一种新型空心镍纳米球的合成及其性能  

Synthesis and Properties of a Novel Nickel Hollow Nanosphere

作　　者：胡永红[1] 徐志花[1] 

机构地区：[1]黄冈师范学院化工学院,湖北黄冈438000

出　　处：《微纳电子技术》2011年第9期562-567,共6页Micronanoelectronic Technology

基　　金：黄冈师范学院青年科研基金(07CQ115);中国博士后特别资助项目(201003501);湖北省自然科学基金(2009CDB010)

摘　　要：以二氧化硅颗粒作为模板、金纳米颗粒作为表面晶种的方法制备了壳厚度可控的镍空心球。得到的空心镍纳米球是由似针状的面心立方的镍纳米颗粒构成的,碱溶液处理过程不影响镍纳米壳的形貌。高温处理显示镍空心球具有良好的热稳定性。研究了镍空心球电催化氧化甲醇和乙醇的活性,结果显示在碱性溶液中镍空心球是一种非常高效的甲醇和乙醇电催化氧化剂。The nickel hollow spheres with controllable shell thickness were prepared by using silica particles as templates and Au nanoparticles as surface seed crystals.The prepared nickel hollow nanospheres consist of face-centered cubic needlelike nickel nanoparticles,and the morphology of the nickel nanoshells is not changed after the treatment in alkaline solution.The high temperature treatment shows that the thermal stability of nickel hollow spheres is good.The activities of electric catalytic oxidation for methanol and ethanol with nickel hollow spheres were stu-died.The results show that the nickel hollow sphere is a very efficient electricity catalytic oxidant of methanol and ethanol in alkaline solution.

关 键 词：二氧化硅 金纳米颗粒 镍纳米颗粒 空心球 合成 

分 类 号：TB383[一般工业技术—材料科学与工程]