利用废弃甘蓝叶提取物制备球状 Nb2O5 纳米粒子,用于脱铅和光催化降解亚甲基蓝染料

IF 3.2 4区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
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引用次数: 0

摘要

目前,危险化学品和颜料等水溶性污染物对环境造成了严重危害。铅、铬、汞和砷等重金属即使含量很低,也会对人体造成危害。为了克服这一限制,我们采用了一种新颖的绿色方法来制造 Nb2O5 纳米粒子。基于植物成分的绿色技术是一种低成本、安全且环保的解决方案。在本研究中,我们利用废弃甘蓝叶汁中的植物营养素作为封盖和还原成分。使用 XRD、FT-IR、UV、SEM 和 TEM 技术对产品进行了评估。研究结果表明,经 XRD 分析证实,制得的 Nb2O5 NPs 具有球状几何形状,中值粒径为 9 纳米。扫描电子显微镜研究显示,在 TEM 分析中存在超细、均质的形态团聚和均匀的颗粒,结晶学预测的颗粒为 10-15 nm,正方体 Nb2O5 (001) 平面与 0.39 nm 的晶格边缘测量误差相匹配,清晰的 SAED 衍射信号意味着多晶煅烧粉末。紫外可见光分析证实,350 纳米波长处的激发吸光带可能是由于 Nb-O-Nb 结构中的带电平衡导致氧浓度增加所致。根据 Barrett-Joyner-Halenda (BJH) 方法测定,Nb2O5 纳米球的表面积为 120 m2/g,孔径为 0.592 cm2/g,平均孔径为 15.2 nm。连续吸附容量测定表明,它是一种有效的吸附剂,可用于消除水溶液中的铅(II)离子。吸附剂能够很容易地从产生的液体中去除并反复循环使用。生产出的 Nb2O5 纳米粒子能够去除受污染水道中的有毒重金属和合成色素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Sphere-like Nb2O5 nanoparticles by waste Brassica oleracea leaf extract for lead removal and photocatalytic degradation of methylene blue dye

Sphere-like Nb2O5 nanoparticles by waste Brassica oleracea leaf extract for lead removal and photocatalytic degradation of methylene blue dye
Currently, water-soluble pollutants such as hazardous chemicals and pigments create severe environmental hazards. Heavy metals such as lead, chromium, mercury, and arsenic were dangerous to living beings even at very low levels. To overcome this limitation, Nb2O5 nanoparticles were created utilizing a novel green approach. Based on plant components, green technique is a low-cost, safe, and environmentally good solution. In the present inquiry, we employ phytonutrients from waste Brassica oleracea leaf juice as a capping and reducing component. The product was evaluated using XRD, FT-IR, UV, SEM, and TEM techniques. The findings showed that the produced Nb2O5 NPs had a sphere-like geometry having a median particle dimension of 9 nm confirmed by XRD analysis. SEM study reveals ultrafine, homogeneous morphological agglomerations and uniform granules in TEM analysis, 10–15 nm particles predicted by crystallography, orthorhombic Nb2O5 (001) planes matching 0.39 nm lattice edge measurement error, and a clearly defined SAED diffract signal implying polycrystalline calcined powder. Excitation absorbance bands at 350 nm may be caused by charged balancing in the Nb–O–Nb architecture increasing oxygen concentration confirmed by UV–Vis analysis. The Nb2O5 nanosphere has a surface area of 120 m2/g, 0.592 cm2/g of pores, and a mean pore dimension of 15.2 nm, determined using Barrett-Joyner-Halenda (BJH). A sequential Adsorption capacities assay shown that it is an effective absorber used to eliminate Pb (II) ions from aqueous solutions. Adsorbents was able to be readily removed from the resultant fluid and recycled repeatedly. The produced Nb2O5 Nanoparticles are capable of removing toxic heavy metals and synthetic colors from polluted waterways.
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来源期刊
CiteScore
3.50
自引率
7.70%
发文量
492
审稿时长
3-8 weeks
期刊介绍: The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.
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