Biomass-derived Carbon Quantum Dots for Visible-Light-Induced Photocatalysis and Label-Free Detection of Fe(III) and Ascorbic acid
- Authors
- Das, Gouri Sankar; Shim, Jong Pil; Bhatnagar, Amit; Tripathi, Kumud Malika; Kim, TaeYoung
- Issue Date
- 21-Oct-2019
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- SCIENTIFIC REPORTS, v.9
- Journal Title
- SCIENTIFIC REPORTS
- Volume
- 9
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/903
- DOI
- 10.1038/s41598-019-49266-y
- ISSN
- 2045-2322
- Abstract
- Visible-light-driven photocatalysts prepared using renewable resources are crucial but challenging to develop for the efficient degradation of organic pollutants, which is required to solve ever-increasing water deterioration issues. In this study, we report a visible-light-responsive photocatalyst for the efficient degradation of methylene blue (MB) as a model pollutant dye. Green-emissive carbon quantum dots (CQDs) were synthesized from pear juice via a facile, scalable, one-pot solvothermal process. The as-synthesized CQDs exhibit superior photocatalytic activity under visible-light irradiation owing to their efficient light absorption, electron transfer, and separation of photogenerated charge carriers, facilitating similar to 99.5% degradation of MB within 130 min. A possible mechanism for the photocatalysis is proposed on the basis of comprehensive active species trapping experiments. Furthermore, the CQDs were used in a specific sensitive assay for Fe(III) and ascorbic acid (AA), even with interference from other metal ions. The fluorescence emission of CQDs was "turned off" specifically upon binding of Fe(III) and "turned on" with AA. The prepared CQDs represent efficient photocatalysts and fluorescent probes that are not restricted by toxicity, cost, or lack of scalability.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
- 산업·환경대학원 > 산업환경공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/903)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.