溶剂热合成法制备Co_(2)Mo_(3)O_(8)催化剂及其氧析出反应性能

Preparation of Co_(2)Mo_(3)O_(8) Catalysts by Solvothermal Synthesis and Its OER Performance

采用溶剂热合成法制备具有氧析出反应(OER)性能的花瓣状Co_(2)Mo_(3)O_(8)纳米催化剂。研究制备条件对Co_(2)Mo_(3)O_(8)结构及OER催化性能的影响。通过SEM和XRD技术对催化剂的形貌和结构进行表征,表明在溶剂比例V_(水):V_(乙)=1:2、表面活性剂用量为6 mmol和氧化剂用量为4 mmol的条件下制备Co_(2)Mo_(3)O_(8)纳米催化剂具有外貌完整和大小均一的球状颗粒,颗粒的表面有密集的花瓣状薄片。采用电化学方法研究催化剂的OER催化性能。结果表明,Co_(2)Mo_(3)O_(8)纳米催化剂具有较高的OER催化活性和较好的电化学稳定性。

Flower-like Co_(2)Mo_(3)O_(8) nanocatalyst for oxygen evolution reaction(OER)was prepared by solvothermal synthesis method.The effects of preparation conditions on the structure of Co_(2)Mo_(3)O_(8) and the catalytic performance of OER were studied.The morphology and structure of the as-prepared catalysts were characterized by SEM and XRD.When the volume ratio of water/ethylene glycol was 1∶2,the surfactant was 6 mmol and the oxidant was 4 mmol,the Co_(2)Mo_(3)O_(8) nanocatalyst had complete spherical particles with uniform size and dense flower-like flakes on the surface of particles.Subsequently,its OER catalytic performance was evaluated by electrochemical method.The results showed that such Co_(2)Mo_(3)O_(8) nanocatalyst exhibited high OER catalytic performance and fine electrochemical stability.