Biochar aerogel decorated with thiophene S manipulated 5-membered rings boosts nitrogen fixation

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題名:	Biochar aerogel decorated with thiophene S manipulated 5-membered rings boosts nitrogen fixation
作者:	Xiaokang Chen;Lijie Zhang;Wenjia Xu;Xin Ding;Shuai Chen;Xilin She;Xiangxin Guo;Chung-Li Dong;Yucheng Huang;Lixue Zhang;Shaohua Shen;Dongjiang Yang
日期:	2022-09-15
上傳時間:	2023-05-15 12:10:19 (UTC+8)
出版者:	Elsevier B.V.
摘要:	Algae contains most of the marine biogenic S, and is the main producer of dimethylsulfide, of which oxidation products contribute ~ 40% acidity of the acid rain. The biogenic S of red algae mainly exists in carrageenan molecules. In this work, 89% of C and 96% of biogenic S in carrageenan was synchronically fixed into biochar to form thiophene S decorated biochar aerogel (SCA), efficiently preventing the loss of C and S elements. More importantly, the presence of thiophene S structure in SCA can “push” electrons into the antibonding orbitals of N2, and simultaneously “pull” the lone-pair electrons from N2, thus endowing the SCA super activity for nitrogen reduction reaction. Experimentally, its NH3 yield rate reaches high as 36.69 μg h−1 mg−1cat, surpassing most metal-free electrocatalysts. Theoretical calculations demonstrate that the thiophene S can promote the absorption and activation of N2, and efficiently lower the energy barrier of N2 protonation.
關聯:	Applied Catalysis B: Environmental 313, 121425
DOI:	10.1016/j.apcatb.2022.121425
顯示於類別:	[電機工程學系暨研究所] 期刊論文

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