钴卟啉为前驱体的生物基Co-N-C材料制备与性能  

Preparation and Electrocatalytic Properties of CoII Porphyrin Derived Biobased Co-N-C Materials

作　　者：张振 牛英杰 臧雷 朱卫华[1] 梁旭 Zhang Zhen;Niu Yingjie;Zang Lei;Zhu Weihua;Liang Xu(School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China;Suqian Health School,Suqian223800,China)

机构地区：[1]江苏大学化学化工学院,江苏镇江212013 [2]江苏省宿迁卫生中等专业学校,江苏宿迁223800

出　　处：《稀有金属》2023年第1期134-144,共11页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(21701058)资助。

摘　　要：竹叶,是禾本科的一个分支,在热带、亚热带地区,东亚、东南亚和印度洋及太平洋岛屿上分布最集中、种类很多,是世界上长得最快的植物。本文以人工合成的四苯基金属钴卟啉为前驱体,通过溶液自吸附方式,将其分散在天然竹叶结构当中。经高温退火处理,得到竹叶源植物基Co-N-C型材料。通过扫描电镜(SEM)、 X射线衍射(XRD)、 Raman光谱确定的材料的形貌与结构,利用能谱(EDS)与X射线光电子能谱(XPS)等方式确认了元素的分布。进一步研究通过多种电化学催化实验,确认了经不同退火温度合成的Co-N-C催化剂表现出不同的催化活性,且经1000℃退火处理的CoTPP@BC-1000表现出最佳的电催化活性。在电化学催化后,经SEM与EDS确认催化剂在反应前后形貌与元素分布均表现出良好的稳定性。鉴于竹叶是中国常见的植物基原料,存储量大,未来研究可针对竹叶源生物基材料的深度开发与应用进行更加深入的研究,具有一定的理论与实验价值。In this paper,based on the characteristics of high cellulose content of bamboo leaves,CoII porphyrins were self-adsorbed,and the CoII porphyrins were evenly dispersed in the bamboo leaves.After medium temperature annealing,bamboo leaves self-ad‐sorbed Co-N-C type materials were successfully obtained.The structure was characterized and confirmed by scanning electron micro‐scope (SEM),X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).Through a series of electrochemical catalytic ex‐periments,we confirmed that the CoTPP@BC-1000 catalyst had the best electrocatalytic activity and the satisfied catalyst stability from the following points of views.The demand for energy was increasing rapidly with population growth and technological progress.At the same time,the air,water,soil pollution and the greenhouse effect caused by the widespread use of fossil fuels were not reduced,if this series of problems could not be solved from the source,in the future the destiny of mankind and the sustainable development of the ecological environment could not be guaranteed within next ten years.In order to better solve the environmental pollution problems caused by the burning of fossil fuels and petrochemical production,scientists were committed to find clean,efficient and stable alter‐native energy resources of fossil fuels.Hydrogen was considered to be the most potential energy source in the future due to its advantag‐es of high combustion heat,sufficient raw materials,clean reaction end products,and zero carbon emissions.Recent studies had shown that the precious metal platinum has good catalytic activity in the hydrogen evolution reaction,but its low crust storage capacity led to high prices and could not be used commercially.It was of great practical significance to develop low-cost,high-activity catalysts to promote the successful applications of fuel cell technology.Compared with precious metals,transition metals had the advantages of rich crust content and low commercial price.At the same time,they ex

关 键 词：竹叶炭 金属卟啉 Co-N-C催化剂 电化学催化 析氢反应(HER) 

分 类 号：TF803.21[冶金工程—有色金属冶金]