碱性溶液中次亚磷酸根离子在铂和镍电极上氧化的比较  

Comparison of Oxidation of Hypophosphite on Platinum and Nickel Electrodes in Alkaline Media

作　　者：蒋太祥[1] 吴辉煌[1] 

机构地区：[1]厦门大学化学化工学院固体表面物理化学国家重点实验室,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2003年第3期336-339,共4页Journal of Xiamen University：Natural Science

基　　金：国家自然科学基金(20073035)资助

摘　　要：用SNIFTIRS和循环伏安法研究0.1mol/LNaOH溶液中次亚磷酸根离子在铂和镍两种电极上的电氧化行为.结果表明次亚磷酸根离子在两种金属上的氧化明显不同,在Ni上氧化产物是HPO3-,在Pt上电位较负时氧化产物是PO32-,而电位较正时产物是PO43-.讨论了在两种金属上次亚磷酸根离子氧化反应的差别和相应的可能机理.The electrochemical oxidation of hypophosphite ions in 0.1 mol/L NaOH media on polycrystalline platinum and nickel electrodes was studied by SNIFTIRS (Subtractively Normalized Interfacial FTIR Spectroscopy ) as well as by cyclic voltammetry. It was concluded that hypophosphite oxidation on platinum is in a different way from that on nickel . PO32-at less positive potentials or PO43-at more positive potentials was detected as oxidation product on Pt , while HPO3-as oxidation product on Ni.The differences of hypophosphite oxidation on two metals were disscused and the corresponding reaction mechanism was proposed.

关 键 词：碱性溶液 次亚磷酸根离子 铂电极 镍电极 电氧化 氧化反应 氧化产物 化学镀 

分 类 号：TQ153[化学工程—电化学工业] O646.54[理学—物理化学]