Photo catalytic oxidation of TNT using TiO2-SiO2 nano-composite aerogel catalyst prepared using sol–gel process

Ingale, S. V.; Wagh, P. B.; Tripathi, A. K.; Dudwadkar, Ayushi; Gamre, Sunita; Rao, P. Mohan; Singh, I. K.; Gupta, Satish C.

doi:10.1007/s10971-011-2445-4

Cited by 31 publications

(10 citation statements)

References 26 publications

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“…6b, have been assigned to the titania. This is in agreement with our earlier results (presence of anatase phase of TiO 2 in the composite) on selected area electron diffraction pattern of TiO 2 eSiO 2 gels [9]. TEM of TiO 2 eSiO 2 (65/35) aerogel revealed presence of some irregularly sized, larger TiO 2 particles along with uniformly distributed smaller size nano-crystallites (Fig.…”

Section: Resultssupporting

confidence: 93%

“…The crystalline phase of TiO 2 could be assigned to anatase structure [15]. It was observed in our earlier studies [9] that the particle size of TiO 2 is reduced with increasing content of TiO 2 in the titaniaesilica composite. The similar trend was maintained for still higher concentration of TiO 2 .…”

Section: Characterizationmentioning

confidence: 70%

“…This is likely to enhance the specific surface area required for effective catalysis. Recently we demonstrated that TiO 2 /SiO 2 aerogels, containing 20 wt% and 50 wt% TiO 2 , can be used for photo oxidation of TNT in which it was found that TiO 2 content and high specific surface area of composite aerogel significantly modifies over-all the photo oxidation efficiency [9]. The results from these experiments emphasized that it would be essential to study the effect of amount of TiO 2 on the microstructure of TiO 2 / SiO 2 aerogel that affects the optical and catalytic performance of TiO 2 /SiO 2 composite aerogels.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and micro structural investigations of titania–silica nano composite aerogels

Ingale¹,

Sastry²,

Wagh³

et al. 2012

Materials Chemistry and Physics

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Section: Resultssupporting

confidence: 93%

Section: Characterizationmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and micro structural investigations of titania–silica nano composite aerogels

Ingale¹,

Sastry²,

Wagh³

et al. 2012

Materials Chemistry and Physics

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“…Titanium was introduced into nanoporous silicas during or after the synthesis [ 12 , 84 – 88 ]. Titania–silica hybrids with a wider Si/Ti ratio have also been prepared by various approaches to provide thin films [ 89 – 93 ] and powders [ 94 – 98 ].…”

Section: Synthesis Of Oxide-based Well-defined Particlesmentioning

confidence: 99%

Oxide-based inorganic/organic and nanoporous spherical particles: synthesis and functional properties

Shiba

Tagaya

Tilley

et al. 2013

Science and Technology of Advanced Materials

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This paper reviews the recent progress in the preparation of oxide-based and heteroatom-doped particles. Surfactant-templated oxide particles, e.g. silica and titania, are possible candidates for various potential applications such as adsorbents, photocatalysts, and optoelectronic and biological materials. We highlight nanoporous oxides of one element, such as silicon or titanium, and those containing multiple elements, which exhibit properties that are not achieved with individual components. Although the multicomponent nanoporous oxides possess a number of attractive functions, the origin of their properties is hard to determine due to compositional/structural complexity. Particles with a well-defined size and shape are keys for a quantitative and detailed discussion on the unique complex properties of the particles. From this viewpoint, we review the synthesis techniques of the oxide particles, which are functionalized with organic molecules or doped with heteroatoms, the physicochemical properties of the particles and the possibilities for their photofunctional applications as complex systems.

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“…Some semiconductor particles will yield electron‐hole pairs when irradiated by specific wavelengths . Most organic substances, including dyestuff, red wine and coffee , react with these active species generating carbon dioxide and water. However, the safety of nanoparticles has attracted considerable attention .…”

Section: Introductionmentioning

confidence: 99%

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

Zheng

Zhou

et al. 2018

Coloration Technology

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Titanium dioxide (TiO2) dispersions were obtained by neutralising anatase nano‐titanium dioxide sols prepared by hydrolysing tetrabutyl titanate in acidic aqueous media. Pyrite was initially prepared via the microwave‐assisted method with a mixed solvent of ethylene glycol and small amounts of water, and was then used in sensitising micron‐sized titanium dioxide particles to obtain aramid fabrics with self‐cleaning properties. X‐ray diffraction demonstrated the crystalline structure of pyrite, and ultraviolet‐visible (UV‐vis) spectrum and energy‐dispersive X‐ray spectroscopy characterised the band gaps, surface status on fabrics and the distribution of the pyrite compound's titanium dioxide particles. The contact angle, UV protection factor (UPF) and photocatalytic degradation of methylene blue (MB) were used to evaluate the performance of treated aramid fabrics. Results show that pyrite‐sensitised titanium dioxide compounds obtained at pH 5 have smaller band gap energies and relatively poor wetting abilities, higher UPF values, and perform well in the photocatalytic degradation of MB. The pseudo‐first kinetic model was used to analyse elaborate sections of the curve for the degradation of MB.

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Photo catalytic oxidation of TNT using TiO2-SiO2 nano-composite aerogel catalyst prepared using sol–gel process

Cited by 31 publications

References 26 publications

Synthesis and micro structural investigations of titania–silica nano composite aerogels

Synthesis and micro structural investigations of titania–silica nano composite aerogels

Oxide-based inorganic/organic and nanoporous spherical particles: synthesis and functional properties

Microwave‐assisted preparation of pyrite and its sensitisation of titanium dioxide in self‐cleaning aramid fabrics

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