期刊
JOURNAL OF CLEANER PRODUCTION
卷 196, 期 -, 页码 594-603出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2018.06.086
关键词
Cellulose; Carbon microsphere; Ferromagnetic recyclable; Photocatalyst; Pollutant degradation
资金
- Natural Science Foundation of Jiangsu Province, China [BK20160938, BK20160936]
- Natural Science Foundation of China [51708297]
- Scientific Research Foundation for High-level Talents of Nanjing Forestry University [GXL2016021]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
The bio-renewable cellulose based carbon microspheres through a one-step hydrothermal process (CMS) and a two-step hydrothermal plus pyrolysis process (pCMS) were prepared in the present study, respectively. The prepared carbon microspheres were then hybridized with magnetic CoFe2O4 to prepare recyclable photocatalyst composites. The impact of pyrolysis step on the photocatalysis performance of the composites were then investigated through degrading rhodamine B dye. The results indicated that the incorporation of both CMS and pCMS could significantly enhance the photocatalytic efficiency of the pristine CoFe2O4. Since the pyrolysis carbonization process led to a higher graphitization degree to the pCMS, the pCMS-CoFe2O4 exhibited higher photocatalytic properties than the CMS-CoFe2O4. Moreover, due to the existence of the magnetic CoFe2O4, the prepared photocatalysts could be easily separated from the water and readily reused for more cycles, achieving the goal of cleaner production through avoiding secondary pollution lead by the photocatalyst. The present study could open up a new thinking of preparing environmentally sustainable photocatalyst using bio-renewable biomass in the field of wastewater treatment. (C) 2018 Elsevier Ltd. All rights reserved.
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