期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 227, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2019.117659
关键词
Carbon dots; Palm powders; Photodegradation; Visible light; Dye pollutant
类别
资金
- National Natural Science Foundation of China [31870549]
- Jiangsu Nature Science Foundation [BK20161524]
- Program for 333 Talents Project in Jiangsu Province [BRA2016381]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX17_839]
- Advanced Analysis and Testing Center of Nanjing Forestry University
To exploit photocatalytic performance is one of the worthiest efforts for expanding the application of carbon dots (CDs) owing to their low-cost starting materials, facile preparation and simple operation without secondary pollution. Herein, novel biomass-based CDs (Bio-CDs) were successfully synthesized from waste palm powders by using one-step hydrothermal method under the facilitation of thionyl chloride on carbonization process and doping effect. The resultant Bio-CDs exhibited quasi-spherical shape with an average size of 3.54 nm and displayed blue-emissive fluorescence with excitation-dependent behavior. Benefiting from the S and Cl co-doped structure and small size effect, the synthesized Bio-CDs possessed high photocatalytic activity towards the degradation of organic dyes under visible light. The degradation of the Rhodamine B was nearly 71.7%, while the Methylene Blue was almost decomposed completely (ca. 94.2%), which make the Bio-CDs to be a hopeful candidate as photocatalyst for the reduction of organic pollutants. (C) 2019 Published by Elsevier B.V.
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