Size controlled fabrication of ordered monodispersed iron, cobalt and cobalt iron composite oxides nanoparticles arrays: A common block copolymer methodology

Tandra Ghoshal; Michael A. Morris

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Size controlled fabrication of ordered monodispersed iron, cobalt and cobalt iron composite oxides nanoparticles arrays: A common block copolymer methodology

机译：尺寸控制的有序单分散铁，钴和钴铁复合氧化物纳米粒子阵列：常见的嵌段共聚物方法

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摘要

Hexagonally arranged dense monodispersed iron oxide, cobalt oxide and cobalt iron oxide nanoparticle arrays are generated using block copolymer (BCP) inclusion methodology on substrate. Polystyrene-b-poly(ethylene oxide) (PS-b-PEO) BCP nanopatterns forming perpendicularly oriented PEO cylinders is used as a structural template. The PEO microdomains are modified by ethanol which selectively incorporate metal ions through chemical coordination. The formation of oxides and composites and removal of polymers is performed by UV/ Ozone treatment. The precursor-solution concentrations and aging time are tuned to create uniform diameter, ordered monodispersed nanoparticles. The stability of the oxides is investigated by high temperature calcination. XPS reveals the phases of as-prepared oxides and after annealing. The cation distribution is determined for the nanocomposite, from curve fitted Co 2p and Fe 2p spectra, (Co_(0.4)Fe_(0.6)HCo_(0.6)Fe_(1.4)]O_4 corresponds to cobalt ferrite, CoFe_2O_4 represent cations in tetrahedral and octahedral sites respectively. The diameter, height, defectivity of nanoparticle arrays for all the oxides are examined.

机译：使用嵌段共聚物（BCP）包含方法在基质上产生六角形布置的致密致密的氧化铁，氧化钴和氧化钴氧化铝纳米粒子阵列。聚苯乙烯-B-聚（环氧乙烷）（普通氧化物）（PS-B-PEO）BCP纳米透镜形成垂直定向的PEO汽缸用作结构模板。 PEO微氮粉末通过化学配位选择性地掺入金属离子的乙醇。通过UV /臭氧处理进行氧化物和复合材料的形成和除去聚合物。调整前体溶液浓度和老化时间以产生均匀的直径，有序的单分散纳米颗粒。通过高温煅烧研究氧化物的稳定性。 XPS揭示了制备氧化物的阶段和退火后。从曲线配合CO 2P和Fe 2P光谱法测定阳离子分布，（CO_（0.4）Fe_（0.6）HCO_（0.6）Fe_（1.4））O_4对应于钴铁氧体，CoFe_2O_4代表四面体和八面体的阳离子分别检查了所有氧化物的直径，高度，纳米颗粒阵列的缺陷。

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来源
《Materials Science and Engineering》 |2021年第7期|115142.1-115142.8|共8页
作者
Tandra Ghoshal; Michael A. Morris;
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School of Chemistry AMBER and CRANN Trinity College Dublin Dublin D02AK60 Ireland;

School of Chemistry AMBER and CRANN Trinity College Dublin Dublin D02AK60 Ireland;

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正文语种 eng
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关键词
Block copolymers; Oxides; Composites; Nanoparticles; Arrays;

机译：嵌段共聚物;氧化物;复合材料;纳米粒子;阵列;

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机译：使用嵌入氧化锆纳米粒子阵列中的单分散氧化铁纳米粒子作为催化剂的离散直径和均匀尺寸的单壁碳纳米管的直径控制合成
2. Characterization of single-walled carbon nanotubes synthesized using iron and cobalt nanoparticles derived from self-assembled diblock copolymer micelles [J] . Qiang Fu, Luke Reed, Jie Liu Applied Organometallic Chemistry . 2010,第8期

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4. A Facile Block Copolymer Inclusion Technique for Large Scale Monodisperse Hexagonal Arrays of Superparamagnetic Iron Oxides Nanodots [C] . T. Ghoshal, T. Maity, J. F. Godsell, NSTI nanotechnology conference and expo;Nanotech conference expo;NSTI-Nanotech 2012;TechConnect world annual conference expo . 2012

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5. Synthesis and self-assembly of monodispersed cobalt-platinum, iron-cobalt-platinum, iron-paladium, and iron-platinum nanoparticles. [D] . Chen, Min. 2002

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6. Mechanochemical Synthesis of Iron and Cobalt Magnetic Metal Nanoparticles and Iron/Calcium Oxide and Cobalt/Calcium Oxide Nanocomposites [O] . Dr. Varun Chaudhary, Yaoying Zhong, Dr. Harshida Parmar, 2018

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机译：使用氧化锆纳米粒子阵列的单分散氧化铁纳米颗粒作为催化剂，直径控制的离散和均匀的单壁碳纳米管的分立和均围覆碳纳米管
8. Development of a Hot-Gas Cleanup System for Integrated Coal-Gasification/Molten-Carbonate Fuel-Cell Power Plants. Quarterly Report No. 1, October 1-December 31, 1982 (Iron Orthosilicate, Cobalt Titanate, Iron Chromite, Cobalt Aluminate, Manganous Oxide). [R] . Anderson, G. L., Garrigan, P. C., Claar, T. D., 1983

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Size controlled fabrication of ordered monodispersed iron, cobalt and cobalt iron composite oxides nanoparticles arrays: A common block copolymer methodology

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