Method for preparing carbon-coated nanometer molybdenum dioxide material
A carbon-coated nanometer, molybdenum dioxide technology, applied in the preparation/purification of carbon, vanadium oxide, nanotechnology and other directions, can solve the problems of rapid transport of unfavorable carriers, limiting performance, etc., and achieves environmental friendliness and raw materials are easily available. , the effect of simple operation
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Embodiment 1
[0020] Add 1.0g fructose and 1.1g sodium molybdate (Na 2 MoO 4 ), forming a mixture (the number of moles of reducing sugar with Mo 6+ The molar ratio of molarity is 1:1, and the mass ratio of the sum of the mass of sugar and molybdenum precursor to the solvent is 1:19); the mixture is put into a reaction kettle, and crystallized at a heating temperature of 160°C; the crystallization After 4 hours of curing time, the reaction kettle was cooled to room temperature to obtain a crystallized product; the crystallized product was washed with water, and then centrifuged to obtain a carbon-coated nanomolybdenum dioxide material. Its XRD diffraction pattern is shown in figure 2 As shown in 1, the peak position and peak intensity of the diffraction peak are consistent with the JCPDS card (32-0671) of the XRD diffraction peak database, and it can be seen that the prepared MoO is a monoclinic structure 2 product.
Embodiment 2
[0022] Add 0.5g glucose and 0.4g molybdenum trioxide (MoO 3 2H 2 O), forming a mixture (the number of moles of reducing sugar and Mo 6+ The molar ratio of molarity is 1.25:1, and the mass ratio of the sum of the mass of sugar and molybdenum precursor to the solvent is 1:17.5); the mixture is put into a reaction kettle and crystallized at a heating temperature of 160°C; the crystallization After a heating time of 12 hours, the reaction kettle was cooled to room temperature to obtain a crystallized product; the crystallized product was washed with water, and then centrifuged to obtain a carbon-coated nano molybdenum dioxide material. Its XRD diffraction pattern is shown in figure 2 As shown in 3, the peak position and peak intensity of the diffraction peak are consistent with the JCPDS card (32-0671) of the XRD diffraction peak database, and it can be seen that the prepared MoO is a monoclinic structure 2 product; its TEM photo is shown in figure 1 As shown, it can be seen ...
Embodiment 3
[0024] Add 2.8g maltose and 1.2g ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 O), forming a mixture (the number of moles of reducing sugar and Mo 6+ The molar ratio of molarity is 1.20:1, the mass ratio of the sum of the mass of sugar and molybdenum precursor to the solvent is 1:12); put the mixture into the reaction kettle, and crystallize at a heating temperature of 160°C; crystallization After 22 hours of curing time, the reaction kettle was cooled to room temperature to obtain a crystallized product; the crystallized product was washed with water, and then centrifuged to obtain a carbon-coated nano molybdenum dioxide material. Its XRD diffraction pattern is shown in figure 2 As shown in 3, the peak position and peak intensity of the diffraction peak are consistent with the JCPDS card (32-0671) of the XRD diffraction peak database, and it can be seen that the prepared MoO is a monoclinic structure. 2 product.
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