Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment

Hierarchical colloidal nanocrystal assemblies (CNAs) of ZnFe(2)O(4) have been synthesized controllably by a solvothermal method. Hollow ZnFe(2)O(4) spheres can be formed with the volume ratios of ethylene glycol to ethanol of 1:4 in the starting systems, while solid ZnFe(2)O(4) CNAs are obtained by...

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Autores principales: Guo, Peizhi, Lv, Meng, Han, Guangting, Wen, Changna, Wang, Qianbin, Li, Hongliang, Zhao, Xiu Song
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456613/
https://www.ncbi.nlm.nih.gov/pubmed/28773927
http://dx.doi.org/10.3390/ma9100806
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author Guo, Peizhi
Lv, Meng
Han, Guangting
Wen, Changna
Wang, Qianbin
Li, Hongliang
Zhao, Xiu Song
author_facet Guo, Peizhi
Lv, Meng
Han, Guangting
Wen, Changna
Wang, Qianbin
Li, Hongliang
Zhao, Xiu Song
author_sort Guo, Peizhi
collection PubMed
description Hierarchical colloidal nanocrystal assemblies (CNAs) of ZnFe(2)O(4) have been synthesized controllably by a solvothermal method. Hollow ZnFe(2)O(4) spheres can be formed with the volume ratios of ethylene glycol to ethanol of 1:4 in the starting systems, while solid ZnFe(2)O(4) 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 ZnFe(2)O(4) 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 ZnFe(2)O(4) CNAs, as well as the relationship between their structure, crystallite size, and properties were discussed based on the experimental results.
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spelling pubmed-54566132017-07-28 Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment Guo, Peizhi Lv, Meng Han, Guangting Wen, Changna Wang, Qianbin Li, Hongliang Zhao, Xiu Song Materials (Basel) Article Hierarchical colloidal nanocrystal assemblies (CNAs) of ZnFe(2)O(4) have been synthesized controllably by a solvothermal method. Hollow ZnFe(2)O(4) spheres can be formed with the volume ratios of ethylene glycol to ethanol of 1:4 in the starting systems, while solid ZnFe(2)O(4) 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 ZnFe(2)O(4) 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 ZnFe(2)O(4) CNAs, as well as the relationship between their structure, crystallite size, and properties were discussed based on the experimental results. MDPI 2016-09-29 /pmc/articles/PMC5456613/ /pubmed/28773927 http://dx.doi.org/10.3390/ma9100806 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Guo, Peizhi
Lv, Meng
Han, Guangting
Wen, Changna
Wang, Qianbin
Li, Hongliang
Zhao, Xiu Song
Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title_full Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title_fullStr Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title_full_unstemmed Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title_short Solvothermal Synthesis of Hierarchical Colloidal Nanocrystal Assemblies of ZnFe(2)O(4) and Their Application in Water Treatment
title_sort solvothermal synthesis of hierarchical colloidal nanocrystal assemblies of znfe(2)o(4) and their application in water treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456613/
https://www.ncbi.nlm.nih.gov/pubmed/28773927
http://dx.doi.org/10.3390/ma9100806
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