Surfactant-Assisted Preparation and Characterization of Mesoporous Titania Nanocrystals-Effect of Various Processing Conditions-

Sakulkhaemaruethai, Singto; Suzuki, Yoshikazu

doi:10.2109/jcersj.112.547

Cited by 10 publications

(16 citation statements)

References 35 publications

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“…The formation of titania nanocrystals were conducted through SATM, as described in our previous papers [17,18]. Briefly, a mixture of tetra(i-propyl) orthotitanate (TIPT, Tokyo Chemical Industry Co., Japan) and acetylacetone (ACA, Nacalai Tesque, Inc., Japan) in a molar ratio of 1 : 1 was reacted with a surfactant solution at room temperature.…”

Section: Methodsmentioning

confidence: 99%

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Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

2005

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Section: Methodsmentioning

confidence: 99%

“…In our previous study [17], it was reported that mesoporous titania nanocrystals with surface area of up to 140 m 2 g À 1 were successfully prepared by surfactantassisted templating method (SATM). In this paper, the effects of calcination condition on the photocatalytic activity of mesoporous titania nanocrystals are presented.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

2005

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“…Both the solutions were mixed together and warmed up to 40°C until the mixture became transparent. The above solution was autoclaved up to 80ºC for 72 h. The suspension was centrifuged at 8,000 rpm and residue was washed with alcohol for three times to remove the surfactant (Adachi et al 2004;Sakulkhaemaruethai et al 2004). The dried sample was calcined at 500°C.…”

Section: Surfactant Routementioning

confidence: 99%

Removal of Mixed Pesticides from Drinking Water System Using Surfactant-Assisted Nano-TiO2

Senthilnathan

Philip

2009

Water Air Soil Pollut

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The present study focused on the degradation of mixed pesticides using UV-induced photocatalytic degradation of lindane (1α,2α,3β,4α,5α,6β-hexachlorocyclohexane), methyl parathion (O,Odimethyl-O-4-nitrophenyl phosphorothioate), and dichlorvos (2,2-dichlorovinyl-O-O-dimethyl phosphate). Different grades of TiO 2 were prepared through the acid route (AR), alcohol route (AlR), and surfactant route (SR) and their photocatalytic activity were compared with commercially available Degussa P-25 TiO 2 . The rate of degradation of pesticides was high for TiO 2 prepared through the SR compared to the other three catalysts. The crystalline structure and morphology of SR TiO 2 was identified with scanning electron microscope, energy dispersive X-ray analyzer, UV, and transmission electron microscope analyses and was compared with that of Degussa P-25 TiO 2 . Degradation studies of individual as well as mixed pesticides were carried out. The intermediate formed during the photodegradation of methyl parathion, lindane, and dichlorvos were identified by gas chromatography-mass spectrometry analysis.

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“…The superior quality of mesoporous catalysts prepared by the surfactant‐assisted sol–gel method has attracted much interest. This method, results in materials with regular pore size distributions and the shape and volume and specific surface area of the pores can be controlled by changing the preparation conditions . Sakulkhaemaruethai et al .…”

Section: Introductionmentioning

confidence: 99%

Influence of the specific surface area and silver crystallite size of mesoporous Ag/SrTiO₃ on the selectivity enhancement of ethylene oxide production

Adhami

Esfahany

Eränen

et al. 2019

J of Chemical Tech & Biotech

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Background Ethylene oxide, which is industrially produced by ethylene epoxidation, is an important versatile chemical intermediate, thus its selectivity enhancement can bring substantial economic profits. In this work, the effects of two important, but still debatable, factors, i.e. catalyst specific surface area and active phase crystallite size, on the catalyst selectivity enhancement were investigated. Surfactant assisted sol–gel method with good control ability on the pores structure was selected to produce mesoporous strontium titanate (SrTiO3) nanocrystals with various specific surface area. The SrTiO3 nanocrystals were used as the supports of silver (Ag) for ethylene epoxidation. Results The Ag/SrTiO3 catalysts with various surface areas were obtained by changing the surfactant‐alkoxide ratio and the calcination time. The ethylene oxide selectivity of the prepared catalysts was examined in a laboratory‐scale fixed bed reactor. The best performance was observed at the lowest surfactant–alkoxide ratio of 0.2 and calcination time of 4 h, with the surface area of 1.7 m2/g and Ag crystallite size of 15 nm. Conclusion The best catalyst selectivity was observed at the lowest surface area and the highest average Ag crystallite size. In this condition, the selectivity of the Ag/SrTiO3 catalyst without any modifier was superior to a commercial Ag/Al2O3 catalyst with 3.7m2/g surface area and alkaline earth metal modifiers. © 2019 Society of Chemical Industry

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Surfactant-Assisted Preparation and Characterization of Mesoporous Titania Nanocrystals-Effect of Various Processing Conditions-

Cited by 10 publications

References 35 publications

Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

Removal of Mixed Pesticides from Drinking Water System Using Surfactant-Assisted Nano-TiO2

Influence of the specific surface area and silver crystallite size of mesoporous Ag/SrTiO₃ on the selectivity enhancement of ethylene oxide production

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Surfactant-Assisted Preparation and Characterization of Mesoporous Titania Nanocrystals-Effect of Various Processing Conditions-

Cited by 10 publications

References 35 publications

Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

Photocatalytic activity of titania nanocrystals prepared by surfactant-assisted templating method—Effect of calcination conditions

Removal of Mixed Pesticides from Drinking Water System Using Surfactant-Assisted Nano-TiO2

Influence of the specific surface area and silver crystallite size of mesoporous Ag/SrTiO3 on the selectivity enhancement of ethylene oxide production

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Influence of the specific surface area and silver crystallite size of mesoporous Ag/SrTiO₃ on the selectivity enhancement of ethylene oxide production