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dc.contributor.authorZeng, Y
dc.contributor.author曾跃
dc.contributor.authorYu, SC
dc.contributor.author于尚慈
dc.contributor.authorLi, ZL
dc.contributor.author李则林
dc.contributor.authorZhou, SM
dc.contributor.author周绍民
dc.date.accessioned2012-06-16T06:57:59Z
dc.date.available2012-06-16T06:57:59Z
dc.date.issued2000
dc.identifier.citationCHINESE JOURNAL OF CHEMISTRY,2000,18(5):703-709zh_CN
dc.identifier.issn1001-604X
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/12792
dc.description.abstractThe reduction and the oxidation of hypophosphite on a Ni-Ag electrode have been studied to provide the information about the phosphorus incorporation mechanisms during the electroless deposition and the electrodeposition of Ni-P alloys. In the electrooxidation process, an absorbency band around 240 nn, which was ascribed to the formation of an intermediate (PHO2-)-P-., was observed by in situ UV-Vis subtractive reflectance spectroscopy. Accordingly, the electrooxidation of hypophosphite might undergo an H abstraction of hypophosphite from the PH bond to form the phosphorus-centred radical (PHO2-)-P-., which was subsequently electrooxidized to the final product, phosphite. In the reduction process Ni-phosphine compound Ni-(PH3)(n) was observed by irt situ surface Raman spectroscopy. The results from the Raman experiments show that, in the NiSO4-free solution, hypophosphite was reduced only to Ni-phosphine compound, while in the case where NiSO4 coexisted in the solutions, the Ni-phosphine compound, as an intermediate, was oxidised by Ni2+ to elemental phosphorus in alloys with nickel acting as the catalyst.zh_CN
dc.language.isozhzh_CN
dc.publisherSCIENCE PRESSzh_CN
dc.subjectin situ Raman spectroscopyzh_CN
dc.subjectin situ UV-Vis spectroscopyzh_CN
dc.subjecthypophosphitezh_CN
dc.subjectelectrooxidationzh_CN
dc.subjectelectroreductionzh_CN
dc.subjectmechanismzh_CN
dc.titleAnodic and cathodic process of hypophosphite on a Ni-Ag electrodezh_CN
dc.typeArticlezh_CN


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