A Biomass‐Derived Carbon‐Based Electrocatalyst for Efficient N2 Fixation to NH3 under Ambient Conditions. Issue 8 (9th January 2019)

• Record Type: Journal Article
• Authors: Huang, Hong; Xia, Li; Cao, RongRong; Niu, Zhiguo; Chen, Hongyu; Liu, Qian; Li, Tingshuai; Shi, Xifeng; Asiri, Abdullah M.; Sun, Xuping
• Is Part Of: Chemistry. Volume 25:Issue 8(2019)
• Page Start: 1914
• Page End: 1917
• Publication Date: 2019-01-09
• Subjects: ambient conditions -- carbon nanosheets -- electrocatalysis -- N2 fixation -- oxygen doping; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.201805523
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Currently, NH3 production primarily depends on the Haber–Bosch process, which operates at elevated temperatures and pressures and leads to serious CO2 emissions. Electrocatalytic N2 reduction offers an environmentally benign approach for the sustainable synthesis of NH3 under ambient conditions. This work reports the development of biomass‐derived amorphous oxygen‐doped carbon nanosheet (O−CN) using tannin as the precursor. As a metal‐free electrocatalyst for N2 ‐to‐NH3 conversion, such O−CN shows high catalytic performances, achieving a large NH3 yield of 20.15 μg h −1 mg −1 cat. and a high Faradic efficiency of 4.97 % at −0.6 V vs. reversible hydrogen electrode (RHE) in 0.1 m HCl at ambient conditions. Remarkably, it also exhibits high electrochemical selectivity and durability. Abstract : An oxygen‐doped carbon nanosheet is an efficient electrocatalyst for N2 reduction reaction, achieving a large NH3 yield of 20.15 μg h −1 mg −1 cat. and a high Faradic efficiency of 4.97 % at −0.6 V vs. reversible hydrogen electrode in 0.1 m HCl.