乙酰胺-尿素-NaBr熔体中Eu-Ni合金的电化学制备  

Elcctrode Position of Eu-Ni Alloy Film in Acctamide Urea NaBr Melt

作　　者：王金贵[1] 王建朝[1] 李才让[1] 

机构地区：[1]青海师范大学化学系,青海西宁810008

出　　处：《青海师范大学学报（自然科学版）》2007年第3期54-57,共4页Journal of Qinghai Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50264004)

摘　　要：利用循环伏安法,研究在353K的乙酰胺-尿素-NaBr熔体中,Ni(Ⅱ)一步不可逆还原为金属Ni,Eu(Ⅲ)不能单独还原为Eu,但可以被Ni(Ⅱ)诱导而共沉积.由恒电位电解法得到Eu-Ni合金,Eu的含量随阴极电位的负移,Eu(Ⅲ)/Ni(Ⅱ)摩尔比增大及电解时间延长而增大.Electroreduction of Ni^2＋ to Ni in acctamide-urca NaBr meal at 353K is irreversible in one step. Eu^3＋ is not reduced to Eu alone, but can be inductively Nideposited with Ni^2- . The amorphous Eu - Ni alloy films were obtained by potent biostatic electrolysis. The Nintene of Eu in the Eu - Ni deposits changes with the cathode potential. Molar ratio of Eu^3＋/Ni^2＋ and the electrolysis time. Crystalline ally is obtained after heat trcatment of the deposit.

关 键 词：乙酰胺-尿素-NABR熔体 电还原 诱导共沉积 Eu-Ni合金膜 稀土 

分 类 号：O641.4[理学—物理化学]