Sonocatalytic activity of LuFeO_3 crystallites synthesized via a hydrothermal route

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	Sonocatalytic activity of LuFeO_3 crystallites synthesized via a hydrothermal route
	Zhou Ming; Yang Hua; Xian Tao; Yang Yang; Zhang Yunchuan
刊名	催化学报
	2015
卷号	36 期号:11 页码:1987-1994
关键词	Lutetium orthoferrite Hydrothermal synthesis Sonocatalytic activity Hydroxyl radical Inorganic anion Degradation of organic dyes
ISSN号	0253-9837
英文摘要	LuFeO_3 crystallites of different sizes and morphologies were synthesized via a hydrothermal route. The sonocatalytic properties of the as-synthesized samples were investigated by degrading various organic dyes, including acid orange 7 (AO7), rhodamine B (RhB), methyl orange (MO), and methylene blue (MB), under ultrasonic irradiation, revealing that they exhibit excellent sonocatalytic activity toward the degradation of these dyes. Particularly, the synthesized bar-like particles with lengths of ~3 mum and widths of ~1 mum have the highest sonocatalytic activity, and the degradation percentage of AO7 reaches 89% after 30 min of sonocatalysis. The effects of inorganic anions such as Cl~-, NO_3~-, SO_4~(2-), PO_4~(3-), and HCO_3~- on the sonocatalysis efficiency were investigated. Hydroxyl radicals (?OH) detected by fluorimetry using terephthalic acid as a probe molecule were found to be produced over the ultrasonic-irradiated LuFeO_3 particles. The addition of ethanol, which acts as a?OH scavenger, leads to quenching of ?OH radicals and a simultaneous decrease in the dye degradation. This suggests that ?OH is the dominant active species responsible for the dye degradation.
WOS研究方向	Chemistry
语种	英语
CSCD记录号	CSCD:5552117
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/70991]
专题	理学院
作者单位	School of Science, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
推荐引用方式 GB/T 7714	Zhou Ming,Yang Hua,Xian Tao,et al. Sonocatalytic activity of LuFeO_3 crystallites synthesized via a hydrothermal route[J]. 催化学报,2015,36(11):1987-1994.
APA	Zhou Ming,Yang Hua,Xian Tao,Yang Yang,&Zhang Yunchuan.(2015).Sonocatalytic activity of LuFeO_3 crystallites synthesized via a hydrothermal route.催化学报,36(11),1987-1994.
MLA	Zhou Ming,et al."Sonocatalytic activity of LuFeO_3 crystallites synthesized via a hydrothermal route".催化学报 36.11(2015):1987-1994.