稻壳基多孔炭负载非贵金属(Fe/Co/Ni)复合材料的制备及在电催化氧化肼中的应用  

Preparation of rice husk based porous carbon supported non-noble metal(Fe/Co/Ni)composite and its application in electrocatalytic oxidation of hydrazine

作　　者：隋光辉 SUI Guang-hui(Department of Chemistry and Food Science,Nanchang Normal University,Nanchang 330032,China)

机构地区：[1]南昌师范学院化学与食品科学学院,江西南昌330032

出　　处：《化学研究与应用》2025年第2期327-334,共8页Chemical Research and Application

基　　金：南昌师范学院博士科研启动基金(NSBSJJ2019003,NSBSJJ2019005)资助;南昌师范学院校级科技项目(23XJZR02)资助。

摘　　要：本文以稻壳基多孔炭为载体,采用硼氢化钠为还原剂,制备了非贵金属负载复合材料,即Fe-AC、Co-AC和Ni-AC。采用XRD、SEM、BET和XPS分别表征复合材料的物理化学性质。将复合材料分别制成的复合电极,在1 M KOH的三电极体系中,利用循环伏安、交流阻抗、电化学活性表面积(ECSA)、塔菲尔斜率等方法研究复合电极电催化氧化肼(HzOR)的性能与机理。结果表明,成功地获得了非贵金属包膜多孔炭复合材料,并成功地应用于碱体系的电催化氧化肼中。综合性能推断,其中Co-AC比表面积可达到804.4 m^(2)/g,Co-AC表现出最高的ECSA为49.3 cm^(2),扫速为10 mV/s时反应速率最快,并且能在大于100 mA/cm^(2)的电流密度下保持持续稳定工作,说明具有良好的稳定性。In this paper,non-noble metal supported composites such as Fe-AC,Co-AC and Ni-AC were prepared using rice husk based porous carbon as carrier and sodium borohydride as reductant.The composites were characterized by XRD,SEM,BET and XPS,respectively.The electrocatalytic oxidation of hydrazine(HzOR)was studied in a 1 M KOH three-electrode system,including cyclic voltammetry,AC impedance,electrochemical active surface area(ECSA)and Tafel slope et.al.The results show that the nonnoble metal coated porous carbon composite had been successfully obtained,and the prepared electrode can be successfully used in the alkali system of electrocatalytic oxidation of hydrazine.The comprehensive performance is inferred that the specific surface area of Co-AC can reach 804.4 m^(2)/g,the highest ECSA of Co-AC is 49.3 cm^(2),and the reaction rate is the fastest when the sweep speed is 10 mV/s,and it can maintain continuous and stable operation under the current density greater than 100 mA/cm^(2).

关 键 词：稻壳基多孔炭 非贵金属(铁/钴/镍) 复合材料 肼 电催化氧化 

分 类 号：O614.8[理学—无机化学]