利用硝酸盐有机前驱体合成 InGaMgO4 的特点及其物理性质研究

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Russian Journal of Inorganic Chemistry Pub Date : 2024-08-23 DOI:10.1134/s003602362460117x
M. N. Smirnova, O. N. Kondrat’eva, G. E. Nikiforova, A. D. Yapryntsev, A. A. Averin, A. V. Khoroshilov
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引用次数: 0

摘要

摘要 本研究报告介绍了通过对甘氨酸、淀粉和硝酸 PVA 前体进行两阶段热处理生产氧化物 InGaMgO4 的可能性。通过粉末 X 射线衍射研究了在低温(≈ 90°С)下加热形成的产物。研究发现,由甘氨酸-硝酸盐前驱体形成的粉末含有纳米晶 In2O3,而聚合物-硝酸盐组合物的干燥会导致产生热稳定的 X 射线无定形产物。在 800°C 以上的温度下退火,可以合成不含杂质相的粉末 InGaMgO4。对硝酸甘油前驱体形成的粉末进行高温处理也能生成 InGaMgO4,但不能去除 In2O3 杂质。使用扫描电子显微镜观察发现,由聚合物-硝酸盐前驱体合成的单相 InGaMgO4 粉末具有相似的晶粒结构,但在晶粒尺寸分布上有所不同。这种差异可能是由于用于制备前驱体的淀粉和 PVA 大分子的结构特征造成的。使用差示扫描量热法、拉曼光谱和漫反射光谱对氧化物 InGaMgO4 进行了表征。其带隙能 Eg 值是用陶克法确定的。
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Features of Synthesis of InGaMgO4 from Nitrate-Organic Precursors and Study of Its Physical Properties

Abstract

This work reports on the possibility of producing oxide InGaMgO4 by two-stage heat treatment of glycine-, starch- and PVA-nitrate precursors. The products formed as a result of their heating at low temperatures (≈ 90°С) were studied by powder X-ray diffraction. It was found that the powder formed from the glycine-nitrate precursor contains nanocrystalline In2O3, and drying of the polymer-nitrate compositions leads to the production of a thermally stable X-ray amorphous product. Its annealing at temperatures above 800°C allows synthesizing powder InGaMgO4 free of impurity phases. High-temperature treatment of the powder formed from the glycine-nitrate precursor also leads to the production of InGaMgO4, but does not remove the In2O3 impurity. Using scanning electron microscopy, it was found that single-phase InGaMgO4 powders synthesized from polymer-nitrate precursors have a similar grain structure but differ in grain size distribution. Presumably, this difference is due to the structural features of starch and PVA macromolecules used for the preparation of precursors. Oxide InGaMgO4 was characterized using differential scanning calorimetry, Raman and diffuse reflectance spectroscopy. The value of its band gap energy Eg was determined using the Tauc method.

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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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