Direct synthesis of nano titania on highly-ordered mesoporous SBA-15 framework for enhancing adsorption and photocatalytic activity

Liou, Tzong-Horng; Hung, Li-Wai; Liu, Chao-Lin; Zhang, Teng-Yuan

doi:10.1007/s10934-017-0544-5

Cited by 31 publications

(13 citation statements)

References 35 publications

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“…The SBA-15 specimens were fabricated utilizing sodium silicate as the silicon precursor and P123 as the template [ 22 , 23 ]. For a representative experiment, 2.0 g of P123 was added to 60 mL of 2.0 M HCl solution under continuous stirring at 300 rpm and 35 °C.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Amino-Functionalized Mesoporous SBA-15 Nanoparticles and the Improved Adsorption of Tannic Acid in Wastewater

2022

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Ordered mesoporous Santa Barbara amorphous (SBA-15) materials have high surface areas and are widely used in adsorption, separation, filtration, and heterogeneous catalytic processes. However, SBA-15 surfaces contain hydroxyl groups that are unsuited to the adsorption of organic pollutants; thus, SBA-15 must be chemically modified to promote its adsorption activity. In this study, amino-functionalized nanoporous SBA-15 was fabricated by employing sodium silicate as a precursor. The structural characteristics of the prepared composites were examined using thermogravimetric analysis, X-ray diffraction, Fourier transform infrared spectrometry, field-emission scanning electron microscopy, transmission electron microscopy, and surface area analysis. The prepared SBA-15 had a large pore size (6.46–7.60 nm), large pore volume (1.037–1.105 cm3/g), and high surface area (546–766 m2/g). Functionalization caused a reduction in the SBA-15 pore volume and surface area, whereas amino groups that promoted an interaction between adsorbates and solids facilitated solute adsorption. The adsorption of tannic acid (TA) onto amino-modified silica composites (SBA-15 and 3-aminopropyltriethoxysilane (SBA-15/APTES) and SBA-15 and pentaethylenehexamine (SBA-15/PEHA)) was studied. Their adsorption capacities were affected by solution temperature, solution pH, agitation speed, adsorbent dosage, and initial TA concentration. The maximum adsorption capacities for SBA-15/APTES and SBA-15/PEHA were 485.18 and 413.33 mg/g, respectively, with SBA-15/APTES exhibiting ultrafast removal of TA (98.61% removal rate at 15 min). In addition, this study explored the thermodynamics, adsorption isotherms, and kinetics. A comparison of two types of amino-functionalized SBA-15 was used for the first time to adsorb TA, which providing valuable information on TA adsorption on high adsorption capacity materials in water media.

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Section: Methodsmentioning

confidence: 99%

Preparation of Amino-Functionalized Mesoporous SBA-15 Nanoparticles and the Improved Adsorption of Tannic Acid in Wastewater

2022

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“…SBA-15 silica support has hexagonal pore structure with surface area as high as 1000 m2/g and thick pore walls can facilitate the efficient dispersion of titania and easy recovery of catalyst upon completion of reaction. Liou et al reported synthesis of titania incorporated SBA-15 via sol-gel synthesis for degradation of methylene blue dye [ 130 ]. The calcination temperature of the catalyst had influenced the photocatalytic activity.…”

Section: Applications Of Titania As Photocatalystmentioning

confidence: 99%

Nanocomposites containing titanium dioxide for environmental remediation

Alsheheri

2021

Designed Monomers and Polymers

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Titania is considered to be one of the most versatile material in its nanoform. Scientific community looks towards it to address various pressing global problems. One such problem is aquatic pollution arising from organic chemicals such as dyes, pesticides, antibiotics etc. due to industrial, domestic and agricultural activities. Titania proves to be very effective to address this problem owing to its superior photocatalytic properties. In this review, we will review the recent advances in titania-based nanocomposites. The recent advances discussed in this review include synthesis of titania, modification of titania, exploration of various supports such as silica, carbon, graphene etc., that is documented to enhance its environmental remediation properties.

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“…The ordered mesoporous silicas have received intense attentions for the past decades due to the various applications, such as catalysis, separation, adsorption, drug loadings and fuel cells because of their ordered mesopore structure, mesopore volume and high surface area. Diverse mesoporous silicas with tunable pore structures, pore sizes and morphologies have been synthesized based on the soft template strategy, such as the MCM‐41, SBA‐15 and KIT‐6 .…”

Section: Figurementioning

confidence: 99%

A Facile Route to Synthesize Micron Size Nearly Spherical Mesoporous Silica Particles

Xing

et al. 2019

ChemistrySelect

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For many applications as structured packing material, the micron size spherical silica particles with the bicontinuous mesoporous structures are required. Herein, we report a facile route to synthesize the micron size nearly spherical mesoporous silica (MSNSMS) particles. The chitosan is crucial in the synthesis strategy as an adjuvant agent to facilitate the formation of the micron size nearly spherical particles. The MSNSMS particles demonstrate narrow mesopore and particle size distributions with the average particle sizes at 3.6 μm (MSNSMS‐0.5) or 4.7 μm (MSNSMS‐1). The MSNSMS samples possess the large ordered domains of pure bicontinuous mesoporous structure with the interpenetrating cylindrical pores at about 8 nm in diameter. The MSNSMS particles are promising structured packing material candidate for catalyst support applications.

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Direct synthesis of nano titania on highly-ordered mesoporous SBA-15 framework for enhancing adsorption and photocatalytic activity

Cited by 31 publications

References 35 publications

Preparation of Amino-Functionalized Mesoporous SBA-15 Nanoparticles and the Improved Adsorption of Tannic Acid in Wastewater

Preparation of Amino-Functionalized Mesoporous SBA-15 Nanoparticles and the Improved Adsorption of Tannic Acid in Wastewater

Nanocomposites containing titanium dioxide for environmental remediation

A Facile Route to Synthesize Micron Size Nearly Spherical Mesoporous Silica Particles

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