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Materials (Basel)

Title:		Synthesis and Adsorption Performance of a Hierarchical Micro-Mesoporous Carbon for Toluene Removal under Ambient Conditions
Author(s):		An Z; Kong S; Zhang W; Yuan M; An Z; Chen D;
Address:		"School of Chemical and Environmental Engineering, Shanghai Institute of Tech nology, Shanghai 201418, China. College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China. Institute of Foreign Languages, Shanghai DianJi University, Shanghai 201306, China"
Journal Title:		Materials (Basel)
Year:		2020
Volume:		20200205
Issue:		3
Page Number:		-
DOI:		10.3390/ma13030716
ISSN/ISBN:		1996-1944 (Print) 1996-1944 (Electronic) 1996-1944 (Linking)
Abstract:		"Ordered mesoporous carbons (OMCs) were synthesized in this study through a soft template method and then activated by employing different mass ratios of KOH/OMCs to obtain KOH-activated ordered mesoporous carbons (KOMCs) with hierarchical pore structures. To verify the adsorption capacity, the KOMCs have been subjected to toluene emission-reduction experiments. The KOMCs were characterized by TEM, XRD, N(2) adsorption-desorption isotherms, and Raman spectroscopy. The pore structure of OMCs was found to be effectively optimized by the activation with KOH, with the BET-area and total pore volume values reaching as high as 2661 m(2) g(-1) and 2.14 cm(3) g(-1) respectively. Then, the dynamic adsorption capacity of toluene on KOMCs was investigated via breakthrough curves, which can be well described by the Yoon and Nelson (Y-N) model. The dynamic adsorption capacities of toluene exhibit the following order: OMC < KOMC-1 < KOMC-5 < KOMC-3. The sample activated by KOH/OMC with a mass ratio of 3:1 (KOMC-3) demonstrated the highest toluene adsorption capacity of 355.67 mg g(-1), three times higher in comparison with the untreated carbon (104.61 mg g(-1)). The modified hierarchical porous carbons also exhibited good recyclability. The KOMCs with rich pore structure, high toluene adsorption capacity, and superior reusability thus display a huge potential for volatile organic compound (VOC) elimination"
Keywords:		activation dynamic adsorption hierarchical pores ordered mesoporous carbons toluene;
Notes:		"PubMed-not-MEDLINEAn, Zhaohui Kong, Shulin Zhang, Wenwen Yuan, Ming An, Zhihao Chen, Donghui eng Switzerland 2020/02/09 Materials (Basel). 2020 Feb 5; 13(3):716. doi: 10.3390/ma13030716"