List of Issues |  4 , 2011   |  Previous Issue  |  Next Issue

       
Below >>

Morphology-Controlled Fabrication of Sulfonated Graphene/Polyaniline Nanocomposites by Liquid/Liquid Interfacial Polymerization and Investigation of Their Electrochemical Properties

Qingli Hao (), Hualan Wang, Xujie Yang, Lude Lu, and Xin Wang ()
 
Key Laboratory for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing 210094, China

DOI 10.1007/s12274-010-0087-4

Nano Res. 2011, 4(4): 323每333

Address correspondence to Qingli Hao, haoqingli@yahoo.com; Xin Wang, wangx@mail.njust.edu.cn

Morphology-controlled sulfonated graphene (SGE)/polyaniline nanocomposites have been prepared by liquid/liquid interface polymerization using SGE nanosheets as both a macromolecular acid dopant and substrate in the polymerization process, and their performance as supercapacitor electrode materials has been investigated.

    

Low Temperature Growth of SWNTs on a Nickel Catalyst by Thermal Chemical Vapor Deposition

Maoshuai He1 (), Alexander I. Chernov2, Elena D. Obraztsova2, Jani Sainio3, Emma Rikkinen1, Hua Jiang4, Zhen Zhu4, Antti Kaskela4, Albert G. Nasibulin4, Esko I. Kauppinen4, 5 (), Marita Niemelä1, and Outi Krause1

 

1 Department of Biotechnology and Chemical Technology, School of Science and Technology, Aalto University, P.O. Box 16100, FI-00076 Aalto, Finland
2 A.M. Prokhorov General Physics Institute RAS, 38 Vavilov Street, 119991 Moscow, Russia
3 Department of Applied Physics, School of Science and Technology, Aalto University, P.O. Box 11100, FI-00076 Aalto, Finland
4 Nanomaterials Group, Department of Applied Physics and Center for New Materials, School of Science and Technology, Aalto University, P.O. Box 15100, FI-00076 Aalto, Finland
5 VTT Biotechnology, P.O. Box 1000, FI-02044 Espoo, Finland

DOI 10.1007/s12274-010-0088-3

Nano Res. 2011, 4(4): 334每342

Address correspondence to Maoshuai He, maoshuai.he@hut.fi; Esko I. Kauppinen, esko.kauppinen@hut.fi

Atomic layer deposition has been used to prepare a silicasupported monometallic nickel catalyst, which facilitated the growth of high quality single-walled carbon nanotubes (SWNTs) with a narrow diameter distribution at 500 ∼C by thermal chemical vapor deposition.

    

Photoluminescence of CdSe Nanowires Grown with and without Metal Catalyst

Andrea Fasoli1, Alan Colli2, Faustino Martelli3, Simone Pisana1, Ping Heng Tan4, and Andrea C. Ferrari1 ()
 
1 Department of Engineering, University of Cambridge, Cambridge CB3 0FA, UK
2 Nokia Research Centre, Broers Building (East Forum), Cambridge CB3 0GT, UK
3 Istituto per la Microelettronica e i Microsistemi del CNR, 00133 Rome, Italy
4 SKLSM, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

DOI 10.1007/s12274-010-0089-2

Nano Res. 2011, 4(4): 343每359

Address correspondence to acf26@eng.cam.ac.uk

CdSe nanowires have been synthesized via vapor-phase growth with and without the use of a metal catalyst. Nanowires produced without a catalyst can be optimized to yield higher quantum efficiency, and narrower and spatially uniform emission, when compared to the catalyst-assisted ones.

    

Enhanced Photocatalytic Activity of TiO2 Nanofibers and Their Flexible Composite Films: Decomposition of Organic Dyes and Efficient H2 Generation from Ethanol每Water Mixtures

Ming-Chung Wu1, 4, Andr芍s S芍pi2, Anna Avila3, M芍ria Szab車2, Jussi Hiltunen3, Mika Huuhtanen3, G谷za T車th1, Ákos Kukovecz2, Zolt芍n K車nya2, Riitta Keiski3, Wei-Fang Su4, Heli Jantunen1, and Kriszti芍n Kord芍s1 ()


1 Department of Electrical and Information Engineering, University of Oulu, P.O. Box 4500, FI-90014 University of Oulu, Finland
2 Department of Applied and Environmental Chemistry, University of Szeged, 6720 Szeged, Rerrich B谷la t谷r 1, Hungary
3 Department of Process and Environmental Engineering, P.O. Box 4300, FI-90014 University of Oulu, Finland
4 Department of Materials Science and Engineering, Taiwan University, Taipei 106-17, Taiwan, China

DOI 10.1007/s12274-010-0090-9

Nano Res. 2011, 4(4): 360每369

Address correspondence to lapy@ee.oulu.fi

By employing metal-decorated TiO2 nanowires, efficient photocatalytic decomposition of organic dyes in water on the surface of flexible freestanding cellulose/catalyst composite films, as well as hydrogen generation from ethanol, is enabled.

    

Fe3O4 Octahedral Colloidal Crystals

L-r Meng1, Weimeng Chen2, Yiwei Tan1, Lin Zou1, Chinping Chen2, Heping Zhou1, Qing Peng1, and Yadong Li1 ()
 
1 State Key Laboratory of New Ceramics and Fine Processing, Department of Chemistry and Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2 Department of Physics, Peking University, Beijing 100871, China

DOI 10.1007/s12274-010-0091-8

Nano Res. 2011, 4(4): 370每375

Address correspondence to ydli@tsinghua.edu.cn

Multimicron-sized Fe3O4 colloidal "single crystals" with an octahedral shape have been readily produced by a controllable solvothermal method. They may serve as a novel magnetic mesoporous material, as well as a high-capacity electrode material for lithium-ion batteries.

    

Formation of Extended Covalently Bonded Ni Porphyrin Networks on the Au(111) Surface

Sergey A. Krasnikov1, 2 (), Catherine M. Doyle1, Natalia N. Sergeeva3, Alexei B. Preobrajenski4, Nikolay A. Vinogradov4, Yulia N. Sergeeva3, Alexei A. Zakharov4, Mathias O. Senge3, and Attilio A. Cafolla1


1 School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland
2 Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), School of Physics, Trinity College Dublin, Dublin 2, Ireland
3 SFI Tetrapyrrole Laboratory, School of Chemistry, Trinity College Dublin, Dublin 2, Ireland
4 MAX-Lab, Lund University, Box 118, 22100 Lund, Sweden

DOI 10.1007/s12274-010-0092-7

Nano Res. 2011, 4(4): 376每384

Address correspondence to krasniks@tcd.ie

Thermally controlled dissociation of bromine from {5,10,15,20-tetrakis(4-bromophenyl)porphyrinato}nickel(II) has been employed to form robust, extended covalently bonded porphyrin networks on the Au(111) surface, which are stable up to 800 K and can be recovered after exposure to ambient conditions. Covalent bonds are formed between the phenyl substituents of the porphyrins when the molecular layer is annealed at 525 K.

    

Massless and Massive Particle-in-a-Box States in Single- and Bi-Layer Graphene

Sungjae Cho and Michael Fuhrer ()
 
Department of Physics and Center for Nanophysics and Advanced Materials, University of Maryland, College Park, Maryland 20742, USA 

DOI 10.1007/s12274-011-0093-1

Nano Res. 2011, 4(4): 385每392

Address correspondence to mfuhrer@umd.edu

We probe the density of particle-in-a-box states as a function of particle number for massless two-dimensional (2-D) fermions (single-layer graphene) and massive 2-D fermions (bi-layer graphene) in a phase-coherent Fabry每Perot cavity for electrons. The density of states varies as the square-root of particle number for massless 2-D fermions, and is constant for massive 2-D fermions.

    

Effects of Gamma Irradiation for Sterilization on Aqueous Dispersions of Length Sorted Carbon Nanotubes

Jeffrey A. Fagan1 (), Nancy J. Lin1, Rolf Zeisler2, and Angela R. Hight Walker3


1 Polymers Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
2 Analytical Chemistry Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
3 Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA

DOI 10.1007/s12274-011-0094-0

Nano Res. 2011, 4(4): 393每404

Address correspondence to Jeffrey.fagan@nist.gov

Gamma ray irradiation of nanotube dispersions is demonstrated to sterilize the liquids while allowing retention of the desirable optical properties of the nanotubes.

    

In Vivo Toxicity Assessment of Gold Nanoparticles in Drosophila Melanogaster

Pier Paolo Pompa1 (), Giuseppe Vecchio1, Antonio Galeone1, Virgilio Brunetti1, Stefania Sabella1, Gabriele Maiorano1, Andrea Falqui2, Giovanni Bertoni2, and Roberto Cingolani1,2
 
1 Italian Institute of Technology, Center for Bio-Molecular Nanotechnology, Via Barsanti, 1每73010 Arnesano (Lecce), Italy
2 Italian Institute of Technology, Central Research Laboratories, Via Morego, 30每16136 Genova, Italy

DOI 10.1007/s12274-011-0095-z

Nano Res. 2011, 4(4): 405每413

Address correspondence to pierpaolo.pompa@iit.it

The model system Drosophila melanogaster has been exploited to assess the toxic effects of citrate-capped gold nanoparticles (AuNPs) upon ingestion. We observed a significant in vivo toxicity of AuNPs, which elicited clear adverse effects in treated organisms, such as a strong reduction of their life span and fertility, presence of DNA fragmentation, as well as a significant overexpression of the stress proteins.

    

Block Copolymer-Templated BiFeO3 Nanoarchitectures Composed of Phase-Pure Crystallites Intermingled with a Continuous Mesoporosity: Effective Visible-Light Photocatalysts?

Christian Reitz, Christian Suchomski, Christoph Weidmann, and Torsten Brezesinski ()


Institute of Physical Chemistry, Justus-Liebig-University Giessen, Giessen 35392, Germany

DOI 10.1007/s12274-011-0096-y

Nano Res. 2011, 4(4): 414每424

Address correspondence to torsten.brezesinski@phys.chemie.uni-giessen.de

BiFeO3 can be templated using a large poly(ethylene-co-butylene)-block-poly(ethylene oxide) diblock copolymer to produce high quality thin films with both a mesoporous morphology and nanocrystalline framework. These novel materials exhibit enhanced photocatalytic activity compared to nontemplated films, which demonstrates that the catalytic properties are largely determined by surfaces and interfaces and not by bulk behavior.

    

Copyright Nano Research   |   Contact Us