Preparation and characterization of hollow spherical indium tin oxide with micro size by template assisted hydrothermal method

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS Journal of Sol-Gel Science and Technology Pub Date : 2024-05-29 DOI:10.1007/s10971-024-06408-7

Chonglin Qu, Cong Lv, Jiaxiang Liu

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Abstract

Indium tin oxide (ITO), a critical n-type semiconductor material, has widely used in the field of photoelectric material due to its significant conductivity and transparency. In addition, it also has excellent gas sensitivity. In this paper, a unique ITO, hollow spherical ITO powders were prepared by hydrothermal method using PEG-4000 & DL-aspartic acid (DLAA) and PEG-400 & ethylene diamine tetra acetic acid (EDTA) as two composite templates. The preparation conditions of the hollow spherical ITO powders with 2.2 μm diameter were obtained: the precipitator is urea, the molar ratio of DLAA and In³⁺ is 3:1, the temperature of hydrothermal reaction is 120 °C, the time of hydrothermal reaction is 10 h, the molar ratio of PEG-4000 and In³⁺ is 5:1, the temperature and time of calcination is 450 °C and 3 h respectively. Ultimately, hollow spherical ITO powders were prepared and the resulting samples were analyzed for a range of properties. The properties showed as follow: the specific surface area was 64.107 g/m², the resistivity is 164.03 Ω.cm. The formation mechanism of the hollow spherical ITO powders was discussed systematically. Significantly, unique ITO powders with hollow spherical have been obtained by template method, which has application potential in the gas sensitivity of ITO powders.

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利用模板辅助水热法制备微小尺寸的空心球形氧化铟锡并确定其特性

铟锡氧化物（ITO）是一种临界 n 型半导体材料，因其显著的导电性和透明度而被广泛应用于光电材料领域。此外，它还具有出色的气体灵敏度。本文以 PEG-4000 & DL-天冬氨酸（DLAA）和 PEG-400 & 乙二胺四乙酸（EDTA）为两种复合模板，采用水热法制备了一种独特的 ITO--空心球形 ITO 粉末。得到了直径为 2.2 μm 的中空球形 ITO 粉末的制备条件：沉淀剂为尿素，DLAA 和 In3+ 的摩尔比为 3:1，水热反应温度为 120 ℃，水热反应时间为 10 h，PEG-4000 和 In3+ 的摩尔比为 5:1，煅烧温度和时间分别为 450 ℃ 和 3 h。最终，制备出了空心球形 ITO 粉末，并对所得样品进行了一系列性能分析。结果表明：比表面积为 64.107 g/m2，电阻率为 164.03 Ω.cm。系统地讨论了空心球形 ITO 粉末的形成机理。值得注意的是，通过模板法获得了独特的中空球形ITO粉末，这在ITO粉末的气体敏感性方面具有应用潜力。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.