Scholarlink

<p>This study explores the green synthesis of zinc-doped copper ferrite (Cu<sub>x</sub>Zn<sub>y</sub>Fe₂O₄) nanoparticles using leaf extracts from <i>Terminalia catappa</i> (<i>T. catappa</i> -TC) and <i>Ocimum sanctum</i> (<i>O. sanctum</i> -OS) as reducing and stabilizing agents. The effect of key synthesis parameters—calcination temperature (500–700&#xa0;°C), calcination duration (1–2&#xa0;h), copper-to-zinc ratio (0.4–0.8), and extract volume (100–200&#xa0;ml)—on the structural and catalytic properties of the nanoparticles was investigated. Design of Experiments (DoE) approach with Central Composite Design (CCD) and Response Surface Methodology (RSM) was utilized to optimize the nanoparticle synthesis process, where dye degradation efficiency and antibacterial activity against Escherichia coli (<i>E. coli)</i> were selected as responses. The SEM characterization of the nanoparticles reveals porous morphology with irregular shapes. The X-ray diffraction lattice parameter was determined to be about ~ 8.3880&#xa0;Å, and the crystal size was 45.06&#xa0;nm. The synthesized nanoparticles achieved complete degradation of methylene blue dye within 5&#xa0;min and up to 98.7% degradation of methyl orange for OS samples, while TC samples achieved 93.6%. The antibacterial properties reached an 88.4% toxicity rate against <i>E. coli</i>. Analysis of variance revealed that the degradation efficiency for both methyl orange and methylene blue is significantly affected by the copper-to-zinc ratio when nanoparticles extracted from OS were used and by the extract volume when nanoparticles extracted from TC were used. Moreover, calcination temperature appeared to have a significant influence on the MO dye degradation regardless of the type of plant extracts. Additionally, it was found to play a crucial role in influencing the antibacterial properties of the nanoparticles. The reaction kinetics followed a pseudo-first-order model, with the rate constants exceeding those reported in the existing literature. The resulting nanoparticles demonstrated enhanced catalytic and antibacterial properties, making them promising candidates for wastewater remediation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Optimization of Green Synthesis for Zn-Doped CuFe2O4 Nanoparticles Via Response Surface Methodology: Enhanced Catalytic Performance and Antibacterial Activity

  • 期刊论文

  • 发表日期：

    2025年11月20日

查看全文
  • Zainab Mohammad Redha,
  • Hayat Abdulla Yusuf,
  • Fatima Jassim Mohammed,
  • Maryam Hasan Sayah,
  • Shaima Nader Jaffar

摘要

This study explores the green synthesis of zinc-doped copper ferrite (CuxZnyFe₂O₄) nanoparticles using leaf extracts from Terminalia catappa (T. catappa -TC) and Ocimum sanctum (O. sanctum -OS) as reducing and stabilizing agents. The effect of key synthesis parameters—calcination temperature (500–700 °C), calcination duration (1–2 h), copper-to-zinc ratio (0.4–0.8), and extract volume (100–200 ml)—on the structural and catalytic properties of the nanoparticles was investigated. Design of Experiments (DoE) approach with Central Composite Design (CCD) and Response Surface Methodology (RSM) was utilized to optimize the nanoparticle synthesis process, where dye degradation efficiency and antibacterial activity against Escherichia coli (E. coli) were selected as responses. The SEM characterization of the nanoparticles reveals porous morphology with irregular shapes. The X-ray diffraction lattice parameter was determined to be about ~ 8.3880 Å, and the crystal size was 45.06 nm. The synthesized nanoparticles achieved complete degradation of methylene blue dye within 5 min and up to 98.7% degradation of methyl orange for OS samples, while TC samples achieved 93.6%. The antibacterial properties reached an 88.4% toxicity rate against E. coli. Analysis of variance revealed that the degradation efficiency for both methyl orange and methylene blue is significantly affected by the copper-to-zinc ratio when nanoparticles extracted from OS were used and by the extract volume when nanoparticles extracted from TC were used. Moreover, calcination temperature appeared to have a significant influence on the MO dye degradation regardless of the type of plant extracts. Additionally, it was found to play a crucial role in influencing the antibacterial properties of the nanoparticles. The reaction kinetics followed a pseudo-first-order model, with the rate constants exceeding those reported in the existing literature. The resulting nanoparticles demonstrated enhanced catalytic and antibacterial properties, making them promising candidates for wastewater remediation.