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Zn/ZnO Heterostructure for the Application of MO Degradation and NO Removal
- Source :
- Catalysis Letters. 150:1985-1992
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- In this work, Zn/ZnO composite photocatalyst was successfully synthesized by simple hydrothermal method. Photocurrent test shows that the presence of Zn can effectively improve the light response of composites. Electrochemical impedance spectroscopy indicates that Zn/ZnO has higher point and separation efficiency and faster carrier transmission. Degradation tests of methyl orange showed that Zn/ZnO had higher degradation efficiency than commercial ZnO. In the same time, Zn/ZnO can degrade nearly 90% of methyl orange, while commercial zinc oxide has less than 10%. Meanwhile, the photocatalyst synthesized in the test of photocatalytic removal of NO also shows higher photocatalytic activity. Compared with commercial ZnO, which removed 48% of NO in 20 min, Zn/ZnO could remove 74% of NO in 8 min, and NO will be further oxidized to NO3− after being oxidized to NO2, which can effectively reduce secondary pollution in the reaction process. These results indicate that Zn/ZnO composite photocatalysts have high photocatalytic activity in both solid–liquid and gas–solid systems. Photodegradation of MO (a), and NO removal (b) photocatalytic mechanism of Zn/ZnO under irradiation.
- Subjects :
- Photocurrent
010405 organic chemistry
Chemistry
chemistry.chemical_element
General Chemistry
Zinc
010402 general chemistry
01 natural sciences
Catalysis
0104 chemical sciences
Dielectric spectroscopy
chemistry.chemical_compound
Photocatalysis
Methyl orange
Degradation (geology)
Photodegradation
Nuclear chemistry
Subjects
Details
- ISSN :
- 1572879X and 1011372X
- Volume :
- 150
- Database :
- OpenAIRE
- Journal :
- Catalysis Letters
- Accession number :
- edsair.doi...........3165949e9be98c9abe5cac6a5c90062a