氮掺杂碳材料的制备及其化学活性位点研究

Preparation of nitrogen-mixed carbon Materials and study on their Chemical activity sites

为了找出比较优异的非铂电极材料,并分析得出其最佳活性位点,分别从氮掺杂碳和碳载过渡金属氮材料催化剂在阴极催化的两个方向进行了探究。现如今通过X射线光电子能谱分析(XPS)可以检测出吡啶型氮、吡咯型氮和石墨型氮三种主要的氮掺杂活性位点。氮掺杂碳(G-N),氮掺杂碳纳米管(NCNT)以及氮掺杂石墨烯-氮掺杂碳纳米管(N-GO1@CNTs2)三种典型的氮掺杂碳材料进行分析。由此可见碳载过渡金属氮催化剂材料的催化活性位点很有可能主要是氮化金属化合物起作用。

In order to find out the excellent non-platinum electrode material,the best active site is analyzed.The catalysts of N-doped carbon and carbon-borne transition metal nitrogen materials were investigated in two directions of cathodic catalysis.Currently,three main nitrogen doping active sites of pyridine-type nitrogen,pyrrol type nitrogen and graphite type nitrogen can be detected by X-ray photoelectron spectroscopy(XPS).Nitrogen-doped carbon(GN),nitrogen-doped carbon nanotubes(NCNT)and nitrogen-doped graphene-doped carbon nanotubes(NGO1@CNTs2)were analyzed.It can be seen that carbon-borne transition metal nitrogen catalyst.It is likely that the catalytic active sites of the materials are mainly nitrided metal compounds.