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 en_US
ISSN
期刊性質 國外
收錄於 ESCI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120667 )

SDGS 優質教育,氣候行動,夥伴關係