Colorimetric measurement of Fe³⁺ using a functional paper-based sensor based on catalytic oxidation of gold nanoparticles

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• 作者：Jun-jie Li^a ; ¹Author Vitae ; Xian-feng Wang^a ; ¹Author Vitae ; Dan-qun Huo^a ; ^{huodq@cqu.edu.cn}Author Vitae ; Chang-jun Hou^a ; ^b ; ^{houcj@cqu.edu.cn}Author Vitae ; Huan-bao Fa^cAuthor Vitae ; Mei Yang^aAuthor Vitae ; Liang Zhang^dAuthor Vitae
• 关键词：Iron ions ; Gold nanoparticles ; Colorimetric strips ; Serum
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：1265-1271
• 全文大小：1738 K
• 卷排序：242

文摘

A new functional paper-based sensor was developed to analyze Fe3+ ions based on its capability to catalyze Au leaching from gold nanoparticles. The colorimetric sensor realized droplet detection of aqueous Fe3+ samples with good selectivity in the solid/liquid interface. The sensor showed high resistance to leaking of immobilized AuNPs in aqueous solutions as well as significant reproducibility in batch experiments. The sensor was applied to detecting Fe3+ in spiked serum samples.