Properties of Anatase Films for Photocatalyst from Peroxotitanic Acid Solution and Peroxo-Modified Anatase Sol

Ichinose, Hiromichi; Kawahara, Akihiko; Katsuki, Hiroaki

doi:10.2109/jcersj.104.914

Cited by 25 publications

(13 citation statements)

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“…The XRD patterns of nano‐TiO 2 sol dry powders revealed that TiO 2 particles were of anatase phase (Fig. 2), which posses photocatalytic activity (24,25).…”

Section: Resultsmentioning

confidence: 99%

“…Ichinose et al. (25,26) reported that nano‐TiO 2 sol derived from peroxotitanic acid solution was well adhesive and suitable to form sustainable photocatalytic film on coated surfaces of solid. Our previous researches have demonstrated the effectiveness of TiO 2 photocatalyst to control plant diseases of bacteria/fungal pathogens (27–29) by spraying anatase nano‐TiO 2 sol on leaf surfaces of crops.…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus

Cui

Jiang

et al. 2010

Photochem & Photobiology

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This study was conducted to investigate efficiency of TiO(2) nanomaterial as a novel environment-friendly disinfectant to control avian influenza (AI) by its photochemical sterilization ability. Anatase nano-TiO(2) sol, a neutral, viscous aqueous colloid of 1.6% TiO(2) , was synthesized from peroxotitanic acid solution according to the Ichinose method. Transmission electron microscope images showed that the TiO(2) particles were spindle-shaped with an average size of 50 nm. X-ray diffraction patterns revealed that the crystal phase of TiO(2) particles was anatase type with photocatalytic effect. A photocatalytic film of nano-TiO(2) sol was tested as a means of inactivating H(9) N(2) avian influenza virus (AIV). Inactivation capabilities were examined with 365nm ultraviolet (UV) radiation under black light by adjusting the UV intensity, the UV irradiation time and the quantity of AIV. The titer change of AIV was determined by hemagglutination tests. Cytopathic effect of Madin Darby canine kidney (MDCK) cells was monitored by inverted fluorescence microscope. The results showed that anatase nano-TiO(2) sol significantly inactivated AIV under UV irradiation of 365nm. The inactivation of AIV viruses reached up to 100%. Therefore, anatase nano-TiO(2) sol is a potentially environment-friendly antivirus agent to prevent AI.

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“…The XRD patterns of nano‐TiO 2 sol dry powders revealed that TiO 2 particles were of anatase phase (Fig. 2), which posses photocatalytic activity (24,25).…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus

Cui

Jiang

et al. 2010

Photochem & Photobiology

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“…Однако из пероксотитановой кислоты, контролируя рН, щелочные, кислотные агенты и условия термической обработки, удавалось получать одномерные материалы, плѐнки и порошки с необходимым фазовым составом, обладающие высокой фотокаталитической активностью или термической стабильностью. В работах [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] показано, что используя в качестве прекурсора пероксотитановую кислоту, даже в отсутствии органических лигандов, возможно контролировать морфологию, фазовый состав TiO 2 ; также данный метод способствует увеличению термической стабильности фазы анатаза, повышению фотокаталитической активности в сравнении с коммерческими образцами. Стоит отметить, что в литературе не было найдено работ, в которых пероксо-метод применялся для получения материалов на основе SiO 2 /TiO 2 , где присутствие диоксида кремния увеличивало бы фотокаталитическую активность смешанного оксида, поэтому это представляет интерес для дальнейших исследований.…”

Section: экспериментальная частьunclassified

Destruction of Some Dyes on Composite Photocatalysts Based on SiO2/TiO2 Oxides

Авдин¹,

Буланова²,

Asilbekova³

et al. 2020

Chem

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activity of the material. Samples were studied by powder X-ray diffractometry and scanning electron microscopy. Photocatalytic activity was determined for all obtained samples in the decomposition reaction of methylene blue under ultraviolet radiation. The highest degree of substrate degradation was reached by the sample with SiO 2 /TiO 2 ratio equaling 1:2. The possibility of photocatalytic destruction of methyl orange and methylene violet was determined for this sample. Methyl orange was decomposed rather slowly by this photocatalyst, unlike methylene violet and methylene blue. The resulting photocatalysts can be used to purify water from dyes. Keywords: sol-gel technology, titania, silica, composite photocatalysts SiO 2 /TiO 2 , photocatalytic destruction of dyes.

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“…We have reported that peroxotitanic acid (PTA) solutions and peroxo-modified anatase (PA) sols are neutral in pH, im purity-free, and suitable for low-temperature coating of anatase films as a potocatalyst.4)-6) The adhesion and the density of the films prepared from the PTA solution were very high, while the photocatalytic decomposition of acetic acid on the films prepared from the PA sol was very fast. 5) The PA sol was synthesized by heating the PTA solution at 100 for 6h, and it contained well-dispersed ultrafine anatase particles (9nm) in spite of being neutral in pH. This is because of existence of the peroxo groups on their surfaces.4) The anatase particles aggregated with heating above 120 for 6h owing to decomposition of the peroxo groups, and it was very difficult to use them as a coating agent.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activities of Coating Films Prepared from Peroxotitanic Acid Solution-Derived Anatase Sols

Ichinose¹,

Katsuki²

1998

J. Ceram. Soc. Japan

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Anatase sols were prepared from peroxotitanic acid solution by heating at 100 for 2-20h. The sols con sisted of fine anatase particles of diameters less than 20nm and arrowhead-like particles larger than 20nm. The sols heated for 2-6h dispersed well, whereas the sols heated for 8-20h tended to aggregate. The powders obtained by drying the sols had high specific surface areas of 180 to 245m2g-1. On photocatalytic degradation of a commercial vegetable oil on films prepared from the sols, the weight loss was approximated by the zero-order kinetics on the oil concentration at the early stage of the degradation. The film prepared from the sol heated for 6h showed a highest rate constant of 1.6810-5gcm-2h-1 under ultraviolet light ir radiation at 1.4mWcm-2.

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Properties of Anatase Films for Photocatalyst from Peroxotitanic Acid Solution and Peroxo-Modified Anatase Sol

Cited by 25 publications

References 0 publications

Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus

Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus

Destruction of Some Dyes on Composite Photocatalysts Based on SiO2/TiO2 Oxides

Photocatalytic Activities of Coating Films Prepared from Peroxotitanic Acid Solution-Derived Anatase Sols

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Properties of Anatase Films for Photocatalyst from Peroxotitanic Acid Solution and Peroxo-Modified Anatase Sol

Cited by 25 publications

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Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO2 Sol on the H9N2 Avian Influenza Virus

Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO2 Sol on the H9N2 Avian Influenza Virus

Destruction of Some Dyes on Composite Photocatalysts Based on SiO2/TiO2 Oxides

Photocatalytic Activities of Coating Films Prepared from Peroxotitanic Acid Solution-Derived Anatase Sols

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Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus

Photocatalytic Inactivation Efficiency of Anatase Nano‐TiO₂ Sol on the H₉N₂ Avian Influenza Virus