Fluorescent carbon dots synthesized by waste wind turbine blade for photocatalytic degradation |
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| Authors: | Congling Wang Lilin Yang Kunyu Chu Jun Xu Dongzhi Wang Weilin Zhao |
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| Institution: | 1. School of Materials Science and Engineering, Hunan University, Changsha, China;2. School of Materials Science and Engineering, University of Jinan, Jinan, China;3. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China;4. Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China |
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| Abstract: | Developing novel waste recycling strategies has become a feasible solution to overcome environmental pollution. In this work, a method of using waste wind turbine blade (WTB) as a carbon source to synthesize blue fluorescent carbon dots (B-CDs) by hydrothermal treatment is proposed. B-CDs are spherical and have an average particle size of 5.2 nm. The surface is rich in C–O, C=O, ?CH3, and N–H bond functional groups, containing five elements: C, O, N, Si, and Ca. The optimal emission wavelength of B-CDs is 463 nm, corresponding to an excitation wavelength of 380 nm. Notably, a relatively high quantum yield of 29.9% and a utilization rate of 40% were obtained. In addition, B-CDs can serve as a photocatalyst to degrade methylene blue dye, with a degradation efficiency of 64% under 40-min irradiation conditions. The presence of holes has a significant influence on the degradation process. |
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| Keywords: | carbon dots photocatalytic degradation waste fiber wind turbine blade |
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