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Updated: Sep 19, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
Published on: November 7, 2025
Electronic Modulation of Bi-Decorated Ti3C2Tx MXene Toward Highly Efficient Electrocatalytic Nitrate Reduction to
Xianghua Hou1, Junlong Zheng2, Mingying Chen1
1MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China.
Abstract:
Electrochemical nitrate reduction (NO3RR) provides a sustainable route for ammonia (NH3) synthesis while also enabling the treatment of nitrogen-containing wastewater. Herein, Bi nanoparticles were anchored on Ti3C2Tx MXene through an in situ reduction strategy to form Bi-NP/MXene. Compared with pristine MXene, Bi-NP/MXene exhibits markedly improved NO3RR activity and NH3 selectivity, achieving a Faradaic efficiency of 93.2% at -1.2 V versus reversible hydrogen electrode (RHE) and an NH3 yield rate of 195.3 μmol h-1 cm-2 at -1.4 V versus RHE. The catalyst retains stable performance over six consecutive cycles and 1200 min of continuous electrolysis. Density functional theory calculations reveal that Bi incorporation regulates nitrate-derived intermediate adsorption, suppresses H* binding, and reduces the energy barrier of the potential-determining step from 1.36 to 0.74 eV. Moreover, a Zn-NO3 - battery employing Bi-NP/MXene enables simultaneous NH3 production and electricity generation.
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