Enhanced visible-light-driven CO2 photoreduction into methanol using PtO/GdFeO3 nanocomposites

doi:10.1016/j.cjche.2024.10.025

Chinese Journal of Chemical Engineering ›› 2025, Vol. 78 ›› Issue (2): 131-139.DOI: 10.1016/j.cjche.2024.10.025

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Enhanced visible-light-driven CO₂ photoreduction into methanol using PtO/GdFeO₃ nanocomposites

Ali Fawad¹, Zaman Saeed², Yimeng Sun¹, Xu Zhang¹, Feng Zhang¹, Guodong Li³, Guangli Yu⁴

1. Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and School of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China;
2. College of Chemistry, Liaoning University, Shenyang 110036, China;
3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China;
4. College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China

Received:2024-04-15 Revised:2024-10-30 Accepted:2024-10-30 Online:2024-12-14 Published:2025-02-08
Supported by:
The authors acknowledge financial support from National Natural Science Foundation of China (21771047), Natural Science Foundation of Heilongjiang Province, China (YQ2020E029) and Open Project of State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University (2023-17).

Enhanced visible-light-driven CO₂ photoreduction into methanol using PtO/GdFeO₃ nanocomposites

Ali Fawad¹, Zaman Saeed², Yimeng Sun¹, Xu Zhang¹, Feng Zhang¹, Guodong Li³, Guangli Yu⁴

1. Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province and School of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, China;
2. College of Chemistry, Liaoning University, Shenyang 110036, China;
3. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China;
4. College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China

通讯作者: Yimeng Sun,E-mail:sunyimeng@hrbnu.edu.cn;Xu Zhang,E-mail:zhangxu@hrbnu.edu.cn;Feng Zhang,E-mail:zhangfeng@hrbnu.edu.cn
基金资助:
The authors acknowledge financial support from National Natural Science Foundation of China (21771047), Natural Science Foundation of Heilongjiang Province, China (YQ2020E029) and Open Project of State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University (2023-17).

Abstract

Abstract: Herein, PtO-supported GdFeO₃ (PtO/GdFeO₃) composite photocatalysts were synthesized by a solution-based technique. Extensive analysis using various analytical instruments has shown that PtO plays a crucial function in augmenting the visible light absorption capacity of composites. Better photogenerated charge carrier transport was credited with this improvement, which led to a decrease in bandgap energy as low as 2.14 eV. The PtO/GdFeO₃ nanocomposites showed remarkable photocatalytic activity when exposed to visible light, especially in the conversion of CO₂ into CH₃OH. After 9 h of light, a noteworthy yield of 1550 μmol·g^-1 of methanol was produced, demonstrating maximum efficiency at a dose of 2.0 g·L^-1 and a concentration of 5.0% PtO/GdFeO₃. This yield indicates the effectiveness of the heterostructure, which outperformed pristine GdFeO₃ by a factor of 7.85. This significant enhancement highlights the potential advantages of the modified structure in improving performance. Most significantly, the photocatalyst's durability maintained 98.0% of its initial efficacy throughout five cycles. The success of PtO/GdFeO₃ is largely due to the synergistic light absorption capabilities and enhanced photocharge carrier separation that the integration of PtO produced. It highlights the conversion of CO₂ into valuable chemicals under visible light exposure, as well as the promise of mixed oxide nanostructures in ecologically responsible material creation.

Key words: PtO/GdFeO₃, CO₂ photoreduction, CH₃OH production, Photogenerated charge carrier transport

摘要： Herein, PtO-supported GdFeO₃ (PtO/GdFeO₃) composite photocatalysts were synthesized by a solution-based technique. Extensive analysis using various analytical instruments has shown that PtO plays a crucial function in augmenting the visible light absorption capacity of composites. Better photogenerated charge carrier transport was credited with this improvement, which led to a decrease in bandgap energy as low as 2.14 eV. The PtO/GdFeO₃ nanocomposites showed remarkable photocatalytic activity when exposed to visible light, especially in the conversion of CO₂ into CH₃OH. After 9 h of light, a noteworthy yield of 1550 μmol·g^-1 of methanol was produced, demonstrating maximum efficiency at a dose of 2.0 g·L^-1 and a concentration of 5.0% PtO/GdFeO₃. This yield indicates the effectiveness of the heterostructure, which outperformed pristine GdFeO₃ by a factor of 7.85. This significant enhancement highlights the potential advantages of the modified structure in improving performance. Most significantly, the photocatalyst's durability maintained 98.0% of its initial efficacy throughout five cycles. The success of PtO/GdFeO₃ is largely due to the synergistic light absorption capabilities and enhanced photocharge carrier separation that the integration of PtO produced. It highlights the conversion of CO₂ into valuable chemicals under visible light exposure, as well as the promise of mixed oxide nanostructures in ecologically responsible material creation.

关键词: PtO/GdFeO₃, CO₂ photoreduction, CH₃OH production, Photogenerated charge carrier transport

Ali Fawad, Zaman Saeed, Yimeng Sun, Xu Zhang, Feng Zhang, Guodong Li, Guangli Yu. Enhanced visible-light-driven CO₂ photoreduction into methanol using PtO/GdFeO₃ nanocomposites[J]. Chinese Journal of Chemical Engineering, 2025, 78(2): 131-139.

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Enhanced visible-light-driven CO₂ photoreduction into methanol using PtO/GdFeO₃ nanocomposites

Enhanced visible-light-driven CO₂ photoreduction into methanol using PtO/GdFeO₃ nanocomposites

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