Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김기현 | - |
dc.date.accessioned | 2020-10-07T00:33:07Z | - |
dc.date.available | 2020-10-07T00:33:07Z | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | JOURNAL OF MOLECULAR LIQUIDS, v. 292, article no. 111455 | en_US |
dc.identifier.issn | 0167-7322 | - |
dc.identifier.issn | 1873-3166 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S0167732219333835?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/154413 | - |
dc.description.abstract | Advances in technology are driving the population toward portable devices and inexpensive sensors. Although a massive volume of water is accessible across the globe, there are problems with access to potable water. Quality checks ensure timely management of several aquatic contaminants. This research article reports a novel electrochemical technique for direct determination of uranyl ions in water samples based on copper oxide (CuO) quantum dots (QDs: size range 5-10 nm). The QDs were synthesized by a chemical precipitation method and were obtained in monoclinic phase of pure CuO with highly crystalline nature. The band gap of the synthesized CuO quantum dots was found to be 2.6 eV. These CuO QDs were coated on gold (Au) surfaces to fabricate CuO/Nafion/Au electrodes. Nanoengineering of CuO QDs was further explored to produce efficient electro-catalysts for direct redox sensing of uranyl ions (U6+). Cyclic voltammetry (CV) procedures were optimized and standardized for qualitative and quantitative determination of uranyl ions in water samples. The fabricated sensing electrode displayed a high sensitivity of 130 mu A cm(-2) ppm(-1) with a limit of detection at 0.009 ppm (linear range: 0.01 to 0.1 ppm), which is below the maximum permissible limit (i.e. 0.03 ppm). The fabricated electrode was responsible for sole conversion of U4+ into U6+ with a corresponding oxidation peak. (C) 2019 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | GB thanks the University Grants Commission (UGC), Govt. of India for financial support in the form of a Dr. D. S. Kothari Post Doc. Fellowship (Reference No. F.4-2/2006 (BSR)/EN/18-19/0005). SK thanks the Department of Biotechnology (DBT), Government of India (award BT/PR18868/BCE/8/1370/2016 Dated 31-01-2018), and DST-PURSE (Promotion of University Research and Scientific Excellence) via GJUS&T, Hisar, under the PURSE program SR/PURSE Phase 2/40(G). GRC would like to acknowledge the support of UGC, India, under the INDO-US 21st Century Knowledge Initiative project (F.No.194-2/2016(IC)). KHK acknowledges support in part by a grant from the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (No. 2016R1E1A1 A01940995). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE BV | en_US |
dc.subject | Uranyl | en_US |
dc.subject | Quantum dots | en_US |
dc.subject | Sensor | en_US |
dc.subject | Electrochemical | en_US |
dc.subject | Nanomaterial | en_US |
dc.title | Direct Redox Sensing of Uranium using Copper Oxide Quantum Dots. | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1016/j.molliq.2019.111455 | - |
dc.relation.page | 1-8 | - |
dc.relation.journal | JOURNAL OF MOLECULAR LIQUIDS | - |
dc.contributor.googleauthor | Bhanjana, Gaurav | - |
dc.contributor.googleauthor | Toor, Inderpreet | - |
dc.contributor.googleauthor | Chaudhary, Ganga Ram | - |
dc.contributor.googleauthor | Dilbaghi, Neeraj | - |
dc.contributor.googleauthor | Kim, Ki-Hyun | - |
dc.contributor.googleauthor | Kumar, Sandeep | - |
dc.relation.code | 2019001062 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING | - |
dc.identifier.pid | kkim61 | - |
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