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Synthesis of the 0D/3D CuO/ZnO Heterojunction with Enhanced Photocatalytic Activity
- Source :
- The Journal of Physical Chemistry C. 122:9531-9539
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Construction of heterojunctions has aroused great interest recently in the photocatalysis field because of the special electronic band structure and unique physicochemical properties. In this work, a novel 0D/3D CuO/ZnO heterojunction was obtained via in situ deposition of CuO nanoparticles on the flowerlike ZnO surface using the wet chemistry method. After depositing CuO nanoparticles onto the ZnO, the CuO/ZnO heterojunction exhibits enhanced visible-light harvesting and effective separation of the photogenerated electron–hole pairs compared with those in the pure ZnO. The photocatalytic removal efficiency of phenol over the CuO/ZnO heterojunction is up to 78% under the irradiation of the light, which is ∼2 and ∼4 times higher than those of the pristine ZnO and CuO, respectively. This composite also presents good durability and stability for phenol degradation in the photocatalytic reactions. Additionally, in the photodegradation system of the CuO/ZnO heterojunction, the superoxide radicals (•O2–) and hy...
- Subjects :
- Materials science
Composite number
Heterojunction
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
General Energy
Chemical engineering
chemistry
Photocatalysis
Phenol
Physical and Theoretical Chemistry
0210 nano-technology
Electronic band structure
Photodegradation
Wet chemistry
Deposition (law)
Subjects
Details
- ISSN :
- 19327455 and 19327447
- Volume :
- 122
- Database :
- OpenAIRE
- Journal :
- The Journal of Physical Chemistry C
- Accession number :
- edsair.doi...........7ff4bb5957f205d43228b214bc274a59