Citation:
MA Juan, SUI Qi, LU Tianhong. Complexing Self-reduction Synthesis of Silver Nanoparticles and Their Electrocatalytic Performance[J]. Chinese Journal of Applied Chemistry,
;2014, 31(11): 1330-1335.
doi:
10.3724/SP.J.1095.2014.40040
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Pt is the best electrocatalyst for the oxygen reduction reactions(ORR).However,there are several major drawbacks,such as high cost and intolerance to the presence of intermediate species.In this paper,we use ethylene diamine tetramethylene phosphonic acid(EDTMP) as complexing-reducing agent to synthesize Ag nanoparticles.The silver nanoparticles obtained after 6 h of reduction reaction and characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM),show uniform dispersion with the particle size about 6 nm.The electrochemical tests indicated that the Ag nanoparticles exhibit superior ORR activity under alkaline conditions than that of Ag nanoparticles prepared by the conventional NaBH4 reduction.The half-wave potential(E1/2) of ORR for previous catalysis has a positive shift of 60 mV.
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