Journal
INTERNATIONAL JOURNAL OF NANOSCIENCE
Volume 19, Issue 5, Pages -Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0219581X20500040
Keywords
Colorimetric nanosensor; oxidase-like nanozyme; Hg2+ detection; Ag nanowires
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Funding
- National Natural Science Foundation of China [91963104]
- National Key Research and Development Program of China [2017YFA0207102]
- Beijing Practical Training Plan, Key Laboratory of Photochemical Conversion and Optoelectronic Materials [PCOM201908]
- Beijing Natural Science Foundation [2194074]
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A portable Hg(2+)nanosensor was developed based on the colorimetric reaction by using the unmodified Ag nanowires (Ag NWs). Ag NWs were synthesized by a solvothermal method, with the length longer than 20 mu m and the diameter of 130 similar to 150nm. The colorimetric assay can be affected by pH, temperature and the amount of Ag NWs, with the optimum parameters being 5, 4 degrees C and 100 mu L, respectively. The developed nanosensor presents excellent selectivity for Hg2+. The dynamic detection range is 25 similar to 5000 ppb, and the limit of detection (LOD) for Hg2+ is 19.9ppb. The developed Hg2+ sensor shows great potentials in environmental monitoring and onsite analysis of Hg2+.
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