Ni/α-PbO_2/β-PbO_2薄膜的电化学制备及电氧化4-甲基吡啶的性能  

Electrochemical preparation of Ni/α-PbO_2/β-PbO_2 films and their performance in electro-oxidation of 4-methylpyridine

作　　者：邵玉田[1] 周颖华[1] 岑树琼[1] 楼莹[1] 李鹏[1] 李则林[1] 牛振江[1] 

机构地区：[1]浙江师范大学物理化学研究所浙江省固体表面反应化学重点实验室,浙江金华321004

出　　处：《现代化工》2007年第S2期314-317,319,共5页Modern Chemical Industry

基　　金：浙江省自然科学基金资助课题(Y404028)

摘　　要：在304型不锈钢基底上,依次电沉积Ni、α-PbO2和β-PbO2制备Ni/α-PbO2/β-PbO2多层薄膜。分析了沉积层的结构、形貌及电氧化4-甲基吡啶的性能。结果表明活性β-PbO2层的晶粒织构、表面形貌和电氧化性能都随不同中间层而改变。当Ni、α-PbO2和β-PbO2层的厚度分别为3、30、10μm时,显示最好的电氧化4-甲基吡啶性能,此时活性β-PbO2层呈(200)晶面择优和多棱角的多孔形貌。The Ni/α-PbO2/β-PbO2 muliti-layer films have been prepared by electrodepositing Ni,α-PbO2 and β-PbO2 successively with 304 type stainless steel as a substrate.The structures,morphologies and activities for electro-oxidation of 4-methylpyridine in 1.0 mol/L H2SO4 of the films were investigated.The results showed that the texture preferred orientation,morphologies and electro-oxidation performance of the β-PbO2 depended on the types of the substrates.The Ni/α-PbO2/β-PbO2 film with the best performance of electro-oxidation 4-methylpyridine was obtained,which is made of 3 μm Ni、30 μm α-PbO2 and 10 μm β-PbO2.And the best active β-PbO2 showed the texture with(200) face preferred orientation and ridge porous feature.

关 键 词：电沉积 Ni/α-PbO2/β-PbO2 电氧化 4-甲基吡啶 

分 类 号：O611.3[理学—无机化学] O647.31[理学—化学]