Photocatalytic CO2 Reduction Performance of Lignin-Derived Carbon Quantum Dots Modified BiOCl/WO3 Composite
Full article
| Journal |
Applied Surface Science
ISSN: 0169-4332
|
| Output data |
Year: 2026,
Volume: 720,
Article number
: 165216,
Pages count
: 15
DOI:
10.1016/j.apsusc.2025.165216
|
| Tags |
Photocatalytic; BiOCl; Lignin carbon quantum dots; Heterojunction; CO2 reduction |
| Authors |
Lv Mengqiang
1
,
Taran Oxana P.
2,3,4
,
Sun Fubao
5
,
Yan Hong
1
,
Li Fen
1
|
| Affiliations |
| 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
|
|
Funding (2)
|
1
|
National Natural Science Foundation of China
|
22278099
|
|
2
|
National Natural Science Foundation of China
|
U23A20135
|
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.