|
| Preparation and Photocatalytic Hydrogen Evolution from Water of Oxygen Doped Carbon Nitride Nanosheets |
| Author Name | Affiliation | E-mail | | ZHU Kai | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | | | OUYANG Jie | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | | | LIU Jia-Man | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | | | ZHU Yu-Xin | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | | | ZENG Qian | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | | | CUI Yan-Juan | School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212008, China | yjcui@just.edu.cn |
|
| Abstract: Oxygen-doped carbon nitride nanosheets catalyst (CNO) was synthesized by two-step thermal polymerization method using oxalic acid as oxygen source, melamine and urea as raw materials. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible absorption spectroscopy (UV-Vis), X-ray photoelectron spectroscopy (XPS), fluorescence spectroscopy (PL), and electrochemical measurements were carried out to characterize and analyze the structures of catalysts. The photocatalytic reduction properties of CNO were tested by H2 production from water splitting under visible light irradiation. The results showed that O elements directly replaced N in the triazine ring structure and bonded to the sp2 hybridized carbon to form CNO. The CNO showed good layered structure, improved absorption of visible light, and lowered band gap. Due to the O doping, the separation and transmission of photogenerated electron-hole pairs were accelerated. Under visible light irradiation, the hydrogen generation rate from water by CNO was greatly enhanced and the evolution rate was up to 88.6 μmol·h-1, which was 3.91 times as undoped CN. |
| Keywords: carbon nitride oxygen doping photocatalysis hydrogen generation |
| Hits: 2014 |
| Download times: 907 |
| ZHU Kai,OUYANG Jie,LIU Jia-Man,ZHU Yu-Xin,ZENG Qian,CUI Yan-Juan.Preparation and Photocatalytic Hydrogen Evolution from Water of Oxygen Doped Carbon Nitride Nanosheets[J].Chinese Journal of Inorganic Chemistry,2019,35(6):1005-1012. |
| View Full Text View/Add Comment Download reader |
|
|
|
|
|
|
|
|
