Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe2O4 and Their Application in Water TreatmentReportar como inadecuado


Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe2O4 and Their Application in Water Treatment


Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe2O4 and Their Application in Water Treatment - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Institute of Materials for Energy and Environment, State Key Laboratory Breeding Based of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University, Qingdao 266071, China





*

Author to whom correspondence should be addressed.



Academic Editor: Beatriz Noheda

Abstract Hierarchical colloidal nanocrystal assemblies CNAs of ZnFe2O4 have been synthesized controllably by a solvothermal method. Hollow ZnFe2O4 spheres can be formed with the volume ratios of ethylene glycol to ethanol of 1:4 in the starting systems, while solid ZnFe2O4 CNAs are obtained by adjusting the volume proportion of ethylene glycol to ethanol from 1:2 to 2:1. Magnetometric measurement data showed that the ZnFe2O4 CNAs obtained with the volume ratios of 1:2 and 1:1 exhibited weak ferromagnetic behavior with high saturation magnetization values of 60.4 and 60.3 emu·g−1, respectively. However, hollow spheres showed a saturation magnetization value of 52.0 emu·g−1, but the highest coercivity among all the samples. It was found that hollow spheres displayed the best ability to adsorb Congo red dye among all the CNAs. The formation mechanisms of ZnFe2O4 CNAs, as well as the relationship between their structure, crystallite size, and properties were discussed based on the experimental results. View Full-Text

Keywords: nanocrystal assembly; solvothermal synthesis; magnetism nanocrystal assembly; solvothermal synthesis; magnetism





Autor: Peizhi Guo * , Meng Lv, Guangting Han, Changna Wen, Qianbin Wang, Hongliang Li and Xiusong Zhao

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados