Structural features and photocatalytic behaviour of titania deposited within the pores of SBA-15

Tomoiaga, Alina Maria; Meynen, Vera; Beyers, E.; Mertens, Myrjam; Cool, Pegie; Bilba, Nicolae; Vansant, Etienne F.

doi:10.1016/j.apcata.2006.06.043

Cited by 67 publications

(31 citation statements)

References 40 publications

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“…Figure 3 shows the Raman spectra of TiO 2 /SBA-16(x). Bands at 147, 398, 520 and 641 cm -1 generated by the present of TiO 2 prove the real existence of anatase phase [20]. With low amounts of TiO 2 loading (the TBT amount is 0.46 mL), only one faint band at about 147 cm -1 , assigned to the Eg(1) peak, was observed.…”

Section: Textural Properties and Characterizationmentioning

confidence: 95%

“…When the loading is too high, TiO 2 particles will gather into larger particles and block the mesopores of SBA-16, leading to decrease of photocatalytic activity. Moreover, it can be explained by the quantum size effect [20]. On the contrary, if the loading is too small, the photoactive sites are relatively low, which leads to the increase of average distance from the photoactive sites to the adsorption sites.…”

Section: The Adsorption and Photocatalytic Activity Of Tio 2 /Sba-16mentioning

confidence: 97%

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A Simple and Rapid Method to Directly Synthesize TiO2/SBA-16 with Different TiO2 Loading and its Photocatalytic Degradation Performance on Rhodamine B

Tang

et al. 2010

Catal Lett

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SBA-16-supported TiO 2 photocatalysts was synthesized by internal hydrolysis method. The synthesized samples were characterized in detail by X-ray diffraction (XRD), Raman spectra, N 2 adsorption-desorption, transmission electron microscopy (TEM), UV-Visible absorption spectra and X-ray photoelectron spectroscopy (XPS). The results indicated that SBA-16 retained the 3D cagedlike mesostructure while TiO 2 located almost inside the mesoporous channels in form of small crystals with anatase structure. The photodecomposition of Rhodamine B (RhB) in aqueous medium was selected to evaluate the photocatalysis performance of TiO 2 /SBA-16. The influences of different TiO 2 loading were studied. The results indicated that TiO 2 /SBA-16 synthesized by IH method showed much higher photodegradation ability towards RhB than pure TiO 2 and TiO 2 /SBA-15.

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Section: Textural Properties and Characterizationmentioning

confidence: 95%

Section: The Adsorption and Photocatalytic Activity Of Tio 2 /Sba-16mentioning

confidence: 97%

A Simple and Rapid Method to Directly Synthesize TiO2/SBA-16 with Different TiO2 Loading and its Photocatalytic Degradation Performance on Rhodamine B

Tang

et al. 2010

Catal Lett

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“…[16][17][18][19] Fe 2 O 3 /SBA-15 nano composites, titania-deposited SBA-15, crystalline iron oxide supported on meso-structured SBA-15 materials, Fe/SBA-15 have been applied to waste water treatment processes. [20][21][22][23] The use of a solid catalyst offers the further advantages of easy recovery, regeneration and reuse, compared to a homogeneous catalyst.…”

Section: Introductionmentioning

confidence: 99%

SBA-15 Supported Fe, Ni, Fe-Ni Bimetallic Catalysts for Wet Oxidation of Bisphenol-A

Mayani¹,

Mayani²,

Kim³

2014

Bulletin of the Korean Chemical Society

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Bisphenol A is considered as pollutant, because it is toxic and hazardous to living organisms even at very low concentrations. Biological oxidation used for removing this organic from waste water is not suitable and consequently application of catalytic wet oxidation has been considered as one of the best options for treating bisphenol A. We have developed Fe/SBA-15, Ni/SBA-15 and Fe-Ni/SBA-15 as heterogeneous catalysts using the advanced impregnation method for oxidation of bisphenol A in water. The catalysts were characterized with physico-chemical characterization methods such as, powder X-ray diffraction (PXRD), FT-IR measurements, N 2 adsorption-desorption isotherm, thermo-gravimetric analysis (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. This work illustrates activity of the catalysts for heterogeneous catalytic degradation reaction revealed with excellent conversion and recyclability. The degradation products identified were not persistent pollutants. GC-MS analysis identified the products: 2,4-hexadienedioic acid, 2,4-pentadienic acid and isopropanol or acetic acid. The leachability study indicated that the catalysts release very little metals to water. Therefore, the possibility of water contamination through metal leaching was almost negligible.

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“…Intensity of the peaks decreases with increasing the Ti/Si ratio. It is understood that the presence of titanium oxide may cause accidental collapse of the mesoporous channels 16 . Table 1.…”

Section: N 2 Adsorption-desorption Isothermsmentioning

confidence: 99%

Phenol and methylene blue photodegradation over Ti/SBA-15 materials under uv light

Olejnik

Pasieczna-Patkowska

Lesiuk

et al. 2016

Polish Journal of Chemical Technology

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Ordered SBA-15 mesoporous silica supports have been synthesized and used for incorporation of titanium with different Ti/Si weight ratio via incipient wetness impregnation. Titanium tetraisopropoxide (TTIP) was used as a source of Ti. Obtained catalysts were characterized to investigate the chemical framework and morphology by nitrogen sorption measurements, powder X-ray diffraction (XRD), X-ray fl uorescence elemental analysis (XRF), transmission electron microscopy (TEM), UV-Vis diffuse refl ectance spectroscopy (UV-Vis DRS) and Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS). The photocatalytic degradation of phenol and methylene blue water solutions were selected as a probe reactions to the photoactivity test of prepared samples and to verify the potential application of these materials for water purifi cation. Experimental results indicate that the photocatalytic activity of Ti/Si mixed materials depends on the adsorption ability of composites and the photocatalytic activity of the titanium oxide.

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Structural features and photocatalytic behaviour of titania deposited within the pores of SBA-15

Cited by 67 publications

References 40 publications

A Simple and Rapid Method to Directly Synthesize TiO2/SBA-16 with Different TiO2 Loading and its Photocatalytic Degradation Performance on Rhodamine B

A Simple and Rapid Method to Directly Synthesize TiO2/SBA-16 with Different TiO2 Loading and its Photocatalytic Degradation Performance on Rhodamine B

SBA-15 Supported Fe, Ni, Fe-Ni Bimetallic Catalysts for Wet Oxidation of Bisphenol-A

Phenol and methylene blue photodegradation over Ti/SBA-15 materials under uv light

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