|
Preparation and Oxygen Catalytic Performance of g-C3N4/Double Perovskite Composites |
Author Name | Affiliation | E-mail | WANG Cheng | Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, Guilin University of Technology, Guilin, Guangxi 541004, China | | HUANG Hong-Xia | Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, Guilin University of Technology, Guilin, Guangxi 541004, China | hhxhunan@126.com | XIAO Yang | Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, Guilin University of Technology, Guilin, Guangxi 541004, China | | LIANG Da-Ming | Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, Guilin University of Technology, Guilin, Guangxi 541004, China | |
|
Abstract: Double perovskite Sr2NixCo2-xO6 (x=0.2, 0.4, 0.6, 0.8) with different Ni doping ratios were prepared by sol-gel method,and nanoparticles g-C3N4 with layered structure was prepared by thermal decomposition. Synthesis of double perovskite and g-C3N4 composite that were used as bifunctional catalysts, which were prepared into bifunctional electrodes, and used to test its catalytic activity for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). Then, the doping ratio (x=0.4) of Ni in double perovskite with the best oxygen catalytic activity was selected to be composited with a certain weight ratio of g-C3N4, testing the catalytic activity of the composite catalysts. The results show that the composite catalysts were obviously better than the single catalysts. When the amount of g-C3N4 added was 30% of the mass of the double perovskite, the maximum current densities of the catalytic ORR was 395.7 mA·cm-2 (-0.6 V vs Hg/HgO), the catalytic OER was 372.0 mA·cm-2 (1 V vs Hg/HgO). This indicates that the synergistic catalysis of g-C3N4 and Sr2Ni0.4Co1.6O6 could improve the catalytic activity of the double perovskite. |
Keywords: double perovskite g-C3N4 oxygen catalysis bifunctional oxygen electrode |
Hits: 1676 |
Download times: 656 |
WANG Cheng,HUANG Hong-Xia,XIAO Yang,LIANG Da-Ming.Preparation and Oxygen Catalytic Performance of g-C3N4/Double Perovskite Composites[J].Chinese Journal of Inorganic Chemistry,2019,35(2):254-262. |
View Full Text View/Add Comment Download reader |
|
|
|
|
|