Silica nanoparticles are less toxic to human lung cells when deposited at the air–liquid interface compared to conventional submerged exposure

• Alicja Panas,
• Andreas Comouth,
• Harald Saathoff,
• Thomas Leisner,
• Marco Al-Rawi,
• Michael Simon,
• Gunnar Seemann,
• Olaf Dössel,
• Sonja Mülhopt,
• Hanns-Rudolf Paur,
• Susanne Fritsch-Decker,
• Carsten Weiss and
• Silvia Diabaté

Beilstein J. Nanotechnol. 2014, 5, 1590–1602, doi:10.3762/bjnano.5.171

• specific surface area is well known and has already been shown for many types of particles including amorphous silica particles [36]. Conclusion In this study two silica NPs produced by different synthesis methods were intensively characterized with regard to their properties in aerosols, deposition from

Current state of laser synthesis of metal and alloy nanoparticles as ligand-free reference materials for nano-toxicological assays

• Christoph Rehbock,
• Jurij Jakobi,
• Lisa Gamrad,
• Selina van der Meer,
• Daniela Tiedemann,
• Ulrike Taylor,
• Wilfried Kues,
• Detlef Rath and
• Stephan Barcikowski

Beilstein J. Nanotechnol. 2014, 5, 1523–1541, doi:10.3762/bjnano.5.165

• controlled independently while their uniquely high purity is retained. Hence, this article will highlight totally surfactant-free size control strategies for laser-fabricated nanoparticles and will comment on the stability of these particles in biological fluids. Additionally, laser-based synthesis methods

• . This often favors element segregation and the formation of core shell structures in the resulting nanoparticles [137][138]. Laser-based synthesis methods have proven to be a veritable alternative to generate AuAg alloy nanoparticles with homogeneous elemental distributions even on a single particle

Nanoporous composites prepared by a combination of SBA-15 with Mg–Al mixed oxides. Water vapor sorption properties

• Amaury Pérez-Verdejo,
• Alvaro Sampieri,
• Heriberto Pfeiffer,
• Mayra Ruiz-Reyes,
• Juana-Deisy Santamaría and
• Geolar Fetter

Beilstein J. Nanotechnol. 2014, 5, 1226–1234, doi:10.3762/bjnano.5.136

• 2.03 (Table 1). This value is in agreement with its nominal composition (Mg/Al = 2). The composites prepared in post-synthesis methods showed a molar ratio of Mg/Al = 1.85 and 1.95, respectively. Such ratios are very close to the nominal composition of the calcined composites. Still, the (Mg–Al)/SBA

Growth and characterization of CNT–TiO₂ heterostructures

• Yucheng Zhang,
• Ivo Utke,
• Johann Michler,
• Gabriele Ilari,
• Marta D. Rossell and
• Rolf Erni

Beilstein J. Nanotechnol. 2014, 5, 946–955, doi:10.3762/bjnano.5.108

• the recent progress achieved in these areas is reviewed here. ALD growth of CNT–TiO2 Many methods have been developed to fabricate CNT–metal/metal oxide nanocomposites. For CNT–TiO2, the methods that are mostly adopted are sol–gel and hydrothermal deposition. A good summary of the synthesis methods

Injection of ligand-free gold and silver nanoparticles into murine embryos does not impact pre-implantation development

• Ulrike Taylor,
• Wiebke Garrels,
• Annette Barchanski,
• Svea Peterson,
• Laszlo Sajti,
• Andrea Lucas-Hahn,
• Lisa Gamrad,
• Ulrich Baulain,
• Sabine Klein,
• Wilfried A. Kues,
• Stephan Barcikowski and
• Detlef Rath

Beilstein J. Nanotechnol. 2014, 5, 677–688, doi:10.3762/bjnano.5.80

• ions, which imply that their toxicity can be reduced by either adapting surface properties or choosing alternative synthesis methods, so that their use could be rendered more safely in a plethora of applications. Experimental Nanoparticle production and characterization The applied laser-based approach

Encapsulation of nanoparticles into single-crystal ZnO nanorods and microrods

• Jinzhang Liu,
• Marco Notarianni,
• Llew Rintoul and
• Nunzio Motta

Beilstein J. Nanotechnol. 2014, 5, 485–493, doi:10.3762/bjnano.5.56

• synthesis methods and applications. ZnO is a multifunctional material with semiconducting, photonic, and piezoelectric properties. Potential applications of ZnO 1D nanostructures include gas sensor [1], transistor [2], light-emitting device [3], optical waveguide [4], nanolaser [5], and piezoelectric power

Extracellular biosynthesis of gadolinium oxide (Gd₂O₃) nanoparticles, their biodistribution and bioconjugation with the chemically modified anticancer drug taxol

• Shadab Ali Khan,
• Sanjay Gambhir and
• Absar Ahmad

Beilstein J. Nanotechnol. 2014, 5, 249–257, doi:10.3762/bjnano.5.27

• responsible for the tumor killing efficiency of Gd-NCT [8]. Gd-157 not only requires shorter neutron irradiation time but also has a large neutron capture cross section area than boron-10, so that it is an ideal substitute for boron-10. As far as synthesis methods for Gd2O3 nanoparticles are concerned, the

Synthesis and catalytic applications of combined zeolitic/mesoporous materials

• Jarian Vernimmen,
• Vera Meynen and
• Pegie Cool

Beilstein J. Nanotechnol. 2011, 2, 785–801, doi:10.3762/bjnano.2.87

• section, the synthesis methods and formation mechanisms of the combined zeolitic/mesoporous materials are described. In addition, a thorough evaluation of the different synthesis strategies leading towards combined zeolitic/mesoporous materials is carried out, in which their advantages and disadvantages

• , such as nuclear track imprinting [63], but since their use is not very widespread, they will not be dealt with here. The synthesis methods can be roughly divided into three different classes, namely postsynthetic, templating and nontemplating approaches. In the postsynthetic approach, a zeolite or

• with organosilane surfactants and postsynthetic routes). All synthesis methods have their advantages and disadvantages, meaning that there is no obviously superior synthesis strategy. Therefore, the applied synthesis approach should depend on the final application, the desired properties of the

Review and outlook: from single nanoparticles to self-assembled monolayers and granular GMR sensors

• Alexander Weddemann,
• Inga Ennen,
• Anna Regtmeier,
• Camelia Albon,
• Annalena Wolff,
• Katrin Eckstädt,
• Nadine Mill,
• Michael K.-H. Peter,
• Jochen Mattay,
• Carolin Plattner,
• Norbert Sewald and
• Andreas Hütten

Beilstein J. Nanotechnol. 2010, 1, 75–93, doi:10.3762/bjnano.1.10

• mentioned in the preliminary section, bottom-up synthesis methods are well suited for these requirements. In addition, particle size distributions can be further refined via sedimentation or by magnetic separation subsequent to chemical synthesis [15]. 2.1 Driving forces to self-assemblies The organization