Mar 9, 2012 · The purpose of this article is to study the influence of gamma irradiation on the sorption capacity and photocatalytic activity of commercially available TiO2 Degussa P25. The photocatalyst was gamma-irradiated at ambient temperature with doses 8–60 kGy (137Cs, dose rate 2 kGy/24 h) and then stored until analysis/tests in liquid N2. X-ray diffraction, SEM, TEM, …
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P25 TiO 2-P25/ITO A R A A A A A A A R R A Figure 2. XRD patterns of P25 powder and TiO 2-P25/ITO film. adhesion than P25/ITO film. In addition, the TiO 2 films with macroporous structure are beneficial to the enhancement of surface area for photocatalytic reaction and the increase of mass transfer in the pore channels.
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For example, Aeroxide Degussa P25 (TiO 2 ) titania has been widely used as a reference photocatalyst and consists of 30% rutile and 70% anatase (Wang et al. 2012). Luo et al. (2015) measured the ...
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The pseudo-first order rate constants in the P25 mass basis for photocatalytic degradation of TPA were 0.0152 ± 0.003 min−1 and 0.0144 ± 0.007 min− using pure P25 and SiO2 sol-gel/TiO2 sol ...
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Oct 1, 2001 · The improved photocatalytic activity of P25 is attributed to its junction, which reduces the e − /h + recombination [16]. TiO 2 -P25 is known for its lack of toxicity when presented as ...
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Apr 16, 2013 · The TiO2 powders were synthesized by versatile and low cost sol–gel process using HNO3 and titanium tetra-isopropoxide (volumetric ratio of 4:1) following by the hydrolysis reaction. The powders show the two polymorphs of TiO2: 96 % anatase and 4 % brookite, due to acidic condition (pH = 3). Thin films of titanium oxide were obtained by dip-coating, using the …
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Jan 7, 2014 · EC Number: 236-675-5; Synonyms: Aeroxide® P25,; Linear Formula: TiO2 at Sigma-Aldrich ... Titanium dioxide nanoparticles (TiO2NPs) have been widely used as food additives in daily life. However, the impact of oral intake of TiO2NPs ...
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Download scientific diagram | Characteristics of TiO 2 (P25 Degussa). from publication: Factors influencing the adsorption and photocatalysis of direct red 80 in the presence of a TiO 2 ...
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Nov 19, 2010 · Surface hydroxy groups are known to play a significant role in the photocatalytic behavior of TiO2. The molecular or dissociative character of H2O adsorption on titania is strongly affected by the local surface structure, but dissociation, producing −OH, should prevail on surface sites with a high degree of coordinative unsaturation. Here we report an IR investigation of …
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