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摘要：本文采用非晶态配合物法及浸渍提拉法在导电玻璃基底上制备了Bi₂MoO₆薄膜电极,采用此电极在可见光(λ>420 nm)照射下进行了光电催化氧化处理氰化物的研究.通过场发射扫描电子显微镜和X射线衍射对电极的晶体结构进行了表征,发现导电玻璃基底上充分而平均地覆盖着黄色的纳米Bi₂MoO₆颗粒,形成了γ-Bi₂MoO₆相.在Bi₂MoO₆电极处理络合态氰化物Cu(CN)₃^2-实验中,总氰化物的去除率和Cu的回收率大致是随着电压的升高而增大,当电压为2.0 V,反应时间为120 min时,处理效果最好,剩余总氰化物和Cu的含量分别为30%和35%.破络合后的Cu²⁺一部分以Cu(Ⅱ)形式沉积在阳极上,一部分转化为Cu单质沉积在阴极上.在Bi₂MoO₆电极处理自由态氰化物NaCN实验中,总氰化物的去除率大致也是随着电压的升高而增大,当电压为2.0 V,反应时间为120 min时,剩余总氰化物含量为5%.

Abstract：In this study, Bi₂MoO₆ film was deposited onto ITO substrate from a complex solution by dip-coating method, which was used as anode to degrade cyanide under visible light irradiation. The Bi₂MoO₆ film was characterized by field emission scanning electron microscopy and X-ray diffraction.γ-Bi₂MoO₆ phase was confirmed. In the degradation of Cu(CN)₃^2- with Bi₂MoO₆ electrode as anode, the treatment efficiencies increase significantly with the increase of the voltage. The results showed that when the voltage of 2.0 V and the reaction time of 120 min, the total residual of cyanide and copper was 30% and 35% respectively. A part of the liberated Cu²⁺ was deposited on the anode, and a part of the liberated Cu²⁺ was deposited on the cathode with zero value. In the degradation of NaCN with Bi₂MoO₆ electrode as anode, the treatment effect increases with the increase of the voltage. At the voltage of 2.0 V and the reaction time of 120 min, the total residual of cyanide was 5%.