Photocatalytic CO2 Reduction Performance of Lignin-Derived Carbon Quantum Dots Modified BiOCl/WO3 Composite | Sciact - CRIS-система Института катализа

Photocatalytic CO2 Reduction Performance of Lignin-Derived Carbon Quantum Dots Modified BiOCl/WO3 Composite Научная публикация

Журнал

Applied Surface Science
ISSN: 0169-4332

Вых. Данные

Год: 2026, Том: 720, Номер статьи : 165216, Страниц : 15 DOI: 10.1016/j.apsusc.2025.165216

Ключевые слова

Photocatalytic; BiOCl; Lignin carbon quantum dots; Heterojunction; CO2 reduction

Авторы

Lv Mengqiang ¹ , Taran Oxana P. ^2,3,4 , Sun Fubao ⁵ , Yan Hong ¹ , Li Fen ¹

Организации

1	School of Material Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, China
2	Institute of Chemistry and Chemical Technology SB RAS, FRC “Krasnoyarsk Science Center SB RAS”, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia
3	Institute of Non-Ferrous Metals, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia
4	Boreskov Institute of Catalysis SB Ras, Pr. Akad. Lavrentiev 5, 630090 Novosibirsk Russia
5	Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China

In this study, nitrogen doped carbon quantum dots (NLCQDs) were synthesized by hydrothermal method using alkaline lignin as the carbon source and ethylenediamine as the nitrogen source. Subsequently, a BiOCl/WO3 heterojunction was constructed through a solvothermal approach. By optimizing the molar mass ratio of BiOCl to WO3, BiOCl/WO3-2 composite (BiOCl: WO3 = 5:1) was proved to possess the best catalytic activity. When BiOCl, WO3 and NLCQDs jointly construct the ternary composite catalytic system BiOCl/WO3-2/NLCQDs-Z (Z is the loading amount of NLCQDs, Z = 5, 10, 15 mL), the catalytic activity is significantly improved. Using CO yield as the indicator, BiOCl/WO3-2/NLCQDs-10 was determined to have the best photocatalytic activity. TEM and XPS measurements show that a Z-type heterojunction is formed between BiOCl and WO3, and a built-in electric field is established at the interface. BiOCl/WO3-2/NLCQDs-10 maintained stable catalytic activity for CO2 reduction within 3 h, with a final CO yield of 47.02 μmol · g−1 · h−1, which was 13.3 and 4.2 times higher than BiOCl and BiOCl/WO3-2, respectively. In this study, the separation and transfer path of photo-generated charge were optimized by reasonably constructing BiOCl composite catalytic system, and the photocatalytic performance of CO2 reduction was significantly improved.

Lv M. , Taran O.P. , Sun F. , Yan H. , Li F.
Photocatalytic CO2 Reduction Performance of Lignin-Derived Carbon Quantum Dots Modified BiOCl/WO3 Composite
Applied Surface Science. 2026. V.720. 165216 :1-15. DOI: 10.1016/j.apsusc.2025.165216

Поступила в редакцию:	17 сент. 2025 г.
Принята к публикации:	10 нояб. 2025 г.
Опубликована online:	11 нояб. 2025 г.

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