为寻找一种简便且具有良好孔结构的光催化剂合成路径,提升并拓宽其光催化应用范围,通过将N掺杂的双金属Ti-Fe MOFs在500℃的空气气氛中直接热解制备N掺杂TiO2-Fe2O3/C纳米结构。获得的产物显示出独特的树枝状结构,且具有较大比表面积和良好的介孔结构。同时,红外光谱(FT-IR)和X射线光电子能谱(XPS)结果证实,在空气条件下煅烧后,衍生物仍保留了N和C成分。此外,将制备的N掺杂树枝状双金属结构多孔材料作为光催化剂用于降解亚甲基蓝(MB)染料。结果表明:N掺杂TiO2-Fe2O3/C比N掺杂非Fe参与的TiO2/C和非N非Fe掺杂TiO2/C具有更好的光催化性能,且N掺杂TiO2-Fe2O3/C对MB染料的有效降解率达到81%。
In order to find a simple synthesis path of photocatalyst with well-developed pore structure to enhance and broaden its photocatalytic application,in this study,a novel N-doped TiO2-Fe2O3/C nanostructure was prepared by direct pyrolysis of N-doped bimetallic Ti-Fe MOFs at 500℃ directly in air atmosphere.The obtained products displayed a unique dendritic structure with large surface area and well-developed mesoporous structures.Meanwhile,FT-IR and XPS results confirmed that the derivatives were still retain N and C components after calcination in air condition.Moreover,the prepared N-doped dendritic bimetallic porous material was used as a photocatalyst to degrade methylene blue (MB) dye.Th results showed that N-doped TiO2-Fe2O3/C exhibited better photocatalytic performance than that of N-doped TiO2/C without Fe and TiO2/C without both N and Fe doping,and the effective degradability of N-doped TiO2-Fe2O3/C for MB dye reached 81%.
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基金资助
湖北省自然科学基金项目(2022CFB397);湖北省教育厅科学技术研究计划指导性项目(B2023335);武昌工学院校级科学研究重点项目(2022ZLZ02)
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