Preparation of silver-modified TiO2 via microwave-assisted method and its photocatalytic activity for toluene degradation

Li, Xiaobin; Wang, Linling; Lü, Xiaohua

doi:10.1016/j.jhazmat.2009.12.080

Cited by 97 publications

(36 citation statements)

References 40 publications

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“…The photocatalytic activity of the films consisting of anatase, brookite, rutile and silver nanoparticles exceeded that of an anatase film. High activity for the photodegradation of gaseous toluene was also exhibited by Ag-TiO 2 three-phasic powders synthesized from titanium butoxide and AgNO 3 using a microwave-assisted method [199]. The enhanced efficiency of the Ag-TiO 2 multiphase samples was attributed to the presence of many heterojunctions among the different TiO 2 phases and Ag.…”

Section: Doped and Loaded Mixtures Of Brookite With Anatase And/or Rumentioning

confidence: 92%

Brookite, the Least Known TiO2 Photocatalyst

2013

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Abstract:Brookite is the least studied TiO 2 photocatalyst due to the difficulties usually encountered in order to obtain it as a pure phase. In this review, a comprehensive survey of the different methods available for preparing brookite powders and films is reported. Attention has been paid both to the most traditional methods, such as hydrothermal processes at high temperatures and pressures, and to environmentally benign syntheses using water soluble compounds and water as the solvent. Papers reporting the photocatalytic activity of pure and brookite-based samples have been reviewed.

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Section: Doped and Loaded Mixtures Of Brookite With Anatase And/or Rumentioning

confidence: 92%

Brookite, the Least Known TiO2 Photocatalyst

2013

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“…Similar studies were carried out by Peiro et al (2001), but the TiO 2 anatase film was deposited on glass substrates and silicon wafers. Li et al (2010) prepared silvermodified TiO 2 via a microwave-assisted method. All papers presented the process of TiO 2 preparation and/or deposition on film during the microwave treatment.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted TiO2: anatase formation on cotton and viscose fabric surfaces

et al. 2016

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The method of TiO 2 -anatase film preparation on cotton and viscose fabric surfaces using the sol-gel process and microwave treatment is presented. Microwave treatment was used to change the amorphous TiO 2 form to anatase directly on the fabrics. The influence of microwave treatment conditions on the obtainable polymorphic form of TiO 2 was examined. Fabrics were pretreated with low-temperature air plasma (30 min). The root mean square height in the selected area increased from 44 to 166 nm (cotton) and from 9 to 112 nm (viscose). Infrared analysis showed the new band at 1748 and 1732 cm -1 corresponding to C=O stretching for plasma-treated cotton and viscose textiles, respectively. The plasma pretreatment also improved the wetting properties by TiO 2 sol and increased the surface free energy of fabrics. TiO 2 film thickness was 180 nm (12 %wg. Ti) and 140 nm (3 %wg. Ti) for cotton and viscose, respectively. TiO 2 -modified cotton reduced the nicotine concentration three times more and TiO 2 -modified viscose was two times higher under sunlight compared to raw fabrics. No changes in strength were observed for TiO 2 -modified cotton, while the strength of TiO 2 -modified viscose decreased about 45 %. No effect of UV irradiation on cotton and a slight reduction of the strength of raw viscose (7 %) and TiO 2 -modified viscose (16 %) were observed. The Ti contents after washing decreased from 12 to 11 % (cotton) and from 3 to 2.6 % (viscose). The presented method allows obtaining TiO 2 film-anatase on the cotton and viscose fabrics, but its total effectiveness is better for cotton fabrics.

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“…At present, the photocatalysis has become an attractive and promising environmental purification and solar-light utilization technology [1,2]. Through several years of efforts, numerous semiconductor photocatalysts have been widely developed, including TiO 2 , ZnO, Bi 2 WO 6 , and BiVO 4 etc.…”

Section: Introductionmentioning

confidence: 99%