论文标题
TiO2具有一步单模磁微波诱导等离子体处理的超窄带隙
TiO2 with Super Narrow Bandgap Achieved in One-Step Single-Mode Magnetic Microwave Induced Plasma Treatment
论文作者
论文摘要
具有超窄带隙（1.1 eV〜）的TIO2通过简便而新颖的单步磁微波诱导的血浆处理成功合成。在获得的TiO2上有选择性地表面Ti3+掺杂作为捕获中心，该中心显着限制了光启用的载体重组并实现可见光光催化性能的增强。另外，在一步反应期间，Tiox的表面化学组成精确地在1.19 <x <1.92的区域中得到控制。详细的XPS分析表明，即使在氧化大气和光催化反应中，表面形成的Ti3+也表现出高度热/化学稳定性。
TiO2 with super narrow bandgap (1.1 eV~) are successfully synthesized via a facile and novel one-step single-mode magnetic microwave induced plasma treatment. The selectively surface Ti3+-doping on obtained TiO2 as trapping centers which significantly restrain the photo-excited carrier recombination and achieve the enhancement of visible-light photocatalytic performance. In addition, the surface chemical composition of TiOx is precisely controlled in a wide region of 1.19 < x < 1.92 during one-step reaction. A detailed XPS analysis reveals that the surface formed Ti3+ shows highly thermal/chemical stability even through high-temperature treatment (~800 oC) in oxidative atmosphere and photocatalytic reaction.
