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RSC Adv


Title:Dynamic adsorption of toluene on amino-functionalized SBA-15 type spherical mesoporous silica
Author(s):Zhou H; Gao S; Zhang W; An Z; Chen D;
Address:"School of Chemical and Environmental Engineering, Shanghai Institute of Technology Haiquan Road 100 201418 Shanghai PR China 1019138856@qq.com. College of Environmental Science and Engineering, Donghua University North Renmin Road 2999 201620 Shanghai PR China chendhsit@163.com"
Journal Title:RSC Adv
Year:2019
Volume:20190304
Issue:13
Page Number:7196 - 7202
DOI: 10.1039/c8ra08605b
ISSN/ISBN:2046-2069 (Electronic) 2046-2069 (Linking)
Abstract:"Amino-functionalized spherical mesoporous silica (ASMS) materials were successfully prepared via a convenient treatment method by using 3-aminopropyltrimethoxysilane (APTES), which was used in different concentrations in the process of spherical mesoporous silica (SMS) synthesis. The adsorption performances of ASMS were evaluated by taking toluene as a simulated pollutant and the adsorption mechanism was also studied. A variety of characterization methods were adopted, including scanning electron microscopy, small-angle X-ray diffraction and Fourier-transform infrared spectroscopy techniques and nitrogen adsorption-desorption analyses, which led to a better understanding of the performance of the materials. It was found that the SMS has a good adaptability due to the amino functionality, the pore structure still remains in the modified samples even when the mass ratio of APTES/TEOS is up to 3, and the chemical properties of the material surface are significantly improved by the amino functionality. The results show that the capacities of the toluene adsorption follow the order of SMS < ASMS-1 < ASMS-3 < ASMS-2. ASMS-2 has the highest toluene adsorption capacity (98.1 mg g(-1)) and the saturated adsorbent can be easily regenerated by thermal desorption, which has a stable adsorption capacity after 4 adsorption cycles. These experimental data indicated that amino functionalization could affect both the pore structure and surface chemical properties of SMS, making ASMS a promising material for the reduction of industrial volatile organic compound emissions in air treatment"
Keywords:
Notes:"PubMed-not-MEDLINEZhou, Huiping Gao, Shaomin Zhang, Wenwen An, Zhaohui Chen, Donghui eng England 2019/03/04 RSC Adv. 2019 Mar 4; 9(13):7196-7202. doi: 10.1039/c8ra08605b. eCollection 2019 Mar 1"

 
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