Scholarlink

<p>Montmorillonite (MMT) clays, owing to their high cation exchange capacity, swelling ability, and layered silicate structure, offer versatile applications in catalysis, material reinforcement, and antimicrobial activity. In this study, organophilic montmorillonite (Ommt) nanoparticles were synthesized via cation exchange of commercial sodium MMT with cetyl pyridinium bromide (CPBr). The structural and morphological features of Ommt were characterized using TEM, XRD, UV-Vis, FT-IR, and simultaneous TG-DTA-dTG analyses. TEM revealed nanosized particles ranging from 48 to 136&#xa0;nm, while XRD confirmed a nanocrystalline structure with a calculated size of ~ 23&#xa0;nm. UV-Vis spectra displayed a bathochromic shift compared to pristine MMT, and FT-IR confirmed successful surfactant intercalation. Thermal analysis demonstrated multistep decomposition with significant char yield, indicating good thermal stability. The antifungal efficacy of Ommt was evaluated against <i>Rhizoctonia solani (R. solani)</i> and <i>Sclerotium rolfsii (S. rolfsii)</i> using a food poisoning assay at concentrations of 50–500 ppm. Results revealed dose-dependent inhibition, with Ommt at 500 ppm achieving up to 67.6% mycelial growth inhibition against <i>R. solani</i>. Statistical analysis (ANOVA) confirmed significant antifungal activity. These findings establish Ommt as a promising, cost-effective nanomaterial with potential applications in agriculture and material science as a thermal-stable and antifungal additive.</p> Graphical abstract <p></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

Development of Thermally Stable Organophilic Montmorillonite Nanoparticles with Antifungal Activity

  • 期刊论文

  • 发表日期：

    2026年7月29日

查看全文
  • Anam Fatima,
  • Abhishek Dusad,
  • Kiran Tewari,
  • Sameena Mehtab,
  • M.G.H. Zaidi

摘要

Montmorillonite (MMT) clays, owing to their high cation exchange capacity, swelling ability, and layered silicate structure, offer versatile applications in catalysis, material reinforcement, and antimicrobial activity. In this study, organophilic montmorillonite (Ommt) nanoparticles were synthesized via cation exchange of commercial sodium MMT with cetyl pyridinium bromide (CPBr). The structural and morphological features of Ommt were characterized using TEM, XRD, UV-Vis, FT-IR, and simultaneous TG-DTA-dTG analyses. TEM revealed nanosized particles ranging from 48 to 136 nm, while XRD confirmed a nanocrystalline structure with a calculated size of ~ 23 nm. UV-Vis spectra displayed a bathochromic shift compared to pristine MMT, and FT-IR confirmed successful surfactant intercalation. Thermal analysis demonstrated multistep decomposition with significant char yield, indicating good thermal stability. The antifungal efficacy of Ommt was evaluated against Rhizoctonia solani (R. solani) and Sclerotium rolfsii (S. rolfsii) using a food poisoning assay at concentrations of 50–500 ppm. Results revealed dose-dependent inhibition, with Ommt at 500 ppm achieving up to 67.6% mycelial growth inhibition against R. solani. Statistical analysis (ANOVA) confirmed significant antifungal activity. These findings establish Ommt as a promising, cost-effective nanomaterial with potential applications in agriculture and material science as a thermal-stable and antifungal additive.

Graphical abstract