Preparation of phosphorus-doped carbon nanospheres and their electrocatalytic performance for O2 reduction |
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| Authors: | Ziwu Liu Feng Peng Hongjuan Wang Hao Yu Wenxu Zheng Xianyong Wei |
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| Institution: | School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Key Laboratory of Coal Processing and Ef f icient Utilization(Ministry of Education),China University of Mining & Technology,Xuzhou 221008,Jiangsu,China;3.Institute of Biomaterial & College of Science,South China Agricultural University,Guangzhou 510642,Guangdong,China |
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| Abstract: | Phosphorus-doped carbon nanospheres without any metal residues were synthesized and characterized.The results revealed that the doping phosphorus atoms could significantly improve the electrocatalytic activity of graphitic carbon for the oxygen-reduction reaction(ORR) both in acidic and alkaline media,and the materials exhibited high electrocatalytic activity,long-term stability,and excellent tolerance to crossover effects especially in alkaline media.Quantum mechanics calculations with the density functional theory demonstrated that the changes in charge density and energetic characteristics of frontier orbitals for the P-doped graphene sheet could facilitate the ORR. |
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| Keywords: | arbon nanosphere oxygen reduction electrocatalysis carbon catalysis phosphorus doping |
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