Preparation of Ag nanoparticle-decorated poly(m-phenylenediamine) microparticles and their application for hydrogen peroxide detection
2011; Royal Society of Chemistry; Volume: 136; Issue: 9 Linguagem: Inglês
10.1039/c0an00929f
ISSN1364-5528
AutoresJingqi Tian, Hailong Li, Wenbo Lu, Yonglan Luo, Lei Wang, Xuping Sun,
Tópico(s)Analytical Chemistry and Sensors
ResumoThe chemical oxidation polymerization of m-phenylenediamine (MPD) by ammonium persulfate (APS) at room temperature results in the formation of poly(m-phenylenediamine) (PMPD) microparticles. The subsequent treatment of such microparticles with an aqueous AgNO3 solution produces Ag nanoparticle (AgNP)-decorated PMPD microparticles. It was found that as-formed AgNPs exhibited remarkable catalytic performance toward the reduction of hydrogen peroxide (H2O2). The enzymeless H2O2 sensor constructed with such composites showed a fast amperometric response time of less than 5 s, and the corresponding linear range and detection limit were estimated to be from 0.1 to 30 mM and 4.7 µM, respectively, at a signal-to-noise ratio of 3.
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