Bismuth nanosheets, and preparation method and application thereof

Abstract

The invention provides bismuth nanosheets, and a preparation method and application thereof. The preparation method comprises the following steps that bismuth nitrate pentahydrate, ascorbic acid and ethylene glycol are mixed, and thus a mixed solution A is obtained; sodium citrate, potassium chloride and water are mixed, and thus a mixed solution B is obtained; and the solution A and the solutionB are mixed, after the pH value is adjusted, reacting is conducted under the ultrasonic condition, and the bismuth nanosheets are obtained. According to the preparation method, the bismuth nanosheetscan be obtained, and size distribution of the prepared bismuth nanosheets are uniform. The preparation method is simple, the cost of adopted raw materials is low, the raw materials are nonhazardous tothe environment, batch and mass production is easy, and the prepared bismuth nanosheets are few in impurity and high in purity; bismuth powder is in a sheet shape, the size is uniform, and obvious agglomerated large particles do not occur; and the average width of the bismuth nanosheets is 0.5-1 [mu]m, and the average thickness of the bismuth nanosheets is 80-100 nm; and a bismuth / BiOCl compositecatalytic material degrades 90% of methyl orange, and the rate constant of a photo-catalytic reaction is 0.0283 min<-1>.

Description

technical field

[0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a bismuth nanosheet, a preparation method and an application thereof. Background technique

[0002] Bismuth is a non-toxic, environmentally friendly and important semi-metallic material, which has been widely used in metallurgy, chemical industry, electronics, aerospace, medical treatment and other fields. In particular, nanobismuth has unique physical and chemical properties, and it can be used in X-ray radiotherapy. Sensitive materials, catalytic materials, thermoelectric materials and other aspects have shown good application prospects.

[0003] At present, the preparation methods of nano-bismuth mainly include thermal plasma method (Surf.Coat.Tech., 2007, 201, 5330-5332), vapor deposition method (Electrochem. Commun., 2007, 9, 2514-2518), electrodeposition method (J.Am.Chem.Soc., 2013,135,18520-18527), liquid phase reduction method (CN 201310385811.3), etc....

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