Photocatalytic degradation of phenol using silica SBA-16 supported TiO2

Gholizadeh, Farshad; Dianat, Mohammad Javad; Izadbakhsh, Ali

doi:10.1007/s11144-020-01817-5

Cited by 8 publications

(4 citation statements)

References 59 publications

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“…Nevertheless, the rate constants obtained by various models should be taken cautiously since lumped rate constants have no clear kinetic significance due to their unclear kinetic regimes [ 47 ]. Unfortunately, though, there have still been relatively few studies that describe the kinetics between adsorbates, such as TCS, and adsorbents since most of them have focused on materials synthesis and adsorption capacities rather than kinetics [ 57 , 58 , 59 ]. Additionally, kinetic studies to describe the adsorption of TCS and other phenolic compounds in the presence of other common species in solution [ 60 ], a situation close to a real waste stream system, are lacking.…”

Section: Nanomaterials For Adsorption Of Tcs and Phenolic Derivativessmentioning

confidence: 99%

“…For example, hollow TiO 2 nanomaterials was found to photodegrade organic dyes more selectively than commercial P25 TiO 2 (Degussa) does, even if the former exhibited less adsorption capacity than their solid counterparts [ 83 ]. In another report, Gholizadeh et al showed that SBA-16 type mesoporous silica would enable supported TiO 2 (TiO 2 /SBA-16) to exhibit photocatalytic activity for degradation of phenol than pure TiO 2 [ 58 ]. While a commercially available P25 TiO 2 (Degussa) photodegraded only 27% of phenol in solution in 5 h, 10% TiO 2 /SBA-16 enabled the removal of 62% phenol in solution in the same period under the same experimental conditions.…”

Section: Photocatalysismentioning

confidence: 99%

“…While a commercially available P25 TiO 2 (Degussa) photodegraded only 27% of phenol in solution in 5 h, 10% TiO 2 /SBA-16 enabled the removal of 62% phenol in solution in the same period under the same experimental conditions. While in this work, phenol was studied as a model pollutant, it could serve as a framework for exploring the potential photocatalytic application of such materials for the degradation of TCS and other common phenolic emerging pollutants in the same way [ 58 ]. More importantly, these examples highlight the design of photocatalytic materials with the right structures and compositions to improve their photocatalytic activity and selectivity toward the degradation of specific organic pollutants from phenolic contaminants from water systems.…”

Section: Photocatalysismentioning

confidence: 99%

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Nanomaterials for Removal of Phenolic Derivatives from Water Systems: Progress and Future Outlooks

Ramírez-Hernández,

Cox,

Thomas

et al. 2023

Molecules

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Environmental pollution remains one of the most challenging problems facing society worldwide. Much of the problem has been caused by human activities and increased usage of various useful chemical agents that inadvertently find their way into the environment. Triclosan (TCS) and related phenolic compounds and derivatives belong to one class of such chemical agents. In this work, we provide a mini review of these emerging pollutants and an outlook on the state-of-the-art in nanostructured adsorbents and photocatalysts, especially nanostructured materials, that are being developed to address the problems associated with these environmental pollutants worldwide. Of note, the unique properties, structures, and compositions of mesoporous nanomaterials for the removal and decontamination of phenolic compounds and derivatives are discussed. These materials have a great ability to scavenge, adsorb, and even photocatalyze the decomposition of these compounds to mitigate/prevent their possible harmful effects on the environment. By designing and synthesizing them using silica and titania, which are easier to produce, effective adsorbents and photocatalysts that can mitigate the problems caused by TCS and its related phenolic derivatives in the environment could be fabricated. These topics, along with the authors’ remarks, are also discussed in this review.

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Section: Nanomaterials For Adsorption Of Tcs and Phenolic Derivativessmentioning

confidence: 99%

Section: Photocatalysismentioning

confidence: 99%

Section: Photocatalysismentioning

confidence: 99%

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Nanomaterials for Removal of Phenolic Derivatives from Water Systems: Progress and Future Outlooks

Ramírez-Hernández,

Cox,

Thomas

et al. 2023

Molecules

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“…When the reaction temperature is 90–130 °C and the hydrogen pressure is 2.5–6 MPa, the conversion rate of phenol reaches 100%. Gholizadeh et al [ 16 ] used SBA-16 as carrier and TiO 2 as active component to synthesize a semiconductor compound by one-pot method. The analysis results show that the active center of metal modified SBA-16 is increased, and under the optimum conditions, TiO 2 /SBA-16 photocatalyst can improve the phenol conversion rate.…”

Section: Introductionmentioning

confidence: 99%

Study on MoO3/SBA-16 catalyzed transesterification to synthesize diphenyl carbonate

HE¹

2022

Turkish Journal of Chemistry

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In this paper, the mesoporous molecular sieve SBA-16 with good dispersion was prepared by hydrothermal method. Under the condition of Si/Mo= 1.0, MoO 3 /SBA-16 catalysts were prepared by iso-dipping method at 550 °C, 650 °C and 750 °C calcination temperature, which for the synthesis of diphenyl carbonate (DPC) from dimethyl carbonate (DMC) and phenyl acetate (PA) was used, and the uncalcined MoO 3 /SBA-16 was used as a reference. XRD, TG-DTA, XPS, ICP-MS, FT-IR, BET, SEM and TEM characterization. The effects of calcination temperature and reaction conditions on the catalytic performance of MoO 3 /SBA-16 in transesterification of DMC and PA were investigated. The results show that the MoO 3 /SBA-16 catalyst prepared at 550 °C has the best catalytic performance in the reaction of DMC and PA ester exchange, and the catalyst has the best catalytic performance in the appropriate reaction strip (n(PA) = 1.0 mol; n (PA)/n (DMC) = 2.0; m (MoO 3 /SBA-16) = 6.0g; t = 5.0 h; T = 180 °C), the DMC conversion is 78.5%, and the selectivity of methyl phenyl carbonate (MPC) and DPC is 51.1% and 46.5%, respectively. After five cycles, the catalyst activity decreased and the conversion of DMC decreased from 78.5% to 15.8%. However, its crystal structure remained unchanged. The used catalyst can be easily regenerated by calcination in air at 550 °C for 5 h. The catalytic performance of the regenerated catalyst was almost as high as that of the fresh one.

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Black titania with increased defective sites for phenol photodegradation under visible light

Fuentes

Venuti

Betancourt

2020

Reac Kinet Mech Cat

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Photocatalytic degradation of phenol using silica SBA-16 supported TiO2

Cited by 8 publications

References 59 publications

Nanomaterials for Removal of Phenolic Derivatives from Water Systems: Progress and Future Outlooks

Nanomaterials for Removal of Phenolic Derivatives from Water Systems: Progress and Future Outlooks

Study on MoO3/SBA-16 catalyzed transesterification to synthesize diphenyl carbonate

Black titania with increased defective sites for phenol photodegradation under visible light

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