当前位置: X-MOL 学术Prog. Nat. Sci. Mater. Int. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Array of single crystalline anatase TiO2 nanotubes with significant enhancement of photoresponse
Progress in Natural Science: Materials International ( IF 4.7 ) Pub Date : 2021-07-03 , DOI: 10.1016/j.pnsc.2021.06.003
Lvchao Qiu 1 , Ke Fang 2 , Yubo Li 3 , Shutao Huang 1 , Guanxing Li 2 , Songda Li 1 , Hu He 1 , Wentao Yuan 2 , Hangsheng Yang 1 , Wei Tian 4 , Yong Wang 1, 2
Affiliation  

Anatase TiO2 nanotubes array (ATONA) has attracted tremendous attention owing to its promising applications in solar cells, water splitting and organic pollutants photocatalytic degradation. However, the activity of ATONAs was greatly suppressed by the grain boundaries existed in the tube walls, which acted as carrier scattering and recombination centers. Herein, we report a novel strategy to prepare array of single crystalline anatase TiO2 nanotubes (SC-ATONAs) with significant enhancement of the photocatalytic activity and UV photo response performance compared to the polycrystalline counterparts. The growth of SC-ATONAs was achieved by establishing a crystallization temperature gradient along the tube wall, which ensured the crystallization started from the nucleation of a single nucleus at the bottom of amorphous TiO2 nanotubes prepared by Ti anodization. These findings pave the way to prepare single-crystalline nanotubes with superior performance for other materials.



中文翻译:

显着增强光响应的单晶锐钛矿 TiO2 纳米管阵列

锐钛矿TiO 2纳米管阵列(ATONA)由于其在太阳能电池、水分解和有机污染物光催化降解方面的有前景的应用而引起了极大的关注。然而,ATONA的活性被管壁中存在的晶界大大抑制,晶界作为载流子散射和复合中心。在此,我们报告了一种制备单晶锐钛矿 TiO 2阵列的新策略与多晶对应物相比,纳米管(SC-ATONA)具有显着增强的光催化活性和紫外线光响应性能。SC-ATONA 的生长是通过沿管壁建立结晶温度梯度来实现的,这确保了从Ti 阳极氧化制备的无定形 TiO 2纳米管底部单核的成核开始结晶。这些发现为制备对其他材料具有优异性能的单晶纳米管铺平了道路。

更新日期:2021-09-08
down
wechat
bug