Hollow PdCo alloy nanospheres with mesoporous shells as high-performance catalysts for methanol oxidation.

Title Hollow PdCo alloy nanospheres with mesoporous shells as high-performance catalysts for methanol oxidation.
Authors G. Sheng; J. Chen; H. Ye; Z. Hu; X.Z. Fu; R. Sun; W. Huang; C.P. Wong
Journal J Colloid Interface Sci
DOI 10.1016/j.jcis.2018.03.039
Abstract

Monodisperse hollow mesoporous PdCo alloy nanospheres are prepared via a simple galvanic replacement reaction. The as-prepared PdCo hollow nanospheres have small diameter, such as PdCo nanospheres of diameter about 25?nm and mesoporous shells about 4-5?nm. The PdCo hollow mesoporous nanospheres possess the largest electrochemical active surface areas (ECSA, 53.91?m?g), mass activity (1488?mA?mg) and specific activity (2.76?mA?cm) towards to methanol oxidation relative to the PdCo, PdCo hollow mesoporous nanospheres and commercial Pd/C catalysts. Moreover, the activity of PdCo after long-term stability tests is still the best and even better than those of fresh PdCo and commercial Pd/C catalysts. The PdCo catalysts not only effectively reduce the Pd usage by forming hollow structure, but also fully realize the Pd-Co alloying effects for enhancing the methanol oxidation catalytic performance.

Citation G. Sheng; J. Chen; H. Ye; Z. Hu; X.Z. Fu; R. Sun; W. Huang; C.P. Wong.Hollow PdCo alloy nanospheres with mesoporous shells as high-performance catalysts for methanol oxidation.. J Colloid Interface Sci. 2018;522:264271. doi:10.1016/j.jcis.2018.03.039

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Palladium

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