High-specific-surface-area atomic layer thick carbon nitride nanosheet and preparation method thereof
A high specific surface area, thick carbon nitride technology, applied in nanotechnology, chemical instruments and methods, nanotechnology and other directions for materials and surface science, can solve the problem of environmental pollution product purity, long preparation operation time, high production cost problem, to achieve the effect of low price, low cost and low production cost
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Embodiment 1
[0034] A high specific surface area atomic layer thick carbon nitride nanosheet and a preparation method thereof. It is characterized in that the steps of the preparation method are:
[0035] Step 1. According to the mass ratio of solid nitrogen source: metal salt is 1: (5-80), the solid nitrogen source and the metal salt are uniformly mixed to obtain a mixture.
[0036] Step 2. Put the mixture into a corundum crucible, then place the corundum crucible containing the mixture in a muffle furnace, and keep it warm at 530-550° C. for 1-3 hours to obtain an intermediate product.
[0037] Step 3, washing the intermediate product with deionized water for 3 to 5 times, separating the solid from the liquid, and drying the obtained solid at 80 to 120° C. for 8 to 10 hours to prepare atomic layer thick carbon nitride nanosheets with high specific surface area.
[0038] The solid nitrogen source is dicyandiamide.
[0039] The metal salt is a mixture a, and the mixture a is a mixture of...
Embodiment 2
[0042] A high specific surface area atomic layer thick carbon nitride nanosheet and a preparation method thereof. It is characterized in that the steps of the preparation method are:
[0043] Step 1. According to the mass ratio of solid nitrogen source: metal salt is 1: (40-110), the solid nitrogen source and the metal salt are uniformly mixed to obtain a mixture.
[0044] Step 2. Put the mixture into a corundum crucible, then place the corundum crucible containing the mixture in a muffle furnace, and keep it warm at 510-530° C. for 1-3 hours to obtain an intermediate product.
[0045] Step 3, washing the intermediate product with deionized water for 3 to 5 times, separating the solid from the liquid, and drying the obtained solid at 80 to 120° C. for 8 to 10 hours to prepare atomic layer thick carbon nitride nanosheets with high specific surface area.
[0046] The solid nitrogen source is diaminomaleonitrile.
[0047] The metal salt is a mixture b, and the mixture b is a mixt...
Embodiment 3
[0050] A high specific surface area atomic layer thick carbon nitride nanosheet and a preparation method thereof. It is characterized in that the steps of the preparation method are:
[0051] Step 1. According to the mass ratio of solid nitrogen source: metal salt is 1: (70-140), the solid nitrogen source and the metal salt are uniformly mixed to obtain a mixture.
[0052] Step 2. Put the mixture into a corundum crucible, then place the corundum crucible containing the mixture in a muffle furnace, and keep it warm at 490-510° C. for 2-4 hours to obtain an intermediate product.
[0053] Step 3, washing the intermediate product with deionized water for 3 to 5 times, separating the solid from the liquid, and drying the obtained solid at 80 to 120° C. for 8 to 10 hours to prepare atomic layer thick carbon nitride nanosheets with high specific surface area.
[0054] The solid nitrogen source is melamine.
[0055] The metal salt is a mixture c, the mixture c is KCl and ZnCl 2 A m...
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