Synthesis and mechanism of aluminum silicate mesoporous materials by F108 template

Ma, Zhijun; Gao, Jing; Weng, Xingyuan; Yang, Shuai; Peng, Kai

doi:10.2478/msp-2020-0067

Cited by 5 publications

(5 citation statements)

References 7 publications

(2 reference statements)

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“…Adsorption increased when the relative pressure reached 0.8, and a narrow H3 hysteresis loop emerged. The capillary condensation stage of Li 2 S–CoFeP–CN shifted to a higher relative pressure, indicating that the porosity of this sample is lower than that of the CoFeP–CN. , Furthermore, since condensation and evaporation occur at higher relative pressures for larger pores, this shift also indicates that only the largest pores remained after introducing the Li 2 S. The CoFeP–CN pore-size distribution, calculated using the Barret–Joyner–Halenda (BJH) model, confirms that the material is dominated by mesopores (inset of Figure S5). The average pore diameter of Li 2 S–CoFeP–CN is higher than that of the CoFeP–CN composite, and the mesopore volume in Li 2 S–CoFeP–CN is substantially smaller than that of CoFeP–CN, demonstrating that Li 2 S was effectively impregnated into the CoFeP–CN mesoporous channels.…”

Section: Resultsmentioning

confidence: 72%

“…The capillary condensation stage of Li 2 S−CoFeP−CN shifted to a higher relative pressure, indicating that the porosity of this sample is lower than that of the CoFeP−CN. 35,36 Furthermore, since condensation and evaporation occur at higher relative pressures for larger pores, 37 this shift also indicates that only the largest pores remained after introducing the Li 2 S. The CoFeP−CN poresize distribution, calculated using the Barret−Joyner−Halenda (BJH) model, confirms that the material is dominated by mesopores (inset of Figure S5). The average pore diameter of Figure S6 displays the high-resolution valence band X-ray photoelectron spectroscopy (XPS) spectra of g-C 3 N 4 , CoFeP− CN, and Li 2 S−CoFeP−CN samples.…”

Section: ■ Results and Discussionmentioning

confidence: 88%

See 1 more Smart Citation

Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries

Mollania,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

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Section: Resultsmentioning

confidence: 72%

Section: ■ Results and Discussionmentioning

confidence: 88%

Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries

Mollania,

Zhang,

et al. 2023

ACS Appl. Mater. Interfaces

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“…As shown in Table 3, composites prepared from abundantly available and low cost sources in Thailand (Na2SiO3 and 13) 88.5 --Aluminosilicate 3) 45-298 -4.68-27.50 Activated carbon from Magonia pubescens fruit bark 14) 220-441 31-51 8.0-12.6 Mesoporous alumina 15) 334 -3.39 Mesoporous silica (MCM-41) 16) 500-528 -3.53-3.80 Infrared spectroscopy analysis was carried out on the vinasse and the carbon-silica composites to study the functional groups and the results are shown in Fig. 4.…”

Section: Resultsmentioning

confidence: 99%

“…Typical synthesis methods of mesoporous materials include hydrothermal 3) , microwave 2) or polymerization 4) . ※ 3 Biodiversity and Environmental Management Division, International College, Khon Kaen University Khon Kaen, Thailand †Corresponding author: nyuvarat@kku.ac.th Composite materials are a combination of two materials with different physical and chemical properties or mechanical and thermal properties.…”

Section: Introductionmentioning

confidence: 99%

A Simple Method to Synthesize Novel Mesoporous Carbon–silica Composites from the By-product of Ethanol Production

JITTHAM

WONGDEE

THAMDEE

et al. 2022

J. Jpn. Inst. Energy

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Carbon-silica composites with mesoporous structures were synthesized from low-cost materials by conventional heating. The carbon source used was vinasse, a by-product of ethanol production from molasses, while Na2SiO3 and K2SiO3 were utilized as low cost and abundantly available silica sources as alternatives to tetraethyl orthosilicate (TEOS). The simple preparation method was adopted as follows: vinasse was dehydrated with 50% H2SO4 (1:2 in weight ratio) to produce carbon, after which the silica source was added with weight ratio of vinasse:silica source 0.8:1, 0.2:1 and 0.5:1 for Na 2SiO3, K2SiO3 and TEOS, respectively. The mixture was stirred and heated at 80 °C for 6 h, washed with water, and dried at 120 °C for 3 h to obtain the carbon-silica composites. Composites were characterized by N2 adsorption-desorption, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), moisture content, ash content, slurry pH, point of zero charge (pHPZC) and bulk density. The composites exhibited BET (Brunauer-Emmett-Teller) surface areas of 443, 354 and 570 m 2 /g and average pore diameters of 5.20, 5.52 and 7.63 nm when using Na2SiO3, K2SiO3 and TEOS, respectively, as silica sources. The carbon-silica composites were highly mesoporous, accounting for around 71-80% of the total volume. FTIR analysis showed the presence of Si-O-Si bond for all composites. According to TGA results, the adsorbents were thermally stable up to 700 °C. The slurry pH and pHPZC of each composite was very similar with acidic character (slurry pH 2.63-6.80 and pHPZC 2.95-7.00). The bulk density of composites was 560-660 kg/m 3 , higher than some commercial activated carbons. These results indicated that the mesoporous carbon-silica composites prepared from vinasse and low-cost silica sources were promising functional materials for use as potential adsorbents.

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“…The hysteresis loop is a characteristic feature of the isothermal adsorption-desorption graph form by mesoporous material due to capillary condensation of nitrogen in the pores of the particles homogeneous particles. IUPAC distinguishes porous materials into three types, namely microporous (< 20 nm), mesoporous (20-500 nm) and macroporous (> 500 nm) (Ma et al, 2020).…”

Section: Bet Analysis (Physisorption/adsorptiondesorption Isothermal ...mentioning

confidence: 99%

Characteristics of Silica Powder Extracted from Fly Ash of Coal Fired Power Plant: Effect of Heat Treatment Process

Jalil¹,

Nurmalita²,

Madjid³

et al. 2023

J. Ecol. Eng.

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Fly ash waste is a by-product of coal burning at PLTU Nagan Raya, Aceh Province, Indonesia. Since 2017, the coal used is a mixture of 90% Kalimantan coal (sub-bituminous) and 10% local Nagan Raya coal (lignite) which is still young so that the mineral ash content is still high. Silica is among the interesting minerals to be extracted from fly ash, given its wide range of benefits. This paper describes the process of extracting silica from fly ash at the Aceh power plant through the leaching method using a chemical solution and heating for 2 and 4 hours at a temperature of 100˚C. The difference in heat treatment aimed to study the changes in properties and obtain the best method in the silica extraction process. The effect of heat treatment on silica characteristics was studied based on X Ray Diffraction (XRD) test for phase identification, Scanning Electron Microscopy (SEM) test for morphological identification, Energy Dispersive X-Ray Spectroscopy (EDS) test for mineralogy element identification, Fourier Transform Infra-Red (FTIR) test for identification of functional groups and surface chemistry, and differential calorimetric analysis/ thermogravimetric (DSC/TGA) test for identification of thermal properties. As a result, it was found that fly ash still contains unburned carbon, which significantly affects its color, and has the potential for application as a hydrogen storage material because its pore diameter structure is larger than 0.7 nm. The silica extracted from fly ash is capable of achieving a purity of up to 87% and exhibits excellent thermal stability, especially at temperatures between 120-300 °C; thus, it has the potential to be a catalyst material in the adsorption-desorption reaction of hydrogen by magnesium, although further research is still needed.

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Synthesis and mechanism of aluminum silicate mesoporous materials by F108 template

Cited by 5 publications

References 7 publications

Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries

Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries

A Simple Method to Synthesize Novel Mesoporous Carbon–silica Composites from the By-product of Ethanol Production

Characteristics of Silica Powder Extracted from Fly Ash of Coal Fired Power Plant: Effect of Heat Treatment Process

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Synthesis and mechanism of aluminum silicate mesoporous materials by F108 template

Cited by 5 publications

References 7 publications

Nanostructured Li2S Cathodes for Silicon–Sulfur Batteries

Nanostructured Li2S Cathodes for Silicon–Sulfur Batteries

A Simple Method to Synthesize Novel Mesoporous Carbon–silica Composites from the By-product of Ethanol Production

Characteristics of Silica Powder Extracted from Fly Ash of Coal Fired Power Plant: Effect of Heat Treatment Process

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Product

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Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries

Nanostructured Li₂S Cathodes for Silicon–Sulfur Batteries