The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical alpha-Fe2O3 structures exposed by (001) and non-(001) planes

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 青海盐湖研究所知识仓储

	The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical alpha-Fe2O3 structures exposed by (001) and non-(001) planes
	Liu, Zhong 1,4; Yu, Ruitao 2; Dong, Yaping 1; Li, Wu 1,4; Lv, Baoliang 3
刊名	CHEMICAL ENGINEERING JOURNAL
	2017-02-01
卷号	309 页码:815-823
关键词	Alpha-fe2o3 Plane Cr(Vi) Adsorption Mechanism
文献子类	Article
英文摘要	Two kinds of 3D hierarchical alpha-Fe2O3 nanoparticles, flower-like structure with the (0 0 1) plane predominantly exposed on petals and urchin-like structure with nanorods grown along [001] direction, have been synthesized under the influence of glycerol by a facile hydrothermal method. It is proposed that the Fe(III)-glycerol micro-reaction units that selectively adsorb to (0 0 1) or other planes result in different morphologies. The adsorption of Cr(VI) from aqueous solution onto these alpha-Fe2O3 nanoparticles showed that the removal efficiency up to 98.5% and 88.8% in 25 mg/L Cr(VI) solution, and the adsorption capacity reaches to 34.4 mg/g and 26.0 mg/g without pH adjustment. The adsorption kinetic is well described by the pseudo-second-order model and the Cr(VI) adsorption on the adsorbent agrees well with the Langmuir model. Lower surface areas and more excellent adsorption property associates with the chemisorption of Cr(VI) onto alpha-Fe2O3 (0 01), which is achieved by coordination between Cr(VI) and doubly or triply coordinated hydroxyl groups on alpha-Fe2O3 surface. (C) 2016 Elsevier B.V. All rights reserved.
WOS关键词	RESPONSE-SURFACE METHODOLOGY ; AQUEOUS-SOLUTION ; HOLLOW SPHERES ; REMOVAL ; OPTIMIZATION ; WATER ; NANOPARTICLES ; NANOFIBERS ; SORPTION ; NI2+
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000389166400084
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/6175]
专题	青海盐湖研究所_青海盐湖研究所知识仓储青海盐湖研究所_盐湖资源综合利用工程技术中心青海盐湖研究所_盐湖资源与化学实验室
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Peoples R China 2.Chinese Acad Sci, Northwest Plateau Biol Inst, Key Lab Tibetan Med Res, Xining 810008, Peoples R China 3.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China 4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
推荐引用方式 GB/T 7714	Liu, Zhong,Yu, Ruitao,Dong, Yaping,et al. The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical alpha-Fe2O3 structures exposed by (001) and non-(001) planes[J]. CHEMICAL ENGINEERING JOURNAL,2017,309:815-823.
APA	Liu, Zhong,Yu, Ruitao,Dong, Yaping,Li, Wu,&Lv, Baoliang.(2017).The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical alpha-Fe2O3 structures exposed by (001) and non-(001) planes.CHEMICAL ENGINEERING JOURNAL,309,815-823.
MLA	Liu, Zhong,et al."The adsorption behavior and mechanism of Cr(VI) on 3D hierarchical alpha-Fe2O3 structures exposed by (001) and non-(001) planes".CHEMICAL ENGINEERING JOURNAL 309(2017):815-823.