One-pot synthesis of Aluminum-containing ordered mesoporous silica MCM-41 using coal fly ash for phosphate adsorption

Li, Dandan; Min, Hongyang; Xu, Jiang; Ran, Xianqiang; Zou, Liyin; Fan, Jianwei

doi:10.1016/j.jcis.2013.04.018

Cited by 87 publications

(39 citation statements)

References 38 publications

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“…Several studies have been carried out to synthesize SBA-15 with the same properties [5-8, 10, 13]. However, in order to minimize costs, various silicon sources, organic and inorganic, including industrial waste have been used with promising results [13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

SBA-15 synthesis from sodium silicate prepared with sand and sodium hydroxide

Lázaro

Rodríguez-Valadéz

López

et al. 2020

Mater. Res. Express

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In the industry, sodium carbonate is used to prepare sodium silicate; however, this process generates great volumes of CO 2 . In this work, sodium hydroxide has been proposed to prepare sodium silicate using natural sand. Two experimental variables were considered, sodium hydroxide concentration and temperature to prepare sodium silicate. Results show the formation of sodium silicate with a NaOH:sand ratio = 1.1 at 550°C. Moreover, an economical revision was achieved to compare costs of sodium silicate with sodium hydroxide and sodium carbonate. The use of sodium hydroxide permits to decrease CO 2 emissions generated in the decomposition of sodium carbonate. Additionally, the sodium silicate prepared herein was used to synthesize a zeolite type material, SBA-15. SBA-15 obtained has similar characteristics than the commercial mesoporous material. The use of sodium silicate prepared with non-pure sand for preparing mesoporous materials is an economical and friendly environmental alternative.

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Section: Introductionmentioning

confidence: 99%

SBA-15 synthesis from sodium silicate prepared with sand and sodium hydroxide

Lázaro

Rodríguez-Valadéz

López

et al. 2020

Mater. Res. Express

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“…For instance, using rice husk ash for the synthesis of SBA-15, MCM-41, and MCM-48 has been reported previously [23–25]. The use of mesoporous materials from industrial solid waste, such as coal combustion waste fly ash, as a silica source has also attracted attention due to economic advantages [26, 27]. Silica fume, a very fine amorphous silica powder, is obtained as a by-product during metal production processes.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Heavy Metal Adsorption of Mesoporous Silica Materials Prepared by Microwave Synthesis

Zhu

Wang

et al. 2017

Nanoscale Res Lett

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Mesoporous silica materials (MSMs) of the MCM-41 type were rapidly synthesized by microwave heating using silica fume as silica source and evaluated as adsorbents for the removal of Cu2+, Pb2+, and Cd2+ from aqueous solutions. The effects of microwave heating times on the pore structure of the resulting MSMs were investigated as well as the effects of different acids which were employed to adjust the solution pH during the synthesis. The obtained MCM-41 samples were characterized by nitrogen adsorption–desorption analyses, X-ray powder diffraction, and transmission electron microscopy. The results indicated that microwave heating method can significantly reduce the synthesis time of MCM-41 to 40 min. The MCM-41 prepared using citric acid (c-MCM-41(40)) possessed more ordered hexagonal mesostructure, higher pore volume, and pore diameter. We also explored the ability of c-MCM-41(40) for removing heavy metal ions (Cu2+, Pb2+, and Cd2+) from aqueous solution and evaluated the influence of pH on its adsorption capacity. In addition, the adsorption isotherms were fitted by Langmuir and Freundlich models, and the adsorption kinetics were assessed using pseudo-first-order and pseudo-second-order models. The intraparticle diffusion model was studied to understand the adsorption process and mechanism. The results confirmed that the as-synthesized adsorbent could efficiently remove the heavy metal ions from aqueous solution at pH range of 5–7. The adsorption isotherms obeyed the Langmuir model, and the maximum adsorption capacities of the adsorbent for Cu2+, Pb2+, and Cd2+ were 36.3, 58.5, and 32.3 mg/g, respectively. The kinetic data were well fitted to the pseudo-second-order model, and the results of intraparticle diffusion model showed complex chemical reaction might be involved during adsorption process.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-017-2070-4) contains supplementary material, which is available to authorized users.

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“…Alternatively, the mesocellular foams (MCF) have also been the compelling representative mesoporous silica due to the handily achievable large spherical cell sizes (Schmidt-Winkel et al 1999;Dana and Sayari 2011). The addition of organic groups by grafting organosiloxane precursors onto the surface of the pores of mesoporous silicas results in functional mesoporous hybrid materials (Antoschuk and Jaroniec 2002;Bibby and Mercier 2002;Hossain and Mercier 2002;Walkarius et al 2002;Yoshitake et al 2002;Yee et al 2003;Messina et al 2006;Li et al 2008Li et al , 2013Li et al , 2015Idris 2015;Bordoni et al 2015;Yu et al 2015;Zhang et al 2007;Wu et al 2010;Maretto et al 2015;Coll et al 2009;Sun et al 2015;Kandula and Jeevanandam 2015). These organic-inorganic hybrid materials have been reported to exhibit improved sorption properties toward heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Aminopropyl-grafted various silica mesostructures for adsorption of molybdenum ions from Re-containing effluent

et al. 2016

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Four different silica mesostructures, SBA-15 with mesopore size (8.5 nm), SBA-15 with mesopore size (10.3 nm), mesocellular foam (MCF) with uniform cell size (33.2 nm), and MCF with bimodal mesoporosity, were grafted with aminopropyl groups and used for selective recovery of Mo(VI) from Re(VII)-containing effluent. Adsorption isotherms and mechanism of Mo(VI) adsorption on these materials were studied. The adsorbed complexes of Mo(VI) could be formed by ion exchange process or/and by chelation reaction. This study shows a new approach for fractional recovery and separation of Mo(VI) from Re(VII) by using amino-modified SBA-15-type mesoporous silica.

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One-pot synthesis of Aluminum-containing ordered mesoporous silica MCM-41 using coal fly ash for phosphate adsorption

Cited by 87 publications

References 38 publications

SBA-15 synthesis from sodium silicate prepared with sand and sodium hydroxide

SBA-15 synthesis from sodium silicate prepared with sand and sodium hydroxide

Investigating the Heavy Metal Adsorption of Mesoporous Silica Materials Prepared by Microwave Synthesis

Aminopropyl-grafted various silica mesostructures for adsorption of molybdenum ions from Re-containing effluent

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