Preparation And Catalytic Performance Of Non-noble Metal Catalysts Containing Carbon

The design of new catalytic materials can effectively improve the efficiency of energy utilization and promote the development of green chemistry.Carbon materials are often used as substrate materials because of their excellent electrical conductivity.Coupling of non-noble metal functional structure with carbon substrate material can effectively improve the catalytic performance of composites.In this paper,a high performance carbon containing non-noble metal catalyst was synthesized by a simple and effective method to improve the dispersity and electron transfer rate of non-noble metal materials,and its redox activity and degradation performance of refractory organic pollutants were investigated.The main contents of this paper are as follows:（1）Iron phthalocyanine（Fe Pc）catalytic material with Fe loading up to 6.5wt%was prepared by one-step pyrolysis and loaded on go nanosheets by microwave irradiation.Fe atoms was provided by Fe Cl₃,with the graphene oxide nanometer piece of coordination effect,the combination of elution Fe Pc skeleton,it will Fe Pc fixed to the graphene oxide nanoparticles on a chip,thus effectively avoid the Fe Pc between particles together,at the same time using graphene oxide nanometer piece of high specific surface area increased Fe Pc in dispersion of carbon substrates.In 0.1 M KOH electrolyte solution,4 e^-transfer redox reaction（ORR）was achieved with an initial potential of-0.025 V.In addition,Fe Pc Ns@GO had good cyclic stability.（2）Fe Pc/ERGO was prepared by preparing functionalized graphene oxide sheets（ERGO）and using microwave irradiation method.In alkaline solution,Fe Pc/ERGO had good ORR performance,which was better than 20 wt%commercial Pt/C.Fe Pc/ERGO showed better methanol resistance and toxicity resistance.It provides a new method for non-noble metal catalyst to replace noble metal catalyst.（3）MoS₂/rGO/Bi₂S₃ heterojunction composite catalytic material was prepared by hydrothermal synthesis method.The photocatalytic fuel cell system was designed and constructed by using MoS₂/rGO/Bi₂S₃ heterojunction composite catalytic material as cathode,and the degradation performance of tetracycline hydrochloride（TC）and berberine hydrochloride（BEC）was investigated.The degradation rate of TC and BEC reached 97.7%（60 min）and 94.1%（90min）,respectively,under different p H conditions,which broadened the application of non-noble metal catalysts containing carbon.（4）The Z-scheme heterojunction ternary composite catalyst g-C₃N₄/Zn O/Bi₄O₅Br₂ was prepared by combining non-noble metal zinc and bismuth with C-N substrate.The catalyst was used as the cathode and the electricity-generating shiva bacteria as the anode to construct the microbiological coupled photocatalytic fuel cell system（MPFC）.Organic pollutants TC and rhodamine B（Rh B）were degraded.Compared with Zn O,Zn O/Bi₄O₅Br₂ and g-C₃N₄/Zn O catalysts,the performances of the catalysts are better than those of mono and binary catalysts.By constructing z-type heterojunction structure,the efficiency of electron transfer and utilization can be improved effectively,and the efficiency of pollutant degradation can be improved.