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| Photocatalytic degradation of bisphenol A by CuO/MWCNTs composites |
| Received:November 12, 2021 |
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| KeyWord:CuO;multi-wall carbon nanotubes（MWCNTs）;composite;photocatalysis;bisphenol A |
| Author Name | Affiliation | E-mail | | CHE Naiju | National Engineering Research Center for Efficient Utilization of Soil and Fertilize Resources, College of Resources and Environment, Shandong Agricultural University, Tai' an 271018, China | | | LI Yinhui | National Engineering Research Center for Efficient Utilization of Soil and Fertilize Resources, College of Resources and Environment, Shandong Agricultural University, Tai' an 271018, China | | | YANG Fan | National Engineering Research Center for Efficient Utilization of Soil and Fertilize Resources, College of Resources and Environment, Shandong Agricultural University, Tai' an 271018, China | | | LIU Guoping | Agricultural and Rural Bureau of Kenli District, Dongying 257500, China | | | ZHANG Zengli | Agricultural and Rural Bureau of Dongying District, Dongying 257000, China | | | LI Chengliang | National Engineering Research Center for Efficient Utilization of Soil and Fertilize Resources, College of Resources and Environment, Shandong Agricultural University, Tai' an 271018, China | chengliang_li11@163.com |
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| Abstract: |
| To improve the photocatalytic performance of CuO, CuO/multi-wall carbon nanotubes(MWCNTs)composites were prepared by combining CuO with MWCNTs. Both Nano-CuO and CuO/MWCNTs were characterized using scanning electron microscopy(SEM), Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), and UV-visible diffuse reflectance spectroscopy(UV-Vis DRS) to analyze their morphologies, compositions, phase structures, and optical properties. The results showed that the CuO/MWCNTs had the typical structure of both CuO and MWCNTs, and the light absorption performance of CuO/MWCNTs was better than that of Nano-CuO. Under ultraviolet light, the photocatalytic degradation of bisphenol A(BPA)was performed using two types of photocatalysts. The results showed that under the action of the two photocatalysts the degradation time of BPA reached equilibrium at 24 h; however, under the action of CuO/MWCNTs, the degradation and reaction rates of BPA were significantly higher than those under the action of Nano-CuO, and the degradation rate increased by 14%~35%. Within the test range, the photocatalytic degradation rate of BPA increased with an increase in catalyst dosage, decreased with an increase in pH and ionic strength, and increased first and then decreased with an increase in BPA concentration. CuO/MWCNTs were significantly affected under the same conditions, but the photocatalytic degradation rate of CuO/MWCNTs remained much higher than that of Nano-CuO. CuO/MWCNT composites can significantly improve the photocatalytic efficiency and availability of ultraviolet light, and effectively promote the photocatalytic application and development of CuO. |
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