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以二乙三胺五乙酸为配体,通过低温热分解配位前驱体法制备掺杂过渡族金属(Co~(2+)、Mn~(2+)、Zn~(2+)、和Cu~(2+))的铁酸铋。通过XRD和IR等手段研究掺杂离子种类和比例对产物物相的影响。结果表明,掺杂金属离子的种类和比例都对产物物相存在明显的影响。同时,以甲基橙为降解模型研究掺杂对产物光催化性的影响。结果表明,Zn~(2+)、Co~(2+)以及Co~(3+)这3种离子的少量掺杂对FeBiO_3的光催化性能有不同程度的提高,而Mn~(2+)的掺杂则降低FeBiO_3的光催化性。与不掺杂所形成FeBiO_3产物相比,甲基橙分别在掺杂3%Zn~(2+)和3%Co~(2+)的产物催化作用下,光照3 h后的光降解率均可提高37%左右。另外,还研究了掺杂Co~(2+)和Zn~(2+)这2种离子所形成产物的磁性分离、回收和循环催化效果。结果发现,由这2种离子掺杂3%后所形成产物具有良好的催化稳定性以及磁回收性能。
Using diethylenetriamine pentaacetic acid as a ligand, the transition metal (Co 2+, Mn 2+, Zn 2+) and Cu ~ (2+)) bismuth ferrite. The effects of species and proportion of doping ions on the phase of the product were investigated by means of XRD and IR. The results show that the type and proportion of doping metal ions have a significant impact on the product phase. At the same time, the effect of doping on the photocatalytic activity of methyl orange was studied with methyl orange as degradation model. The results show that a small amount of Zn ~ (2 +), Co ~ (2+) and Co ~ (3+) ions can increase the photocatalytic activity of FeBiO_3 to some extent, Doping reduces the photocatalytic activity of FeBiO_3. Compared with the non-doped FeBiO_3 product, the photodegradation rates of methyl orange after 3 h of light irradiation under the catalysis of 3% Zn 2+ and 3% Co 2+ were Can increase about 37%. In addition, the magnetic separation, recovery and cyclic catalysis of the products formed by doping Co 2+ and Zn 2+ were also studied. As a result, it was found that the products formed after 3% doping with these two kinds of ions have good catalytic stability and magnetic recovery performance.