Immobilizing Ag/Cu2O on cotton fabric to enhance visible light photocatalytic activity. (24th November 2020)

• Record Type: Journal Article
• Authors: Wang, Lili; Mao, Haiyan; Li, Ziyin; Wang, Chunxia; Gao, Dawei
• Is Part Of: New journal of chemistry. Volume 44:Number 47(2020)
• Page Start: 20759
• Page End: 20769
• Publication Date: 2020-11-24
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj04391e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Ag/Cu2 O composites were prepared by the solvothermal and photo-reduction method. Abstract : Ag/Cu2 O composites were prepared by the solvothermal and photo-reduction method. Then, Ag/Cu2 O nanoparticle-immobilized cotton fabric with a 3D structure (Ag/Cu2 O/CF) was successfully prepared by a relatively mild method, which was easy to be recycled and reused in the treatment of dye wastewater. Their composition, structure and morphology were carefully investigated by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS). Their photocatalytic activities were evaluated by measuring the degradation of methyl orange (MO) under the irradiation of visible light. The results showed that the photocatalytic activities of Cu2 O were influenced by the preparation time and Ag/Cu2 O enhanced the photocatalytic performance of the composite compared to pure Cu2 O. More importantly, the Ag/Cu2 O/CF also exhibited superior photocatalytic performance and excellent reusability. The species capture experiment and the electron spin resonance (ESR) study showed that ˙OH, h + and ˙O2 − all took part in the MO degradation. Furthermore, the photocatalytic mechanism of Ag/Cu2 O/CF has been proposed based on the experimental results. Therefore, the present work provides some insight into degradation of organic pollutants and the as-prepared composite has great potential for use in practical wastewater treatment.