Biosynthesized Highly Stable Au/C Nanodots: Ideal Probes for the Selective and Sensitive Detection of Hg2+ Ions
DC Field | Value | Language |
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dc.contributor.author | Venkateswarlu, Sada | - |
dc.contributor.author | Govindaraju, Saravanan | - |
dc.contributor.author | Sangubotla, Roopkumar | - |
dc.contributor.author | Kim, Jongsung | - |
dc.contributor.author | Lee, Min-Ho | - |
dc.contributor.author | Yun, Kyusik | - |
dc.date.available | 2020-02-27T04:42:16Z | - |
dc.date.created | 2020-02-05 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.issn | 2079-4991 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1934 | - |
dc.description.abstract | The enormous ongoing industrial development has caused serious water pollution which has become a major crisis, particularly in developing countries. Among the various water pollutants, non-biodegradable heavy metal ions are the most prevalent. Thus, trace-level detection of these metal ions using a simple technique is essential. To address this issue, we have developed a fluorescent probe of Au/C nanodots (GCNDs-gold carbon nanodots) using an eco-friendly method based on an extract from waste onion leaves (Allium cepa-red onions). The leaves are rich in many flavonoids, playing a vital role in the formation of GCNDs. Transmission electron microscopy (TEM) and Scanning transmission electron microscopy-Energy-dispersive X-ray spectroscopy (STEM-EDS) elemental mapping clearly indicated that the newly synthesized materials are approximately 2 nm in size. The resulting GCNDs exhibited a strong orange fluorescence with excitation at 380 nm and emission at 610 nm. The GCNDs were applied as a fluorescent probe for the detection of Hg2+ ions. They can detect ultra-trace concentrations of Hg2+ with a detection limit of 1.3 nM. The X-ray photoelectron spectroscopy results facilitated the identification of a clear detection mechanism. We also used the new probe on a real river water sample. The newly developed sensor is highly stable with a strong fluorescent property and can be used for various applications such as in catalysis and biomedicine. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
dc.relation.isPartOf | NANOMATERIALS | - |
dc.title | Biosynthesized Highly Stable Au/C Nanodots: Ideal Probes for the Selective and Sensitive Detection of Hg2+ Ions | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000460806700114 | - |
dc.identifier.doi | 10.3390/nano9020245 | - |
dc.identifier.bibliographicCitation | NANOMATERIALS, v.9, no.2 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.scopusid | 2-s2.0-85070964288 | - |
dc.citation.title | NANOMATERIALS | - |
dc.citation.volume | 9 | - |
dc.citation.number | 2 | - |
dc.contributor.affiliatedAuthor | Venkateswarlu, Sada | - |
dc.contributor.affiliatedAuthor | Govindaraju, Saravanan | - |
dc.contributor.affiliatedAuthor | Sangubotla, Roopkumar | - |
dc.contributor.affiliatedAuthor | Kim, Jongsung | - |
dc.contributor.affiliatedAuthor | Yun, Kyusik | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | onion leaves | - |
dc.subject.keywordAuthor | GCNDs | - |
dc.subject.keywordAuthor | orange fluorescent | - |
dc.subject.keywordAuthor | TEM | - |
dc.subject.keywordAuthor | mercury ion sensor | - |
dc.subject.keywordPlus | DOTS-GOLD NANOCLUSTERS | - |
dc.subject.keywordPlus | CARBON DOTS | - |
dc.subject.keywordPlus | FLUORESCENCE SENSOR | - |
dc.subject.keywordPlus | MERCURY II | - |
dc.subject.keywordPlus | COLORIMETRIC DETECTION | - |
dc.subject.keywordPlus | GREEN SYNTHESIS | - |
dc.subject.keywordPlus | ONION EXTRACT | - |
dc.subject.keywordPlus | HG(II) IONS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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