Citation: Chengxin Liu, Ying Zhang, Hui Kong, Zizheng Chen, Yeshun Zhang, Hong Liu, Wenqiang Gao, Kai Zhou, Lili Zhao, Wei Xia, Xiaoyan Liu, Weijia Zhou. Ru-decorated defective tantalum oxide via laser synthesis for efficient photothermal CO₂ methanation[J]. Chinese Chemical Letters, ;2026, 37(9): 111345. doi: 10.1016/j.cclet.2025.111345 shu

Ru-decorated defective tantalum oxide via laser synthesis for efficient photothermal CO₂ methanation

Chengxin Liu ^{a, 1} ,
Ying Zhang ^{a, 1} ,
Hui Kong ^a ,
Zizheng Chen ^a ,
Yeshun Zhang ^a ,
Hong Liu ^{a, b} ,
Wenqiang Gao ^a ,
Kai Zhou ^c ,
Lili Zhao ^{a, *,} ,
Wei Xia ^{d, *,} ,
Xiaoyan Liu ^{a, *,} ,
Weijia Zhou ^{a, *,}

a.
Institute for Advanced Interdisciplinary Research (iAIR), School of Chemistry and Chemical Engineering, University of Jinan, Ji'nan 250022, China
b.
State Key Laboratory of Crystal Materials, Shandong University, Ji'nan 250100, China
c.
Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
d.
School of Physics and Technology, University of Jinan, Ji'nan 250022, China

ifc_zhaoll@ujn.edu.cn

sps_xiaw@ujn.edu.cn

ifc_liuxy@ujn.edu.cn

ifc_zhouwj@ujn.edu.cn

Received Date: 17 March 2025
Revised Date: 30 April 2025
Accepted Date: 19 May 2025
Available Online: 19 May 2025

Figures(4)

The conversion of carbon dioxide (CO₂) into valuable fuels or chemicals through photothermal catalysis is an efficient way to alleviate the global energy crisis and climate change. Regulating active sites and modifying photothermal conversion characteristics are conducive to photothermal catalytic reactions. In this study, the defect-rich tantalum oxide on tantalum foil decorated with Ru nanoparticles (Ru/Ta₂O_5-x/Ta) was synthesized using pulsed laser under thermal ablation effects. The presence of oxygen defects enhanced the photothermal conversion efficiency. Meanwhile, the interface between Ru and Ta₂O_5-x facilitated the adsorption of CO₂, and Ru nanoparticles served as efficient active sites for the hydrogenation of CO₂ to methane (CH₄). The Ru/Ta₂O_5-x/Ta catalyst exhibited excellent photothermal conversion efficiency (reaching 343.4 ℃ at 1.76 W/cm²) and excellent catalytic activity with a CH₄ yield of 50.6 mol g_(Ru)^-1 h^-1 (CH₄ selectivity of 98%). The experimental and theoretical results demonstrated that the catalytic sites of Ru/Ta₂O_5-x/Ta in combination with light irradiation promoted CO₂ activation, intermediate formation and CO* transformation, thereby accelerating the production of CH₄. Moreover, the application of the pulsed laser was extended to construct the photothermal catalyst with high photothermal temperature and efficient catalytic sites.
- Photothermal catalysis,
- Tantalum oxide,
- CO₂ methanation,
- Oxygen vacancy,
- Laser synthesis
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沈阳化工大学材料科学与工程学院沈阳 110142

Ru-decorated defective tantalum oxide via laser synthesis for efficient photothermal CO2 methanation

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通讯作者: 陈斌, bchen63@163.com

Ru-decorated defective tantalum oxide via laser synthesis for efficient photothermal CO₂ methanation