National Taiwan Ocean University Institutional Repository:Item 987654321/38467
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 27314/39158
Visitors : 2473444      Online Users : 95
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38467

Title: Synthesis of photoluminescent carbon dots for the detection of cobalt ions
Authors: Chi-Lin Li;Chih-Ching Huang;Arun Prakash Periasamy;Prathik Roy;Wei-Cheng Wu;Chia-Lun Hsua;Huan-Tsung Chang
Contributors: 國立臺灣海洋大學:生命科學暨生物科技學系
Date: 2015
Issue Date: 2016-09-07T02:02:51Z
Publisher: RSC Advances
Abstract: Abstract: We have developed a simple assay for the sensing of cobalt ions (Co2+), based on the analyte induced photoluminescence (PL) quenching of carbon dots (C-dots). The C-dots (mean diameter 3.6 ± 0.3 nm) prepared from L-cysteine through a simple hydrothermal process at 300 °C for 2 h have a quantum yield of 13.2%. The C-dots have strong blue PL with a maximum PL intensity at 395 nm under an excitation wavelength of 325 nm. Through the reactions of Co2+ ions with cysteine molecules/residues on the surfaces of the C-dots, non-photoluminescent CoxSy nanoparticles are formed. As-formed CoxSy nanoparticles and the C-dots further form aggregates in the solution, leading to PL quenching. The C-dot probe allows detection of Co2+ ions over a concentration range from 10 nM to 100 μM (R2 = 0.992). This reliable, rapid, sensitive, and selective C-dot probe has been utilized for the determination of the concentrations of Co2+ ions in vitamin B12 and natural water samples.
Relation: 3
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/38467
Appears in Collections:[Department of Life Science] Periodical Articles

Files in This Item:

File Description SizeFormat
index.html0KbHTML90View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback