Green synthesis of niobium-doped ZnO nanoparticles using Eucalyptus globulus leaf extract for enhanced photocatalytic dye degradation and antibacterial applications

IF 3.4 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biocatalysis and agricultural biotechnology Pub Date : 2025-07-01 DOI:10.1016/j.bcab.2025.103687

Tasmia Amanuallah , Iqra Muneer , Dilawar Ali , Asad Abbas , Imama Arif , Farhat Yasmeen

{"title":"Green synthesis of niobium-doped ZnO nanoparticles using Eucalyptus globulus leaf extract for enhanced photocatalytic dye degradation and antibacterial applications","authors":"Tasmia Amanuallah , Iqra Muneer , Dilawar Ali , Asad Abbas , Imama Arif , Farhat Yasmeen","doi":"10.1016/j.bcab.2025.103687","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a novel green hydrothermal synthesis of niobium (Nb)-doped zinc oxide (ZnO) nanoparticles using <em>Eucalyptus globulus</em> leaf extract as a natural reducing and stabilizing agent. Nb doping was performed at 2 %, 5 %, and 8 % concentrations to optimize photocatalytic and antibacterial performance. Structural and morphological analyses via FTIR, XRD, DLS, EDX, SEM, and UV–Vis spectroscopy confirmed successful synthesis. XRD revealed a hexagonal wurtzite structure with crystallite sizes between 24 and 27 nm, and DLS showed hydrodynamic diameters ranging from 93 to 141 nm. UV–Vis analysis demonstrated a significant band gap reduction from 3.21 eV (pure ZnO) to 2.15 eV for 8 % Nb-doped ZnO, enhancing visible light absorption. The 8 % Nb/ZnO sample achieved 98 % degradation of methylene blue within 120 min under sunlight—outperforming lower doping levels and many reported green-synthesized ZnO systems. Additionally, it exhibited strong antibacterial activity against both Gram-positive and Gram-negative strains. These results highlight the effectiveness of optimized Nb doping and plant-mediated synthesis in producing multifunctional nanomaterials for sustainable water treatment and microbial control.</div></div>","PeriodicalId":8774,"journal":{"name":"Biocatalysis and agricultural biotechnology","volume":"67 ","pages":"Article 103687"},"PeriodicalIF":3.4000,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biocatalysis and agricultural biotechnology","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1878818125002002","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOTECHNOLOGY & APPLIED MICROBIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

This study presents a novel green hydrothermal synthesis of niobium (Nb)-doped zinc oxide (ZnO) nanoparticles using Eucalyptus globulus leaf extract as a natural reducing and stabilizing agent. Nb doping was performed at 2 %, 5 %, and 8 % concentrations to optimize photocatalytic and antibacterial performance. Structural and morphological analyses via FTIR, XRD, DLS, EDX, SEM, and UV–Vis spectroscopy confirmed successful synthesis. XRD revealed a hexagonal wurtzite structure with crystallite sizes between 24 and 27 nm, and DLS showed hydrodynamic diameters ranging from 93 to 141 nm. UV–Vis analysis demonstrated a significant band gap reduction from 3.21 eV (pure ZnO) to 2.15 eV for 8 % Nb-doped ZnO, enhancing visible light absorption. The 8 % Nb/ZnO sample achieved 98 % degradation of methylene blue within 120 min under sunlight—outperforming lower doping levels and many reported green-synthesized ZnO systems. Additionally, it exhibited strong antibacterial activity against both Gram-positive and Gram-negative strains. These results highlight the effectiveness of optimized Nb doping and plant-mediated synthesis in producing multifunctional nanomaterials for sustainable water treatment and microbial control.

Abstract Image

查看原文本刊更多论文

利用蓝桉叶提取物绿色合成铌掺杂ZnO纳米粒子，增强光催化染料降解和抗菌应用

本研究提出了一种新的绿色水热合成铌（Nb）掺杂氧化锌（ZnO）纳米颗粒的方法，该方法以蓝桉叶提取物为天然还原剂和稳定剂。在2%、5%和8%的浓度下掺杂铌，以优化光催化和抗菌性能。通过FTIR， XRD， DLS， EDX， SEM和UV-Vis光谱分析证实了合成的成功。XRD分析表明，DLS为六方纤锌矿结构，晶粒尺寸在24 ~ 27 nm之间，DLS的水动力直径在93 ~ 141 nm之间。紫外可见分析表明，8% nb掺杂ZnO的带隙从3.21 eV（纯ZnO）显著降低到2.15 eV，增强了可见光吸收。在阳光下，8% Nb/ZnO样品在120分钟内实现了98%的亚甲基蓝降解-优于低掺杂水平和许多报道的绿色合成ZnO体系。此外，对革兰氏阳性和革兰氏阴性菌株均有较强的抗菌活性。这些结果突出了优化的铌掺杂和植物介导合成在生产用于可持续水处理和微生物控制的多功能纳米材料方面的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Biocatalysis and agricultural biotechnology Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

7.70

自引率

2.50%

发文量

308

审稿时长

48 days

期刊介绍： Biocatalysis and Agricultural Biotechnology is the official journal of the International Society of Biocatalysis and Agricultural Biotechnology (ISBAB). The journal publishes high quality articles especially in the science and technology of biocatalysis, bioprocesses, agricultural biotechnology, biomedical biotechnology, and, if appropriate, from other related areas of biotechnology. The journal will publish peer-reviewed basic and applied research papers, authoritative reviews, and feature articles. The scope of the journal encompasses the research, industrial, and commercial aspects of biotechnology, including the areas of: biocatalysis; bioprocesses; food and agriculture; genetic engineering; molecular biology; healthcare and pharmaceuticals; biofuels; genomics; nanotechnology; environment and biodiversity; and bioremediation.