Dispersible SnO2:Sb and TiO2 Nanocrystals After Calcination at High Temperature
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Open Access
Abstract
High‐temperature treatment of functional nanomaterials, through postsynthesis calcination, often represents an important step to unlock their full potential. However, such calcination steps usually severely limit the preparation of colloidal solutions of the nanoparticles due to the formation of sintered agglomerates. Herein, a simple route is reported to obtain colloidal solutions of calcined n‐conductive antimony doped tin oxide (ATO) as well as titanium dioxide (TiO2) nanoparticles without the need for additional sacrificial materials. This is achieved by making use of the reduced contact between individual nanoparticles when they are assembled into aerogels. Following the calcination of the aerogels at 500 °C, redispersion of the nanoparticles into stable colloidal solutions with various solvents can be achieved. Although a slight degree of sintering is inevitable, the size of the resulting aggregates in solution is still remarkably small with values below 30 nm.Keywords
This publication has 28 references indexed in Scilit:
- A protected annealing process for the production of high quality colloidal oxidenanoparticles with optimized physical propertiesJournal of Materials Chemistry C, 2012
- A protected annealing strategy to enhanced light emission and photostability of YAG:Ce nanoparticle-based filmsNanoscale, 2011
- Synthesis and surface control of colloidal Cr3 +-doped SnO2transparent magnetic semiconductor nanocrystalsNanotechnology, 2010
- Antimony‐Doped Tin Oxide Nanocrystals: Synthesis and Solubility Behavior in Organic SolventsChemphyschem, 2009
- Highly Active and Sinter‐Resistant Pd‐Nanoparticle Catalysts Encapsulated in SilicaSmall, 2008
- Hollow Core–Shell Mesospheres of Crystalline SnO2 Nanoparticle Aggregates for High Capacity Li+ Ion StorageChemistry of Materials, 2008
- Dopant atom distribution and spatial confinement of conduction electrons in Sb-dopednanoparticlesPhysical Review B, 2001
- Wet-Chemical Synthesis of Doped Nanoparticles: Optical Properties of Oxygen-Deficient and Antimony-Doped Colloidal SnO2The Journal of Physical Chemistry B, 2000
- YAG:Ce phosphor particles prepared by ultrasonic spray pyrolysisMaterials Research Bulletin, 2000
- Metastable Alumina Polymorphs: Crystal Structures and Transition SequencesJournal of the American Ceramic Society, 1998