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dc.contributor.author林晓东
dc.contributor.author陈杜宏
dc.contributor.author田中群
dc.contributor.authorLIN Xiao-dong
dc.contributor.authorCHEN Du-hong
dc.contributor.authorTIAN Zhong-qun
dc.date.accessioned2017-01-03T07:58:45Z
dc.date.available2017-01-03T07:58:45Z
dc.date.issued2016-12-28
dc.identifier.citation电化学,2016,22(6):570-576.
dc.identifier.issn1006-3471
dc.identifier.urihttp://dx.doi.org/10.13208/j.electrochem.160569
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/127487
dc.description.abstract在本课题组研究55 nm Au@Pd@Pt对甲酸电催化效果基础上,我们采用Ag取代Au制备55 nm Ag@Pd@Pt纳米粒子以降低催化剂的成本,并对甲酸的电催化行为进行研究. 研究表明:少量Pt的存在可大幅度提高催化剂的活性,当Pt的覆盖度为0.5 单原子层(ML)时,起始氧化电位最为靠前,氧化峰电流最大,这与Au@Pd@Pt纳米粒子对甲酸电催化行为类似. 与Au@Pd@Pt纳米粒子相比,其最佳起始氧化电位偏正0.05 V,但电催化活性并没有明显的降低. 通过改变催化剂比表面积研究甲酸的电催化行为,发现将9 nm Ag纳米粒子作为内核的9 nm Ag@Pd@Pt负载在活性炭中,在保持催化活性不变的情况下,碳载的催化剂价格可比55 nm Au@Pd@Pt纳米粒子降低220倍左右.
dc.description.abstractIn an effort to lower cost of a catalyst, the silver (Ag) core with palladium (Pd) layer then platinum (Pt) island (Ag@Pd@Pt) nanoparticles were synthesized and the electrocatalytic activity of Ag@Pd@Pt nanoparticles on formic acid was compared with that of Au@Pd@Pt nanoparticles reported previously. The results showed that the existence of a small amount of Pt could significantly improve the activity of the catalyst. When the surface coverage of Pt approached 0.5 monolayers, the activity of Ag@Pd@Pt nanoparticles reached the maximum. Though the onset potential of the electro-oxidation was slightly more positive (about 50 mV), the overall electrocatalytic activity of Ag@Pd@Pt nanoparticles was similar to that of the Au@Pd@Pt nanoparticles. The relationship between the changing specific surface area and the electrocatalytic activity behavior of Ag@Pd@Pt nanoparticles in formic acid was also studied. The price of Ag@Pd@Pt nanoparticles with Ag core of 9 nm supported by activated carbon was ~ 220 times lower than that of 55 nm Au@Pd@Pt nanoparticles based on the similar electocatalytic activity being obtained.
dc.description.sponsorship国家自然科学基金项目(No. 2011YQ030124)资助
dc.language.isozh
dc.publisher厦门大学《电化学》编辑部
dc.relation.ispartofseries界面电化学近期研究专辑(厦门大学 毛秉伟教授)
dc.relation.ispartofseriesSpecial Issue on Interfacial Electrochemistry(Guest Editor: Professor Dr. Bingwei Mao)
dc.source.urihttp://electrochem.xmu.edu.cn/CN/abstract/abstract10319.shtml
dc.subjectAg@Pd@Pt
dc.subject可调控的壳层厚度
dc.subject甲酸电催化氧化
dc.subjectAu@Pd@Pt nanoparticles
dc.subjecttunable shell thickness
dc.subjectelectrocatalytic oxidation of formic acid
dc.title壳层厚度可调控的Ag@Pd@Pt纳米粒子的合成和甲酸电催化研究
dc.title.alternativeSyntheses of Ag@Pd@Pt Nanoparticles with Tunable Shell Thickness for Electrochemical Oxidation of Formic Acid
dc.typeArticle
dc.description.note作者联系地址:厦门大学固体表面物理化学国家重点实验室,能源材料化学协同创新中心,化学与化工学院化学系,福建 厦门 361005
dc.description.noteAuthor's Address: State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
dc.description.note通讯作者E-mail:zqtian@xmu. edu. cn


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