Dual-emissive nanohybrid of carbon dots and gold nanoclusters for sensitive determination of mercuric ions
Dual-emissive nanohybrid of carbon dots and gold nanoclusters for sensitive determination of mercuric ions
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碳点和金纳米团簇的双发射纳米杂化物用于灵敏测定汞离子
DOI:
10.1007/s12274-016-1099-5
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发表时间:
2016-05
期刊:
影响因子:
9.9
通讯作者:
Suhua Wang
中科院分区:
文献类型:
--
作者:
Yehan Yan;Huan Yu;Kui Zhang;Mingtai Sun;Yajiao Zhang;Xiangke Wang;Suhua Wang
The present work reports a sensitive and selective fluorescent sensor for the detection of mercury ion, Hg(II), by hybridizing carbon nanodots (C-dots) and gold nanoclusters (Au NCs) through intrinsic interactions of the two components. The C-dots serve as the reference signal and the Au NCs as the reporter. This method employs the specific high affinity metallophilic Hg2+–Au+interactions which can greatly quench the red fluorescence of Au NCs, while the blue fluorescence of C-dots is stable against Hg(II), leading to distinct ratiometric fluorescence changes when exposed to Hg(II). A limit of detection of 28 nM for Hg(II) in aqueous solution was estimated. Thus we applied the sensor for the detection of Hg(II) in real water samples including tap water, lake water and mineral water samples with good results. We further demonstrated that a visual chemical sensor could be manufactured by immobilizing the nanohybrid probe on a cellulose acetate circular filter paper. The paper-based sensor immediately showed a distinct fluorescence color evolution from pink to blue after exposure to a drop of the Hg(II) solution.
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影响因子:
3.4
作者:
C. Wan;Chih-Shyue Chen;Shiuh-Jen Jiang
通讯作者:
C. Wan;Chih-Shyue Chen;Shiuh-Jen Jiang
影响因子:
7.4
作者:
Liu, Dingbin;Qu, Weisi;Jiang, Xingyu
通讯作者:
Jiang, Xingyu
影响因子:
4.9
作者:
Hsu, Pin-Che;Chang, Huan-Tsung
通讯作者:
Chang, Huan-Tsung
影响因子:
6.7
作者:
Shang, Li;Yang, Linxiao;Nienhaus, G. Ulrich
通讯作者:
Nienhaus, G. Ulrich
影响因子:
6.1
作者:
R. A. Soomro;A. Nafady;Sirajuddin;Najma Memon;Tufail H. Sherazi;N. H. Kalwar
通讯作者:
R. A. Soomro;A. Nafady;Sirajuddin;Najma Memon;Tufail H. Sherazi;N. H. Kalwar