Facile Synthesis of Well-Dispersed Superparamagnetic 纬-Fe2O3 Nanoparticles Encapsulated in Three-Dimensional Architectures of Cellulose Aerogels and Their Applications for Cr(VI)
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- 作者：Caichao Wan ; Jian Li
- 刊名：ACS Sustainable Chemistry & Engineering
- 出版年：2015
- 出版时间：September 8, 2015
- 年：2015
- 卷：3
- 期：9
- 页码：2142-2152
- 全文大小：698K
- ISSN：2168-0485
文摘
With the increasing emphasis on green chemistry, cellulose aerogels that consist of abundant three-dimensional (3D) architectures have been considered as a class of idea green matrix materials to encapsulate various nanoparticles for synthesis of miscellaneous functional materials. Herein, a facile template synthesis combined with chemical coprecipitation was implemented to prepare hybrid 纬-Fe2O3@cellulose aerogels (纬-Fe2O3@CA). The 纬-Fe2O3 nanoparticles are well dispersed and immobilized in the micro/nanoscale pore structure of the aerogels, and exhibit superparamagnetic behavior. The particle sizes, pore characteristic parameters, magnetic property, and mechanical strength of the synthetic 纬-Fe2O3@CA could be flexibly tailored by adjusting the concentrations of the initial reactants. In addition, 纬-Fe2O3@CA exhibits rapid adsorption rate and excellent adsorption ability to remove Cr(VI) heavy metal ions. Moreover, combined with the advantages of environmental benefits, facile convenient preparation method, high specific surface area and strong mechanical strength, and strong magnetic responsiveness, this class of green 纬-Fe2O3@CA is more favorable and suitable for Cr(VI) removal from contaminated water, and also useful in many other applications.