Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study
Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study
复制标题
生物磁性纳米粒子修复 Cr(VI)：X 射线磁性圆二色性研究
DOI：
10.1063/1.3249578
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发表时间：
2009
期刊：
影响因子：
--
通讯作者：
N. Telling
中科院分区：
文献类型：
--
作者：
N. Telling
生物磁性纳米颗粒对Cr（VI）的修复：X射线磁性圆二色性研究。D.告诉1，VS。科克1河S.切1、G.货车der Laan 1，2，C. I.皮尔斯1，R. A. D. Pattrick 1，E. Arenholz 3和J. R.劳埃德1地球，大气和环境科学学院，曼彻斯特大学，曼彻斯特M13 9 PL，英国磁光谱组，钻石光源，迪科，牛津郡，OX 11 0 DE，英国先进光源，劳伦斯伯克利国家实验室，伯克利，加利福尼亚州，美国生物合成磁铁矿用X射线吸收光谱和X射线磁性圆二色光谱研究了六价铬溶液对纳米（Fe 3 O 4）颗粒的影响。通过检查它们的磁性状态，铬阳离子被证明存在于磁铁矿尖晶石表面内的八面体网站上的三价形式。将有毒的Cr（VI）还原成稳定、无毒的形式（例如Cr 3+ -尖晶石层）的可能性使得生物来源的磁铁矿纳米颗粒成为Cr修复的有吸引力的候选者。PACS编号：91.25.fa; 87.64.kd; 89.60.- k; 91.62.Rt
Remediation of Cr(VI) by biogenic magnetic nanoparticles: An x-ray magnetic circular dichroism study N. D. Telling 1 , V. S. Coker 1 , R. S. Cutting 1 , G. van der Laan 1,2 , C. I. Pearce 1 , R. A. D. Pattrick 1 , E. Arenholz 3 , and J. R. Lloyd 1 School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK Magnetic Spectroscopy Group, Diamond Light Source, Didcot, Oxfordshire, OX11 0DE, UK Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Biologically synthesized magnetite (Fe 3 O 4 ) nanoparticles are studied using x-ray absorption and x-ray magnetic circular dichroism following exposure to hexavalent Cr solution. By examining their magnetic state, Cr cations are shown to exist in trivalent form on octahedral sites within the magnetite spinel surface. The possibility of reducing toxic Cr(VI) into a stable, non-toxic form, such as a Cr 3+ -spinel layer, makes biogenic magnetite nanoparticles an attractive candidate for Cr remediation. PACS number(s): 91.25.fa; 87.64.kd; 89.60.-k; 91.62.Rt
影响因子：
17.1
作者：
Coker, Victoria S.;Telling, Neil D.;Lloyd, Jonathan R.
通讯作者：
Lloyd, Jonathan R.