Methylene blue photodegradation over titania-decorated SBA-15

Acosta-Silva, Y.J.; Nava, R.; Hernández-Morales, V.; Macías-Sánchez, S.A.; Gómez-Herrera, M.L.; Pawelec, B.

doi:10.1016/j.apcatb.2011.08.032

Cited by 115 publications

(80 citation statements)

References 55 publications

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“…Comparison of the diffraction patterns shows that the crystalline species of Ti added in various proportions during the hydrothermal 25 reported that Si improves thermal stability and inhibits the transformation of anatase to rutile since the surrounding Si stabilizes the Ti-O bonds at the interface with SiO 2 . In addition, Resende et al 40 reported that a homogeneous silica layer was formed in contact with TiO 2 , which inhibited the appearance of the rutile phase because of insufficient atomic diffusion.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the Ti2p 3/2 and Ti2p 1/2 peaks blueshied to 456.3 eV and 462.0 eV due to the quantum size effect that resulted from the decrease in TiO 2 particle size. 25,52 As shown in Fig. 2, TR(30) and TR(50) were smaller than TR (10).…”

mentioning

confidence: 98%

“…Various mesoporous Ti-SBA15 catalysts have been synthesized by post-synthesis, 25 sol-gel method, 26 hydrothermal process, 27,28 impregnation, 29,30 graing method, 31 and gas deposition. 32 These studies concluded that Ti-SBA15 synthesized with a well ratio of Si/Ti was advantageous for high photocatalytic activity such as high S BET (179-898 m 2 g À1 ) and pore volume (0.34-1.45 cm 3 g…”

Section: 23-25mentioning

confidence: 99%

“…According to earlier studies, 25,29 Si enhances the thermal stability and crystallinity of TiO 2 during calcination, as shown in Table 2. By comparing with the intensity of standard XRD patterns of TiO 2 , crystallinities of anatase and rutile phase were calculated.…”

mentioning

confidence: 99%

“…25 An ideal structure of a catalyst contributes to efficient catalysis by improving the four underlying catalytic mechanismsabsorption, migration, oxidation/reduction, and desorption.…”

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confidence: 99%

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Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Lee

2018

RSC Adv.

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a This study differs from previous studies of TiO 2 /SiO 2 in that 0.5-10 mm microsized TiO 2 -rutile based catalysts (TR catalysts) with varying proportions of titanium and silicon were synthesized using a onestep modified hydrothermal method. At Ti/Si ¼ 1/9, a two-dimensional channel-structured catalyst with a morphology resembling that of SBA-15 was obtained. In contrast, at Ti/Si ¼ 3/7 or 5/5, a threedimensional porous structure was formed, and Ti-O-Si-C bonds appeared. The structure of the TR catalyst transformed due to the decrease in C-Si bond content and the increase in C-C bond content with increasing Ti/Si ratio. The results indicated that the rutile phase was the main crystal phase of the TR catalyst. The small crystal size and large rutile phase content of the mesoporous TR catalyst contributed to the low band gap energy below 3.0 eV. Under 2 Â 10 W lamp irradiation with either UVA or visible light, the three TR catalysts showed better formaldehyde (HCHO) removal efficiency than P25. Overall, the Pt/TR catalyst is a potential material for pollutant removal and can be easily separated from the pollutant removal system since the catalysts are microsized.

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Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 98%

Section: 23-25mentioning

confidence: 99%

mentioning

confidence: 99%

“…25 An ideal structure of a catalyst contributes to efficient catalysis by improving the four underlying catalytic mechanismsabsorption, migration, oxidation/reduction, and desorption.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Lee

2018

RSC Adv.

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Synergistic Multilevel Sieving Membranes: Integrating Cellular Graphene Skeleton with Continuous MOFs Nanolayer for Superior Multiphase Water Separation

Zhang,

Yuan,

Wang

et al. 2023

Adv Funct Materials

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The emergence of MOF–based separation membranes has transformed liquid contaminant filtration with impressive sieving properties. However, their use in multiphase water filtration is hindered by a limited sieving range and susceptibility to collapse in solution. To address this challenge, an innovative solution is presented: the Multilevel Cellular Graphene Skeleton (MCGK) induced by femtosecond laser, onto which a continuous MOF nanolayer (CMN), specifically ZIF–8, is grown. This forms a groundbreaking multistage micron/nanocomposite pore membrane. The MCGK/CMN membrane significantly expands the range of filterable contaminants and enhances stability. It utilizes a multilevel, multi–pore size sieving strategy for effective multiphase water filtration, achieving an impressive 90% efficiency in self–driven solar steam generation sieving. Additionally, it excels in removing organic pollutants and over 80% of volatile organic compounds (VOCs), while reducing metal ion concentrations. In liquid pressure–driven filtration, it achieves complete oil adsorption and reduces VOCs and metal ion concentrations. This innovative multistage micron/nanocomposite pore membrane holds great potential for diverse practical applications and provides insights for next–generation nanofiltration membranes, promising more efficient and resilient water purification technologies in the future.

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Reforming of Rice Ash Waste by Incorporated Nanotitania in Silica Framework for Photo‐catalytic Treatment of Wastewater

El‐Salamony

Hassan

2020

Applied Organom Chemis

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The nano‐composites based on the burnt rice straw waste, reformed by nano‐TiO2 and copper phthalocyanine (CuPc), namely, RSA‐TiO2, RSA‐CuPc, and RSA‐TiO2‐CuPc were prepared by a mechano‐chemical method. The as‐prepared composite systems were characterized by adopting FE‐SEM, TEM, XRD, FTIR, SBET, and optical techniques. Their photo‐catalytic performance in the degradation of methylene blue dye was evaluated under visible light irradiation. The co‐existence of the two components in RSA, SiO2 and organic carbon, plus the inherently intimate contact between nano‐TiO2 and CuPc could improve the photo‐degradation of MB dye. The complete degradation of MB dye was achieved by using RSA‐TiO2 (50) nano‐composite and the time is taken for 50% degradation of a dye is 53 min under visible light radiation. The kinetic study revealed that photo‐degradation of MB follows a pseudo‐first‐order reaction mechanism, where the kinetic rate constant was 0.013 min−1.

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Methylene blue photodegradation over titania-decorated SBA-15

Cited by 115 publications

References 55 publications

Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Synergistic Multilevel Sieving Membranes: Integrating Cellular Graphene Skeleton with Continuous MOFs Nanolayer for Superior Multiphase Water Separation

Reforming of Rice Ash Waste by Incorporated Nanotitania in Silica Framework for Photo‐catalytic Treatment of Wastewater

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Methylene blue photodegradation over titania-decorated SBA-15

Cited by 115 publications

References 55 publications

Study of the structure and characteristics of mesoporous TiO2 photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Study of the structure and characteristics of mesoporous TiO2 photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Synergistic Multilevel Sieving Membranes: Integrating Cellular Graphene Skeleton with Continuous MOFs Nanolayer for Superior Multiphase Water Separation

Reforming of Rice Ash Waste by Incorporated Nanotitania in Silica Framework for Photo‐catalytic Treatment of Wastewater

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Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio

Study of the structure and characteristics of mesoporous TiO₂ photocatalyst, and evaluation of its factors on gaseous formaldehyde removal by the analysis of ANOVA and S/N ratio