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以水合肼作为还原剂、PVP作为稳定剂,在碱性条件下借助水热途径制备了Fe Ni3双金属化合物,并对其物相结构与外观形貌进行了表征。在超声协同作用下用自制的Fe Ni3化合物微粉作为催化剂对水溶液中的四氯化碳进行了催化降解处理,考查了超声功率、催化剂加入量、温度和p H值对四氯化碳降解效果的影响,同时,与超声辅助还原铁粉降解四氯化碳进行了比较。结果表明,Fe Ni3化合物对于水溶液中的四氯化碳具有显著的催化降解作用,催化剂投加量增大,四氯化碳的降解率升高。在给定的实验条件下,温度对四氯化碳降解效果的影响最为显著,40℃时,15 min内四氯化碳的降解率即可达到94.61%,而且其降解效果明显优于还原铁粉(68.34%)。
Hydrazine hydrate as a reductant and PVP as a stabilizer were used to prepare Fe Ni3 bimetallic compounds by hydrothermal route under basic conditions. The phase structure and appearance of the compounds were characterized. Under the synergistic action of ultrasound, homemade Fe Ni3 compound micropowder was used as a catalyst to catalyze the degradation of carbon tetrachloride in aqueous solution. The effects of ultrasonic power, catalyst loading, temperature and p H value on the degradation of carbon tetrachloride At the same time, it was compared with the degradation of carbon tetrachloride by ultrasonic assisted reduction of iron powder. The results show that the Fe Ni3 compound has a significant catalytic degradation effect on carbon tetrachloride in aqueous solution, the dosage of catalyst increases, and the degradation rate of carbon tetrachloride increases. Under the given experimental conditions, the effect of temperature on the degradation of carbon tetrachloride was the most significant. The degradation rate of carbon tetrachloride reached 94.61% within 15 min at 40 ℃, and the degradation rate was significantly better than that of reduced iron Powder (68.34%).