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
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[0025] Example 1: Preparation of flake-shaped cross-assembled pom-shaped and flower-shaped bismuth oxybromide superstructures
[0026] (1) Add 9ml ethylene glycol as solvent in a 50ml beaker, and add 0.5×10 -3 mol of Bi(NO 3 ) 3 .5H 2 O, 0.5×10 -3 mol CTAB and 0.2g PEG4000, after stirring evenly, use a straw to move the precursor into a 12ml reactor, and seal the reactor;
[0027] (2) Then transfer the reaction kettle to a temperature-controlled furnace, control the reaction temperature to 120°C, and heat it at this temperature for 3, 6, 18, and 24 hours.
[0028] (3) After the reaction is completed, take out the reaction kettle and cool to room temperature naturally.
[0029] (4) Take out the precipitate obtained from the reaction, alternately wash with deionized water and absolute ethanol three times, respectively, after each washing is completed, centrifuged to obtain the desired product.
[0030] figure 1 The X-ray powder diffraction patterns (a-d are 3, 6, 18, 24h, respectively) of...
Example Embodiment
[0031] Example 2: Preparation of rosette-like bismuth oxybromide superstructure
[0032] (1) Add 9ml of ethylene glycol as solvent in a 50ml beaker, and add 0.5×10 -3 mol of Bi(NO 3 ) 3 .5H 2 O, 0.5×10 -3 mol of CTAB and 0.2g of PVP4000, after stirring evenly, use a straw to move the precursor into a 12ml reactor, and seal the reactor;
[0033] (2) Then transfer the reaction kettle to a temperature-controlled furnace, control the reaction temperature to 120°C, and heat it at this temperature for 6, 18, and 24 hours.
[0034] (3) After the reaction is completed, take out the reaction kettle and cool to room temperature naturally.
[0035] (4) Take out the precipitate obtained from the reaction, alternately wash with deionized water and absolute ethanol three times, respectively, after each washing is completed, centrifuged to obtain the desired product.
[0036] image 3 The SEM picture of the product produced by the reaction temperature of 120℃ and the reaction time of 6, 18, 24h (ac) i...
Example Embodiment
[0037] Example 3: Preparation of pistachio-like and melaleuca-like bismuth oxybromide superstructures
[0038] (1) Add 9ml ethylene glycol as solvent in a 50ml beaker, and add 0.5×10 -3 mol of Bi(NO 3 ) 3 .5H 2 O, 0.5×10 -3 mol of NaBr and 0.2g of PVP4000, after stirring evenly, use a straw to move the precursor into a 12ml reactor, and seal the reactor;
[0039] (2) Then transfer the reaction kettle to a temperature-controlled furnace, control the reaction temperature to 120°C, and heat at this temperature for 2, 12, 24, and 48 hours.
[0040] (3) After the reaction is completed, take out the reaction kettle and cool to room temperature naturally.
[0041] (4) Take out the precipitate obtained from the reaction, alternately wash with deionized water and absolute ethanol three times, respectively, after each wash is completed, centrifuged to obtain the desired product.
[0042] SEM photo of the product ( image 3 a-d) shows that the reaction time is 2h, and the product obtained is a lar...
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