Promotion Effects of ZrO2 on Mesoporous Pd Prepared by a One-Step Dealloying Method for Methanol Oxidation in an Alkaline Electrolyte
Promotion Effects of ZrO2 on Mesoporous Pd Prepared by a One-Step Dealloying Method for Methanol Oxidation in an Alkaline Electrolyte
复制标题
ZrO2 对一步脱合金法制备的介孔 Pd 对碱性电解液中甲醇氧化的促进作用
DOI：
10.1149/2.1821713jes
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Sen Yang
中科院分区：
文献类型：
--
作者：
Yanyan Song;Zhanbo Sun;Dong Duan;Wenyu Shi;Haiyang Wang;Sen Yang
通过对快淬Al-Pd-Zr薄带进行简单的一步脱合金处理，制备了组成可控的三维介孔Pd-ZrO 2复合材料。脱合金后，前驱体合金中的Zr原子转变为粒径约为0. 3 nm的ZrO 2纳米粒子，并嵌入Pd韧带表面。由于Pd和ZrO 2之间的协同效应和电子相互作用，该复合物对甲醇在碱性电解液中的氧化具有显著的催化活性和稳定性。其中，从Al_（85）Pd_（13）Zr_2前驱体合金中脱合金的Pd-ZrO_2样品具有最高的峰值电流密度，约为介孔Pd样品的3.6倍。
Composition-controllable three-dimensional mesoporous Pd-ZrO2 composites were synthesized through simple one-step dealloying.of melt-spun Al-Pd-Zr ribbons. The Zr atoms in the precursor alloy transformed into ZrO2 nanoparticles with a size of approximately.3 nm after dealloying, and they embedded in the surface of the Pd ligaments. The composites exhibited remarkable catalytic activity.and stability for methanol oxidation in an alkaline electrolyte due to the synergistic effect and electronic interaction between Pd and.ZrO2. Among the composites, the Pd-ZrO2 sample dealloyed from the Al85Pd13Zr2 precursor alloy had the highest peak current.density, which was approximately 3.6 times that of the mesoporous Pd sample.