title: Microwave synthesis of cellulose/CuO nanocomposites in ionic liquid and its thermal transformation to CuO.
abstract: The purpose of this study is to develop a green strategy to synthesize the cellulose-based nanocomposites and open a new avenue to the high value-added applications of biomass. Herein, we reported a microwave-assisted ionic liquid route to the preparation of cellulose/CuO nanocomposites, which combined three major green chemistry principles: using environmentally friendly method, greener solvents, and sustainable resources. The influences of the reaction parameters including the heating time and the ratio of cellulose solution to ionic liquid on the products were discussed by X-ray powder diffraction, Fourier transform infrared spectrometry, and scanning electron microscopy. The crystallinity of CuO increased and the CuO shape changed from nanosheets to bundles and to particles with increasing heating time. The ratio of cellulose solution to ionic liquid also affected the shapes of CuO in nanocomposites. Moreover, CuO crystals were obtained by thermal treatment of the cellulose/CuO nanocomposites at 800 °C for 3 h in air.
authors.affiliation: Institute of Biomass Chemistry and Technology, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, PR China. mg_ma@bjfu.edu.cn
authors.forename: Ming-Guo
authors.initials: MG
authors.lastname: Ma
authors.forename: Shao-Jun
authors.initials: SJ
authors.lastname: Qing
authors.forename: Shu-Ming
authors.initials: SM
authors.lastname: Li
authors.forename: Jie-Fang
authors.initials: JF
authors.lastname: Zhu
authors.forename: Lian-Hua
authors.initials: LH
authors.lastname: Fu
authors.forename: Run-Cang
authors.initials: RC
authors.lastname: Sun
mesh_terms: D000388:Air; D002482:Cellulose / Q000737:chemistry*; D060326:Chemistry Techniques, Synthetic; D003300:Copper / Q000737:chemistry*; D006358:Hot Temperature; D052578:Ionic Liquids / Q000737:chemistry*; D008872:Microwaves; D053761:Nanocomposites / Q000737:chemistry*; D012996:Solutions
chemical_list: D052578:Ionic Liquids; D012996:Solutions; D003300:Copper; D002482:Cellulose; C030973:cupric oxide