Adsorption of VOCs on reduced graphene oxide

Journal of Environmental Sciences (China)
Lian YuDaiqi Ye

Abstract

A modified Hummer's method was adopted for the synthesis of graphene oxide (GO) and reduced graphene oxide (rGO). It was revealed that the modified method is effective for the production of GO and rGO from graphite. Transmission electron microscopy (TEM) images of GO and rGO showed a sheet-like morphology. Because of the presence of oxygenated functional groups on the carbon surface, the interlayer spacing of the prepared GO was higher than that of rGO. The presence of OH and CO groups in the Fourier transform infrared spectra (FTIR) spectrum and G-mode and 2D-mode in Raman spectra confirmed the synthesis of GO and rGO. rGO (292.6m2/g) showed higher surface area than that of GO (236.4m2/g). The prepared rGO was used as an adsorbent for benzene and toluene (model pollutants of volatile organic compounds (VOCs)) under dynamic adsorption/desorption conditions. rGO showed higher adsorption capacity and breakthrough times than GO. The adsorption capacity of rGO for benzene and toluene was 276.4 and 304.4mg/g, respectively. Desorption experiments showed that the spent rGO can be successfully regenerated by heating at 150.0°C. Its excellent adsorption/desorption performance for benzene and toluene makes rGO a potential adsorbent for V...Continue Reading

Citations

Dec 12, 2018·Environmental Science and Pollution Research International·Kobra Rahbar ShamskarSahar Baniyaghoob
Sep 24, 2020·Environmental Science and Pollution Research International·Ömer ŞahinMehmet Şakir Ece
Sep 12, 2018·Environmental Science and Pollution Research International·Tiago José Marques FragaMaurício Alves da Motta
Apr 12, 2019·Environmental Science and Pollution Research International·Junchao ZhuLiqing Li
Nov 2, 2018·Journal of Hazardous Materials·Guangxin ZhangZaher Hashisho
Dec 15, 2020·Journal of Hazardous Materials·Zhicheng ZhuangJingchun Tang
Jul 2, 2021·Scientific Reports·Charalampos AndroulidakisCostas Galiotis
Aug 28, 2020·Chemical Reviews·Zhuxing SunYun Hang Hu

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