期刊
ACS APPLIED MATERIALS & INTERFACES
卷 2, 期 3, 页码 684-690出版社
AMER CHEMICAL SOC
DOI: 10.1021/am900741h
关键词
silver nanoparticles; click reaction; colorimetric detection; Co2+
资金
- National Natural Science Foundation of China [20772038]
- 863 program [2009AA06A417]
- Program for Excellent Research Group of Hubei Province [2009CDA048]
- MOE [CCNU09AO200]
Bifunctionalized silver nanoparticles (triazole-carboxyl Ag NPs) were synthesized through a click reaction and have a cooperative effect on recognition of Co2+, resulting in appreciable changes in color and absorption properties over other metal, ions tested, including Fe2+, Mn2+, Hg2+, Ni2+, Cd2+, Cu2+, Zn2+, Pb2+, Li+, Na+, K+, Cs+. The functionalized silver nanoparticles became aggregated in solution in the present of Co2+ through cooperative metal-ligand interaction. The colorimetric sensor allows a rapidly quantitive assay of Co2+ down to the concentration of 7.0 x 10(-6) M. Moreover, the triazole-carboxyl AgNPs can be capable of evaluating the exceeding standard of Co2+ in drinking water.
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