Hydrogen storage in graphene decorated with Pd and Pt nano-particles using an electroless deposition technique

被引：89

作者：

Huang, Chen-Chia ^{[1
]}

Pu, Nen-Wen ^{[2
]}

Wang, Chung-An ^{[3
]}

Huang, Jhin-Cin ^{[1
]}

Sung, Yuh ^{[4
]}

Ger, Ming-Der ^{[5
]}

机构：

[1] Natl Yunlin Univ Sci & Technol Douliu, Dept Chem & Mat Engn, Yunlin 64002, Taiwan

[2] Yuan Ze Univ, Dept Photon Engn, Tao Yuan 320, Taiwan

[3] Natl Def Univ, Chung Cheng Inst Technol, Grad Sch Def Sci, Tao Yuan 335, Taiwan

[4] Kingstate Elect Corp, Taipei 251, Taiwan

[5] Natl Def Univ, Chung Cheng Inst Technol, Dept Chem & Mat Engn, Tao Yuan 335, Taiwan

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2011年 / 82卷

关键词：

Graphene; Pt; Pd; Hydrogen storage; Hydrogen spillover; METAL-ORGANIC FRAMEWORKS; CARBON MATERIALS; CRITICAL-TEMPERATURE; ACTIVATED CARBON; GRAPHITE OXIDE; ADSORPTION; SHEETS; NANOTUBES; SPILLOVER; CAPACITY;

D O I：

10.1016/j.seppur.2011.09.020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Graphene samples prepared by the exfoliation of graphitic oxide were decorated with platinum (Pt) and palladium (Pd) by an electroless deposition technique. The obtained composites were attempted to be used as hydrogen storage materials. The composites were characterized by transmission electron microscopy (TEM), Raman spectroscopy, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The porous texture of all graphenes was analyzed using nitrogen adsorption isotherms at 77 K. The hydrogen adsorption was accurately measured by a volumetric adsorption apparatus at 303 K up to 5.7 MPa. The mesopores that originated from the space between exfoliated graphene sheets were observed by nitrogen adsorption isotherms on all graphene samples. Structure investigations reveal that specific surface areas apparently decrease after Pd or Pt decoration. The Pt and Pd nanoparticles of 2-5 nm diameter homogeneously dispersed on the exfoliated graphene sheets and voids of graphene sheets. Experimental results show that Pd or Pt decoration doubles the hydrogen capacity supporting the existence of the hydrogen spillover effect in Pd- or Pt-graphene systems. (C) 2011 Elsevier BY. All rights reserved.

引用

页码：210 / 215

页数：6

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