Transparent Glass with the Growth of Pyramid-Type MoS2 for Highly Efficient Water Disinfection under Visible-Light Irradiation
| Autor: | Yanqing Guan, Hu Xianbiao, Richard Nözel, Lingling Shui, Xingsen Gao, Qingwei Zhou, Jun-Ming Liu, Xin Wang, Guofu Zhou, Zhang Zhang, Shaoqiang Su, Pengfei Cheng, Mingliang Jin |
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| Rok vydání: | 2018 |
| Předmět: |
Sunlight
Materials science Band gap business.industry food and beverages 02 engineering and technology Chemical vapor deposition 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Pyramid Photocatalysis Optoelectronics General Materials Science Nanometre Water disinfection 0210 nano-technology business Visible spectrum |
| Zdroj: | ACS Applied Materials & Interfaces. 10:23444-23450 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | Water disinfection is of great importance for human health and daily life. Photocatalysts with high efficiency, environmental protection, and narrow bandgaps are critical for practical water treatment. Here, a general approach is reported for the direct growth of pyramid-type MoS2 (pyramid MoS2) on transparent glass by chemical vapor deposition (CVD). The pyramid MoS2 exhibits a smaller bandgap and higher bactericidal activity than most TiO2-based photocatalysts. The adjustable-bandgap nature of two-dimensional (2-D) MoS2 can harvest a wide spectrum of sunlight and provide more active sites with which to generate reactive oxygen species (ROS) for bacterial death in water. Furthermore, silver (Ag) with several nanometers thicknesses is thermally evaporated on the pyramid MoS2, which can greatly facilitate electron–hole pair separation to generate more ROS and has a certain bactericidal effect. With our established approach, under simulated visible light, more than 99.99% of Escherichia coli can be successf... |
| Databáze: | OpenAIRE |
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