التفاصيل البيبلوغرافية
| العنوان: |
Photochemical growth of nanoporous SnO2at the air–water interface and its high photocatalytic activityElectronic supplementary information (ESI) available: Further experimental details and supplementary figures. See DOI: 10.1039/b926930d. |
| المؤلفون: |
Hongjuan Wang, Fengqiang Sun, Yu Zhang, Laisheng Li, Hongyu Chen, Qingsong Wu, Jimmy C. Yu |
| المصدر: |
Journal of Materials Chemistry; 7/21/2010, Vol. 20 Issue 27, p5641-5645, 5p |
| مستخلص: |
Nanoporous SnO2containing two types of porous structures has been prepared at the air–water interface by a new photochemical route. This room temperature method is surfactant- and template-free, low-cost, and high-yield. Only SnSO4and diluted H2SO4aqueous solution were used as precursors. Under ultraviolet (UV) light irradiation, Sn2+absorbs photons to produce metallic tin and stannic ions. The metallic tin reacts immediately with oxygen in the air to form SnO2. Meanwhile, a small amount of tin can also react with H2SO4and is dissolved in the solution to form one type of nanoporous structure. The stannic ions are converted to insoluble H2SnO3which dehydrates to form the other type of porous SnO2structure during the subsequent drying process. The as-prepared porous SnO2has higher photocatalytic activity than Degussa P25 for degrading methyl orange (MO) solution under the irradation of a xenon lamp. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
