Shapes Control of Bi2WO6 Nano-Structures as Photo-Fenton Catalysts for Pulping Wastewater Treatment

Autor:	Guigan Fang, Liang Long, Xiuxiu Zou, Deng Yongjun, Wu Ting, Aixiang Pan, Qingwen Tian, Laibao Ding, Miao Ran
Rok vydání:	2019
Předmět:	photo-Fenton-like reaction Bi2WO6 Materials science Scanning electron microscope Chemical oxygen demand 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Catalysis photocatalytic activities chemistry.chemical_compound Wastewater chemistry pulping wastewater treatment Photocatalysis Degradation (geology) Diffuse reflection Physical and Theoretical Chemistry 0210 nano-technology Methylene blue 0105 earth and related environmental sciences Nuclear chemistry
Zdroj:	Catalysts Volume 9 Issue 12
ISSN:	2073-4344
Popis:	Bi2WO6 assembled by flower-like microspheres and nanosheets were controllably synthesized through a one-step hydrothermal approach. Multiple technologies, including X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and UV&ndash Vis diffuse reflectance spectrum (UV&ndash Vis), were carried out to characterize the as-synthesized samples. The photocatalytic efficiency of Bi2WO6 synthesized with a series of temperature and pH values shows different morphologies and photocatalytic properties. The photocatalyst (Bi2WO6) synthesized at 220 ° C and pH of 7 exhibited the best photocatalytic performance, with the methylene blue (MB) degradation approaching 91.6% after reaction time of 60 min. Free radical capture experiments indicate that &bull OH is the primary reactive species in the methylene blue (MB) degradation reaction, h+ and &bull O2&minus contribute negligible influence, while the addition of H2O2 significantly improves the photocatalytic activity of Bi2WO6. Biodegraded poplar preconditioning refiner chemical alkaline peroxide mechanical pulp wastewater (PPW) was treated over Bi2WO6 under UV light (Bi2WO6/UV/H2O2) chemical oxygen demand (CODCr) and color degradation rate were 85.8% and 92.0%, respectively. These results show that Bi2WO6 semiconductors can be introduced as an efficient and stable photocatalyst for industry wastewater treatment.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ba1046cebce74da8fa8c37ac1ab6fac https://doi.org/10.3390/catal9121065 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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