High catalytic activity of ultrafine nanoporous palladium for electro-oxidation of methanol, ethanol, and formic acid
High catalytic activity of ultrafine nanoporous palladium for electro-oxidation of methanol, ethanol, and formic acid
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DOI：
10.1016/j.elecom.2009.08.011
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发表时间：
2009-10
影响因子：
5.4
通讯作者：
Xiaoguang Wang;Weimin Wang;Zhen Qi;Changchun Zhao;H. Ji;Zhonghua Zhang
中科院分区：
文献类型：
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作者：
Xiaoguang Wang;Weimin Wang;Zhen Qi;Changchun Zhao;H. Ji;Zhonghua Zhang
采用Al-Pd合金在碱性溶液中脱合金的方法制备了纳米多孔钯（NPPd），其韧带尺寸为3- 6 nm。电化学测试表明，NPPd具有非常高的电化学活性比表面积（23 m2 g −1），对甲醇、乙醇和甲酸的电氧化具有很高的催化活性。对甲醇、乙醇和甲酸的氧化质量活度分别达到149、148和262 mAmg − 1。此外，可以观察到所有电氧化过程的上级稳态活性。NPPd是一种很有前途的直接醇或甲酸燃料电池阳极催化剂。
Nanoporous palladium (NPPd) with ultrafine ligament size of 3–6nm was fabricated by dealloying of an Al–Pd alloy in an alkaline solution. Electrochemical measurements indicate that NPPd exhibits significantly high electrochemical active specific surface area (23m2g−1), and high catalytic activity for electro-oxidation of methanol, ethanol, and formic acid. Mass activities can reach 149, 148, 262mAmg−1for the oxidation of methanol, ethanol and formic acid, respectively. Moreover, superior steady-state activities can be observed for all the electro-oxidation processes. NPPd will be a promising candidate for the anode catalyst for direct alcohol or formic acid fuel cells.