用于氧还原反应(ORR)的氮磷共掺杂铁基生物质炭催化剂制备及性能研究  

Preparation and performance of iron-based biomass carbon catalysts co-doped with nitrogen and phosphorus for oxygen reduction reactions

作　　者：杜傲宇 戴淼柔 李涛 李杰 王智瑾 刘运权 Du Ao-yu;Dai Miao-rou;Li Tao;Li Jie;Wang Zhi-jin;Liu Yun-quan(College of Energy,Xiamen University,Fujian Xiamen 361102,China)

机构地区：[1]厦门大学能源学院,福建厦门361102

出　　处：《炭素技术》2024年第2期28-35,共8页Carbon Techniques

基　　金：福建省经信委2016年省级企业技术创新专项资金(闽经信计财[2016]411号)。

摘　　要：以废弃生物质甘蔗渣为碳源,植酸作为活化剂和磷源,三聚氰胺作为氮源,采用先水热后共热解的方法制备了氮磷共掺杂的铁基生物质炭催化剂(N,P-FeBMC)。对制得的催化剂进行了XRD、Raman、SEM、BET和XPS等表征,并对其电催化性能进行了测试。结果表明:引入植酸进行水热处理可使制得的蔗渣炭呈微球形貌;与三聚氰胺混合后共热解得到的材料具有丰富的微孔及介孔结构,其比表面积可达911 m^(2)/g。此外,由于氮和磷共同被掺入碳的晶格中,故能提供丰富的活性位点。实验测得N,P-FeBMC催化剂的半波电位为0.913 V,比商业Pt/C高约18 mV。此外,该催化剂还表现出较好的耐久性和耐甲醇性,表明蔗渣生物质是一种潜在的可用于制备高性能炭材料的原料。Iron-based biomass carbon(N,P-FeBMC) catalysts co-doped with nitrogen and phosphorus were prepared through the hydrothermal treatment followed by co-pyrolysis with bagasse as the carbon source, phytic acid as the activator and phosphorus source, and melamine as the nitrogen source.The prepared catalysts were characterized with XRD,Raman, SEM,BET and XPS,and their electrocatalytic performance was also tested.The results show that bagasse carbon can be made in the form of microspheres through introducing phytic acid for hydrothermal treatment.After co-pyrolysis with melamine, the material further possesses rich microporous and mesoporous structure, having a specific surface area of 911 m^(2)/g.With the successful co-doping of nitrogen and phosphorus into the crystal lattice of carbon, the catalyst generates a lot of active sites.The half-wave potential of N,P-FeBMC catalyst is 0.913 V,which is about 18 mV higher than that of commercial Pt/C.In addition, the catalyst also shows good durability and methanol resistance, indicating that bagasse as a biomass is a potential material for preparing high-performance carbons.

关 键 词：生物质 甘蔗渣 炭微球 磷氮共掺杂 氧还原催化剂 

分 类 号：TQ426[化学工程]