Mixed organic solvent-thermal method for preparing spherical or hollow spherical BiVO4

一种制备球状或空心球状BiVO<sub>4</sub>的混合有机溶剂热法

Abstract

The invention relates to a mixed organic solvent-thermal method for preparing spherical and hollow spherical BiVO4, and belongs to the technical field of BiVO4. The method comprises the steps of: adding Bi(NO3)3 and NH4VO3 at a stoichiometric ratio of 1:1 to a mixed liquid of ethanol, acetylacetone and concentrated HNO3 at a volume ratio of 9:1:1, sufficiently dissolving, adding oleyl amine at a molar ratio of oleyl amine to Bi(NO3)3 being 15.5:1, adjusting the pH of the solution to 1.5 or 5 with triethanolamine, transferring the solution to a stainless steel autogenous pressure kettle with apolytetrafluoroethylene inner lining at a volume filling degree of 80%, carrying out heat treatment at 100 DEG C for 12 hours, cooling, filtering the product, washing, drying, placing in a muffle furnace, heating to 400 DEG C at a heating rate of 1 DEG C/min and burning for 4 hours. According to the invention, the process is simple; and the target product has a controllable particle appearance and crystalline phase structure, and has excellent application prospects in photocatalysis, electrode materials, pigments, ionic conduction ceramics and other fields.
一种制备球状或空心球状BiVO4的混合有机溶剂热法,属于BiVO4技术领域。向体积比9∶1∶1的乙醇/乙酰丙酮/浓HNO3的混合液中,按化学计量比1∶1加入Bi(NO3)3和NH4VO3,充分溶解,加入油胺,油胺∶Bi(NO3)3的摩尔比为15.5∶1,用三乙醇胺调节溶液的pH为1.5或5,转移至内衬为聚四氟乙烯的不锈钢自压釜(体积填充度为80%),于100℃热处理12h,冷却,产物过滤、洗涤、干燥,置于马弗炉中以1℃/min的升温速率升至400℃灼烧4h。本发明工艺简单、目标产物粒子形貌和晶相结构可控,在光催化、电极材料、颜料及离子导电陶瓷等领域具有优良的应用前景。

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Patent Citations (4)

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NO-Patent Citations (1)

    Title
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