QQ客服 官方微博 反馈留言

	In-situ IR spectroscopic study of oxidation of NaH2PO2 on pt electrodes in acidic solutions
	Jiang, TX ; Jiang TX(蒋太祥) ; Wu, HH ; Wu HH(吴辉煌)
	2003
关键词	hypophosphite electrooxidation chemical plating platinum electrode SPIFTIRS
英文摘要	The mechanism of. electrochemical oxidation of hypophosphite on apolycrystalline platinum electrode was studied. by SNIFTIRS (i.e. Subtractively Normalized Interfacial FTIR Spectroscopy) as well as by cyclic voltammetry. The in-situ IR reflectance spectra were analyzed as a function of the Pt electrode potentials in 0.5 mol/L H2SO4 + 0.1 mol/L NaH2PO2 solution. The in-situ IR band characteristics are those near 2 100, 1 250 and 1 110 cm(-1), assigned as,the presence of adsorbed hydrogen atom on Pt and non-adsorbed H2PO2 molecule or phosphate species, respectively., It was, concluded that both hydrogen atoms and H2PO2 are the adsorbed species on Pt in the potential range where the. oxidation occurs, and the final. oxidation product was H,PO, rather than phosphate, different, from the Oxidation of hypophosphite on Ni electrode. Accordingly, a new mechanism was proposed for the hypophosphite oxidation on Pt electrodes in acidic media, i.e. in the potential range lower than 0.8 V (vs. SCE) the adsorbed H2PO2 was directly oxidized to phosphate via phosphite, and in the potential range higher than 0.8 V the oxygen-adsorbed species on Pt participates in the oxidation of H2PO2 into phosphate.
语种	中文
出版者	HIGHER EDUCATION PRESS
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/12099]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Jiang, TX,Jiang TX,Wu, HH,et al. In-situ IR spectroscopic study of oxidation of NaH2PO2 on pt electrodes in acidic solutions[J],2003.
APA	Jiang, TX,蒋太祥,Wu, HH,&吴辉煌.(2003).In-situ IR spectroscopic study of oxidation of NaH2PO2 on pt electrodes in acidic solutions..
MLA	Jiang, TX,et al."In-situ IR spectroscopic study of oxidation of NaH2PO2 on pt electrodes in acidic solutions".(2003).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。