TY  - JOUR
AU  - Zhou, Yun
AU  - Zheng, Peng
AU  - Wang, Fang
AU  - Gu, Fangna
AU  - Xu, Wenqing
AU  - Lu, Qinyang
AU  - Zhu, Tingyu
AU  - Zhong, Ziyi
AU  - Xu, Guangwen
AU  - Su, Fabing
PY  - 2024
TI  - NiO@Ni nanoparticles embedded in N-doped carbon for efficient photothermal CO2 methanation coupled with H2O splitting
JO  - Nano Research
SN  - 1998-0124
SP  - 2283
EP  - 2290
VL  - 17
IS  - 4
AB  - Photothermal carbon dioxide (CO2) methanation has attracted increasing interest in solar fuel synthesis, which employs the advantages of photocatalytic H2O splitting as a hydrogen source and photothermal catalytic CO2 reduction. This work prepared three-dimensional (3D) honeycomb N-doped carbon (NC) loaded with core–shell NiO@Ni nanoparticles generated in situ at 500 °C (NiO@Ni/NC-500). Under the photothermal catalysis (200 °C, 1.5 W/cm2), the CH4 evolution rate of NiO@Ni/NC-500 reached 5.5 mmol/(g·h), which is much higher than that of the photocatalysis (0.8 mmol/(g·h)) and the thermal catalysis (3.7 mmol/(g·h)). It is found that the generated localized surface plasmon resonance enhances the injection of hot electrons from Ni to NiO, while thermal heating accelerates the thermal motion of radicals, thus generating a strong photo-thermal synergistic effect on the reaction. The CO2 reduction to CH4 follows the *OCH pathway. This work demonstrates the synergistic effect of NiO@Ni and NC can enhance the catalytic performance of photothermal CO2 reduction reaction coupled with water splitting reaction.
UR  - https://doi.org/10.1007/s12274-023-6226-5
DO  - 10.1007/s12274-023-6226-5