | ko |
dc.contributor.author | Umrao, Sima | ko |
dc.contributor.author | Srivastava, Rajesh | ko |
dc.contributor.author | Abraham, Shiju | ko |
dc.contributor.author | Misra, Arvind | ko |
dc.contributor.author | Singh, Vidya Nand | ko |
dc.contributor.author | Mishra, Hirdyesh | ko |
dc.contributor.author | Tiwari, R. S. | ko |
dc.contributor.author | Srivastava, Anchal | ko |
dc.date.accessioned | 2019-05-02T02:10:07Z | - |
dc.date.available | 2019-05-02T02:10:07Z | - |
dc.date.created | 2019-04-29 | - |
dc.date.created | 2019-04-29 | - |
dc.date.created | 2019-04-29 | - |
dc.date.issued | 2019-01 | - |
dc.identifier.citation | ACS APPLIED NANO MATERIALS, v.2, no.1, pp.566 - 576 | - |
dc.identifier.issn | 2574-0970 | - |
dc.identifier.uri | http://hdl.handle.net/10203/261696 | - |
dc.description.abstract | Most of the reports suggest that liquid exfoliated WS2-QDs are unstable; therefore the need of present day is to develop a novel synthesis route for producing long-term stable WS2-QDs. Herein, we report a bottom-up single-step hydrothermal growth of in situ functionalized blue fluorescent WS2-QDs with stable fluorescence in aqueous media without subsequent treatments. Presence of various functional groups over the surface of f-WS2-QDs provides high solubility and stability to f-WS2-QDs in aqueous media preserving its fluorescence. Further, photoluminescence property of f-WS2-QDs has been employed to devise an optical sensor with a high sensitivity (K-D similar to 10(4) M-1) and selectivity for ferric (Fe3+) ions. Under the optimal condition, response of the sensor is found to be linear in the range of 0-55 mu M with a limit of detection (LOD) of 1.32 mu M, which is within the maximum permissible level of Fe3+ (similar to 5.4 mu M) in human drinking water by the USEPA. Further, we have also carried out a detailed evaluation on fluorescence quenching kinetics of f-WS2-QDs. Nonlinear behavior of S-V plot and TRPL measurements suggest that quenching is a mixed phenomenon of dynamic as well as static processes. Finally we have proposed a mechanism for fluorescence quenching of f-WS2-QDs in the presence of Fe3+. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | In Situ Functionalized Fluorescent WS2-QDs as Sensitive and Selective Probe for Fe3+ and a Detailed Study of Its Fluorescence Quenching | - |
dc.type | Article | - |
dc.identifier.wosid | 000464491500061 | - |
dc.identifier.scopusid | 2-s2.0-85068598680 | - |
dc.type.rims | ART | - |
dc.citation.volume | 2 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 566 | - |
dc.citation.endingpage | 576 | - |
dc.citation.publicationname | ACS APPLIED NANO MATERIALS | - |
dc.identifier.doi | 10.1021/acsanm.8b02162 | - |
dc.contributor.localauthor | Umrao, Sima | - |
dc.contributor.nonIdAuthor | Singh, Vijay K. | - |
dc.contributor.nonIdAuthor | Mishra, Himanshu | - |
dc.contributor.nonIdAuthor | Ali, Rashid | - |
dc.contributor.nonIdAuthor | Srivastava, Rajesh | - |
dc.contributor.nonIdAuthor | Abraham, Shiju | - |
dc.contributor.nonIdAuthor | Misra, Arvind | - |
dc.contributor.nonIdAuthor | Singh, Vidya Nand | - |
dc.contributor.nonIdAuthor | Mishra, Hirdyesh | - |
dc.contributor.nonIdAuthor | Tiwari, R. S. | - |
dc.contributor.nonIdAuthor | Srivastava, Anchal | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | WS2 | - |
dc.subject.keywordAuthor | quantum dots | - |
dc.subject.keywordAuthor | hydrothermal synthesis | - |
dc.subject.keywordAuthor | quantum yield | - |
dc.subject.keywordAuthor | TRPL | - |
dc.subject.keywordAuthor | fluorescence quenching | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE SENSING PLATFORM | - |
dc.subject.keywordPlus | GRAPHENE QUANTUM DOTS | - |
dc.subject.keywordPlus | CARBON DOTS | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | WS2 | - |
dc.subject.keywordPlus | FACILE | - |
dc.subject.keywordPlus | EXFOLIATION | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | NITROGEN | - |
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