PtPd nanodendrites supported on graphene nanosheets: A peroxidase-like catalyst for colorimetric detection of H2O2

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	PtPd nanodendrites supported on graphene nanosheets: A peroxidase-like catalyst for colorimetric detection of H2O2
	Chen, Xiaomei ; Su, Bingyuan ; Cai, Zhixiong ; Chen, Xi ; Oyama, Munetaka ; Chen X(陈曦)
刊名	http://dx.doi.org/10.1016/j.snb.2014.04.067
关键词	HYDROGEN-PEROXIDE GLUCOSE DETECTION PLATINUM NANOPARTICLES METHANOL OXIDATION CARBON NANOTUBES FILM ELECTRODE GROWTH
英文摘要	Japan Society for the Promotion of Science (JSPS) for the fellowship; National Natural Science Foundation of China [21305050]; Special Foundation for Young Researchers of the Health Department of Fujian [2013-2-106]; Scientific Research Foundation of the Education Department of Fujian [FB2013006]; JSPS KAKENHI [24.02335, 24550100]; Well-dispersed PtPd nanodendrites on graphene nanosheets (PtPdNDs/GNs) were synthesized by a simple and green method with the reduction of ethanol. The morphology, structure and composition of the thus-prepared PtPdNDs/GNs were characterized by transmission electron microscopy (TEM), high resolution TEM, energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. Furthermore, the peroxidase-like catalytic ability of PtPdNDs/GNs was studied and it is interesting that the PtPdNDs/GNs can efficiently catalyze the classical peroxidase substrate 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). By comparing with mono Pt nanoflowers (NFs)/GNs, Pd nanoparticles (NPs)/GNs, bimetallic PtPd nanoalloys (NAs)/GNs and core-shell Pd@PtNFs/GNs, the PtPdNDs/GNs showed a stronger affinity for TMB with a lower Michaelis-Menten constant (Km) value at an optimum pH of 4.4. Take the advantage of the high catalytic activity, the as-prepared PtPdNDs/GNs was used to develop a novel colorimetric sensor for H2O2 with fast response, wide linear range (0.5-150 mu M) and low detection limit (0.1 mu M). The rapid, simple and sensitive TMB-H2O2-PtPdND5/GN5 sensing platform shows great promising applications in the pharmaceutical, clinical and industrial detection of H2O2. (C) 2014 Elsevier B.V. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE SA
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89228]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Chen, Xiaomei,Su, Bingyuan,Cai, Zhixiong,et al. PtPd nanodendrites supported on graphene nanosheets: A peroxidase-like catalyst for colorimetric detection of H2O2[J]. http://dx.doi.org/10.1016/j.snb.2014.04.067.
APA	Chen, Xiaomei,Su, Bingyuan,Cai, Zhixiong,Chen, Xi,Oyama, Munetaka,&陈曦.
MLA	Chen, Xiaomei,et al."PtPd nanodendrites supported on graphene nanosheets: A peroxidase-like catalyst for colorimetric detection of H2O2".http://dx.doi.org/10.1016/j.snb.2014.04.067