Synthesis and characterization of nanosize copper oxide by non-aqueous sol–gel process

IF 2.2 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Samreen Zahra, Tania Abbas, Asma Sheikh, Hamim Bukhari, Sarwat Zahra
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Abstract

Copper oxide nanoparticles calcined at temperatures varying from 500 to 900 °C were prepared through non-aqueous sol–gel route by using 2-ethyl hexanol as a modifying agent. Phase composition, presence of functional groups, thermal behavior, surface morphology and elemental composition of the prepared samples were identified by XRD, IR, TGA, FESEM and EDX. The results revealed the formation of single phase, i.e., monoclinic tenorite copper oxide with its entire transformation after calcination at 500 °C. Polyhedron shape nanoparticles of size below 100 nm were formed with a significant increase in the particle size and agglomeration due to nucleation growth of nanoparticles with the rise in calcination temperature. The synthesized samples showed a direct band gap of 4.08–4.14 eV. The study revealed that following the non-aqueous sol–gel process with 2-ethyl hexanol as a modifying agent inhibited agglomeration resulting in the formation of well-dispersed nanoparticles.

Abstract Image

Abstract Image

利用非水溶胶-凝胶工艺合成纳米级氧化铜并确定其特性
以 2- 乙基己醇为改性剂,通过非水溶胶-凝胶路线制备了在 500 至 900 °C 温度下煅烧的纳米氧化铜颗粒。通过 XRD、IR、TGA、FESEM 和 EDX 对所制备样品的相组成、官能团的存在、热行为、表面形貌和元素组成进行了鉴定。结果表明,在 500 °C 煅烧后,形成了单相,即单斜佃铜氧化物,并发生了完全转变。随着煅烧温度的升高,由于纳米粒子的成核生长,形成了粒径小于 100 纳米的多面体纳米粒子,且粒径和团聚度显著增加。合成样品的直接带隙为 4.08-4.14 eV。研究表明,以 2- 乙基己醇为改性剂的非水溶胶-凝胶工艺可抑制团聚,从而形成分散良好的纳米粒子。
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来源期刊
CiteScore
4.40
自引率
8.30%
发文量
230
审稿时长
5.6 months
期刊介绍: JICS is an international journal covering general fields of chemistry. JICS welcomes high quality original papers in English dealing with experimental, theoretical and applied research related to all branches of chemistry. These include the fields of analytical, inorganic, organic and physical chemistry as well as the chemical biology area. Review articles discussing specific areas of chemistry of current chemical or biological importance are also published. JICS ensures visibility of your research results to a worldwide audience in science. You are kindly invited to submit your manuscript to the Editor-in-Chief or Regional Editor. All contributions in the form of original papers or short communications will be peer reviewed and published free of charge after acceptance.
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