scholarly journals Soft-Template Solvent Thermal Method Synthesis of Magnetic Mesoporous Carbon-Silica Composite For Adsorption of Methyl Orange From Aqueous Solution

2021 ◽  
Author(s):  
Bo Zhu ◽  
Jiangyan Xu ◽  
Zhihui Xu ◽  
Meisheng Wu ◽  
Hongmei Jiang
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
High Specific Surface Area ◽  
Soft Template ◽  
Thermal Method ◽  
Adsorption Effect ◽  
Silica Composite ◽  
Water Matrix

Abstract A facile soft-template solvent thermal strategy was developed to prepare mesoporous carbon-silica composite (MMCS) by using furfuryl alcohol(FA) as carbon precursor, Pluronic copolymer P123 as template, hydrated iron nitrate as iron source, and teraethylorthosilicate as silicon source and it was applied for the removal of methyl orange (MO). The as-synthesized MMCS with abound of hydrophilic groups processed a high specific surface area, large pore volume, and good magnetic response. With the increase amount of FA, the surface area and functional groups increased, promoting the adsorption effect. The adsorption isotherm, kinetic and thermodynamics were all studied in detail. Additional, it was shown that the adsorption process could not be interfered by the co-existence of PO43-, NO3-, CO32-, SO42- and real water matrix. Thus, the MMCS prepared in this study could be utilized as an alternative adsorbent for the removal of methyl orange from aqueous solution.

Hierarchically porous carbons from an emulsion-templated, urea-based deep eutectic

2017 ◽  
Vol 5 (31) ◽  
pp. 16376-16385 ◽  
Author(s):  
Katya Kapilov-Buchman ◽  
Lotan Portal ◽  
Youjia Zhang ◽  
Nina Fechler ◽  
Markus Antonietti ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Specific Surface ◽  
Porous Structure ◽  
Surface Area ◽  
Porous Carbon ◽  
High Specific Surface Area ◽  
Hierarchically Porous ◽  
Carbon Monolith ◽  
A Chain ◽  
Micrometer Scale

A hierarchically porous carbon monolith (97% porosity) was generated through the carbonization of an emulsion-templated monolith formed from a chain extended, urea-based, deep-eutectic polymer. The highly interconnected micrometer-scale porous structure had a high specific surface area (812 m2 g−1, largely microporous) and exhibited promising results for aqueous solution sorption applications.

scholarly journals Synthesis and Characterization of Uniform Spherical Nanoporous TiO2Aerogel Templated by Cellulose Alcohol-Gel with Enhanced Photocatalytic Activity

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Zhiming Liu ◽  
Peng Wu ◽  
Shaoli Yang ◽  
Haiying Wang ◽  
Chunde Jin
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Thermal Method ◽  
X Ray ◽  
Double Beam ◽  
Methyl Orange Dye

The spherical nanoporous TiO2aerogels were prepared by a simple ethanol-thermal method, using spherical cellulose alcohol-gel as the template. The morphology, crystalline structure, pore size, specific surface area, and the photocatalytic activity of obtained TiO2aerogel were separately characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N2adsorption-desorption isotherms, and double beam UV-VIS spectrophotometer. The characteristics of TiO2aerogels presented uniform sphere shape, good internal structural morphology, high specific surface area (ranging from 111.88 to 149.95 m2/g), and good crystalline anatase phase. Moreover, methyl orange dye was used as the target pollutant to characterize the photocatalytic activities and the adsorption performance. The photocatalytic experiment shows that the obtained spherical TiO2aerogels had a higher degradation ratio of 92.9% on methyl orange dye compared with aspherical TiO2aerogels prepared from other concentrations of tetrabutyl orthotitanate (TBOT).

S‐Doped Magnetic Mesoporous Carbon for Efficient Adsorption of Methyl Orange from Aqueous Solution

2021 ◽  
Vol 49 (1) ◽  
pp. 2000285
Author(s):  
Jiangyan Xu ◽  
Shiman Zhai ◽  
Bo Zhu ◽  
Jingxin Liu ◽  
Aimin Lu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Mesoporous Carbon ◽  
Magnetic Mesoporous Carbon

scholarly journals Synthesis and Characterization of Copper Impregnated Mesoporous Carbon as Heterogeneous Catalyst for Phenylacetylene Carboxylation with Carbon Dioxide

2020 ◽  
Vol 21 (1) ◽  
pp. 77
Author(s):  
Putri Nurul Amalia ◽  
Iman Abdullah ◽  
Dyah Utami Cahyaning Rahayu ◽  
Yuni Krisyuningsih Krisnandi
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
High Surface ◽  
High Surface Area ◽  
Bet Surface Area ◽  
Soft Template ◽  
Average Pore ◽  
Carbon Dioxide Co2

Carbon dioxide (CO2) is a compound that can potentially be used as a carbon source in the synthesis of fine chemicals. However, the utilization of CO2 is still constrained due to its inert and stable nature. Therefore, the presence of a catalyst is needed in CO2 conversion. This study aims to synthesize copper impregnated mesoporous carbon (Cu/MC) as a catalyst for phenylacetylene carboxylation reaction with CO2 to produce phenylpropiolic acid. The synthesis of mesoporous carbon was performed via the soft template method. The as-synthesized Cu/MC material was characterized by FTIR, SAA, XRD, and SEM-EDX. BET surface area analysis of mesoporous carbon showed that the material has a high surface area of 405.8 m2/g with an average pore diameter of 7.2 nm. XRD pattern of Cu/MC indicates that Cu has been successfully impregnated in the form of Cu(0) and Cu(I). Phenylacetylene carboxylation reaction with CO2 was carried out by varying reaction temperatures (25, 50, and 75 °C), amount of catalyst (28.6, 57.2, and 85.8 mg), type of base (Cs2CO3, K2CO3, and Na2CO3), and variation of support. The reaction mixtures were analyzed by HPLC and showed that the highest phenylacetylene conversion of 41% was obtained for the reaction at 75 °C using Cs2CO3 as a base.

Surface Modification of Graphitic Mesoporous Carbon Adsorbent by Chemical Oxidation for Removal of Basic Dye from Aqueous Solution

2015 ◽  
Vol 1107 ◽  
pp. 365-370 ◽  
Author(s):  
Salasiah Endud ◽  
Nur Izzatie Hannah Razman
Keyword(s):  
Aqueous Solution ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Carbon Adsorbent ◽  
Casting Process ◽  
Solution Concentration ◽  
Chemical Oxidation ◽  
Bet Surface Area ◽  
Adsorption Parameters ◽  
Type Iv

A graphitic mesoporous carbon-based material (GMC) was prepared using a nano-casting process by using SBA-15 as a hard template and sucrose as a carbon precursor. Modification of GMC was carried out by chemical oxidation with nitric acid in order to generate surface functionalities. The oxidized GMC material was then used as adsorbent for Basic Red 2 (BR2) in aqueous solutions. The morphology, pore structure, and surface functional groups of GMC samples were evaluated by field emission scanning electron microscopy (FESEM), Brunauer-Emmett-Teller method (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Boehm titration. N2 adsorption-desorption analysis revealed a type IV isotherm characteristic of mesoporous materials with BET surface area approximately 1000 m2g-1 and pore volume 0.9 cm3g-1. The effects of different adsorption parameters such as initial pH, initial dye aqueous solution concentration and temperature on BR2 removal were investigated. After modification, the BET surface area slightly decreased but the adsorption capacity of BR2 increased with optimum adsorption in 200 ppm initial concentration, pH of 10 at 60 °C.

scholarly journals Preparation of spherical aminopropyl-functionalized MCM-41 and its application in removal of Pb(II) ion from aqueous solution

2019 ◽  
Vol 8 (1) ◽  
pp. 275-284 ◽  
Author(s):  
Yi Lin ◽  
Jinjia Xu ◽  
Bhosale Sanjana Sudhakar ◽  
Junjie Gu ◽  
Ruoyu Hong
Keyword(s):  
Aqueous Solution ◽  
Mesoporous Silica ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
High Specific Surface Area ◽  
Synthesis Methods ◽  
Silica Microspheres ◽  
Mesoporous Silica Microspheres ◽  
Mcm 41

Abstract Mesoporous silica microspheres were prepared by the polymerization-induced colloid aggregation (PICA) and pseudomorphic synthesis methods. The prepared microspheres have high specific surface area and MCM-41 type structure. In the PICA process, acidic silica sol was utilized as silica source and the effect of molar ration (formaldehyde/urea) was investigated. Moreover, the influences of reaction time and temperature were also studied. The specific surface area of porous and mesoporous silica microspheres were 186.4 m2/g and 900.4 m2/g, respectively. The materials were characterized by SAXS, FTIR, SEM, TEM and nitrogen sorption measurements. The prepared silica microspheres were functionalized by (3-Aminopropyl)triethoxysilane and then used to remove the lead from aqueous solution. The result indicates that the grafted silica microspheres have rapid adsorption capacity and good reproducibility. The adsorption data was fitted well with the Langmuir isotherm model, and the maximum adsorption capacities for MCM-41 silica microspheres were 102.7 mg/g.

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