Nanostructured micro/mesoporous graphene: removal performance of volatile organic compounds. Issue 23 (13th May 2022)

• Record Type: Journal Article
• Authors: Vo, Thi To Nguyen; Lim, Sun Taek; Kim, Ji Hoon; Shim, Gyu Hyeon; Kim, Koung Moon; Kweon, Boyeon; Kim, Miyeon; Lee, Chang Yeon; Ahn, Ho Seon
• Is Part Of: RSC advances. Volume 12:Issue 23(2022)
• Page Start: 14570
• Page End: 14577
• Publication Date: 2022-05-13
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra01275h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : An efficient strategy for the synthesis of highly porous TEGOs by an integrated thermochemical treatment. The formation of pore networks ranging from micro to mesopores, which is a remarkable reason for utilizing TEGO as a potential adsorbent. Abstract : In this study, we demonstrate an integrated synthesis strategy, which is conducted by the thermochemical process, consisting of pre- and post-activation by thermal treatment and KOH activation for the reduction of graphite oxide. A large number of interconnected pore networks with a micro/mesoporous range were constructed on a framework of graphene layers with a specific surface area of up to 1261 m 2 g −1 . This suggests a synergistic effect of thermally exfoliated graphene oxide (TEGO) on the removal efficiency of volatile organic compounds by generating pore texture with aromatic adsorbates such as benzene, toluene, and o -xylene (denoted as BTX) from an inert gaseous stream concentration of 100 ppm. As a proof of concept, TEGO, as well as pre- and post-activated TEGO, were used as adsorbents in a self-designed BTX gas adsorption apparatus, which exhibited a high removal efficiency of up to 98 ± 2%. The distinctive structure of TEGO has a significant effect on removal performance, which will greatly facilitate the strategy of efficient VOC removal configurations.