CAJ | 학술논문

采用化学还原法制备了PtRu/C催化剂,XRD的表征分析结果表明:Pt粒子呈面心立方结构,催化剂平均粒径为4 nm.并使用循环伏安法研究了PtRu/C催化剂(担载量0.056 mg/cm~2,PtRu的质量分数为20%,Pt/Ru原子比为1:1)的电氧化性能.研究结果显示制备的催化剂对甲醇有高的电催化氧化性能:起始电位为0.2 V(vs.SCE),其峰值电流密度为23.52 mA/cm~2,比质量活性为419 mA/mg.研究还发现利用本方法制备的PtRu/C催化剂对于甲醇有较强的抗CO中毒能力和较高的电催化活性.
채용화학환원법제비료PtRu/C최화제,XRD적표정분석결과표명:Pt입자정면심립방결구,최화제평균립경위4 nm.병사용순배복안법연구료PtRu/C최화제(담재량0.056 mg/cm~2,PtRu적질량분수위20%,Pt/Ru원자비위1:1)적전양화성능.연구결과현시제비적최화제대갑순유고적전최화양화성능:기시전위위0.2 V(vs.SCE),기봉치전류밀도위23.52 mA/cm~2,비질량활성위419 mA/mg.연구환발현이용본방법제비적PtRu/C최화제대우갑순유교강적항CO중독능력화교고적전최화활성.
The PtRu/C catalyst was prepared by chemical reduction method in this paper. The XRD analyzing results show that the catalyst is of a face-centered cubic crystal lattice structure with the average particle size of 4 nm., Catalytic activities of the prepared PtRu/C were studied by cyclic voltammetry in a solution of 0.5 mol/L CH_3OH +0.5 mol/L H_2O_4. The results show that the start potential is 0.2 V (vs. SCE), the oxidation peak current is 23.52 mA/cm~2, and the ratio of the oxidation peak current to the loading is 419 mA/mg. The study also shows that the prepared catalyst not only has a higher catalytic activity to methanol, but also has good tolerance to CO.