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Three-dimensional Fe 2 O 3 –TiO 2 –graphene aerogel nanocomposites with enhanced adsorption and visible light-driven photocatalytic performance in the removal of RhB dyes
Journal of Industrial and Engineering Chemistry ( IF 6.1 ) Pub Date : 2018-05-01 , DOI: 10.1016/j.jiec.2017.12.040
Jing-Jie Zhang , Pan Qi , Jie Li , Xiu-Cheng Zheng , Pu Liu , Xin-Xin Guan , Guang-Ping Zheng

Abstract A series of Fe2O3 and TiO2 co-doped graphene aerogel (Fe2O3–TiO2–GA) nanocomposites with a unique 3D architecture are assembled by a one-pot hydrothermal method combined with freeze-drying. The one with 30 wt% Fe2O3 exhibits the highest adsorptivity (95.0%) and the another with 25 wt% Fe2O3 displays the highest total efficiency (97.7%) including adsorption and visible light-driven photocatalytic degradation for rhodamine B dyes (20.0 mg L−1, 25 mL) within 1 h over 5.0 mg of the nanocomposites. The materials also display satisfactory cyclic stability and the removal efficiency can be 81.8% even after four runs. Additionally, a related photocatalytic mechanism is proposed.

中文翻译:

三维Fe 2 O 3 –TiO 2 –石墨烯气凝胶纳米复合材料在去除RhB染料中具有增强的吸附和可见光驱动的光催化性能

摘要 一系列具有独特 3D 结构的 Fe2O3 和 TiO2 共掺杂石墨烯气凝胶 (Fe2O3-TiO2-GA) 纳米复合材料通过一锅水热法结合冷冻干燥组装而成。含有 30 wt% Fe2O3 的一种表现出最高的吸附率(95.0%),另一种含有 25 wt% Fe2O3 的表现出最高的总效率(97.7%),包括对罗丹明 B 染料(20.0 mg L−)的吸附和可见光驱动的光催化降解1, 25 mL) 在 1 小时内超过 5.0 mg 纳米复合材料。该材料还显示出令人满意的循环稳定性,即使经过四次运行,去除效率也可以达到 81.8%。此外,还提出了相关的光催化机制。
更新日期:2018-05-01
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