%0 Journal Article
%T 铁掺杂钼酸铋光催化活化过二硫酸盐高效降解阿特拉津<br>High Efficiency Degradation of Atrazine by Photocatalytic Peroxydisulfate Activation of Fe Doped Bismuth Molybdate
%A 张宇瀚
%A 陈嵘
%A 赵慧平
%J Material Sciences
%P 1225-1233
%@ 2160-7621
%D 2021
%I Hans Publishing
%R 10.12677/MS.2021.1112142
%X 采用溶剂热法制备了不同铁掺杂量的Fe掺杂型钼酸铋(FeB)，通过X射线粉末衍射(XRD)和火焰原子吸收光谱(AAS)确定了材料的物相组成和Fe掺入量。与纯Bi<sub>2</sub>MoO<sub>6</sub>相比，Fe掺杂型Bi<sub>2</sub>MoO<sub>6</sub>表现出显著提升的可见光活化过二硫酸盐(PDS)降解阿特拉津(ATZ)性能。优化反应条件后，反应30 min后对ATZ的降解效率达98.5%。光电性质测试和稳态荧光表征结果表明，Fe掺杂促进了Bi<sub>2</sub>MoO<sub>6</sub>的光生电子空穴的生成、分离和迁移效率，从而提升材料光催化活化PDS降解ATZ的活性。电子顺磁共振(EPR)和自由基捕获剂实验结果表明反应体系中促进ATZ降解的主要活性物种是硫酸根自由基(<b>·</b>SO<sub>4</sub><sup>-</sup>)，该自由基由PDS的过氧键断键活化而产生。<br />
Fe doped Bi<sub>2</sub>MoO<sub>6</sub> (FeB) with different Fe amounts was synthesized via solvothermal method. Pow-der X-Ray diffraction (XRD) and flame atomic adsorption spectra (AAS) results confirmed the composition and Fe content of the prepared FeB samples. Compared with pure Bi<sub>2</sub>MoO<sub>6</sub>, Fe doped Bi<sub>2</sub>MoO<sub>6</sub> samples exhibited a significantly enhanced photocatalytic PDS activation for atrazine ATZ degradation ability. The degradation efficiency of ATZ during 30 minutes achieved to 98.5% after optimization. The photoelectric property test and fluorescence characterization indicated that Fe doping promoted the generation, separation and migration efficiency of photogenerated electron-holes of Bi<sub>2</sub>MoO<sub>6</sub>, and thus enhanced the photocatalytic activated PDS performance for ATZ degradation. The electron paramagnetic resonance (EPR) and trapping experiments indicated that sulfate radical (<b>·</b>SO<sub>4</sub><sup>-</sup>) was the main active species in ATZ degradation, and&nbsp; &nbsp;was generated by the activation of PDS by peroxide bond breaking.
%K 钼酸铋，铁掺杂，过二硫酸盐，阿特拉津<br>Bismuth Molybdate
%K Fe Doping
%K Peroxydisulfate
%K Atrazine
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=47054