Facet-Dependent Cr(VI) Adsorption of Hematite Nanocrystals

Environmental Science & Technology
Xiaopeng HuangLizhi Zhang

Abstract

In this study, the adsorption process of Cr(VI) on the hematite facets was systematically investigated with synchrotron-based Cr K-edge extended X-ray absorption fine structure (EXAFS) spectroscopy, in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, density-functional theory calculation, and surface complexation models. Structural model fitting of EXAFS spectroscopy suggested that the interatomic distances of Cr-Fe were, respectively, 3.61 Å for the chromate coordinated hematite nanoplates with exposed {001} facets, 3.60 and 3.30 Å for the chromate coordinated hematite nanorods with exposed {001} and {110} facets, which were characteristic of inner-sphere complexation. In situ ATR-FTIR spectroscopy analysis confirmed the presence of two inner-sphere surface complexes with C3ν and C2ν symmetry, while the C3ν and C2ν species were assigned to monodentate and bidentate inner-sphere surface complexes with average Cr-Fe interatomic distances of 3.60 and 3.30 Å, respectively. On the basis of these experimental and theoretical results, we concluded that HCrO4(-) as dominated Cr(VI) species was adsorbed on {001} and {110} facets in inner-sphere monodentate mononuclear and bidentate binuclear configu...Continue Reading

References

Sep 18, 1999·Journal of Colloid and Interface Science·D PeakD L Sparks
Apr 2, 2003·Environmental Science & Technology·Andreas Voegelin, Stephan J Hug
Oct 4, 2003·Environmental Science & Technology·L Dupont, E Guillon
Apr 16, 2005·Molecular and Cellular Biology·Elizabeth Peterson-RothAnatoly Zhitkovich
Mar 8, 2008·Science·Svetlana V Yanina, Kevin M Rosso
Jun 1, 1987·Environmental Science & Technology·J M ZacharaC T Resch
Aug 20, 2010·Inorganic Chemistry·Liqiao ChenMingmei Wu
Apr 1, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Maike Lübbe, Wolfgang Moritz
Feb 10, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Chang-Yan CaoWei-Guo Song
May 15, 2012·Environmental Science & Technology·Chad P Johnston, Maria Chrysochoou

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Citations

Mar 31, 2017·Environmental Science & Technology·Xiaojing HouLizhi Zhang
Mar 3, 2018·Geochemical Transactions·James D KubickiNefeli Bompoti
Oct 6, 2020·Journal of Environmental Quality·Xiangzhi Li, Erping Bi
Sep 7, 2020·The Science of the Total Environment·Meiqing ShiYangjin Wei
Nov 24, 2018·Journal of Colloid and Interface Science·Amanda W LounsburyJulie B Zimmerman
Jan 27, 2021·Environmental Science and Pollution Research International·Tingting ZhouWei Chen
Oct 31, 2020·Environmental Science and Pollution Research International·Min YangWeilin Guo
Apr 8, 2021·Environmental Science & Technology·Xiaoming WangMengqiang Zhu
May 12, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Shiwen HuTongxu Liu
Jun 6, 2021·The Science of the Total Environment·Na ChenLizhi Zhang
Jun 19, 2021·Chemical Reviews·Jianzhi HuangHuichun Zhang
Jul 8, 2021·Journal of Hazardous Materials·Inna KurganskayaAndreas Luttge
Aug 13, 2021·The Science of the Total Environment·Yu LiangWenfeng Tan
Aug 10, 2019·Environmental Science & Technology·Xiaopeng HuangKevin M Rosso
Nov 9, 2019·Environmental Science & Technology·Wenjuan LiaoDong Cheng
Aug 24, 2019·Environmental Science & Technology·Wenwen CuiKevin M Rosso
Mar 16, 2019·Chemical Reviews·Songcan WangLianzhou Wang
Aug 17, 2021·Journal of Hazardous Materials·Amal Kanti DebMohammad Mahmudur Rahman
Jun 27, 2019·Environmental Science & Technology·Yue HuLizhi Zhang
Nov 23, 2019·Inorganic Chemistry·Meirong ZongKevin M Rosso
Mar 6, 2018·Environmental Science & Technology·Dedong HeYongming Luo
May 8, 2019·Environmental Science & Technology·Nefeli Maria BompotiMichael L Machesky
Dec 31, 2020·Environmental Science & Technology·Chen TianLiyuan Chai

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