Preparation method for tungsten disulfide/MXene composite material
A composite material, tungsten disulfide technology, applied in chemical instruments and methods, tungsten compounds, carbides, etc., can solve the problems of low electrical conductivity and limited rate performance, and achieve good dispersion, uniform morphology and product output. high rate effect
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[0027] Example 1
[0028] Add 10 mL of concentrated hydrochloric acid to 14 mL of deionized water to make a 5mol / L hydrochloric acid solution, slowly pour 1.5 g of lithium fluoride into the prepared hydrochloric acid solution, and slowly add 0.96 g of Ti to it after stirring for 5 min. 3 AlC 2 The powder was stirred at 40°C for 24h with a magnetic stirrer, then washed with water, centrifuged and dried at 60°C for 12h to obtain the MXene material Ti 3 C 2 powder, the resulting MXene material Ti 3 C 2 SEM pictures of powder such as figure 1 , it can be seen that the MXene material Ti after etching 3 C 2 It exhibits a distinct organ-like multilayer structure.
[0029] Weigh the prepared MXene material Ti 3 C 2 90 mg of powder was poured into 30 mL of deionized water, and ultrasonically dispersed for 30 min. Then, 0.66 g of sodium tungstate dihydrate, 0.78 g of thiourea, and 0.5 g of oxalic acid were added to the MXene solution, and stirred for 20 min to obtain a precurso...
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[0032] Example 2
[0033] Add 10 mL of concentrated hydrochloric acid to 20 mL of deionized water to make a 4mol / L hydrochloric acid solution, slowly pour 1.4 g of lithium fluoride into the prepared hydrochloric acid solution, and slowly add 1.05 g of Ti to it after stirring for 8 minutes. 3 AlC 2 The powder was stirred at 40°C for 36h with a magnetic stirrer, then washed with water, centrifuged, and then vacuum-dried at 60°C for 12h to obtain the MXene material Ti 3 C 2 powder.
[0034] Weigh the prepared MXene material Ti 3 C 2 150 mg of powder was poured into 30 mL of deionized water, and ultrasonically dispersed for 30 min. Then, 0.99 g of sodium tungstate dihydrate, 1.14 g of thiourea, and 0.6 g of oxalic acid were added to the MXene solution, and stirred for 20 min to obtain a precursor solution. Transfer to a hydrothermal reaction kettle with a volume of 50 mL; conduct hydrothermal reaction at 260 °C for 20 h, then naturally cool, after centrifugation, wash three t...
Example Embodiment
[0036] Example 3
[0037] Add 10 mL of concentrated hydrochloric acid to 30 mL of deionized water to make a 3mol / L hydrochloric acid solution, slowly pour 1.5 g of lithium fluoride into the prepared hydrochloric acid solution, and slowly add 1.4 g of Ti to it after stirring for 8 minutes. 3 AlC 2The powder was stirred at 40°C for 24h with a magnetic stirrer, then washed with water, centrifuged, and then vacuum-dried at 60°C for 12h to obtain the MXene material Ti 3 C 2 powder.
[0038] Weigh the prepared MXene material Ti 3 C 2 120 mg of the powder was poured into 30 mL of deionized water, and ultrasonically dispersed for 30 min. Then, 0.5 g of sodium tungstate dihydrate, 0.58 g of thiourea, and 0.45 g of oxalic acid were added to the solution, and stirred for 20 min to obtain a precursor solution. Finally, the precursor solution was transferred. into a hydrothermal reaction kettle with a volume of 50 mL; conduct hydrothermal reaction at 250 °C for 26 h, then cool natural...
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