| Title: | Toluene and acetaldehyde removal from air on to graphene-based adsorbents with microsized pores |
| Author(s): | Kim JM; Kim JH; Lee CY; Jerng DW; Ahn HS; |
| Address: | "Innovation Center for Chemical Engineering, Incheon National University, Songdo 1(il)-dong, Yeonsu-gu, Incheon, Republic of Korea. Electronic address: jiminkim@inu.ac.kr. Department of Mechanical Engineering, Incheon National University, Songdo 1(il)-dong, Yeonsu-gu, Incheon, Republic of Korea. Electronic address: kimjiihoon123@inu.ac.kr. Energy and Chemical Engineering, Incheon National University, Songdo 1(il)-dong, Yeonsu-gu, Incheon, Republic of Korea. Electronic address: cylee@inu.ac.kr. School of Energy System Engineering, ChungAng University, 84 Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea. Electronic address: dwjerng@cau.ac.kr. Department of Mechanical Engineering, Incheon National University, Songdo 1(il)-dong, Yeonsu-gu, Incheon, Republic of Korea. Electronic address: hsahn@inu.ac.kr" |
| DOI: | 10.1016/j.jhazmat.2017.10.038 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Volatile organic compound (VOC) gases can cause harm to the human body with exposure over the long term even at very low concentrations (ppmv levels); thus, effective absorbents for VOC gas removal are an important issue. In this study, accordingly, graphene-based adsorbents with microsized pores were used as adsorbents to remove toluene and acetaldehyde gases at low concentrations (30ppm). Sufficient amounts of the adsorbents were prepared for use on filters and were loaded uniformly at 0.1-0.5g on a 50x50mm(2) area, to evaluate their adsorption features with low gas concentrations. The morphology and chemical composition of the adsorbents were characterized using scanning electron microscopy, N(2) adsorption-desorption isotherms, X-ray photoelectron spectroscopy, and Raman spectroscopy. Microwave irradiation and heat treatment near 800 degrees C under KOH activation resulted in enlargement of the pristine graphene surface and its specific surface area; maximum volume capacities of 3510m(3)/g and 630m(3)/g were observed for toluene and acetaldehyde gas. The high removal efficiency for toluene (98%) versus acetaldehyde (30%) gas was attributed to pi-pi interactions between the pristine graphene surface and toluene molecules" |
| Keywords: | Acetaldehyde Adsorbent Graphene Toluene VOC gas adsorption; |
| Notes: | "PubMed-not-MEDLINEKim, Ji Min Kim, Ji Hoon Lee, Chang Yeon Jerng, Dong Wook Ahn, Ho Seon eng Netherlands 2017/11/13 J Hazard Mater. 2018 Feb 15; 344:458-465. doi: 10.1016/j.jhazmat.2017.10.038. Epub 2017 Oct 19" |
