Photocatalytic H2evolution under visible light irradiation is an ideal process for solving energy shortage.The low cost of photocatalysts and high efficiency of hydrogen evolution are the two key factors to realize th...Photocatalytic H2evolution under visible light irradiation is an ideal process for solving energy shortage.The low cost of photocatalysts and high efficiency of hydrogen evolution are the two key factors to realize the industrialization of the process.The substitution of a noble‐metal cocatalyst with a non‐noble‐metal catalyst can significantly reduce the cost of the photocatalyst.The largescale synthesis and assembly of semiconductors and non‐noble‐metal cocatalysts to form photocatalysts through a simple method can further decrease the cost of photocatalysis.Here,we report a large‐scale and low‐cost coprecipitation method to form phosphide/CdS photocatalysts to realize photocatalytic H2evolution.CoP and MoP cocatalysts significantly enhanced the photocatalytic production of hydrogen.The optimal H2production rates on CoP/CdS and MoP/CdS were140and78μmol/h,which were7.0and4.0times higher than those obtained with bare CdS,respectively,and2.0times and1.1times higher than those obtained with1.0%Pt/CdS,respectively.This work provides a practical method for the large‐scale preparation of low‐cost photocatalysts.展开更多
The reactive precipitation process of procaine benzylpenicillin is reviewed, while such secondary processes as ageing, agglomeration, breakage, and the effects of operation parameters on crystal size are emphasized. I...The reactive precipitation process of procaine benzylpenicillin is reviewed, while such secondary processes as ageing, agglomeration, breakage, and the effects of operation parameters on crystal size are emphasized. In the reactive precipitation the ageing of particles has a little effect on the process, while the greater effect comes from the agglomeration and breakage of particles, furthermore, the mixing has also notable influence on the product size. All of these provide the bases for further study on reactive precipitation.展开更多
基金supported by the National First-rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology)the Major Innovation Projects for Building First-class Universities in China’s Western Region (ZKZD2017003)+2 种基金the University Research Project of Ningxia (NGY2015027)the National Natural Science Foundation of China (21263018)the Project of Science and Technology of Personnel of Study Abroad (Ningxia (2014) 486)~~
文摘Photocatalytic H2evolution under visible light irradiation is an ideal process for solving energy shortage.The low cost of photocatalysts and high efficiency of hydrogen evolution are the two key factors to realize the industrialization of the process.The substitution of a noble‐metal cocatalyst with a non‐noble‐metal catalyst can significantly reduce the cost of the photocatalyst.The largescale synthesis and assembly of semiconductors and non‐noble‐metal cocatalysts to form photocatalysts through a simple method can further decrease the cost of photocatalysis.Here,we report a large‐scale and low‐cost coprecipitation method to form phosphide/CdS photocatalysts to realize photocatalytic H2evolution.CoP and MoP cocatalysts significantly enhanced the photocatalytic production of hydrogen.The optimal H2production rates on CoP/CdS and MoP/CdS were140and78μmol/h,which were7.0and4.0times higher than those obtained with bare CdS,respectively,and2.0times and1.1times higher than those obtained with1.0%Pt/CdS,respectively.This work provides a practical method for the large‐scale preparation of low‐cost photocatalysts.
文摘The reactive precipitation process of procaine benzylpenicillin is reviewed, while such secondary processes as ageing, agglomeration, breakage, and the effects of operation parameters on crystal size are emphasized. In the reactive precipitation the ageing of particles has a little effect on the process, while the greater effect comes from the agglomeration and breakage of particles, furthermore, the mixing has also notable influence on the product size. All of these provide the bases for further study on reactive precipitation.
