Preparation and characterization of silica-doped titania photocatalyst through sol–gel method

Cheng, Ping; Zheng, Mao-Ping; Jin, Yanping; Huang, Qiang; Gu, Mingyuan

doi:10.1016/s0167-577x(02)01409-x

Cited by 148 publications

(89 citation statements)

References 18 publications

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“…The different evidence is happened when the addition of silica into TiO 2 is in a large quantity. Silica can inhibit the formation rutile by impeding direct contact between TiO 2 particle with forming the Ti-O-Si binding [8]. The same phenomenon was also observed on Cr-doped nano-titania in argon [31] where rutile phase is dominant after temperature above 900°C.…”

Section: Photocatalysissupporting

confidence: 56%

“…The increasing of photocatalytic activity is shown by the decreasing of sample's absorbance spectrum. On the other hand, silica plays the role as a carrier of titania and enhances the surface area with enough pore size [8]. The modification of titania in enhancing its catalytic properties can also be conducted by adding nitrogen [9], iodine [10], and Cr [11] to titania.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst

et al. 2015

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Section: Photocatalysissupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst

et al. 2015

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“…TEOS (Tetraethylorthosilicate) and TTIP (Titanium tetra isopropoxide) were used as precursor. It was observed that the TTIP hydrolysis rate is much faster than TEOS [16]. The synthesis consists of two steps.…”

Section: Tio 2-sio 2 Mixed Oxidementioning

confidence: 99%

Photocatalytic Studies of Tio2/Sio2 Nanocomposite Xerogels

Yaseen¹,

Shah²,

Veses³

et al. 2017

J Anal Bioanal Tech

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The use of titania-silica materials in photocatalytic processes has been proposed as an alternative to the conventional TiO2 catalysts, in order to facilitate the separation of products after the reaction. However, despite the large number of research in this field, the mechanism governing the photocatalytic activity of the mixed TiO2/SiO2 oxides is not clear. TitaniaSilica nanocomposite xerogels were prepared by sol-gel method. This work has been used to describe the synthesis and the photocatalytic properties of TiO2-SiO2 nanocomposite xerogel. The nanocomposite xerogels were prepared by keeping the molar ratio of TEOS:TTIP:MtOH:DIW at 1: 1:6:14 respectively and the catalysts used were HCl and NH4OH. After the preparation xerogels were characterized by FTIR, XRD, UV and LLS. All these techniques show the amorphous nature of Titania-silica xerogel.

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“…To assess the durability of the SiO 2 , TiO 2 and SiO 2 @TiO 2 coated samples, an adherence test was performed following the ASTM 3359 [21] and the appropriate references [22][23][24][25][26][27]. In this case, the corresponding test for thin films with thicknesses less than or equal to 2 mm was selected.…”

Section: Durabilitymentioning

confidence: 99%

“…Then, the scotch tape was removed from the opposite end of the application, forming a 180 • angle. Next, the coated area was compared with the patterns presented in Table 2 [22][23][24][25]. In addition, the adherence test was carried out before and after UV light exposure (0, 4 and 26 h), to determine the photocatalytic activity of the SiO 2 @TiO 2 coating.…”

Section: Durabilitymentioning

confidence: 99%

SiO2@TiO2 Coating: Synthesis, Physical Characterization and Photocatalytic Evaluation

et al. 2018

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Use of silicon dioxide (SiO 2 ) and titanium dioxide (TiO 2 ) have been widely investigated individually in coatings technology, but their combined properties promote compatibility for different innovative applications. For example, the photocatalytic properties of TiO 2 coatings, when exposed to UV light, have interesting environmental applications, such as air purification, self-cleaning and antibacterial properties. However, as reported in different pilot projects, serious durability problems, associated with the adhesion between the substrate and TiO 2 , have been evidenced. Thus, the aim of this work is to synthesize SiO 2 together with TiO 2 to increase the durability of the photocatalytic coating without affecting its photocatalytic potential. Therefore, synthesis using sonochemistry, synthesis without sonochemistry, physical characterization, photocatalytic evaluation, and durability of the SiO 2 , SiO 2 @TiO 2 and TiO 2 coatings are presented. Results indicate that using SiO 2 improved the durability of the TiO 2 coating without affecting its photocatalytic properties. Thus, this novel SiO 2 @TiO 2 coating shows potential for developing long-lasting, self-cleaning and air-purifying construction materials.

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Preparation and characterization of silica-doped titania photocatalyst through sol–gel method

Cited by 148 publications

References 18 publications

Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst

Synthesis and Characterization of Titania-Rice Husk Silica Composites as Photocatalyst

Photocatalytic Studies of Tio2/Sio2 Nanocomposite Xerogels

SiO2@TiO2 Coating: Synthesis, Physical Characterization and Photocatalytic Evaluation

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