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Sci Rep

Title:		Mesoporous graphene adsorbents for the removal of toluene and xylene at various concentrations and its reusability
Author(s):		Lim ST; Kim JH; Lee CY; Koo S; Jerng DW; Wongwises S; Ahn HS;
Address:		"Department of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea. Department of Energy and Chemical Engineering, Incheon National University, Incheon, Republic of Korea. School of Energy System Engineering, Chung-Ang University, Seoul, Republic of Korea. Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, Bangkok, Thailand. Department of Mechanical Engineering, Incheon National University, Incheon, Republic of Korea. hsahn@inu.ac.kr"
Journal Title:		Sci Rep
Year:		2019
Volume:		20190729
Issue:		1
Page Number:		10922 -
DOI:		10.1038/s41598-019-47100-z
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"As novel technologies have been developed, emissions of gases of volatile organic compounds (VOCs) have increased. These affect human health and are destructive to the environment, contributing to global warming. Hence, regulations on the use of volatile organic compounds have been strengthened. Therefore, powerful adsorbents are required for volatile organic compounds gases. In this study, we used graphene powder with a mesoporous structure to adsorb aromatic compounds such as toluene and xylene at various concentrations (30, 50, 100 ppm). The configuration and chemical composition of the adsorbents were characterized using scanning electron microscopy (SEM), N(2) adsorption-desorption isotherm measurements, and X-ray photoelectron spectroscopy (XPS). The adsorption test was carried out using a polypropylene filter, which contained the adsorbents (0.25 g), with analysis performed using a gas detector. Compared to graphite oxide (GO) powder, the specific surface area of thermally expanded graphene powder (TEGP800) increased significantly, to 542 m(2) g(-1), and its chemical properties transformed from polar to non-polar. Thermally expanded graphene powder exhibits high adsorption efficiency for toluene (92.7-98.3%) and xylene (96.7-98%) and its reusability is remarkable, being at least 91%"
Keywords:
Notes:		"PubMed-not-MEDLINELim, Sun Taek Kim, Ji Hoon Lee, Chang Yeon Koo, Sangmo Jerng, Dong-Wook Wongwises, Somchai Ahn, Ho Seon eng Research Support, Non-U.S. Gov't England 2019/07/31 Sci Rep. 2019 Jul 29; 9(1):10922. doi: 10.1038/s41598-019-47100-z"