Annealing temperature effect on 3D hierarchically porous NiO/Ni for removal of trace hexavalent chromium

doi:10.1016/j.matchemphys.2019.122140

IMR OpenIR

	Annealing temperature effect on 3D hierarchically porous NiO/Ni for removal of trace hexavalent chromium
	Wang, Zhifei 1,3; Shen, Qianqian 1,2; Xue, Jinbo 1,2; Jia, Husheng 1,3; Xu, Bingshe 1,2; Liu, Xuguang 1; Qi, Li 4
通讯作者	Xue, Jinbo(xuejinbo@tyut.edu.cn) ; Jia, Husheng(jia_husheng@126.com)
	2020-01-15
发表期刊	MATERIALS CHEMISTRY AND PHYSICS
ISSN	0254-0584
卷号	240 页码:10
摘要	Three-dimensional (3D) hierarchically porous NiO/Ni composites were fabricated by hydrothermal method combined with subsequent annealing process. First, nickel hydroxide (Ni(OH)(2)) nanosheets were synthesized on flexible and porous nickel foam to form Ni(OH)(2)/Ni. Second, 3D porous nickel oxide (NiO) nanosheets grown on nickel substrate, named NiO/Ni, were obtained by thermal decomposition of Ni(OH)(2)/Ni in air at 400-650 degrees C for 3 h. The prepared samples were applied as adsorbents for the removal of hexavalent chromium (Cr(VI)) from aqueous solutions and characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and nitrogen adsorption and desorption to analyze their structures and compositions. NiO nanosheets grow on the 3D nickel foam provide more active sites and the large connected macropores are favorable to flow of solution. Numerous mesopores and micropores emerged on NiO nanosheets after thermal calcination, leading to high surface area favorable to adsorption of Cr(VI) ions. The results show that NiO/Ni annealed at 400 degrees C provides the maximum specific surface area (22 m(2)g(-1)) and best removal capacity (25.94 mg g(-1)) at pH 4 with excellent recyclling performance. The pseudo-first-order kinetic fitting suggests the physical adsorption of Cr(VI) on NiO/Ni surface and the possible adsorption mechanism was investigated. Moreover, the effect of contact time, initial concentration of Cr(VI), pH, and matrix anion were studied in detail.
关键词	Flexible basement Three dimensional hierarchical pore Hexavalent chromium Trace level Kinetic adsorption
资助者	Natural Science Foundation of China ; Natural Science Foundation of Shanxi Province ; Key Research and Development Program of Shanxi province ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi ; Shanxi Provincial Key Innovative Research Team in Science and Technology ; Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments ; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province
DOI	10.1016/j.matchemphys.2019.122140
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of China[21878257] ; Natural Science Foundation of China[51402209] ; Natural Science Foundation of China[21276220] ; Natural Science Foundation of Shanxi Province[201601D102020] ; Natural Science Foundation of Shanxi Province[201701D221083] ; Key Research and Development Program of Shanxi province[201603D121017] ; Key Research and Development Program of Shanxi province[201803D421079] ; Key Research and Development Program of Shanxi province[201803D31042] ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi[2016124] ; Shanxi Provincial Key Innovative Research Team in Science and Technology[201605D131045-10] ; Jiangsu Collaborative Innovation Center for Ecological Building Material and Environmental Protection Equipments ; Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000505100900053
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/136349
专题	中国科学院金属研究所
通讯作者	Xue, Jinbo; Jia, Husheng
作者单位	1.Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China 2.Taiyuan Univ Technol, Res Ctr Adv Mat Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China 3.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhifei,Shen, Qianqian,Xue, Jinbo,et al. Annealing temperature effect on 3D hierarchically porous NiO/Ni for removal of trace hexavalent chromium[J]. MATERIALS CHEMISTRY AND PHYSICS,2020,240:10.
APA	Wang, Zhifei.,Shen, Qianqian.,Xue, Jinbo.,Jia, Husheng.,Xu, Bingshe.,...&Qi, Li.(2020).Annealing temperature effect on 3D hierarchically porous NiO/Ni for removal of trace hexavalent chromium.MATERIALS CHEMISTRY AND PHYSICS,240,10.
MLA	Wang, Zhifei,et al."Annealing temperature effect on 3D hierarchically porous NiO/Ni for removal of trace hexavalent chromium".MATERIALS CHEMISTRY AND PHYSICS 240(2020):10.