High efficiency bi-harvesting light/vibration energy using piezoelectric zinc oxide nanorods for dye decomposition
2019; Elsevier BV; Volume: 62; Linguagem: Inglês
10.1016/j.nanoen.2019.05.058
ISSN2211-3282
AutoresJiangping Ma, Jing Ren, Yanmin Jia, Zheng Wu, Lin Chen, Neale O. Haugen, Haitao Huang, Yongsheng Liu,
Tópico(s)Gas Sensing Nanomaterials and Sensors
ResumoIn this work, the bi-harvesting of light and vibration energy is realized in hydrothermally-synthesized ZnO nanorods which is designed to achieve photo-/piezo-bi-catalysis for dye decomposition. In the presence of both UV irradiation and vibration, the decomposition ratio of ZnO nanorods for acid orange 7 is ∼80.8% within 100 min, which is higher than the value of ∼56.7% for photo-catalysis or the value of ∼31.8% for piezocatalysis. The enhanced photo-/piezo-bi-catalysis of ZnO nanorods in dye decomposition can be attributed to that the piezoelectric potential which formed in piezocatalysis process can help separate the photogenerated electron-hole pairs, therefore achieving a synergy effect between photocatalysis and piezocatalysis. The excellent photo-/piezo-bi-catalysis of ZnO can potentially find application in enhancing catalytic efficiency of dye decomposition through harvesting the light and vibration energy present in natural environments.
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