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Takai, Yoshimi; Suganuma, Motohiro

doi:10.1023/a:1011268421046

Cited by 88 publications

(38 citation statements)

References 12 publications

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“…4a) showed two endothermic peaks at 98 and 172 • C, associated with the loss of physically adsorbed and entrapped water, respectively [33] and three exothermic peaks at 324, 408, and 643 • C. They are attributed to the partial dehydroxylation of the titania surface, the crystallization of anatase phase [34,35] and the transformation of anatase into rutile phase [36], respectively.…”

Section: Resultsmentioning

confidence: 99%

Direct modification with tungstophosphoric acid of mesoporous titania synthesized by urea-templated sol–gel reactions

Fuchs

Soto

Blanco

et al. 2008

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Direct modification with tungstophosphoric acid of mesoporous titania synthesized by urea-templated sol–gel reactions

Fuchs

Soto

Blanco

et al. 2008

Journal of Colloid and Interface Science

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“…The literature reports that TiO 2 powder changes its crystal structure from anatase-amorphous to anatase-rutile when it is calcined at high temperature (19)(20). The catalyst crystal structure might also be changed due to photon absorption or catalytic reactions.…”

Section: Resultsmentioning

confidence: 99%

CO2 Sequestration and Recycle by Photosynthesis

Chuang¹

2006

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Hydrocarbon synthesis from photocatalytic reactions of CO 2 and H 2 O over various catalysts has been studied by UV-visible light. The quantum efficiencies suggest that Pd/TiO 2 sol gel exhibits the highest activity for hydrocarbon synthesis from photocatalytic reactions. The in situ IR could successfully monitor the adsorbed hydrocarbon species. The UV-visible, IR spectroscopy and XRD techniques were used to characterize the catalysts to obtain the information of properties of the process and catalyst before/after reaction. The UV-visible spectroscopy provides the information about the surface band gap energy of each catalyst. In situ UV-visible studies reveals that TiO 2 -supported catalysts require the higher energy (i.e.shorter wavelength) to pass through the water-thin film deposited on the surface to activate the photocatalytic reaction. XRD data show there is changes in the crystal structure of TiO 2 sol gel from photon energy during photo reaction. The information from this study can lead to a better understanding of the nature of the catalysts and photoreaction processes, which might provide the information to develop better catalysts and reaction process for the hydrocarbon synthesis from photocatalytic reactions of CO 2 and H 2 O.3

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“…However the exothermic peak attributed to the thermal decomposition of the organic matter and sintering occurs in different temperature depending on the quantity of the iron as doping (Table 1). IR spectra of the samples (Table 2) heated at 400 ºC show a broad absorption band in the region of 1100-400 cm -1 corresponding to the Ti-O-Ti network [35,36,37]. As the iron concentration increases this band diminish its intensity and moves to longer wavenumbers.…”

Section: Undoped Tiomentioning

confidence: 99%

Synthesis and characterization of Fe(III)-doped ceramic membranes of titanium dioxide and its application in photoelectrocatalysis of a textile dye

et al. 2011

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Pure and Fe(III)-doped TiO2 suspensions were prepared by the sol gel method with the use of titanium isopropoxide (Ti(OPri)4) as precursor material. The properties of doped materials were compared to TiO2 properties based on the characterization by thermal analysis (TG-DTA and DSC), X-ray powder diffractometry and spectroscopy measurements (FTIR). Both undoped and doped TiO2 suspensions were used to coat metallic substrate as a mean to make thin-film electrodes. Thermal treatment of the precursors at 400°C for 2 h in air resulted in the formation of nanocrystalline anatase TiO2. The thin-film electrodes were tested with respect to their photocatalytic performance for degradation of a textile dye in aqueous solution. The plain TiO2 remains as the best catalyst at the conditions used in this report.

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Cited by 88 publications

References 12 publications

Direct modification with tungstophosphoric acid of mesoporous titania synthesized by urea-templated sol–gel reactions

Direct modification with tungstophosphoric acid of mesoporous titania synthesized by urea-templated sol–gel reactions

CO2 Sequestration and Recycle by Photosynthesis

Synthesis and characterization of Fe(III)-doped ceramic membranes of titanium dioxide and its application in photoelectrocatalysis of a textile dye

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