摻镍Pt(001)纳米多孔薄膜对甲醇的电催化氧化
Ni-modified Pt(001) porous film as an electrocatalyst for electrooxidation of methanol in alkaline media
本文采用磁控溅射法在MgO衬底上成功外延生长出Pt(001)纳米多孔薄膜。通过调控氧分压调控Pt薄膜的多孔率，对比研究了其对甲醇的电催化氧化效果。微结构观测发现，Pt(001)薄膜的多孔率随着氧分压的升高而逐渐增加，在45 %氧分压条件下Pt(001)薄膜形成三维网状孔洞结构。随着多孔率的提高，薄膜比表面积增大，同时Ni纳米颗粒在薄膜中的附着位点也大大增加，两者都有效增强了Pt(001)多孔薄膜对甲醇的催化作用：电流强度高达29mA/cm2并且得到超过1000秒的计时电流图，表明摻镍Pt(001)纳米多孔薄膜在甲醇催化领域方面的应用前景值得期待。
In this work, porous Pt (001) nanofilm modified with Ni nano-particles, grown on MgO substrate by magnetron sputtering, is studied as one of electrocatalytists for electrooxidation of methanol. Micro-structural characterizations reveal that the pores ratio of Pt(001) thin film increases with the increase of well-controlled oxygen fraction in the deposition ambient. Pt(001) thin film deposited with 45%-oxygen fraction exhibits percolating Pt networks infiltrated with interconnected nano-sized pores. After coating one layer of Ni nano-particles, the 45%-oxygen deposited Pt(001) porous film acts as an electrocatalyst for electrooxidation of methanol in alkaline media, a large catalytic current of 29mA/cm2 and a current-lasting time of more than 1000s are obtained, showing the promising applications of electrocatalyst for electrooxidation of methanol in DMFC field.
邢玉陟、张叶、魏明龙、张祎杨、翟文静、鲁乐业、邱晓燕
化学晶体学
外延多孔薄膜 甲醇电催化，磁控溅射法
epitaxial porous filmelectrocatalyst for methonalmagnetron sputtering
邢玉陟,张叶,魏明龙,张祎杨,翟文静,鲁乐业,邱晓燕.摻镍Pt(001)纳米多孔薄膜对甲醇的电催化氧化[EB/OL].(2017-09-21)[2025-08-02].http://www.paper.edu.cn/releasepaper/content/201709-100.点此复制
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