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Nucleation and Growth Mechanisms for Pd每Pt Bimetallic Nanodendrites and Their Electrocatalytic Properties

Byungkwon Lim1, Majiong Jiang2, Taekyung Yu1, Pedro H. C. Camargo1, and Younan Xia1 ()
 
1 Department of Biomedical Engineering, Washington University, St. Louis, Missouri 63130, USA
2 Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA

DOI 10.1007/s12274-010-1010-8

Nano Res (2010) 3: 69每80

Address correspondence to xia@biomed.wustl.edu

In the seed-mediated synthesis of Pd每Pt bimetallic nanodendrites, both the homogeneous and heterogeneous nucleation of Pt occurred at the very early stages of the synthesis and the growth of Pt branches mainly proceeded via particle attachment. These Pd每Pt nanodendrites showed greatly-improved activities for the oxygen reduction and formic acid oxidation reactions as compared to foam-like Pt aggregates prepared in the absence of Pd seeds.

    

Hydrazine每Cadmium Tellurite Hybrid Microcrystals: An Efficient Precursor to Porous Cadmium Telluride and Tellurium Architectures Through Its Thermal Decomposition

Hong-Bin Yao, Xiao-Bo Li, Si-Yuan Ai, and Shu-Hong Yu ()
 
Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China

DOI 10.1007/s12274-010-1011-7

Nano Res (2010) 3: 81每91

Address correspondence to shyu@ustc.edu.cn

Well-defined platelet-like hydrazine每cadmium tellurite hybrid microcrystals can be produced by a solvothermal reaction in mixed solvents. These microcrystals are an appropriate precursor for the construction of porous cadmium telluride and nanoporous tellurium architectures through combined thermal decomposition and dissolution treatment or in situ topotactic reactions.

    

Enhanced 羽每羽 Interactions Between a C60 Fullerene and a Buckle Bend on a Double-Walled Carbon Nanotube

Sandeep Gorantla1, Stanislav Avdoshenko2, Felix Börrnert1, Alicja Bachmatiuk1, Maria Dimitrakopoulou1, Franziska Schäffel1, Ronny Schönfelder1, J邦rgen Thomas1, Thomas Gemming1, Jamie H. Warner3, Gianaurelio Cuniberti2, J邦rgen Eckert1, Bernd B邦chner1, and Mark H. R邦mmeli1 ()
 
1 IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany
2 Institute for Materials Science and Max Bergmann Center of Biomaterials, Dresden University of Technology, Dresden 01062, Germany
3 Department of Materials, University of Oxford, Parks Rd., Oxford OX1 3PH, United Kingdom

DOI 10.1007/s12274-010-1012-6

Nano Res (2010) 3: 92每97

Address correspondence to m.ruemmeli@ifw-dresden.de

An in situ transmission electron microscopy observation of the dynamic entrapment of a C60 molecule in the saddle of a bent double-walled carbon nanotube is presented. The fullerene interaction is non-covalent, indicating that enhanced van der Waals forces are responsible. Classical molecular dynamics calculations confirm that the increased interaction area associated with a buckle is sufficient to trap a fullerene. Moreover, they show hopping behavior in agreement with our experimental observations.

    

Lithography-Free Fabrication of High Quality Substrate-Supported and Freestanding Graphene Devices

Wenzhong Bao1, Gang Liu1, Zeng Zhao1, Hang Zhang1, Dong Yan2, Aparna Deshpande3, Brian LeRoy3, and Chun Ning Lau1 ()
1 Department of Physics and Astronomy, University of California, Riverside, CA 92521, USA
2 Center for Nanoscale Science and Engineering, University of California, Riverside, CA 92521, USA
3 Department of Physics, University of Arizona, Tucson, AZ 85721, USA

DOI 10.1007/s12274-010-1013-5

Nano Res (2010) 3: 98每102

Address correspondence to lau@physics.ucr.edu

Lithography-free fabrication of graphene devices using shadow mask and conductance vs. gate voltage for a suspended graphene devices.

    

PEGylation of Double-Walled Carbon Nanotubes for Increasing Their Solubility in Water

Haiyu Nie1, Wei Guo1, Yuan Yuan1, Zengpei Dou1, Zujin Shi1, Zhen Liu2, Haifang Wang1,2 (), and Yuanfang Liu1,2 ()
 
1 Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
2 Institute of Nanochemistry and Nanobiology, Shanghai University, Shanghai 200444, China

DOI 10.1007/s12274-010-1014-4

Nano Res (2010) 3: 103每109

Address correspondence to Haifang Wang, hwang@shu.edu.cn; Yuanfang Liu, yliu@pku.edu.cn

Polyethylene glycol (PEG) functionalization of double-walled carbon nanotubes (DWNTs) results in a large increase in their solubility in water.

    

Crystallographically Selective Nanopatterning of Graphene on SiO2

P谷ter Nemes-Incze1 (), G芍bor Magda2, Katalin Kamar芍s3, and L芍szl車 P谷ter Bir車1
 
1 Research Institute for Technical Physics and Materials Science, PO Box 49, H-1525 Budapest, Hungary
2 Budapest University of Technology and Economics (BME), PO Box 91, H-1521 Budapest, Hungary
3 Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, PO Box 49, H-1525 Budapest, Hungary
 

DOI 10.1007/s12274-010-1015-3

Nano Res (2010) 3: 110每116

Address correspondence to nemes@mfa.kfki.hu

Graphene nanoribbon, supported on SiO2, fabricated by carbothermal etching.

    

Soluble Graphene Through Edge-Selective Functionalization

Zhengzong Sun, Shin-ichiro Kohama, Zengxing Zhang, Jay R. Lomeda, and James M. Tour ()
 
Department of Chemistry and Mechanical Engineering and Materials Science and the Smalley Institute for Nanoscale Science and Technology, Rice University, MS 222, 6100 Main Street, Houston, Texas 77005, USA
 

DOI 10.1007/s12274-010-1016-2

Nano Res (2010) 3: 117每125

Address correspondence to tour@rice.edu

Energy filtered transmission electron microscopy mapping of edge functional groups on chemically-assisted exfoliated graphene and its simulated structure.

    

Microwave Synthesis of Large Few-Layer Graphene Sheets in Aqueous Solution of Ammonia

Izabela Janowska1 (), Kambiz Chizari1, Ovidiu Ersen2, Spyridon Zafeiratos1, Driss Soubane1, Victor Da Costa2, Virginie Speisser2, Christine Boeglin2, Matthieu Houll谷1, Dominique B谷gin1, Dominique Plee3, Marc-Jacques Ledoux1, and Cuong Pham-Huu1
 
1 Laboratoire des Mat谷riaux, Surfaces et Proc谷d谷s pour la Catalyse (LMSPC), UMR7515 CNRS-Universit谷 de Strasbourg 25, rue Becquerel, 67087 Strasbourg Cedex 08, France
2 Institut de Physique et Chimie des Mat谷riaux de Strasbourg (IPCMS), UMR7504 CNRS-Universit谷 de Strasbourg 23, rue du Loess, 67037 Strasbourg Cedex 02, France
3 Arkema, Groupement de Recherche de Lacq (GRL), BP 34, 64170 LACQ, France

DOI 10.1007/s12274-010-1017-1

Nano Res (2010) 3: 126每137

Address correspondence to janowskai@unistra.fr

Mono-layer and few-layer (from bi-layer to ten layers) graphene sheets with sizes of several micrometers have been obtained by exfoliation of expanded graphite under microwave irradiation. Different transmission electron microscopy (TEM) techniques and atomic force microscope (AFM) analysis clearly showed the morphology, size, and number of the graphene sheets.

    

Radical Addition of Perfluorinated Alkyl Iodides to Multi- Layered Graphene and Single-Walled Carbon Nanotubes

Christopher E. Hamilton, Jay R. Lomeda, Zhengzong Sun, James M. Tour (), and Andrew R. Barron ()
 
Richard E. Smalley Institute for Nanoscale Science and Technology, Department of Chemistry and Department of Mechanical Engineering and Materials Science, Rice University, Houston, Texas 77005, USA

DOI 10.1007/s12274-010-1007-3

Nano Res (2010) 3: 138每145

Address correspondence to Andrew R. Barron, arb@rice.edu; James M. Tour, tour@rice.edu

The one-pot addition of perfluorododecyl (RF-DD) groups to single-walled carbon nanotubes (SWNTs) or graphite nanosheets (graphene) in 1,2-dichlorobenzene initiated by benzoyl peroxide or UV photolysis yields RF-DD-SWNTs and RF-DD-graphene, respectively.

    

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