Defeng Qi
Tianjin University of Technology
9 Papers
7 Citations
Defeng Qi is an academic researcher from Tianjin University of Technology. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 4, co-authored 6 publications.
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Papers
High-efficiency electrocatalytic NO reduction to NH 3 by nanoporous VN
Defeng Qi,Fang Lv,Tianran Wei,Mengmeng Jin,Ge Meng,Shusheng Zhang,Qi Li,Wenxian Liu,Dui Ma,Mohamed S. Hamdy,Jun Luo,Xijun Liu +11 more
TL;DR: In this paper , a nanoporous VN film was designed as a highly selective and stable electrocatalyst for catalyzing reduction of NO to NH, achieving a maximal Faradaic efficiency of 85% and a peak yield rate of 1.8 μg·h.
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Atomic Fe-Zn dual-metal sites for high-efficiency pH-universal oxygen reduction catalysis
Jie Xu,Shuhua Lai,Defeng Qi,Min Hu,Xianyun Peng,Yifan Liu,Wei Liu,Guangzhi Hu,Heng Xu,Fan Li,Chao Li,Jia He,Longchao Zhuo,Jiaqiang Sun,Yuan Qiu,Shusheng Zhang,Jun Luo,Xijun Liu +17 more
TL;DR: In this article, the authors demonstrated the preparation of atomically dispersed Fe-Zn pairs anchored on porous N-doped carbon frameworks, which works efficiently as ORR catalyst in the whole pH range.
182
Trifunctional Single-Atomic Ru Sites Enable Efficient Overall Water Splitting and Oxygen Reduction in Acidic Media
Xianyun Peng,Shunzheng Zhao,Yuying Mi,Lili Han,Xijun Liu,Defeng Qi,Jiaqiang Sun,Yifan Liu,Haihong Bao,Longchao Zhuo,Huolin L. Xin,Jun Luo,Xiaoming Sun +12 more
TL;DR: Theoretical calculations reveal that isolated Ru-O2 sites can effectively optimize the adsorption of reactants/intermediates and lower the energy barriers for the potential-determining steps, thereby accelerating the HER, ORR, and OER kinetics.
155
Ambient electrosynthesis of ammonia with efficient denitration
Xianyun Peng,Yuying Mi,Haihong Bao,Yifan Liu,Defeng Qi,Yuan Qiu,Longchao Zhuo,Shunzheng Zhao,Jiaqiang Sun,Xiaolong Tang,Jun Luo,Xijun Liu +11 more
TL;DR: In this article, a single-atom-site Nb catalyst was used to achieve a NH3 yield rate of 8.2 × 10−8 −8 −mol−2 s−1.
128
Engineering Atomic Sites via Adjacent Dual-Metal Sub-Nanoclusters for Efficient Oxygen Reduction Reaction and Zn-Air Battery
Defeng Qi,Yifan Liu,Min Hu,Xianyun Peng,Yuan Qiu,Shusheng Zhang,Wei Liu,Hongyi Li,Guangzhi Hu,Longchao Zhuo,Yongji Qin,Jia He,Gaocan Qi,Jiaqiang Sun,Jun Luo,Xijun Liu +15 more
TL;DR: Comprehensive experiments and theoretical calculations approved that the high activity of the catalyst can be attributed to the collaboration of the Cu/Zn-N4 sites with CuZn moieties on N-doped carbons.
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