Visible light degradation of antibiotics catalyzed by nanoporous carbon/V2O5 nanocomposite: structural, optical and electrochemical properties

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Structure Pub Date : 2024-11-06 DOI:10.1016/j.molstruc.2024.140615

M.V. Arularasu , M. Yasmin Begum , Ali Alamri , Adel Al Fatease

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引用次数: 0

Abstract

In this study, nanoporous carbon (NPC) decorated V₂O₅ (NPC/V₂O₅) nanocomposite synthesized by a hydrothermal technique using biomass-derived NPC nanoflakes towards the application of berberine hydrochloride (BH) dye degradation under visible light irradiation. The prepared samples were characterized by X-ray Diffraction (XRD), Raman spectroscopy, Field Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy (TEM), Energy-Dispersive X-ray (EDX), UV–Visible and Photoluminescence (PL) spectroscopy. Charge transfer resistance was measured by electrochemical impedance spectroscopy (EIS) and liner sweep voltammetry (LSV). XRD studies confirm the orthorhombic crystal structure of NPC/V₂O₅ nanocomposite. FE-SEM and TEM analysis validate their particle-like and sheet-like morphology of V₂O₅ and NPC respectively. Further, UV–visible DRS and PL spectra of the green synthesized NPC/V₂O₅ nanocomposite exhibited a low band-gap and reduced recombination rate compared to the pure counterpart which is better light-absorbing ability in the visible light region. Batch experiments represent the incorporation of NPC and V₂O₅ would lead to an increase the photocatalytic performance of NPC/V₂O₅ toward BH dye degradation. During the photocatalytic reaction, the NPC/V₂O₅ nanocomposite degraded rate around 97.7 % against BH dye within 80 min while pure V₂O₅ degraded 92.5 % of BH dye under same visible light irradiation time. Finally, the cyclic stability experiment exhibits the photocatalyst even stable after five consecutive tests.

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纳米多孔碳/V2O5 纳米复合材料催化的抗生素可见光降解：结构、光学和电化学特性

本研究采用水热技术合成了纳米多孔碳（NPC）装饰的 V2O5（NPC/V2O5）纳米复合材料，并将其用于可见光照射下盐酸小檗碱（BH）染料的降解。制备的样品通过 X 射线衍射 (XRD)、拉曼光谱、场发射扫描电子显微镜 (FE-SEM)、透射电子显微镜 (TEM)、能量色散 X 射线 (EDX)、紫外可见光和光致发光 (PL) 光谱进行表征。电荷转移电阻是通过电化学阻抗谱（EIS）和衬垫扫描伏安法（LSV）测量的。XRD 研究证实了 NPC/V2O5 纳米复合材料的正方晶体结构。FE-SEM 和 TEM 分析分别验证了 V2O5 和 NPC 的颗粒状和片状形态。此外，绿色合成的 NPC/V2O5 纳米复合材料的紫外可见 DRS 和 PL 光谱显示，与纯材料相比，它们具有较低的带隙和较低的重组率，在可见光区域具有更好的光吸收能力。批量实验表明，NPC 和 V2O5 的加入会提高 NPC/V2O5 对 BH 染料降解的光催化性能。在光催化反应过程中，NPC/V2O5 纳米复合材料在 80 分钟内对 BH 染料的降解率约为 97.7%，而在相同的可见光照射时间内，纯 V2O5 对 BH 染料的降解率为 92.5%。最后，循环稳定性实验表明，光催化剂在连续 5 次测试后仍然保持稳定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.