authors |
Silvestri, S; Ferreira, CD; Oliveira, V; Varejao, JMTB; Labrincha, JA; Tobaldi, DM |
nationality |
International |
journal |
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY |
author keywords |
Diclofenac; PPy-ZnO; Photocatalyst; Solar chamber |
keywords |
ADVANCED OXIDATION PROCESSES; POLYPYRROLE/TIO2 NANOCOMPOSITES; WASTE-WATER; TIO2; PERFORMANCE; FABRICATION; ADSORPTION; MECHANISM; REMOVAL; DIOXIDE |
abstract |
A composite photocatalyst consisting of polypyrrole (PPy) and zinc oxide (ZnO) was successfully synthesized via a polymerization method. Different characterization techniques confirmed that ZnO was intimately attached on PPy. The photocatalytic activity of PPy-ZnO composite was studied experimentally for the degradation of diclofenac (DCF) under simulated solar light irradiation at ambient conditions. It was indicated that the photo catalytic rate constant of PPy-ZnO was nearly 2 times higher than that of ZnO. Through tests with scavengers, h(+) was shown to be the main oxidative species responsible for the degradation of DCF by PPy-ZnO, resulting in 81% degradation of the molecule in merely 60 min. |
publisher |
ELSEVIER SCIENCE SA |
issn |
1010-6030 |
year published |
2019 |
volume |
375 |
beginning page |
261 |
ending page |
269 |
digital object identifier (doi) |
10.1016/j.jphotochem.2019.02.034 |
web of science category |
Chemistry, Physical |
subject category |
Chemistry |
unique article identifier |
WOS:000464087000031
|