利用炭吸附水热法制备LuFeO₃纳米粉体,采用UV-Vis、XRD、TG-DTA、BET等对其进行了表征。以制备的LuFeO₃粉体为催化剂,在金卤灯可见光照射下对甲基橙溶液进行降解,用降解程度来评估该催化剂的光催化特性。结果表明,炭吸附水热法制得的LuFeO₃粉体粒径较小、比表面积大、洁晶度高,有良好的光催化活性;在煅烧时,添加炭黑可有效降低颗粒的烧结团聚;催化剂降解率在140 min高达70.1%,比普通水热法合成的LuFeO₃催化性能提高了1.65倍。

LuFeO₃ nano powder is prepared via carbon adsorption hydrothermal method,and characterized by means of ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis) analysis,X-ray diffraction (XRD),differential thermal-thermogravimetric analysis (TG-DTA),specific surface area and pore size analysis (BET).The prepared LuFeO₃ powder is served as a catalyst to degrade methyl orange solution under the visible light irradiation of metal halide lamp,and its photocatalytic properties are evaluated through the degradation degree.Experimental results show that LuFeO₃ powder prepared via the carbon adsorption hydrothermal method has a small particle size,large specific surface area and high crystallinity,and exhibits an excellent photocatalytic activity.During the calcination in the preparation of LuFeO₃ powder,the addition of carbon black can effectively reduce the particle sintering agglomeration.The degradation of methyl orange over LuFeO₃ powder reaches as high as 70.1% in 140 min,which is 2.65 times that over LuFeO₃ prepared by ordinary hydrothermal method.

李斌(1997-),男,硕士生,研究方向为光催化降解,1020536912@qq.com。