Degradation of atrazine from the riparian zone with a PEC system based on an anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and an activated carbon photocathode. Issue 93 (20th September 2016)

• Record Type: Journal Article
• Authors: Liang, Xiongwei; Wang, Li; Ma, Fang; Lou, Huan; Jiang, Xiaofeng; Li, Zhe
• Is Part Of: RSC advances. Volume 6:Issue 93(2016)
• Page Start: 89994
• Page End: 90001
• Publication Date: 2016-09-20
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra11256k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In this study, we developed a photoelectrochemical (PEC) system based on an anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and an activated carbon photocathode to degrade atrazine from the riparian zone. Abstract : In this study, we developed a photoelectrochemical (PEC) system based on an anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and an activated carbon photocathode to degrade atrazine from the riparian zone. This material of N–S–TiO2 /AC was characterized by SEM, XRD, XPS, EDX and fluorescence detection. The characterization results indicated that the systems of NS–TiO2 –TiO2 /AC and NS–TiO2 NCs/TNTAs-AC/PTFE allowed the highest yield of ˙OH. According to the simulation results of the absorbance of N–S–TiO2 with MS, N–S–TiO2 has a maximum absorbance at 155 nm and 237 nm in the UV region; the average absorbance of N–S–TiO2 in the visible region was 10 000 higher than that of TiO2 . At pH 5.9, N–S–TiO2 NCs/TiO2 NTs-AC/PTFE realized the highest atrazine removal rate, reaching a 93.89% atrazine removal rate within 150 min in water from the riparian buffer zone. The PEC system comprising the anode of N–S–TiO2 nanocrystal-modified TiO2 nanotubes and the activated carbon photocathode might be an efficient way to remove atrazine in the riparian buffer zone.