Method for preparing nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling surfactant

A technology of surfactant and bismuth oxybromide, which is applied in chemical instruments and methods, solution from normal temperature liquid solvent, single crystal growth, etc., can solve the problems of unfavorable environmental protection, rational application of resources, difficult control of product size, high production cost, etc. problem, to achieve good visible light photocatalytic performance, easy industrial operation, and good crystallinity
CN101691672AInactive Publication Date: 2010-04-07TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2010-04-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the fields of nano / micron material preparation technology and hydro-thermal synthesis technology, and particularly relates to a method for preparing a nano-sheet assembled bismuthyl bromide superstructure by adjusting and controlling a surfactant. The method comprises the following steps: using bismuth nitrate, sodium bromide or hexadecyl trimethyl ammonium bromide as a reactant, adding PEG4000 or PVP4000 as an adjusting and controlling agent, using ethanediol as a solvent, preparing a precursor solution under ultrasonic agitation, and moving the precursor solution into a hydro-thermal reaction kettle in a packing ratio of between 60 and 80 percent; putting the hydro-thermal reaction kettle filled with the mixture into a box-type resistance furnace, heating the kettle to a temperature of between 90 and 150 DEG C, keeping the temperature for 2 to 48 hours, taking the kettle out of the furnace, and cooling the kettle to the room temperature naturally; and washing and centrifugally separating the mixture in the kettle to obtain the required product. The method has the advantages of simple process, easy construction of a whole preparation system, simple and convenient operation, easily controlled condition, low cost, easily controlled product shape and size, high purity, good crystallinity and convenient processing of the product, and is suitable for large scale industrial production.
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Description

technical field

[0001] The invention belongs to the field of nano / micro material preparation technology and hydrothermal synthesis technology, and specifically relates to a method for preparing nanosheets to assemble a bismuth oxybromide superstructure through the regulation and control of surfactants. Background technique

[0002] Bismuth is a p-block element, and its valence in oxygen-containing compounds is generally +3. Bi 3+ There are two valence electrons 6S in the outermost s electron shell of 2 . In the oxide system, due to the strong anti-bonding interaction between the s-occupied orbitals of Bi and the s- and p-orbitals of oxygen, energetically more favorable coordination is often obtained through the deformation of the local coordination environment. The reduced symmetry favors hybridization between the ion-filled s-orbital (HOMO) and the empty p-orbital (LUMO), leading to the Bi 3+ The formation of lone pairs of electrons with stereoactivity. Bi with lone pai...

Claims

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