Performance promotion of Ag2O photocatalyst by particle size and crystal surface regulation. (17th June 2020)

• Record Type: Journal Article
• Authors: He, Jian; Fu, Hongyan; Wu, Pan; Lin, Zehao; Zeng, Ya; Jiang, Wei
• Is Part Of: New journal of chemistry. Volume 44:Number 25(2020)
• Page Start: 10719
• Page End: 10728
• Publication Date: 2020-06-17
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d0nj00255k
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Photocatalytic performance of Ag2 O was greatly improved by adjusting the crystal plane structure and size with pyridine, which promoted the application of Ag2 O to actual industrial printing and dyeing wastewater treatment systems. Abstract : The insufficient photocatalytic performance of Ag2 O makes it difficult to apply to actual industrial printing and dyeing waste water treatment systems, which contain a variety of organic pollutants. Therefore, it is urgent to improve the photocatalytic performance of Ag2 O. In this study, the main factors affecting the properties of Ag2 O photocatalysts were screened out by single factor experiments. Then, the optimum conditions for the preparation of Ag2 O were simulated by response surface design. The prepared Ag2 O showed good photodegradation performance to methyl orange and phenol, but the degradation of rhodamine B was significantly delayed. After that, the pyridine was introduced to adjust the crystal plane structure of Ag2 O. The results showed that the photocatalytic oxidation capacity of Ag2 O was greatly improved. Ninety percent of rhodamine was removed within 25 minutes. Moreover, the mechanism of controlling the photocatalytic performance has also been studied through fine characterizations.