Sunlight Driven Degradation of Drug Residues Using CuO Incorporated- Zeolite Supported- Graphitic Carbon Nitride

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2024-11-16 DOI:10.1007/s10562-024-04866-w

Anju John, Mekha Susan Rajan, Jesty Thomas

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Abstract

Copper oxide nanoparticles incorporated-zeolite supported-graphitic carbon nitride (CuO/g–C₃N₄/Zeolite Y) catalyst was fabricated through a facile hydrothermal method, in which CuO nanoparticles were produced via precipitation. The synthesized CuO/g–C₃N₄/Zeolite Y was examined using characterization techniques such as FT-IR, XRD, XPS, TEM, SEM, EDX, TG, BET, DRS, and PL. BET analysis revealed that integrating zeolite and CuO has increased the surface area of graphitic carbon nitride. Increased separation efficiency and reduced recombination rates of photogenerated electrons and holes in CuO/g–C₃N₄/Zeolite Y were confirmed by photoluminescence studies. The CuO/g–C₃N₄/Zeolite Y catalyst exhibits enhanced efficiency for degrading MB and CV dyes compared to pristine g-C₃N₄ under sunlight exposure. The active species studies demonstrated that hydroxyl radicals, superoxide anion radicals and holes involve in the photocatalytic destruction of pollutants. Additionally, the CuO/g–C₃N₄/Zeolite Y composite efficiently degraded the antibiotic ceftazidime. Intermediates generated during the degradation process were identified, and plausible degradation pathways for ceftazidime were proposed through LC–MS analysis. This study implies that the synthesized catalyst can be used in the wastewater cleanup process to eliminate persistent organic contaminants and pharmaceutical pollutants under sunlight irradiation.

Graphical Abstract

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使用掺入氧化铜的沸石支撑氮化石墨碳在阳光下降解药物残留物

通过一种简便的水热法制造了掺入氧化铜纳米颗粒的沸石支撑氮化石墨化碳（CuO/g-C3N4/Zeolite Y）催化剂，其中氧化铜纳米颗粒是通过沉淀产生的。利用傅立叶变换红外光谱、XRD、XPS、TEM、SEM、EDX、TG、BET、DRS 和 PL 等表征技术对合成的 CuO/g-C3N4/Zeolite Y 进行了检测。BET 分析表明，沸石和氧化铜的结合增加了氮化石墨碳的表面积。光致发光研究证实，CuO/g-C3N4/沸石 Y 提高了分离效率，降低了光生电子和空穴的重组率。与原始 g-C3N4 相比，CuO/g-C3N4/沸石 Y 催化剂在阳光照射下降解 MB 和 CV 染料的效率更高。活性物种研究表明，羟基自由基、超氧阴离子自由基和空穴参与了污染物的光催化破坏。此外，CuO/g-C3N4/沸石 Y 复合材料还能有效降解抗生素头孢他啶。通过 LC-MS 分析，确定了降解过程中产生的中间产物，并提出了头孢他啶的合理降解途径。这项研究表明，合成的催化剂可用于废水净化过程，在阳光照射下消除持久性有机污染物和药物污染物。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.