V2O5纳米粒子光活性Cd2+取代及其对有毒染料的催化潜力的探索

IF 1.4 4区 综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES
A. Remila, V. Shally, C. Parvathiraja, T. Darwin
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引用次数: 0

摘要

本研究主要通过共沉淀法合成了镉掺杂五氧化二钒纳米粒子,并对其进行了广泛的表征,重点研究了镉掺杂V2O5中Cd2+浓度的变化。利用x射线衍射(XRD)、傅里叶变换红外光谱(FTIR)和UV-Vis漫反射光谱(UV-Vis DRS)对合成的纳米颗粒进行了广泛的表征,揭示了晶体尺寸在24 ~ 29 nm之间,鉴定了官能团,并确定了能带能在2.07 ~ 1.88 eV之间。通过场发射扫描电镜(FE-SEM)和透射电镜(TEM)的形貌分析证实了棒状纳米结构的存在,但没有团聚。能量色散x射线光谱(EDX)证实Cd2+成功整合到V2O5结构中,而通过x射线光电子能谱(XPS)和光致发光光谱的进一步表征提供了对价态、电子态和材料亲和力的深入了解。研究了掺杂镉的纳米V2O5在不同条件下降解罗丹明B染料的催化活性。pH变化显著影响降解速率,酸性和碱性环境分别由于静电相互作用和催化活性的增加而表现出增强的降解能力。纳米颗粒浓度为10 mg时,催化效率最佳,浓度越高,催化效率越低。由于羟基自由基形成减少,染料浓度的增加与降解率呈负相关。可重复利用性研究表明,在多个循环中,镉掺杂V2O5纳米颗粒的降解效率是一致的,这表明其在可持续废水处理中的应用前景广阔。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Exploration of Photoactive Cd2+ Substitutions on V2O5 Nanoparticles and Their Catalytic Potential Against the Toxic Dye

Exploration of Photoactive Cd2+ Substitutions on V2O5 Nanoparticles and Their Catalytic Potential Against the Toxic Dye

This study focuses on the synthesis and broad characterization of cadmium-doped vanadium pentoxide (Cd-doped V2O5) nanoparticles via the co-precipitation method, emphasizing the investigation of varying Cd2+ concentrations in V2O5. The synthesized nanoparticles were extensively characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS), revealing crystallite sizes ranging from 24 to 29 nm, identifying functional groups, and elucidating bandgap energies from 2.07 to 1.88 eV. Morphological analyses by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) confirmed the presence of rod-like nanostructures without agglomeration. Energy-dispersive X-ray spectroscopy (EDX) confirmed successful Cd2+ integration into the V2O5 structure, while further characterization via X-ray photoelectron spectroscopy (XPS) and photoluminescence spectroscopy provided insights into valency, electron states, and material affinity. The catalytic activity of Cd-doped V2O5 nanoparticles in degrading Rhodamine B (Rh-B) dye was investigated under various conditions. pH variations notably influenced degradation rates, with acidic and alkaline environments demonstrating enhanced degradation capabilities due to electrostatic interactions and increased catalytic activity, respectively. Optimal catalytic efficiency was observed at a nanoparticle concentration of 10 mg, with declining efficiency attributed to surface area saturation at higher concentrations. Increasing dye concentrations inversely correlated with degradation percentages due to reduced hydroxyl radical formation. Reusability studies indicated consistent degradation efficiency over multiple cycles, suggesting promising applications of Cd-doped V2O5 nanoparticles in sustainable wastewater treatment.

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来源期刊
CiteScore
4.00
自引率
5.90%
发文量
122
审稿时长
>12 weeks
期刊介绍: The aim of this journal is to foster the growth of scientific research among Iranian scientists and to provide a medium which brings the fruits of their research to the attention of the world’s scientific community. The journal publishes original research findings – which may be theoretical, experimental or both - reviews, techniques, and comments spanning all subjects in the field of basic sciences, including Physics, Chemistry, Mathematics, Statistics, Biology and Earth Sciences
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