The synthesis of Ag@CQDs composite and its electrochemiluminescence application for the highly selective and sensitive detection of chloride
Carbon quantumdots (CQDs) decorated Ag nanoparticles (Ag@CQDs) were successfully synthesized and characterized by UV-Vis spectroscopy,fluorescence,FT-IR,and transmission electron microscopy (TEM),then utilized for the sensitive detection of chloride ions (Cl-).Compared to CQDs,the Ag@CQDs showed stronger electrochemiluminescence (ECL) in 0.1 M PBS (pH = 7.4) containing 0.1 M K2S2O8.In the presence of chloride (Cl-),a significant reduction in the ECL intensity of Ag@CQDs was noticed,which was used to develop a sensitive detection method of Cl-.The ECL quenching of Ag@CQDs was utilized to establish the method,of which the mechanism might be caused by the formation of AgCl on the Ag@CQDs composite surface.The prepared Cl- sensor showed a wide linear range (0.99-450 nM) and low detection limit (0.33 nM).Furthermore,the prepared sensor exhibited high sensitivity and good selectivity towards several ion inferences.
Electrochemiluminescence Carbon nanodots Ag@CQDs composite Chloride ion detection
Yi-Yang Lu Nian-Lu Li Li-Ping Jia Rong-Na Ma Wen-Li Jia Xu-Qian Tao Hui Cui Huai-Sheng Wang
Department of Chemistry,Liaocheng University,Liaocheng,Shandong 252059,China
国际会议
南京
英文
114-119
2016-12-23（万方平台首次上网日期，不代表论文的发表时间）