Preparation of Diphenylcarbazide-Directed CdSe Quantum Dots and Selective Determination for Cr(VI)

被引：3
作者：
Shi Yan [1 ,2 ]
Sun Ken [1 ]
机构：
[1] North China Univ Water Resources & Elect Power, Sch Environm & Municipal Engn, Zhengzhou 450045, Peoples R China
[2] CAAS, Farmland Irrigat Res Inst, Xinxiang 453002, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2016年 / 31卷 / 05期
关键词：
Cr(VI); CdSe; quantum dots; fluorescence; linear relationship; FLUORESCENCE PROBE; QDS; TEMPERATURE; PROTEIN; SAMPLES; CD(II); CU(II); GROWTH; SENSOR;
D O I：
10.1007/s11595-016-1477-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
CdSe quantum dots (QDs) were synthesized using diphenylcarbazide (DL) to sequester QDs precursors (Cd2+) in situ. Fluorescence (FL) analysis showed the successive synthesis of QDs could be realized by capping with DL and the binding between DL and Cd2+. The average QDs particle size was about 5-20 nm by high-resolution transmission electron microscopy (HRTEM). Fourier transform infrared (FT-IR) spectra showed that CdSe QDs could be chemically bonded with DL. The formation of QDs-DL-Cr(VI) could lower the fluorescence intensity of QDs. In a certain concentration range, the fluorescence intensity and Cr(VI) concentration presented a linear relationship. As a result, this phenomenon could be used to determine the Cr(VI) concentration in the range of 0-24 x10(-6) mol.L-1.
引用
收藏
页码：972 / 976
页数：5
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