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Direct Imaging of Molecular Orbitals of Metal Phthalocyanines on Metal Surfaces with an O2-Functionalized Tip of a Scanning Tunneling Microscope

Zhihai Cheng1, Shixuan Du1, Wei Guo1, Li Gao1, Zhitao Deng1, Nan Jiang1, Haiming Guo1, Hao Tang2, and H. -J. Gao1 ()


1 Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China
2 Center for Material Elaboration and Structural Studies, B.P. 94347, 31055 Toulouse Cedex, France

DOI 10.1007/s12274-011-0108-y

Nano Res. 2011, 4(6): 523每530

Address correspondence to hjgao@iphy.ac.cn

In this paper, we report our recent investigation of the electronic states of iron phthalocyanine and zinc phthalocyanine molecules on Au(111) by low-temperature scanning tunneling microscope (STM) combined with density functional theory calculations and STM image simulations for special functionalized and normal metallic STM tips.

    

Synthesis of Large Area, Homogeneous, Single Layer Graphene Films by Annealing Amorphous Carbon on Co and Ni

Carlo M. Orofeo1, Hiroki Ago1,2(), Baoshan Hu2, and Masaharu Tsuji1,2
 
1 Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
2 Institute for Materials Chemistry and Engineering, Kyushu University, Kasuga, Fukuoka 816-8580, Japan

DOI 10.1007/s12274-011-0109-x

Nano Res. 2011, 4(6): 531每540

Address correspondence to ago@cm.kyushu-u.ac.jp

Large area, homogeneous, single layer graphene films have been synthesized from amorphous carbon over Co or Ni and the homogeneity of the graphene films has been found to independent of the rate of cooling.

    

Controlled Synthesis and Growth of Perfect Platinum Nanocubes Using a Pair of Low-Resistivity Fastened Silicon Wafers and Their Electrocatalytic Properties

Jitendra N. Tiwari1, 2 (), Rajanish N. Tiwari1, and Kunlin Lin3


1 Department of Materials Science and Engineering, Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, Taiwan 30050,China
2 Center for Superfunctional Materials, Department of Chemistry, Pohang University of Science and Technology San 31, Hyojadong, Namgu, Pohang 790-784, South Korea
3 Nano Device Laboratories No. 26, Prosperity Road I, Science-Based Industrial Park Hsinchu, Taiwan 30078, China

DOI 10.1007/s12274-011-0110-4

Nano Res. 2011, 4(6): 541每549

Address correspondence to jnt_tiw123@yahoo.co.in

We have demonstrated a new and efficient method for the synthesis and growth of well-dispersed perfect platinum nanocubes, employing a pair of low-resistivity fastened silicon (FS) wafers at 25 ∼C. The perfect Pt nanocubes deposited on the FS wafers exhibited an excellent catalytic activity and stability for methanol and ethanol oxidation.

    

Magnetite/Reduced Graphene Oxide Nanocomposites: One Step Solvothermal Synthesis and Use as a Novel Platform for Removal of Dye Pollutants

Hongmei Sun1,2, Linyuan Cao1,2, and Lehui Lu1 ()
 
1 State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
2 Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

DOI 10.1007/s12274-011-0111-3

Nano Res. 2011, 4(6): 550每562

Address correspondence to lehuilu@ciac.jl.cn

A new adsorbent for removal of dye pollutants has been prepared by a simple one step solvothermal reduction method using non-toxic and cost-effective precursors. This adsorbent combines the advantages of magnetic nanoparticles and graphene, thus providing a novel platform for dye decontamination.

    

Microbial Reduction of Graphene Oxide by Shewanella

Gongming Wang1,∫, Fang Qian1,2,∫,Chad W. Saltikov3, Yongqin Jiao2 (), and Yat Li1 ()


1 Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
2 Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
3 Department of Microbiology and Environmental Toxicology, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
These authors contributed equally to this work.

DOI 10.1007/s12274-011-0112-2

Nano Res. 2011, 4(6): 563每570

Address correspondence to Yongqin Jiao, jiao1@llnl.gov; Yat Li, yatli@ucsc.edu

We report reduction of graphene oxide to graphene in a normal aerobic setup under ambient conditions as mediated by microbial respiration of Shewanella cells.

    

Assessment of High-Frequency Performance Limits of Graphene Field-Effect Transistors

Jyotsna Chauhan and Jing Guo (
 
Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL 32611-6130, USA

DOI 10.1007/s12274-011-0113-1

Nano Res. 2011, 4(6): 571每579

Address correspondence to guoj@ufl.edu

Self-consistent quantum simulations have shown it is possible to achieve a good transconductance and ballistic on每off ratio larger than 3, even at a channel length of 20 nm, by following design guidelines for electrostatic gate control necessary to extract the full potential of graphene for ultra high speed RF applications.

    

Facile Fabrication of All-SWNT Field-Effect Transistors

Shinya Aikawa1,2, Rong Xiang1,†, Erik Einarsson1,3, Shohei Chiashi1, Junichiro Shiomi1, Eiichi Nishikawa2, and Shigeo Maruyama1 ()


1 Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2 Department of Electrical Engineering, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
3 Global Center of Excellence for Mechanical Systems Innovation, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
Current address: HKUST每SYSU Joint Laboratory of Nano Materials and Technology, State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China

DOI 10.1007/s12274-011-0114-0

Nano Res. 2011, 4(6): 580每588

Address correspondence to maruyama@photon.t.u-tokyo.ac.jp

Field-effect transistors (FETs) have been fabricated using as-grown single-walled carbon nanotubes for the channel as well as both electrodes. The resulting FETs exhibited ION/IOFF ratios exceeding 106 and a maximum ON-state current of more than 13 米A.

    

Three-Dimensional Sub-100 nm Super-Resolution Imaging of Biological Samples Using a Phase Ramp in the Objective Pupil

David Baddeley(), Mark B. Cannell, and Christian Soeller ()
 
Department of Physiology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand

DOI 10.1007/s12274-011-0115-z

Nano Res. 2011, 4(6): 589每598

Address correspondence to D. Baddeley, d.baddeley@auckland.ac.nz; C. Soeller, c.soeller@auckland.ac.nz

Phase ramp imaging localisation microscopy, introduced here, is a new three-dimensional super-resolution technique which is simple to implement and allows the nanoscale structure of biological complexes to be investigated.

    

Sodium Citrate: A Universal Reducing Agent for Reduction/Decoration of Graphene Oxide with Au Nanoparticles

Zhe Zhang1, Huihui Chen2, Chunyan Xing1, Mingyi Guo3, Fugang Xu1, Xiaodan Wang1, Hermann J. Gruber4, Bailin Zhang1, and Jilin Tang1 ()


1 State Key Laboratory of Electroanaytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
2 Department of Chemistry, Anhui University, Hefei 230039, China
3 Department of Chemistry and State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130023, China
4 Institute of Biophysics, Johannes Kepler University of Linz, 4040 Linz, Austria

DOI 10.1007/s12274-011-0116-y

Nano Res. 2011, 4(6): 599每611

Address correspondence to jltang@ciac.jl.cn

A facile method for conversion of graphene oxide (GO) to reduced graphene oxide nanosheets (RGONS) and one-pot synthesis of Au nanoparticle每reduced graphene oxide nanosheet (Au每RGONS) hybrid materials is presented, based on sodium citrate as reductant and stabilizer.

    

Synthesis and High Electrocatalytic Performance of Hexagram Shaped Gold Particles Having an Open Surface Structure with Kinks

Qingning Jiang, Zhiyuan Jiang, Lei Zhang, Haixin Lin, Ning Yang, Huan Li, Deyu Liu, Zhaoxiong Xie (), and Zhongqun Tian
 
State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China

DOI 10.1007/s12274-011-0117-x

Nano Res. 2011, 4(6): 612每622

Address correspondence to zxxie@xmu.edu.cn

Hexagram shaped gold particles and their analogues enclosed by high index facets with kinks have been successfully synthesized. The as-prepared gold particles exhibit a very high catalytic activity towards electrocatalytic oxidation of ascorbic acid due to their high density of step atoms and especially the kink atoms on the surface.

    

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