Sub-20 nm-Fe3O4 square and circular nanoplates: synthesis and facet-dependent magnetic and electrochemical properties

Tao Luo; Qiang-Qiang Meng; Chao Gao; Xin-Yao Yu; Yong Jia; Bai Sun; Zhen Jin; Qun-Xiang Li; Jin-Huai Liu; Xing-Jiu Huang

doi:10.1039/C4CC06064D

Sub-20 nm-Fe₃O₄ square and circular nanoplates: synthesis and facet-dependent magnetic and electrochemical properties†

Tao Luo,‡^a Qiang-Qiang Meng,‡^b Chao Gao,^a Xin-Yao Yu,^a Yong Jia,^a Bai Sun,^a Zhen Jin,^a Qun-Xiang Li,*^b Jin-Huai Liu^a and Xing-Jiu Huang*^a

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* Corresponding authors

^a Research Center for Biomimetic Functional Materials and Sensing Devices, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui, P. R. China
E-mail: xingjiuhuang@iim.ac.cn

^b Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, P. R. China
E-mail: liqun@ustc.edu.cn

Abstract

We present an effective method to synthesize 15 nm magnetite nanocrystals with the morphology of square and circular nanoplates, which expose (001) facet and (111) facet, respectively. The magnetic property and electrochemical behavior towards As(III) exhibit strong facet-dependent characteristics. Theoretical calculations confirm the facet-dependent characteristics and provide the corresponding explanations.

Chemical Communications

Sub-20 nm-Fe₃O₄ square and circular nanoplates: synthesis and facet-dependent magnetic and electrochemical properties†

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Sub-20 nm-Fe₃O₄ square and circular nanoplates: synthesis and facet-dependent magnetic and electrochemical properties

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