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Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide
Pei, Zhiguo; Li, Lingyun; Sun, Lixiang; Zhang, Shuzhen; Shan, Xiao-quan; Yang, Shuang; Wen, Bei; Pei, ZG
2013
Source PublicationCARBON
Volume51Pages:156-163
AbstractAdsorption of 1,2,4-trichlorobenzene (TCB), 2,4,6-trichlorophenol (TCP), 2-naphthol and naphthalene (NAPH) on graphene (G) and graphene oxide (GO) was investigated using a batch equilibration method and micro-Fourier transform infrared spectroscopy. All adsorption isotherms of four aromatics on G and GO were nonlinear, indicating that except for hydrophobic interaction, some specific interactions were involved in adsorption. For G, four aromatics had similar adsorption capacity at pH 5.0 in despite of their different chemical properties. A series of pH-dependent experimental results showed that 2-naphthol had higher adsorption capacity on G at alkaline pH than that at acidic pH. Theoretical calculation ascribed this to higher pi-electron density of anionic 2-naphthol than that of neutral 2-naphthol, which facilitated the pi-pi interaction formation with G. For GO, the adsorption affinity of four aromatics increased in the order: NAPH < TCB < TCP < 2-naphthol. FTIR results revealed that TCB, TCP and 2-naphthol were adsorbed on G mainly via pi-pi interaction. In contrast, high adsorption of TCP and 2-naphthol on GO was attributed to the formation of H-bonding between hydroxyl groups of TCP and 2-naphthol and O-containing functional groups on GO. (C) 2012 Elsevier Ltd. All rights reserved.
Department环境化学与生态毒理学国家重点实验室
Indexed BySCI
WOS IDWOS:000311005300018
Citation statistics
Cited Times:206[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/7557
Collection环境化学与生态毒理学国家重点实验室
Corresponding AuthorPei, ZG
Recommended Citation
GB/T 7714
Pei, Zhiguo,Li, Lingyun,Sun, Lixiang,et al. Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide[J]. CARBON,2013,51:156-163.
APA Pei, Zhiguo.,Li, Lingyun.,Sun, Lixiang.,Zhang, Shuzhen.,Shan, Xiao-quan.,...&Pei, ZG.(2013).Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide.CARBON,51,156-163.
MLA Pei, Zhiguo,et al."Adsorption characteristics of 1,2,4-trichlorobenzene, 2,4,6-trichlorophenol, 2-naphthol and naphthalene on graphene and graphene oxide".CARBON 51(2013):156-163.
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