Ferromagnetic behaviour of Fe-doped ZnO nanograined films

• Boris B. Straumal,
• Svetlana G. Protasova,
• Andrei A. Mazilkin,
• Thomas Tietze,
• Eberhard Goering,
• Gisela Schütz,
• Petr B. Straumal and
• Brigitte Baretzky

Beilstein J. Nanotechnol. 2013, 4, 361–369, doi:10.3762/bjnano.4.42

• deposited onto (102) single-crystalline sapphire substrates. Drying at 100 °C in air for about 30 min was followed by thermal pyrolysis in an electrical furnace in air at 550 °C. The Zn and Fe content in doped oxides was measured by atomic absorption spectroscopy in a Perkin-Elmer spectrometer and electron

• ][52][54][55][58][64] or nanopowders [24][29][32][41][42][46][53][56][59][65][66], or for films obtained by sol–gel method, pyrolysis, CVD or PLD [22][23][25][27][28][45]. If the samples mentioned in the analysed papers were not poreless, such as in the partly sintered powders (open and filled diamonds

Near-field effects and energy transfer in hybrid metal-oxide nanostructures

• Ulrich Herr,
• Barat Achinuq,
• Cahit Benel,
• Giorgos Papageorgiou,
• Manuel Goncalves,
• Johannes Boneberg,
• Paul Leiderer,
• Paul Ziemann,
• Peter Marek and
• Horst Hahn

Beilstein J. Nanotechnol. 2013, 4, 306–317, doi:10.3762/bjnano.4.34

• . [16] on Eu-doped TiO2 nanoparticles with comparable Eu3+ concentration obtained by a plasma-pyrolysis synthesis route. The excitation spectrum of the TiO2:Eu nanoparticles is shown in Figure 4. The emission intensity at 617 nm was recorded and shows several maxima for excitation at around 400 nm as

Functionalization of vertically aligned carbon nanotubes

• Eloise Van Hooijdonk,
• Carla Bittencourt,
• Rony Snyders and
• Jean-François Colomer

Beilstein J. Nanotechnol. 2013, 4, 129–152, doi:10.3762/bjnano.4.14

• involving a single synthesis step and those requiring double step synthesis. The single-step synthesis is based on the pyrolysis of organometallic precursors such as metallocenes [29][30]; this method was called “floating catalyst CVD” because it does not require the preparation of catalyst particles

• pyrolysis of iron(II) phthalocyanine (FePc) under Ar/H2 atmosphere at 800–1100 °C, which leads to the growth of vertically aligned carbon nanotubes in the plasma-patterned polymer-free regions. The highly cross-linked structure of the plasma-patterned polymer films guarantees the integrity of the polymer

• fibers was solved by Feng et al. who made well-aligned MWCNTs/PANI hybrid materials. The methodology is the following: (i) VA-CNTs are grown on a quartz substrate by catalytic pyrolysis, (ii) the film is immersed in an aniline/HCl solution (0 °C, 12 h), (iii) polymerization on the CNTs surfaces. The

Reduced electron recombination of dye-sensitized solar cells based on TiO₂ spheres consisting of ultrathin nanosheets with [001] facet exposed

• Hongxia Wang,
• Meinan Liu,
• Cheng Yan and
• John Bell

Beilstein J. Nanotechnol. 2012, 3, 378–387, doi:10.3762/bjnano.3.44

• thoroughly washed with detergent water, distilled water, acetone, isopropanol and ethanol in sequence under sonication for 15 min. The cleaned FTO substrate was first coated with a compact layer of TiO2 film by spray pyrolysis to reduce the electron back reaction at the interface between the bare FTO and the

Template-assisted formation of microsized nanocrystalline CeO₂ tubes and their catalytic performance in the carboxylation of methanol

• Jörg J. Schneider,
• Meike Naumann,
• Christian Schäfer,
• Armin Brandner,
• Heiko J. Hofmann and
• Peter Claus

Beilstein J. Nanotechnol. 2011, 2, 776–784, doi:10.3762/bjnano.2.86

• polymer-templating method was investigated in an effort to reduce such agglomeration [1][7][8][9][10][11]. Nanosized ceria can be synthesized by methods such as chemical vapour deposition (CVD), spray pyrolysis, hydrothermal synthesis or electrosynthesis [1][2][9]. These approaches lead to particulate

Approaches to nanostructure control and functionalizations of polymer@silica hybrid nanograss generated by biomimetic silica mineralization on a self-assembled polyamine layer

• Jian-Jun Yuan and
• Ren-Hua Jin

Beilstein J. Nanotechnol. 2011, 2, 760–773, doi:10.3762/bjnano.2.84

• [8][9][10][11]. On the other hand, silica films consisted of a network of interwoven nanofibers were also reported as produced by flame spray pyrolysis of organometallic solutions with the deposition and annealing temperature of silica in the range from 500 to 800 °C [12]. However, these conventional

Formation of SiC nanoparticles in an atmospheric microwave plasma

• Martin Vennekamp,
• Ingolf Bauer,
• Matthias Groh,
• Evgeni Sperling,
• Susanne Ueberlein,
• Maksym Myndyk,
• Gerrit Mäder and
• Stefan Kaskel

Beilstein J. Nanotechnol. 2011, 2, 665–673, doi:10.3762/bjnano.2.71

• industrial process. But, SiC nanoparticles also exhibit properties different from the bulk material and allow the creation of composite materials with new properties. Thus, their production has been studied by different methods such as the thermal pyrolysis of organic precursors [3][4][5], or plasma

• atmospheric plasma [18][19]. However, the established industrial production processes for nanoparticles, such as flame pyrolysis yielding millions of tons of carbon black or oxide nanoparticles per year, are performed at atmospheric pressure. The plasma synthesis of nanoparticles in atmospheric plasma offers

Ceria/silicon carbide core–shell materials prepared by miniemulsion technique

• Lars Borchardt,
• Martin Oschatz,
• Robert Frind,
• Emanuel Kockrick,
• Martin R. Lohe,
• Christoph P. Hauser,
• Clemens K. Weiss,
• Katharina Landfester,
• Bernd Büchner and
• Stefan Kaskel

Beilstein J. Nanotechnol. 2011, 2, 638–644, doi:10.3762/bjnano.2.67

• methacrylate (MMA) or acrylic acid. Furthermore the prevalent problem of sphere sintering during pyrolysis has been overcome by means of a coating procedure. In this contribution, we describe the functionalization of SiC spheres with ceria shells. Ceria is known as an oxidation catalyst for soot combustion

• CTAB or Lutensol AT50 (Figure 3). The green PCS spheres exhibited a low specific surface area of ~9 m2.g−1. Functionalization and pyrolysis The dispersion of PCS spheres can be destabilized either by adding acetone, by the evaporation of water at 353 K overnight, or by centrifugation. Subsequently, the

• resulting PCS spheres are either pyrolyzed instantaneously or functionalized before pyrolysis. The latter results in a core–shell-structured hybrid material. A promising method for the synthesis of core–shell hybrid materials in general was described by Landfester et al. [36]. They created surface

Studies towards synthesis, evolution and alignment characteristics of dense, millimeter long multiwalled carbon nanotube arrays

• Pitamber Mahanandia,
• Jörg J. Schneider,
• Martin Engel,
• Bernd Stühn,
• Somanahalli V. Subramanyam and
• Karuna Kar Nanda

Beilstein J. Nanotechnol. 2011, 2, 293–301, doi:10.3762/bjnano.2.34

• and length 70 cm, closed at one end [53][54][55]. The other end of the quartz tube was connected to a rubber bladder to collect the exhaust gases. The precursors were vaporized inside a horizontal furnace and heated to the desired pyrolysis temperature (range 650–1100 °C) at a rate of 20 °C/min. When

Aerosol assisted fabrication of two dimensional ZnO island arrays and honeycomb patterns with identical lattice structures

• Mitsuhiro Numata and
• Yoshihiro Koide

Beilstein J. Nanotechnol. 2010, 1, 71–74, doi:10.3762/bjnano.1.9

• monolayer on SiO2/Si substrates. Subsequent pyrolysis converts the precursor to crystalline TiO2 with concomitant removal of the polystyrene. The resulting TiO2 seed pattern was then used to direct ZnO nanocrystals growth in a one-pot solution process [2][9][26][27]. In addition, this type of laminated