Preparation Of Azachar From Rice Husk And Its Catalytic Performance

In today's world,energy is being consumed in large quantities,and some resources are not being used properly.We need to explore more new materials to replace traditional resources.Fuel cells are being widely used,but the large use of precious metal platinum is a key factor hindering its better development,so it is necessary to explore a cheap,simple,efficient and readily available green catalyst to replace it.The current research direction is non-precious metal catalyst research,in order to find an electrocatalyst to replace the Pt electrode,the research found that nitrogen-carbon is an ideal substitute material,because the nitrogen-carbon has high catalytic activity,low cost,and environmental protection.,so it has a great advantage to replace the Pt catalyst,and can be applied to the actual.The mesoporous carbon material has very well-ordered mesoporous,unconventional pore structure and very high specific surface area,and easy availability of raw materials,easy operation and energy conservation,which has attracted a lot of attention in the society.In this paper,we prepared a lignin carbon source and a carbon sphere carbon source from rice husks,and prepared a nitrogen-carbon-coated cobalt catalyst using powdered rice husk carbon as a carbon source,which not only has good properties in reducing p-nitroaniline.The catalytic performance also has a good effect on the oxygen reduction reaction of the fuel cell.The effects of different HCl concentrations and different hydrothermal temperatures on the formation of rice husk charcoal were investigated.Using rice husk as raw material,experiment with different concentrations of HCl at different hydrothermal temperatures,find the optimal reaction conditions for the rice hull to be hydrolyzed and not carbonized,and obtain rice slag and carbohydrate mother liquor,and then separately After hydrothermal treatment,two different carbon sources are obtained.We prepared a nitrogen-cobalt-coated cobalt catalyst by a novel method.The method uses rice husk as raw material to mix with melamine,oxalic acid and cobalt nitrate to prepare different proportions of cobalt oxalate precursor.The preparation of a nitrogen-carbon-coated cobalt catalyst by activating the precursor at 800 0 C has a very good effect in reducing the catalytic degradation of p-nitroaniline.We know that the electrochemical hydrogen evolution reaction(HER),oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)are all prepared for fuel cells.The aza carbon-coated cobalt catalyst prepared from rice husk and melamine has a very good application in the field of electrochemical oxygen reduction reaction.Aza carbon-coated cobalt catalyst is a good catalytic material for oxygen reduction reaction.It can be used in the research of fuel cells,especially in the case of fuel cells in recent years,and vigorously develop aza-carbon catalyst prepared from rice husk.Has a very far-reaching significance.We also studied the synthesis of Ni-doped MOS2 nanosheets grown on stainless steel grids by hydrothermal method.Through a series of analytical characterizations,we found that it is feasible to use a low-cost stainless steel mesh as a substrate for electrocatalysts for electrolysis of water.It exhibits excellent HER performance in alkaline media and can be used to develop high performance dual function electrocatalysts for electrolyzed water.