Controlled preparation of P-doped g-C3N4 nanosheets for efficient photocatalytic hydrogen production

• 作 者: Qiachun Lin Zesheng Li Tingjian Lin Bolin Li Xichun Liao Huiqing Yu Changlin Yu
• 机 构: College of Chemistry, Guangdong University of Petrochemical Technology, Maoming 525000, China
• 出 处: 中国化学工程学报（英文版）
• 发表日期: 2004年期
• 关键词: Graphitic carbon nitride P-doping Carbon defect Pt co-catalyst Hydrogen evolutio

Hydrogen production by photolysis of water by sunlight is an environmentally-friendly preparation technology for renewable energy.Graphitic carbon nitride (g-C3N4),despite with obvious catalytic effect,is still unsatisfactory for hydrogen production.In this work,phosphorus element is incorporated to tune g-C3N4\'s property through calcinating the mixture of g-C3N4 and NaH2PO2.sacrificial agent and co-catalyst also been supplied to help efficient photocatalytic hydrogen production.Phosphorus (P) doped g-C3N4 samples (PCN-S) were prepared,and their catalytic properties were studied.X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS),scanning electron microscopy (SEM) and ultraviolet diffuse reflection (UV-DRS) were used to study their structures and morphologies.The results show that the reaction rate of PCN-S is 318 μmol.h-1 ·g-1,which is 2.98 times as high as pure carbon nitride nanosheets (CN) can do.Our study paves a new avenue,which is simple,environment-friendly and sustainable,to synthesize highly efficient P doping g-C3N4 nanosheets for solar energy conversion.