干旱区生态环境知识资源中心(Arid): Sonophotocatalytic degradation mechanisms of Rhodamine B dye via radicals generation by micro- and nano-particles of ZnO

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DOI	10.1016/j.apcatb.2018.10.078
	Sonophotocatalytic degradation mechanisms of Rhodamine B dye via radicals generation by micro- and nano-particles of ZnO
	Lops, Carmine 1; Ancona, Andrea 1; Di Cesare, Katia 1; Dumontel, Bianca 1; Garino, Nadia 1,2; Canavese, Giancarlo 1; Hernandez, Simelys 1,2; Cauda, Valentina 1
通讯作者	Hernandez, Simelys ; Cauda, Valentina
来源期刊	APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN	0926-3373
EISSN	1873-3883
出版年	2019
卷号	243 页码:629-640
英文摘要	In this work, it is proposed an environmental friendly sonophotocatalytic approach to efficiently treat polluted waters from industrial dyes exploiting ZnO micro- and nano-materials. For the first time, we deeply investigated the generation of reactive oxygen species (ROS) under ultrasound stimulation of different ZnO structures by Electron Paramagnetic Resonance Spectroscopy (EPR). Indeed, five zinc oxide (ZnO) micro- and nano-structures, i.e. Desert Roses (DRs), Multipods (MPs), Microwires (MWs), Nanoparticles (NPs) and Nanowires (NWs), were studied for the Rhodamine B (RhB) sonodegradation under ultrasonic irradiation. The DRs microparticles demonstrated the best sonocatalytic performance (100% degradation of RhB in 180 min) and the highest OH center dot radicals generation under ultrasonic irradiation. Strikingly, the coupling of ultrasound and sun-light irradiation in a sonophotodegradation approach led to 100% degradation efficiency, i.e. color reduction, of RhB in just 10 min, revealing a great positive synergy between the photocatalytic and sonocatalytic mechanisms. The RhB sonophotocatalytic degradation was also evaluated at different initial dye concentrations and with the presence of anions in solution. It was demonstrated a good stability over repeated cycles of dye treatment, which probe the applicability of this technique with industrial effluents. In conclusion, sonophotocatalytic degradation synergizing sunlight and ultrasound in the presence of DRs microparticles shows a great potential and a starting point to investigate further the efficient treatment of organic dyes in wastewater.
英文关键词	Zinc oxide Sonocatalysis Photocatalysis Rhodamine B Electron paramagnetic resonance spectroscopy
类型	Article
语种	英语
国家	Italy
开放获取类型	Green Accepted, hybrid
收录类别	SCI-E
WOS记录号	WOS:000453616800065
WOS关键词	SONOCATALYTIC DEGRADATION ; PHOTOCATALYTIC DEGRADATION ; ULTRASONIC DEGRADATION ; AQUEOUS-SOLUTION ; WASTE-WATER ; IRRADIATION ; KINETICS ; NANOSTRUCTURES ; DISINFECTION ; COMPOSITES
WOS类目	Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
WOS研究方向	Chemistry ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214224
作者单位	1.Politecn Torino, Dept Appl Sci & Technol, Cso Duca Abruzzi 24, I-10129 Turin, Italy; 2.Ist Italiano Tecnol, Ctr Sustainable Future Technol CSFT POLITO, Corso Trento 21, I-10129 Turin, Italy
推荐引用方式 GB/T 7714	Lops, Carmine,Ancona, Andrea,Di Cesare, Katia,et al. Sonophotocatalytic degradation mechanisms of Rhodamine B dye via radicals generation by micro- and nano-particles of ZnO[J],2019,243:629-640.
APA	Lops, Carmine.,Ancona, Andrea.,Di Cesare, Katia.,Dumontel, Bianca.,Garino, Nadia.,...&Cauda, Valentina.(2019).Sonophotocatalytic degradation mechanisms of Rhodamine B dye via radicals generation by micro- and nano-particles of ZnO.APPLIED CATALYSIS B-ENVIRONMENTAL,243,629-640.
MLA	Lops, Carmine,et al."Sonophotocatalytic degradation mechanisms of Rhodamine B dye via radicals generation by micro- and nano-particles of ZnO".APPLIED CATALYSIS B-ENVIRONMENTAL 243(2019):629-640.