Qu Jiangang, Qian Jiaqi, Wu Mengtao, Mao Qinghui, Li Min
School of Textile and Clothing, Nantong University Nantong Jiangsu 226019 China
Key Laboratory of Eco-textiles, Ministry of Education, Jiangnan University Wuxi Jiangsu 224122 China
RSC Adv. 2020 Oct 27;10(64):39295-39303. doi: 10.1039/d0ra07588d. eCollection 2020 Oct 21.
Photocatalytic materials with high efficiency and convenient recyclability have attracted great interest for the treatment of printing and dyeing wastewater. In this paper, a narrow band gap BiVO photocatalyst was loaded onto Ag modified cotton fabric by a hydrothermal method. The prepared composite materials were characterized by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and ultraviolet visible light absorption spectroscopy (UV-vis). The composite materials as prepared show superb photocatalytic activity and reusable performance for the degradation of C.I. Reactive Black 5 (RB5). The degradation rate can reach 99% within 90 min under 1 kW xenon lamp irradiation, and over 90% of the photocatalytic performance is preserved even after five recycles. Furthermore, the photocatalytic mechanism was proposed by spectral analysis and free radical trapping experiments.
具有高效性和便捷可回收性的光催化材料在印染废水处理方面引起了极大关注。本文采用水热法将窄带隙BiVO光催化剂负载到Ag改性棉织物上。通过扫描电子显微镜结合能谱仪（SEM-EDS）、X射线衍射（XRD）、X射线光电子能谱（XPS）和紫外可见吸收光谱（UV-vis）对制备的复合材料进行了表征。所制备的复合材料对活性黑5（RB5）的降解表现出优异的光催化活性和可重复使用性能。在1 kW氙灯照射下，90 min内降解率可达99%，即使经过五次循环，仍保留超过90%的光催化性能。此外，通过光谱分析和自由基捕获实验提出了光催化机理。
