唐亞文教授課題組在SMALL發(fā)表研究論文
Facile Synthesis of Porous Pd3Pt Half-Shells with Rich "Active Sites" as Efficient Catalysts for Formic Acid Oxidation
Yan, XX (Yan, Xiaoxiao)[ 1 ] ; Hu, XJ (Hu, Xuejiao)[ 1 ] ; Fu, GT (Fu, Gengtao)[ 1,2 ]*; Xu, L (Xu, Lin)[ 1 ] ; Lee, JM (Lee, Jong-Min)[ 2 ]* ; Tang, YW (Tang, Yawen)[ 1 ]*（唐亞文）
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
[ 2 ] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
SMALL，201803,14,13
Exploring highly efficient electrocatalysts is greatly important for the widespread uptake of the fuel cells. However, many newly generated nanocrystals with attractive nanostructures often have extremely limited surface area or large particle-size, which leads them to display limited electrocatalytic performance. Herein, a novel anode catalyst of hollow and porous Pd3Pt half-shells with rich "active sites" is synthesized by using urea as a guiding surfactant. It is identified that the formation of Pd3Pt half-shells involves the combination of bubble guiding, in situ deposition of particles and bubble burst. The obtained Pd3Pt half-shells demonstrate a rich edge area with abundant exposed active sites and surface defects, indicating great potential for the electrocatalysis. When used as an electrocatalyst, the Pd3Pt half-shells exhibit remarkably improved electrocatalytic performance for formic acid oxidation (FAO), where it promotes the dehydrogenation process of FAO by suppressing the formation of poisonous species COads via the electronic effect and ensemble effect.
文章鏈接：
https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.201703940
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