广谱响应Cu2(OH)2CO3/g-C3N4异质结的构建及其光催化四环素的降解:降解途径及反应机理

doi:10.11896/cldb.24080035

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Abstract Awide-spectrum-driven Cu₂(OH)₂CO₃/g-C₃N₄(Cu/g-C₃N₄) heterojunction catalyst was designed and the photocatalytic tetracycline degradation was investigated in the present work. The morphologies, crystal phases, optical property and so on of the as-prepared photocatalysts were characterized by means of TEM, SEM, XRD, UV-visible light spectroscopy, photoluminescence spectroscopy, etc. Experimental results indicated that the component Cu₂(OH)₂CO₃ gave heterojunction a broad spectrum response to simulated sunlight due to its absorption of visible and near infrared light, and the consist of Z-scheme heterojunction with g-C₃N₄ enhanced photochemical energy conversion efficiency. Particularly, Cu/g-C₃N₄ (1∶4) heterojunction showed the best photocatalytic activity towards TC degradation, including an one order reaction rate constant of 0.017 6 min^-1, which was 3 and 2.1 times higher than that of neat Cu₂(OH)₂CO₃ and g-C₃N₄, as well as perfect photocatalytic stability. Moreover, this work hypothesized three possible photocatalytic degradation pathways of TC over Cu/g-C₃N₄ (1∶4) heterojunction.

Key words： g-C₃N₄ Cu₂(OH)₂CO₃ heterojunction tetracycline photocatalysis

Published: 10 October 2025 Online: 2025-09-24

CLC number:	O641
	O649

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	Articles by authors
	LIANG Hongyu
	XU Jiazhi
	LI Zheng
	LU Guang
	WANG Bin
	LI Tongyu
	LIU Yujia

Cite this article:

LIANG Hongyu,XU Jiazhi,LI Zheng, et al. Construction of Wide-spectrum-driven Cu₂(OH)₂CO₃/g-C₃N₄ Heterojunction and Its Improved Photocatalysis Towards Tetracycline Degradation: Degradation Pathways and Mechanism[J]. Materials Reports, 2025, 39(19): 24080035-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24080035 OR https://www.mater-rep.com/EN/Y2025/V39/I19/24080035

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