Synthesis, Purification, and Electrocatalytic Activity of Platinum Nanocatalyst with Globular Dendritic Structure

	Synthesis, Purification, and Electrocatalytic Activity of Platinum Nanocatalyst with Globular Dendritic Structure
	Si Weifeng 1,2; Li Huanqiao 1; Yin Jie 1; Li Shushuang 1; Xie Yan 1; Li Jia 1; Lu Yang 1,2; Liu Yuan 1; Xing Yongheng 2; Xu Huan 2
刊名	chinese journal of catalysis
	2012-09-01
卷号	33 期号:9 页码:1601-1607
关键词	globular dendritic structure electrocatalytic activity surfactant platinum nanocatalyst oxygen reduction methanol oxidation
英文摘要	a new pt nanocatalyst was synthesized by chemical reduction of k2ptcl4 by ascorbic acid in the presence of a non-ionic surfactant brij-35 (ch3(ch2)(10)ch2(och2ch2)(23)oh) in aqueous solution at room temperature. the obtained pt nanocatalyst was characterized by transmission electron microscopy, energy-dispersive x-ray spectroscopy (edx), x-ray powder diffraction, thermogravimetry (tg), and cyclic voltammetry (cv). the uniform pt nanocatalyst possesses a globular dendritic morphology with a mean diameter of 36.9 nm. the branches of the globular dendrites are 2-4 nm in diameter and 4-6 nm in length. a simple purification method with multiple water washing was developed to remove brij-35 and other by-products from the surface of pt nanocatalyst. tg, edx, and cv results show that the surface of pt nanocatalyst after purification is as clean as that of commercial pt black (fuel cell grade, 99.9%). compared with commercial pt black, pt nanocatalyst demonstrates a higher electrochemical active surface area and significantly improved electrocatalytic activity to oxygen reduction and methanol oxidation.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	methanol fuel-cells ; bimetallic nanodendrites ; facile synthesis ; nanoparticles ; reduction ; template ; anode
收录类别	SCI
语种	英语
WOS记录号	WOS:000308972700024
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/143150]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China 2.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Si Weifeng,Li Huanqiao,Yin Jie,et al. Synthesis, Purification, and Electrocatalytic Activity of Platinum Nanocatalyst with Globular Dendritic Structure[J]. chinese journal of catalysis,2012,33(9):1601-1607.
APA	Si Weifeng.,Li Huanqiao.,Yin Jie.,Li Shushuang.,Xie Yan.,...&Song Yujiang.(2012).Synthesis, Purification, and Electrocatalytic Activity of Platinum Nanocatalyst with Globular Dendritic Structure.chinese journal of catalysis,33(9),1601-1607.
MLA	Si Weifeng,et al."Synthesis, Purification, and Electrocatalytic Activity of Platinum Nanocatalyst with Globular Dendritic Structure".chinese journal of catalysis 33.9(2012):1601-1607.