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

• and morphology of LPEI@silica hybrid materials in solution [29][30]. Here we found that the surface nanostructure of LPEI@silica hybrid nanograss can also be controlled by tuning the LPEI concentrations or adding methanol for LPEI crystalline self-assembly. Figure 5 shows the SEM images of LPEI@silica

• , and a titania component into the LPEI@silica hybrid nanograss, leading to the facile creation of a functional nanosurface. This novel functionalization concept could be generally applied to other polyamine@silica hybrid materials. The silica@titania composite nanograss has been demonstrated to be a

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

• ; TPO catalytic; Introduction In recent years miniemulsions have been studied intensively [1][2][3]. Polymeric nanoparticles [1][2] from homo- or copolymers [3] as well as hybrid materials [3][4] such as magnetic [5][6][7][8] or silica/polymer nanoparticles [9][10] have been synthesized by this

• 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

• shell and were converted to silicon(oxy)carbide by pyrolysis under an inert atmosphere. The resulting hybrid materials were studied with scanning electron microscopy and elemental mapping, which verified the core–shell design of this new material. Finally, it was shown that these materials are suitable

Inorganic–organic hybrid materials through post-synthesis modification: Impact of the treatment with azides on the mesopore structure

• Miriam Keppeler,
• Jürgen Holzbock,
• Johanna Akbarzadeh,
• Herwig Peterlik and
• Nicola Hüsing

Beilstein J. Nanotechnol. 2011, 2, 486–498, doi:10.3762/bjnano.2.52

• solvent (N,N-dimethylformamide, 1,1,3,3-tetramethylurea, 1,3-dimethyl-2-imidazolidinone) or a protic solvent that can form hydrogen bonds, such as water, was used. Keywords: inorganic–organic hybrid materials; mesoporous materials; nucleophilic substitution; silica; sol–gel chemistry; Introduction

• Inorganic–organic hybrid materials with tailored porosity on several length scales are of interest for a variety of applications, such as separation, adsorption, catalysis, energy storage, etc., due to the benefits arising from each pore size regime, e.g., rapid mass transport through macropores combined

Novel acridone-modified MCM-41 type silica: Synthesis, characterization and fluorescence tuning

• Maximilian Hemgesberg,
• Gunder Dörr,
• Yvonne Schmitt,
• Andreas Seifert,
• Zhou Zhou,
• Robin Klupp Taylor,
• Sarah Bay,
• Stefan Ernst,
• Markus Gerhards,
• Thomas J. J. Müller and
• Werner R. Thiel

Beilstein J. Nanotechnol. 2011, 2, 284–292, doi:10.3762/bjnano.2.33

• -tailored sol–gel precursors prior to implementing them into the solid, thus increasing the depth of information compared to the data solely drawn from solid state measurements. Focusing on the synthesis of novel inorganic–organic hybrid materials, we also investigated new ways to produce trialkoxysilanes

• well as the textural properties of the hybrid materials were determined at 77 K by a Quantachrome Autosorb 1 sorption analyzer. Before analysis, the samples were activated at 120 °C overnight in the vacuum and then the adsorption–desorption procedure was conducted by passing nitrogen into the sample

Twofold role of calcined hydrotalcites in the degradation of methyl parathion pesticide

• Alvaro Sampieri,
• Geolar Fetter,
• María Elena Villafuerte-Castrejon,
• Adriana Tejeda-Cruz and
• Pedro Bosch

Beilstein J. Nanotechnol. 2011, 2, 99–103, doi:10.3762/bjnano.2.11

• organic anions to give hybrid materials, which have been recently studied as materials for drug delivery [22] or green pesticides [23]. As the basic properties of HTs depend on the metal composition and the M3+/(M3+ + M2+) ratio, [24][25][26], in this work we prepared HTs with different M2+ composition