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Title: Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr{sup 3+} ions

Abstract

Graphical abstract: Biosynthesized fluorescent ZnO quantum dots are extremely stable and are able to sense up to 2 nM of Cr3+ ions in aqueous solution. - Highlights: • ZnO quantum dotes (QDs) are rapidly synthesized from the bio waste at room temperature. • The capping and reducing agent is from natural source hence biodegradable. • The water soluble fluorescent ZnO quantum dots are highly stable. • The QDs are able to sense 2 nM of Cr{sup 3+} ions in aqueous solution. - Abstract: Synthesis of extremely stable and water soluble quantum dots (QDs) would be smart if the method is rapid and eco-friendly. Here in, we have employed a simple strategy for the preparation of well dispersed, luminescent ZnO quantum dots by using pomegranate peel extract at room temperature. This method excludes the use of strong commercial stabilizing agents, different pH conditions, higher temperature and inert atmosphere during the synthesis. The microscopic study has revealed the ZnO QDs to be of a narrow size with an average size distribution of about 4 nm. The water soluble QDs exhibited a strong emission peak at 490 nm and were stable for twelve months. The emission from ZnO QDs are selectively quenched uponmore » addition of Cr{sup 3+} ions. The interaction between the Cr{sup 3+} and the biomolecules on the exterior of ZnO QDs, enables the system to detect up to 2 nM Cr{sup 3+} ions in aqueous solution.« less

Authors:
;  [1]
  1. Department of Physics, Nallamuthu Gounder Mahalingam College, Pollachi 642001, TN (India)
Publication Date:
OSTI Identifier:
22730445
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 95; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AQUEOUS SOLUTIONS; BIOSYNTHESIS; CHROMIUM IONS; DETECTION; FLUORESCENCE; INERT ATMOSPHERE; QUANTUM DOTS; REDUCING AGENTS; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; ZINC OXIDES

Citation Formats

Kaviya, S., E-mail: kaviyahere@gmail.com, Kabila, S., and Jayasree, K. V. Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr{sup 3+} ions. United States: N. p., 2017. Web. doi:10.1016/J.MATERRESBULL.2017.07.025.
Kaviya, S., E-mail: kaviyahere@gmail.com, Kabila, S., & Jayasree, K. V. Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr{sup 3+} ions. United States. doi:10.1016/J.MATERRESBULL.2017.07.025.
Kaviya, S., E-mail: kaviyahere@gmail.com, Kabila, S., and Jayasree, K. V. Wed . "Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr{sup 3+} ions". United States. doi:10.1016/J.MATERRESBULL.2017.07.025.
@article{osti_22730445,
title = {Room temperature biosynthesis of greatly stable fluorescent ZnO quantum dots for the selective detection of Cr{sup 3+} ions},
author = {Kaviya, S., E-mail: kaviyahere@gmail.com and Kabila, S. and Jayasree, K. V.},
abstractNote = {Graphical abstract: Biosynthesized fluorescent ZnO quantum dots are extremely stable and are able to sense up to 2 nM of Cr3+ ions in aqueous solution. - Highlights: • ZnO quantum dotes (QDs) are rapidly synthesized from the bio waste at room temperature. • The capping and reducing agent is from natural source hence biodegradable. • The water soluble fluorescent ZnO quantum dots are highly stable. • The QDs are able to sense 2 nM of Cr{sup 3+} ions in aqueous solution. - Abstract: Synthesis of extremely stable and water soluble quantum dots (QDs) would be smart if the method is rapid and eco-friendly. Here in, we have employed a simple strategy for the preparation of well dispersed, luminescent ZnO quantum dots by using pomegranate peel extract at room temperature. This method excludes the use of strong commercial stabilizing agents, different pH conditions, higher temperature and inert atmosphere during the synthesis. The microscopic study has revealed the ZnO QDs to be of a narrow size with an average size distribution of about 4 nm. The water soluble QDs exhibited a strong emission peak at 490 nm and were stable for twelve months. The emission from ZnO QDs are selectively quenched upon addition of Cr{sup 3+} ions. The interaction between the Cr{sup 3+} and the biomolecules on the exterior of ZnO QDs, enables the system to detect up to 2 nM Cr{sup 3+} ions in aqueous solution.},
doi = {10.1016/J.MATERRESBULL.2017.07.025},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 95,
place = {United States},
year = {2017},
month = {11}
}