Amphoteric surfactant promoted three-dimensional assembly of graphene micro/nanoclusters to accomodate Pt nanoparticles for methanol oxidation Original Research Article Electrochimica Acta, Available online 3 February 2015, Pages Zonghua Wang, Guoyu Shi, Feifei Zhang, Jianfei Xia, Rijun Gui, Min Yang, Sai Bi, Lin Xia, Yanhui Li, Linhua Xia, Yanzhi Xia
Graphical abstractAn intelligent amphoteric surfactant (sodium lauryl aminopropionate) was introduced to the construction of Pt/3D graphene micro/nanocomposite. The results show that a higher-order assembly of 3D porous graphene-based architectures from stacked graphene oxide layers can be easily achieved which can be ascribed to the unique pH induced charge transition and micellar arranging property of the amphoteric surfactant. In particular, the dispersion of Pt NPs is more uniform and the particle size is much smaller in Pt/3D graphene than in traditional Pt/graphene. The as-made catalyst Pt/3D graphene exhibits remarkably enhanced electrocatalytic activity towards methanol oxidation.

| Spillover enhanced hydrogen storage in Pt-doped MOF/graphene oxide composite produced via an impregnation method Inorganic Chemistry Communications, Available online 3 February 2015, Pages Hu Zhou, Jun Zhang, Jian Zhang, Xiu-Fen Yan, Xiao-Ping Shen, Ai-Hua Yuan
Graphical abstractPt-doped MOF/graphene oxide (GO) composites were prepared via an incipient-wetness impregnation method for the first time. The significantly enhanced hydrogen uptakes at 298K for composites compared to pristine-MOFs can be attributed to the spillover mechanism, where Pt nanoparticles and MOF/GO act as dissociation source and receptor, respectively.
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