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Updated: Jun 7, 2025
Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
Constructing a nickel complex/crystalline carbon nitride hybrid with a built-in electric field for boosting CO2
Yanrui Li1, Linda Wang1, Bozhan Li1
1College of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an, 710054, China. liyanrui91@xust.edu.cn.
Abstract:
Sluggish charge separation dynamics resulting from the amorphous structure and the lack of driving force for graphitic carbon nitride (GCN) limits its highly effective CO2 photoreduction performance. Herein, a built-in electric field (BEF) was constructed for a well-designed CCN/Ni hybrid composed of crystalline carbon nitride (CCN) and a metal complex, 2,2'-bipyridine-4,4'-dicarboxylic acid NiBr2 (dcabpyNiBr2), to steer charge carrier separation and migration. The CCN/Ni hybrid was synthesized via a solution-dispersion and molten-salt two-step approach, displaying an improved CO2 photoreduction to CO rate of 8.64 μmol g-1 h-1. In situ experimental results and theoretical simulations further investigated the relationships between BEF and photocatalytic activity. This work demonstrates an effective strategy to obtain high-efficiency photocatalytic systems by engineering the crystal structure and constructing a BEF.
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