TiO2 纳米粒子的绿色化学合成：深入对比分析和光致发光研究

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2024-11-12 DOI:10.1016/j.nanoso.2024.101408

A. Sangeetha , Adithi Ambli , B.M. Nagabhushana

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引用次数: 0

摘要

使用化学溶剂和天然溶剂通过溶胶-凝胶法合成了二氧化钛纳米粒子。异丙醇被用作还原离子的化学溶剂。此外，茉莉花和厚朴花提取物被单独用作天然溶剂，它们既是还原剂又是稳定剂。研究了天然溶剂相对于化学溶剂对二氧化钛纳米粒子的结构、相、形态和光学特性的影响。使用天然溶剂合成的二氧化钛纳米粒子具有金红石相，而化学合成则具有锐钛矿相。与化学合成相比，绿色合成产生的二氧化钛晶体尺寸更大。合成的二氧化钛在 325 纳米波长的激发下显示出以 397 纳米波长为中心的 PL 发射，在 450 纳米波长、470 纳米波长和 520 纳米波长处有微弱的发射。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Green and chemical synthesis of TiO2 nanoparticles: An In-depth comparative analysis and photoluminescence study

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Green and chemical synthesis of TiO2 nanoparticles: An In-depth comparative analysis and photoluminescence study

Titania nanoparticles were synthesized by sol-gel method using chemical and natural solvents. Isopropanol is used as a chemical solvent for the reduction of ions. Further, Jasminum and Magnolia champaca flower extracts were individually used as natural solvents which acts as both reducing and stabilizing agents. The role of natural solvents over chemical solvents on the structure, phase, morphology, and optical properties of TiO₂ nanoparticles were investigated. Synthesis using natural solvents led to rutile phase of TiO₂ nanoparticles while, chemical synthesis produced anatase phase. Green synthesis yielded larger crystallite size TiO₂ compared to chemical synthesis. Synthesized TiO₂ exhibited PL emission centered at 397 nm with excitation 325 nm associated with weak emissions noticed at 450 nm, 470 nm, and 520 nm.

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .