教師資料查詢 | 類別: 期刊論文 | 教師: 董崇禮CHUNG-LI DONG (瀏覽個人網頁)

標題:In-situ Exfoliation and Pt deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway
學年108
學期2
出版(發表)日期2020/07/01
作品名稱In-situ Exfoliation and Pt deposition of Antimonene for Formic Acid Oxidation via a Predominant Dehydrogenation Pathway
作品名稱(其他語言)
著者Yiqiong Zhang; Man Qiao; Yucheng Huang; Yuqin Zou; Zhijuan Liu,; Li Tao; Yafei Li; Chung-Li Dong; Shuangyin Wang
單位
出版者
著錄名稱、卷期、頁數Research 2020, 5487237
摘要Direct formic acid fuel cell (DFAFC) has been considered as a promising energy conversion device for stationary and mobile applications. Advanced platinum (Pt) electrocatalysts for formic acid oxidation reaction (FAOR) are critical for DFAFC. However, the oxidation of formic acid on Pt catalysts often occurs via a dual pathway mechanism, which hinders the catalytic activity owing to the CO poisoning. Herein, we directly exfoliate bulk antimony to 2D antimonene (Sb) and in situ load Pt nanoparticles onto antimonene sheets with the assistance of ethylenediamine. According to the Bader charge analysis, the charge transfer from antimonene to Pt occurs, confirming the electronic interaction between Pt and Sb. Interestingly, antimonene, as a cocatalyst, alters the oxidation pathway for FAOR over Pt catalyst and makes FAOR follow the more efficient dehydrogenation pathway. The density functional theory (DFT) calculation demonstrates that antimonene can activate Pt to be a lower oxidative state and facilitate the oxidation of HCOOH into CO2 via a direct pathway, resulting in a weakened intermediate binding strength and better CO tolerance for FAOR. The specific activity of FAOR on Pt/Sb is 4.5 times, and the mass activity is 2.6 times higher than the conventional Pt/C.
關鍵字
語言英文(美國)
ISSN
期刊性質國外
收錄於ESCI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,電子版
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