基于铁基非晶合金作为催化剂的超声芬顿实验设计

Experimental design of Sono-Fenton based on Fe-based amorphous alloys as catalysts

偶氮化合物因为制备过程简单、制造成本低,在众多领域被广泛应用,但其难以通过传统的废水处理方法从废水中去除。芬顿法反应速度快、选择性低、氧化能力强,被广泛用于高毒有机废水的预处理。该文设计了一个以铁基非晶合金作为催化剂,采用超声芬顿的方法降解偶氮染料的综合性实验。实验内容包括对铁基非晶合金条带进行XRD、SEM表征,探究偶氮染料的pH、氧化剂用量和温度对超声芬顿反应过程的影响规律,以及采用EPR手段检测了在反应中起主要作用的活性氧化物种类。该实验良好地融合了基础教学内容和科研热点,兼具综合性、应用性与探究性,有利于培养学生的创新实践能力与科研素养。

Azo compounds are widely used in many fields because of their simple preparation process and low manufacturing costs,but they are difficult to remove from wastewater by conventional wastewater treatment methods.The Fenton method is widely used for the pretreatment of highly toxic organic wastewater due to its fast reaction rate,low selectivity and high oxidation capacity.In this paper,a comprehensive experiment is designed for the degradation of azo dyes using an Fe-based amorphous alloy as a catalyst by Sono-Fenton.The experimental content includes XRD and SEM characterization of the Fe-based amorphous alloy ribbons,investigation of the effect of pH,oxidant dosage and temperature on the reaction process,and the detection of the reactive oxide species that play a major role in the reaction by EPR.The experiment is well integrated with basic teaching content and scientific research hotspots,which is comprehensive,applicative and investigative,and is conducive to the cultivation of students'innovative practical skills and scientific research literacy.