Anchoring ultra-small molybdenum oxide species on covalent triazine frameworks for efficient electrochemical nitrogen fixation

Wenwen Lin; Teng Guo; Zihao Zhang; Hao Chen; Gaobo Lin; Yifeng Liu; Siyu Yao; Liang Wang; Bolong Li; Jianghao Wang; Jie Fu; Pingkai Ouyang

doi:10.1039/d2cc06983k

Anchoring ultra-small molybdenum oxide species on covalent triazine frameworks for efficient electrochemical nitrogen fixation

Chem Commun (Camb). 2023 Apr 6;59(29):4352-4355. doi: 10.1039/d2cc06983k.

Authors

Wenwen Lin^{1

2}, Teng Guo^{1

2}, Zihao Zhang¹, Hao Chen³, Gaobo Lin^{1

2}, Yifeng Liu⁴, Siyu Yao¹, Liang Wang¹, Bolong Li^{1

2}, Jianghao Wang^{1

2}, Jie Fu^{1

2}, Pingkai Ouyang¹

Affiliations

¹ Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China. jiefu@zju.edu.cn.
² Institute of Zhejiang University-Quzhou, 99 Zheda Road, Quzhou, Zhejiang Province, 324000, China.
³ College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
⁴ Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310028, China.

PMID: 36946224
DOI: 10.1039/d2cc06983k

Abstract

We report a smart ion-exchange strategy to anchor molybdenum oxide particles on charge-modulated conjugated triazine frameworks (Mo/CTF-I) for electrochemically fixing nitrogen. The strong interaction between MoO_x and CTF-I is conducive to the activation of the inert N₂ molecule in the electro-chemical process. As a result, 5% Mo/CTF-I exhibited an excellent faradaic efficiency of 27.3% and an NH₃ yield rate of 7.23 μg h^-1 mg_cat.^-1 at -0.405 V vs. RHE in 0.1 M KOH, surpassing most previous reports.