利用木质素碳量子点提升UIO-66-NH<sub>2</sub>材料光催化水解产氢效率研究

doi:10.11896/cldb.24060189

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Abstract Hydrogen is a clean energy source that is considered to be an alternative to conventional fossil fuels due to its renewability, environmental friendliness, and high energy output ratio. Lignin is a type of aromatic renewable biomass material, and is often be used as waste in practice. Actually, it can be made into high-value substances such as carbon quantum dots (CQDs), which have upconversion luminescence properties, it can quickly achieve electron separation, suppress electron hole pair recombination, and other advantages. In this work, classic metal organic framework materials UIO-66-NH₂ were used to achieve efficient photocatalytic hydrogen evolution activity. At the same time, lignin was used as carbon source to prepare carbon dots, which also realized the high value utilization of lignin. The main research is as follows. Firstly, lignin carbon quantum dots were prepared by hydrothermal method at 180 ℃ for 12 h. Then, 10, 15, and 20 mL of the prepared CQDs solution were added into the synthesis system of UIO-66-NH₂, respectively. The CQDs/UIO-66-NH₂ composite materials were prepared using a one-step hydrothermal met-hod at 120 ℃ for 24 h. The photocatalytic hydrogen production activity test shows that, with a wavelength of λ≥380 nm, the hydrogen production rate of CQDs/UIO-66-NH₂ composite material reaches 750 μmol/(h·g), which is 5 times that of UIO-66-NH₂ alone (145 μmol/(h·g)).

Key words： lignin lignin carbon quantum dots metal organic framework heterojunction photocatalytic hydrogen production

Published: 10 August 2025 Online: 2025-08-13

CLC number:

TB33

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	Articles by authors
	LI Chenghan
	ZHU Xudong
	LI Yiping
	YAN Hong

Cite this article:

LI Chenghan,ZHU Xudong,LI Yiping, et al. Study on Improving Hydrogen Production Efficiency of UIO-66-NH₂ Material Photocatalytic Hydrolysis by Using Lignin Carbon Quantum Dots[J]. Materials Reports, 2025, 39(15): 24060189-8.

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https://www.mater-rep.com/EN/10.11896/cldb.24060189 OR https://www.mater-rep.com/EN/Y2025/V39/I15/24060189

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