Pd/N-Ti_(3)CN催化剂的制备及其乙醇电氧化性能研究

High-performance Pd Nanocatalysts Based on the N-doped Ti_3CN Support for Ethanol Electrooxidation

本文通过对MAX相Ti_(3)AlCN进行不同时间的HF刻蚀(10~26h)和氨水(~25%)掺杂工艺,成功地制备一系列新型N掺杂Ti_(3)CN负载Pd基催化剂(Pd/N-Ti_(3)CN)。其中Pd/N-Ti_(3)CN-14h催化剂具有最高的电化学活性表面积、乙醇氧化电流密度(~40m A·cm^(-2))和电化学稳定性。这种优异的电催化性能可以归因于合适的HF刻蚀和氨水掺杂的协同作用导致其明显层状结构的Ti_(3)CN载体。因此,Pd/N-Ti_(3)CN有潜力作为一类高性能乙醇电氧化的阳极催化剂。

A series of N-doped Ti_(3)CN supported Pd-based catalysts are successfully prepared by HF etching on MAX phase Ti_(3)AlCN at different time(10~26 h)and ammonia doping(~25%).Pd/N-Ti_(3)CN-14 h catalyst has the highest electrochemical activity surface area,the current density(~40 m A·cm~(-2))and the electrochemical stability.This excellent electrocatalytic performance can be attributed to the synergistic effect of proper HF etching and ammonia doping,Therefore,Pd/N-Ti_(3)CN has the potential to be used as an anode catalyst for the ethanol electrooxidation.