Graphite phase carbon nitride nanosheet composite material co-modified by gold nanoparticles/ceria quantum dots and its preparation method and application
A graphite phase carbon nitride and gold nanoparticle technology, applied in the field of materials, can solve the problems of reduced redox ability of photogenerated electron holes, upward shift of valence band position, and downward shift of conduction band position, so as to improve photocatalytic effect, Improved absorbency and high controllability
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Embodiment 1
[0036] A gold nanoparticle / ceria quantum dot co-decorated graphitic carbon nitride nanosheet composite (CeO 2 QDs / Au / g-C 3 N 4 ), including the graphite phase carbon nitride nanosheets loaded with ceria quantum dots, the graphite phase carbon nitride nanosheets loaded with ceria quantum dots are decorated with gold nanoparticles, and the graphite phase carbon nitride nanosheets loaded with ceria quantum dots are decorated with gold nanoparticles. The carbon nanosheet is based on a graphite phase carbon nitride nanosheet as a carrier, and ceria quantum dots are supported on the graphite phase carbon nitride nanosheet.
[0037] In this example, the mass percentage of gold nanoparticles in the graphitic carbon nitride nanosheet composite material co-modified by gold nanoparticles / ceria quantum dots is 5%; The mass percentage content of ceria quantum dots in the carbon nanosheet is 10%.
[0038] In this embodiment, the particle size of the ceria quantum dots is less than or equ...
Embodiment 2
[0054] A graphitic carbon nitride nanosheet composite material co-modified with gold nanoparticles / ceria quantum dots, and graphitic carbon nitride nanosheets co-modified with gold nanoparticles / ceria quantum dots in Example 1 Composite (CeO 2 QDs / Au / g-C 3 N 4 ) are basically the same, the only difference is that the mass percentage of gold nanoparticles in the graphite phase carbon nitride nanosheet composite material co-modified with gold nanoparticles / ceria quantum dots in Example 2 is 10%.
Embodiment 3
[0056] A graphitic carbon nitride nanosheet composite material co-modified with gold nanoparticles / ceria quantum dots, and graphitic carbon nitride nanosheets co-modified with gold nanoparticles / ceria quantum dots in Example 1 Composite (CeO 2 QDs / Au / g-C 3 N 4 ) are basically the same, the only difference is that the mass percentage of gold nanoparticles in the graphite phase carbon nitride nanosheet composite material co-modified with gold nanoparticles / ceria quantum dots in Example 3 is 15%.
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