Titanium Oxide/Silicon Moth-Eye Structures with Antireflection, p-n Heterojunctions, and Superhydrophilicity.
By employing KOH etching of silicon and hydrothermal growth of titanium oxide (TiO2), TiO2nanorods assembled on the silicon micropyramids to form biomimetic composite coating, similar to moth-eye structures. The biomimetic composite coating possessed not only the micro-nano hierarchical structures but also the p-n heterojunctions, resulting in a decrease in the reflection of incident light and an increase in the separation efficiency of photogenerated carriers. Meanwhile, the structures showed excellent superhydrophilicity, making for the self-cleaning of the material surface. We further demonstrate that by exploiting the advantages of this method, the application of such structures in the photocatalysis field is thus straightforward.
Gang
G
Shi
Jie
J
Chen
Likui
L
Wang
Dawei
D
Wang
Jingguo
J
Yang
Ying
Y
Li
Liping
L
Zhang
Caihua
C
Ni
Physikalisches Institut and Center for Nanotechnology (C198eNTech), Westfälische Wilhelms-Universität Münster , Münster D-48149, Germany.|Institute of Functional Nano & Soft Materials (FUNSOM) and Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices; Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, China.
Lifeng
L
Chi