Synthesis and characterization of TiO2-carbon nanocomposites with both micro- and mesopore size distributions

Abstract

Synthesis and characterization of TiO 2 -carbon nanocomposites with both micro-and mesopore size distributions, Materials Letters (2010Letters ( ), doi: 10.1016Letters ( /j.matlet.2010 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Abstract: TiO2-carbon nanocomposites were synthesized by simply mixing a TiO2 sol with a semi-cured resorcinol and formaldehyde gel, followed by drying and pyrolysis at 1000 o C in an inert atmosphere. ACCEPTED MANUSCRIPTFor comparison, the pure resorcinol and formaldehyde gel and the pure TiO2 gol were also prepared, dried and pyrolysed in same conditions, respectively. The composites with a low TiO2 content had the similar pore size distribution (PSD) and crystallographic structure to that of the blank sample (i.e., micropore size distribution), However the presence of high content TiO2 in the composites effectively resulted in an increase in mesoporosity and a crystallographic structure of dominant rutile TiO2 in the TiO2-carbon nanocomposite.

The effects of structure of POSS on the properties of POSS/PMMA hybrid materials

“…Therefore, POSS molecules are excellent fillers for preparing organic/inorganic hybrid materials with excellent interface action and without any surface modification in comparison to other inorganic nanoparticles, and for variety of architectures such as linear, pendant, branched, star‐shaped as well as network. In these hybrid materials, both inorganic and organic moieties are chemically bonded to each other and nanoscale POSS can be uniformly dispersed in the composites at molecular level to result in effective reinforcement of the thermal and mechanical properties of the materials . However, those previous researches were mostly limited to the linear or pendent polymeric systems using POSS macromers with only monofunctional corner group .…”

Twice heat-treating to synthesize TiO2/carbon composites with visible-light photocatalytic activity

“…The preparation procedure of TiO 2 sol is similar to that reported elsewhere [17], and the synthesis procedure of RF polymer is same as we have reported [16]. The synthesis of the TiO 2 /C nanocomposite is as follows.…”

“…Of those attempts, combining TiO 2 with carbonaceous materials is being increasingly investigated as a means to increase photocatalytic activity, and demonstrations of enhancement are plentiful [15]. In our previous work, we prepared the TiO 2 -carbon nanocomposites by mixing a TiO 2 sol with the semi-cured RF polymer, followed by 85 1C drying and pyrolysis in an inert atmosphere [16]. Herein, we report on a new route for the preparation of a TiO 2 /C composite by calcinating the above-mentioned TiO 2 -carbon nanocomposites in the air atmosphere at different temperature.…”