Synthesis of nanocurcumin conjugated titanium dioxide bio-nanocomposites for enhanced optical, electrical, and antibacterial applications

IF 2.8 3区物理与天体物理 Q2 PHYSICS, CONDENSED MATTER

Physica B-condensed Matter Pub Date : 2025-04-17 DOI:10.1016/j.physb.2025.417269

P. Anju , Hiba Muhammed , K. Arun , B.K. Bahuleyan , M.T. Ramesan

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引用次数: 0

Abstract

This study explores the synthesis of nanocurcumin (NCur) and its impact on the structural, electrical, and antibacterial properties of titanium dioxide (TiO₂) through a simple solvent-free mechanical mixing. FTIR confirmed NC-TiO₂ interactions, while UV–Vis spectroscopy showed a red shift and a reduced bandgap from 3.571 eV to 2.550 eV. XRD verified the crystalline retention of TiO₂. Morphological analysis using optical microscopy and FE-SEM showed uniform NCur dispersion in TiO₂ up to 6 wt%, beyond which agglomeration occurred. Electrical impedance studies demonstrated a 1.127-fold increase in conductivity at 100 Hz and a reduction in activation energy from 5.37 × 10⁻⁵eV to 5.00 × 10⁻⁵ at 6 wt% NCur. Additionally, the dielectric constant increased by 29 %, enhancing the material's energy storage potential. Antibacterial assays indicated that TiO₂/NCur bio-nanocomposites exhibited significant antibacterial activity against E. coli, increasing efficacy by 183.33 %. These multifunctional properties make TiO₂/NCur composites highly promising for applications in biosafe electronics, energy storage, and antibacterial technologies.

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合成纳米姜黄素共轭二氧化钛生物纳米复合材料，用于增强光学、电学和抗菌应用

本研究通过简单的无溶剂机械混合，探讨了纳米姜黄素（NCur）的合成及其对二氧化钛（TiO2）结构、电学和抗菌性能的影响。FTIR证实了NC-TiO2的相互作用，而UV-Vis光谱显示了红移，带隙从3.571 eV减小到2.550 eV。XRD证实了TiO2的晶体保留。光学显微镜和FE-SEM的形态学分析表明，NCur在TiO2中的分散均匀，达到6 wt%，超过6 wt%会发生团聚。电阻抗研究表明，在100 Hz时，电导率增加了1.127倍，在6 wt% NCur时，活化能从5.37 × 10 - 5eV降低到5.00 × 10 - 5。此外，介电常数提高了29%，增强了材料的储能潜力。抑菌实验表明，TiO2/NCur生物纳米复合材料对大肠杆菌具有显著的抑菌活性，抑菌效果提高了183.33%。这些多功能特性使得TiO2/NCur复合材料在生物安全电子、储能和抗菌技术方面的应用前景非常广阔。

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来源期刊

Physica B-condensed Matter 物理-物理：凝聚态物理

CiteScore

4.90

自引率

7.10%

发文量

703

审稿时长

44 days

期刊介绍： Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work. Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas: -Magnetism -Materials physics -Nanostructures and nanomaterials -Optics and optical materials -Quantum materials -Semiconductors -Strongly correlated systems -Superconductivity -Surfaces and interfaces