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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Director, State Key laboratory of Fine Chemicals
其他任职：精细化工国家重点实验室主任、国务院学科评议组成员
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：化工学院
学科：应用化学. 精细化工. 化学生物学
办公地点：大连理工大学精细化工国家重点实验室
西部校区化工实验楼F-202#
http://peng-group.dlut.edu.cn/
联系方式：大连理工大学精细化工国家重点实验室 西部校区化工实验楼F-202 辽宁省大连市高新区凌工路2号，大连116024 Tel: 0411-84986306; Fax: 0411-84986292；课题组网址：http://peng-group.dlut.edu.cn/
电子邮箱：pengxj@dlut.edu.cn
Gold nanoparticle-based nano-probe for the colorimetric sensing of Cr3+ and Cr2O72- by the coordination strategy
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论文类型：期刊论文
发表时间：2017-12-28
发表刊物：NANOSCALE
收录刊物：SCIE、EI、PubMed
卷号：9
期号：48
页面范围：19139-19144
ISSN号：2040-3364
摘要：In this work, an N-T/gold nanoparticle system was assembled for the convenient and colorimetric identification of Cr based on its coordination chemistry with the thymine derivative (N-T). In addition to the visible colorimetric changes for the qualitative Cr identification, the A(630 nm/520) (nm) values changed linearly with Cr concentration over a range of 0.5-2.5 mu M and the detection limits reached 0.03 mu M and 0.07 mu M for Cr3+ and Cr2O72-, respectively, both of which satisfied the Cr water quality standards of the U.S. EPA, WHO and China. Furthermore, a more convenient method was developed for quantitative determination of Cr concentrations in practical samples based on the Eyedropper function in Microsoft's PowerPoint software, wherein the RGB (red, green and blue) value of the sample could be easily screened in the colorimetric card for a more accurate result with good recovery, avoiding complicated instrumentation.