Functionalization of silver nanoparticles with mPEGylated luteolin for selective visual detection of Hg2+ in water sample |
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| Authors: | Weixia Qing Mengnan Zhao Conghui Kou Minghua Lu Yong Wang |
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| Institution: | Laboratory for Nanomedicine, School of Basic Medical Science, Henan University, Kaifeng 475004 P. R. China ; Pharmaceutical College, Henan University, Kaifeng 475004 P. R. China ; College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004 P. R. China, |
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| Abstract: | A novel colorimetric sensor based on mPEGylated luteolin-functionalized silver nanoparticles (mPEGylated luteolin-AgNPs) in an aqueous solution was prepared. The mPEGylated luteolin-AgNP solution was utilized to detect Hg2+ with high sensitivity and selectivity in the presence of other metal cations including Na+, K+, Mg2+, Zn2+, Ni2+, Mn2+, Ba2+, Pb2+, Sr2+, Ca2+, Cd2+, Al3+ and Cu2+. The solution could be induced to aggregate, and a color change from yellow-brown to colorless was observed in the presence of Hg2+. Meanwhile, the sensor was successfully used to detect Hg2+ in tap water with satisfactory recovery ranges using the standard addition method.A novel colorimetric sensor for selective detection of Hg2+ based on mPEGylated luteolin functionalized silver nanoparticles was prepared. |
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