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Influence of carbon content on photocatalytic performance of C@ZnO hollow nanospheres
- Source :
- Materials Research Express. 5:025001
- Publication Year :
- 2018
- Publisher :
- IOP Publishing, 2018.
-
Abstract
- Mesoporous C@ZnO hollow spheres were successfully synthesized through a carbon-sphere template combined hydrothermal method. The photocatalytic activities of the samples to rhodamine B (RhB) were investigated, and the sample of 3 wt% carbon has the best photocatalytic activity to RhB. The excellent photocatalytic performance could come from both enhanced photogenerated electron–hole pair separation, and the larger specific surface area induced by mesoporous hollow nanostructure. The photocatalytic performance sensitively depends upon content of amorphous carbon. Too much or too little carbon content decreases sample performance. The changes in performance according to carbon content are probably a result of the competing mechanism: the increasing rate of separation efficiency of photogenerated carriers and the decreasing contact area of ZnO with RhB according to the carbon content. This work would help us to better understand the important roles of carbon content in the fabricated nano-heterojunctions and also provide us with a feasible route to improve UV photocatalytic activities of ZnO and other metal oxides greatly.
- Subjects :
- Nanostructure
Materials science
Polymers and Plastics
Metals and Alloys
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Hydrothermal circulation
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
chemistry.chemical_compound
chemistry
Amorphous carbon
Chemical engineering
Specific surface area
Rhodamine B
Photocatalysis
0210 nano-technology
Mesoporous material
Carbon
Subjects
Details
- ISSN :
- 20531591
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Materials Research Express
- Accession number :
- edsair.doi...........eab6ee0164d22598ce3c647cea016cfa