科研之友
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摘要
In this contribution, we have developed a rapid method for the highly selective detection of mercury ions (Hg2+) using citrate-stabilized triangular silver nanoplates (AgNPs). The calorimetric sensor strategy is based on the aggregation of Hg2+-coated AgNPs with the assistance of two amino groups of lysine, resulting in a color change of AgNP solution from blue to mauve or gray. The sensor enables the analysis of Hg2+ with a minimum detectable concentration that corresponds to 50 nM. Meanwhile, the strategy offers excellent selectivity toward Hg2+ against other cations. The validation of this method is carried out by analysis of Hg2+ in tap water with satisfying recoveries over 91.35-106%.
- 出版日期2015-12-31
- 单位首都师范大学
