The effect of temperatures on the synergistic effect between a magnetic field and functionalized graphene oxide-carbon nanotube composite for Pb2+ and phenol adsorption

doi:10.1155/2018/9167938

	The effect of temperatures on the synergistic effect between a magnetic field and functionalized graphene oxide-carbon nanotube composite for Pb2+ and phenol adsorption
	Jiang, Li-li 1; Yu, Hai-Tao 2; Pei, Lie-fei 1; Hou, Xin-gang 1
刊名	Journal of Nanomaterials
	2018
卷号	2018
关键词	Activation energy Adsorption Graphene Magnetic fields Multiwalled carbon nanotubes (MWCN) Nanotubes Phenols Water treatment Adsorption properties Effect of temperature Freundlich isotherm model Functionalized graphene Increased temperature Increasing temperatures Intramolecular energy Pseudo-second-order kinetic models
ISSN号	16874110
DOI	10.1155/2018/9167938
英文摘要	The effect of temperature on scale inhibition and adsorption properties for Pb2+ and phenol was studied under the synergistic effect of the magnetic field and the adsorbent. The sulfhydryl and amino-modified graphene oxide/oxidized multiwalled carbon nanotubes (NH2-SH-GO/o-MWCNTs) were synthesized and applied as the adsorbent. Additionally, changes in pH, conductivity, molecular activation energy, the relative variation of intramolecular energy and the relative variation in the proportion of free water, and adsorption capacity of the adsorbent were studied under different temperatures of circulating water. The relative variation of the proportion of free water increased with the increasing temperatures. The above results indicated that higher temperature would be detrimental to scale inhibition. The higher the temperatures, the lower the intramolecular energies. And the more stable molecules are formed in the circulating water. Thus, the results reduced the tendency to scale formation. The increased temperatures promoted the adsorption capacity of the adsorbent for Pb2+ and phenol. The adsorption process for Pb2+ and phenol conformed to the pseudo-second-order kinetic model and Freundlich isotherm model under the synergistic effect of magnetic field and NH2-SH-GO/MWCNTs. After five cycles, the adsorption capacities of the adsorbent for Pb2+ and phenol separately decreased by 59.86% and 76.36%. The aforementioned results reveal that temperatures can promote the adsorption process for Pb2+ and phenol, and the synergistic effect between magnetic field and the adsorbent has a potential application for water treatment. © 2018 Li-li Jiang et al.
资助项目	Lanzhou University of Technology[061702]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	Hindawi Limited, 410 Park Avenue, 15th Floor, 287 pmb, New York, NY 10022, United States
WOS记录号	WOS:000441599900001
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114471]
专题	材料科学与工程学院
通讯作者	Jiang, Li-li
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Technol, Langongping Rd, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ, Hosp 1, Dept Med Lab, 1 Donggang Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Li-li,Yu, Hai-Tao,Pei, Lie-fei,et al. The effect of temperatures on the synergistic effect between a magnetic field and functionalized graphene oxide-carbon nanotube composite for Pb2+ and phenol adsorption[J]. Journal of Nanomaterials,2018,2018.
APA	Jiang, Li-li,Yu, Hai-Tao,Pei, Lie-fei,&Hou, Xin-gang.(2018).The effect of temperatures on the synergistic effect between a magnetic field and functionalized graphene oxide-carbon nanotube composite for Pb2+ and phenol adsorption.Journal of Nanomaterials,2018.
MLA	Jiang, Li-li,et al."The effect of temperatures on the synergistic effect between a magnetic field and functionalized graphene oxide-carbon nanotube composite for Pb2+ and phenol adsorption".Journal of Nanomaterials 2018(2018).