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Updated: May 12, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Ni-Ce synergistic enhancement enabling NiCe@F bifunctional material for integrated CO2 capture and methanation
Pengchao Zang1, Jiyun Tang2, Wei Dong3
1National Engineering Laboratory for Reducing Emissions from Coal Combustion, Engineering Research Center of Environmental Thermal Technology of Ministry of Education, Shandong Key Laboratory of Green Thermal Power and Carbon Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
Abstract:
Integrated CO2 capture and methanation (ICCM) represents a promising strategy for simultaneous carbon mitigation and renewable energy storage; however, its practical deployment is limited by insufficient adsorption-catalytic efficiency and stability of dual-function material (DFM) under variable-temperature operation. Herein, a FAU zeolite-supported NiCe bimetallic DFM (NiCe@F) was rationally designed via a self-assembly strategy to enable low-temperature CO2 adsorption (70 °C) coupled with high-temperature methanation (350 °C). Compared with monometallic counterparts, NiCe@F exhibits a markedly enhanced ICCM performance, achieving a CO2 conversion of 93.00%, a CH4 yield of 2.67 mmol·g-1, with 100.00% CH4 selectivity, and excellent cyclic stability over 50 consecutive cycles. Multiscale characterizations reveal that Ce incorporation promotes Ni dispersion, strengthens metal-support interactions, and induces abundant surface oxygen vacancies. In situ DRIFTS and TPSR-MS analyses demonstrate that the reaction proceeds predominantly via a formate-mediated pathway, while H2WO3 probing experiments confirm the superior H2 dissociation capability arising from NiCe dual-active sites. DFT calculations further indicate that Ce doping enhances charge transfer and adsorption strength, reinforcing the synergistic effect. This work provides mechanistic insights into bimetallic synergy-driven ICCM and offers a viable strategy for designing high-performance DFMs for practical carbon capture and utilization.
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