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Preparation of alpha-Fe2O3 hollow spheres, nanotubes, nanoplates and nanorings as highly efficient Cr(VI) adsorbents
Liu, Zhong1; Yu, Ruitao2; Dong, Yaping1; Li, Wu1; Zhou, Wuzong3
2016
Source PublicationRSC ADVANCES
Volume6Issue:86Pages:82854-82861
SubtypeArticle
Abstractalpha-Fe2O3 nanoparticles with different morphologies, such as hollow spheres, nanotubes with a limited amount of the {0001} plane exposed, and nanoplates and nanorings with the {0001} plane predominantly exposed, have been synthesised by using NaH2PO4 and urea in a facile hydrothermal method. The mechanism of the morphology evolution from hollow sphere to nanoring has been investigated. It is proposed that the polymerisation of Fe3+/H2PO4- plays an important role in the formation of these morphologies. The adsorption of Cr(VI) from aqueous solution onto these alpha-Fe2O3 nanoparticles showed that the alpha-Fe2O3 with nanoring morphology has the highest removal efficiency, and the adsorption capacity reached 16.9 mg g(-1). These results indicate that the adsorption mechanism of Cr(VI) onto hematite nanoparticles is a chemisorption process through doubly and triply coordinated hydroxyl groups on the outer surface of alpha-Fe2O3.
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordFACILE SYNTHESIS ; CR VI ; ADSORPTION ; NANOPARTICLES ; REMOVAL ; NANOSTRUCTURES ; ANIONS
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000384155100048
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6363
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
盐湖资源与化学实验室
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China
2.Chinese Acad Sci, Northwest Plateau Biol Inst, Xining 810008, Peoples R China
3.Univ St Andrews, Sch Chem, EaStChem, St Andrews KY16 9ST, Fife, Scotland
Recommended Citation
GB/T 7714
Liu, Zhong,Yu, Ruitao,Dong, Yaping,et al. Preparation of alpha-Fe2O3 hollow spheres, nanotubes, nanoplates and nanorings as highly efficient Cr(VI) adsorbents[J]. RSC ADVANCES,2016,6(86):82854-82861.
APA Liu, Zhong,Yu, Ruitao,Dong, Yaping,Li, Wu,&Zhou, Wuzong.(2016).Preparation of alpha-Fe2O3 hollow spheres, nanotubes, nanoplates and nanorings as highly efficient Cr(VI) adsorbents.RSC ADVANCES,6(86),82854-82861.
MLA Liu, Zhong,et al."Preparation of alpha-Fe2O3 hollow spheres, nanotubes, nanoplates and nanorings as highly efficient Cr(VI) adsorbents".RSC ADVANCES 6.86(2016):82854-82861.
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