本文選題：BiOI　切入點：FeO　出處：《黑龍江大學自然科學學報》2017年02期 　論文類型：期刊論文

【摘要】：采用溶劑熱-沉積法制備了新型可見光催化磁性納米Bi OI/Fe3O4復合材料,通過傅里葉紅外光譜儀(FT-IR)、紫外-可見漫反射光譜(DRS)對其進行表征。首次提出了BiOI/Fe_3O_4耦合過硫酸鹽(PS)催化光降解工藝,并以偶氮染料AO7模擬天然水體,考察了黃腐酸(FAs)以及水中常見的陰離子HCO_3~-和Cl~-等因素對AO7降解的影響。結果表明,持續(xù)可見光照射60 min,AO7在Bi OI/Fe_3O_4耦合PS體系中的降解率為98.3%;但加入HCO_3~-、黃腐酸(FAs)和Cl~-后,由于·OH和SO_4~-·被淬滅捕獲,AO7的降解受到明顯抑制,而Cl-的抑制作用小于前兩者。經(jīng)過3次材料重復回收利用,AO7降解率均能達到90%以上,表明材料具有良好的穩(wěn)定性。
[Abstract]:A novel visible photocatalytic magnetic nanocrystalline Bi OI/Fe3O4 composite was prepared by solvothermal deposition. It was characterized by Fourier transform infrared spectroscopy (FTIR) and UV-Vis diffuse reflectance spectroscopy (DRS). The photodegradation process catalyzed by BiOI/Fe_3O_4 coupled persulfate was proposed for the first time, and the azo dye AO7 was used to simulate the natural water body. The effects of the common anions in water, such as humic acid and anions, on the degradation of AO7 were investigated. The results showed that the degradation rate of AO7 in Bi OI/Fe_3O_4 coupled PS system for 60 min after continuous visible irradiation was 98.3%, but after adding HCOS3, FAS-, FAS- and Cl-, the degradation rate of AO7 in Bi OI/Fe_3O_4 coupled PS system was 98.3%, and the degradation rate of AO7 was 98.3% after continuous visible light irradiation for 60 min. The degradation of AO7 by quenching and quenching of 路OH and SO4- 路was obviously inhibited, but the inhibitory effect of Cl- was less than that of the former two. The degradation rate of AO7 could reach more than 90% after three times of recycling, which indicated that the material had good stability.
【作者單位】： 四川大學建筑與環(huán)境學院;
【基金】：國家自然科學基金資助項目(51508354) 成都市科技惠民技術研發(fā)項目(2015-HM01-00536-SF)
【分類號】：O643.36;TB332
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本文編號：1594156