METHOD OF PRODUCING BISMUTH, IRON AND TUNGSTEN OXIDE POWDER WITH PYROCHLORE PHASE STRUCTURE
	LOMAKIN M S; PROSKURINA O V; GUSAROV V V
	2023-11-28
专利权人	PHYSICAL-TECH INST (PHYS-Non-standard)
申请日期	2023-11-28
专利号	RU2825757-C1
成果简介	NOVELTY - Invention relates to methods of producing nanosized and/or submicron powders of complex oxide of bismuth, iron and tungsten, which can be used in technologies for obtaining materials for photocatalytic processes of oxidation of harmful organic substances, in photocatalytic processes of generating hydrogen for the needs of hydrogen power engineering, as well as materials of conducting layers in solar cells. Composite composition (Bi2O3)0.61(Fe2O3)0.22(WO3), which is a mixture of pyrochlore of composition (Bi2O3)0.52(Fe2O3)0.27(WO3) and Aurivillius phases Bi2WO6, are prepared from solutions of bismuth nitrate, iron nitrate and ammonium paratungstate, taken in stoichiometric ratio, by mixing them to form a suspension. Obtained precursor suspension is evaporated until complete evaporation of the liquid. Obtained precursor powder is heated to temperature of 280–300 °C at rate of 5–10 °C/min and held at this temperature for at least 1 hour, then heated to temperature of 580–600 °C at rate of 10–15 °C/min and held at this temperature for 4–5 hours. Obtained powder is cooled. USE - Chemistry. ADVANTAGE - Invention simplifies the process of producing nanocrystalline particles of a given stoichiometry and smaller dimensions of the powder product (Bi2O3)0.61(Fe2O3)0.22(WO3) and improve environmental friendliness of synthesis technology. 1 cl, 8 dwg, 2 tbl, 3 ex
IPC 分类号	B01J-023/30 ; B01J-023/31 ; B01J-023/745 ; B01J-023/76 ; B22F-009/24 ; B82Y-030/00 ; B82Y-040/00 ; C01G-029/00 ; C01G-041/00 ; C01G-049/00 ; C30B-029/32
国家	俄罗斯
专业领域	材料科学
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/19158
专题	中国科学院新疆生态与地理研究所
作者单位	PHYSICAL-TECH INST (PHYS-Non-standard)
推荐引用方式 GB/T 7714	LOMAKIN M S,PROSKURINA O V,GUSAROV V V. METHOD OF PRODUCING BISMUTH, IRON AND TUNGSTEN OXIDE POWDER WITH PYROCHLORE PHASE STRUCTURE. RU2825757-C1[P]. 2023.

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