期刊
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
卷 42, 期 2, 页码 -出版社
WILEY
DOI: 10.1002/ep.13984
关键词
heterogeneous photocatalysis; p-nitrophenol; response surface methodology; ZnO nanoparticles
In this work, the authors investigated the photocatalytic degradation of p-nitrophenol using a cobalt-doped ZnO photocatalyst. They employed response surface methodology for experimental design and optimization of the photocatalytic process. Under optimized conditions, up to 82% degradation was achieved, and the photocatalyst showed considerable activity in treating real paper wastewater.
In this work, we investigated the photocatalytic degradation of p-nitrophenol using a cobalt (Co)-doped ZnO photocatalyst. The Co-doped ZnO photocatalyst was first prepared through a simple wet impregnation method and subsequently characterized using various qualitative and quantitative techniques. Response surface methodology (RSM) was employed for experimental design and optimization of photocatalytic process. The effects including initial concentration of 4- Nitrophenol [4-NP](in), catalyst dosage, pH and irradiation time were investigated, and RSM suggested a second-degree polynomial model for abatement of p-nitrophenol from aqueous phase. Under optimized conditions (pH = 5; Irradiation time = 180 min; catalyst dosage = 30 mg; [4-NP](in) = 30 mg/L), up to 82% degradation was achieved, signifying the efficacy of the prepared photocatalyst. Moreover, the real case study was employed by incorporating Co-doped ZnO nanocomposite for treatment of real paper wastewater and results showed a considerable photocatalytic activity of Co-ZnO nanocomposites on paper wastewater.
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