论文标题
一种新型的单模微波辅助合成金属氧化物作为可见光光催化剂
A Novel Single-Mode Microwave Assisted Synthesis of Metal Oxide as Visible-light Photocatalyst
论文作者
论文摘要
可见光的光催化剂二氧化钛（TIO2）通过新颖且齐全的单模微波辅助合成过程成功制备。在此一步合成中，Ti在整个快速加热过程中作为磁场中选择性氧化物的目标材料，其过程需要更少的能耗和短时间。在获得的TiO2中，确认了Ti3+的自兴奋剂，这使得TiO2在波长高于400 nm的波长的可见区域中进行了足够的光吸收。这样的Ti3+自载TiO2表现出与化学计量TIO2（3.0-3.2 eV）相比，具有较窄的光学带隙（2.14 eV）。合成的TIO2还显示出优质的光催化活性，可在可见光照射下降解若丹明B的降解。
Visible-light photocatalyst titanium dioxide (TiO2) was successfully prepared via a novel and facile single-mode microwave assisted synthesis process. In this one-step synthesis, Ti as target material selectively oxides in magnetic field throughout rapid heating, whose process requires less energy consumption and short time. In obtained TiO2, self-doping of Ti3+ was confirmed, which makes TiO2 performed sufficient light absorption in visible region with wavelength above 400 nm. Such Ti3+ self-doped TiO2 exhibits much narrower optical bandgap (2.14 eV) to compare with stoichiometric TiO2 (3.0-3.2 eV). The synthesized TiO2 also shows superior photocatalytic activity to commercially available TiO2 towards the degradation of Rhodamine B under visible light irradiation.
