Preparation method, optical fiber network and photocatalyst network of a kind of loading heterogeneous structure photocatalyst material optical fiber network
A technology of heterogeneous structure and optical fiber network, which is applied in the field of photocatalyst degradation, can solve the problem of low utilization rate of ultraviolet light, and achieve the effects of low light source power requirements, improved utilization efficiency, and simple preparation process
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Embodiment 1
[0029] TiO with an average particle size of 25nm 2 100 g of nanoparticles were added to 500 ml of deionized water, and 0.2 M carboxymethyl cellulose (CMC) was added to make a mixed solution. The surfaces of 30 ultraviolet optical fibers were ultrasonically cleaned and immersed in the solution. After taking out and drying, it was sintered in a vacuum oven at 650°C for 40 minutes. Immerse in 50mM H after cooling 2 PtCl 6 solution, sintered in a vacuum oven at 500°C for 30 minutes after drying, see appendix figure 1 , it can be seen that the Pt nanoparticles are uniformly dispersed on the surface of the oxide titania after sintering. After weaving into a mesh, the head of the fiber bundle was polished, and a 10mW UV LED (wavelength 365nm) was connected to make a loaded TiO 2 / Pt heterostructured photocatalyst mesh. The photocatalyst net was immersed in water containing 2% methyl orange (MO), and 10 minutes after turning on the light source, the measured degradation rate of M...
Embodiment 2
[0031] Cu with an average particle size of 5000 nm 2 100 g of O nanoparticles were added to 500 ml of deionized water, and 0.1 M of PVA was added to make a mixed solution. The surfaces of 20 ultraviolet optical fibers were ultrasonically cleaned and immersed in the solution. After taking out and drying, it was sintered at 450°C for 20 minutes in an Ar gas shielded furnace. Immerse in 90mM HAuCl after cooling 4 solution, dried and sintered at 400°C for 20 minutes in an Ar gas protection furnace, see appendix figure 2 , it can be seen that the gold nanoparticles are uniformly dispersed on the surface of the cuprous oxide particles. After weaving into a mesh, the head of the fiber bundle was polished, and an external 10mW UV LED (wavelength 365nm) was made to load Cu 2O / Au heterostructured photocatalyst network. The photocatalyst net was placed in an air box containing 0.1% CO (a small electric fan was placed at the bottom to promote air flow), and 10 minutes after the light...
Embodiment 3
[0033] Fe with an average particle size of 340nm 2 O 3 160g of nanoparticles were added to 500ml of deionized water, and 0.1M of PVA was added to make a mixed solution. The surface of 20 ultraviolet optical fibers was ultrasonically cleaned and immersed in the solution. After taking out and drying, it was sintered at 750°C for 20 minutes in an Ar gas protection furnace. Immerse in 90mM HAuCl after cooling 4 After drying, the solution was sintered at 500°C for 20 minutes in an Ar gas protection furnace. After weaving into a mesh, polish the head of the fiber bundle and connect it to a 10mW UV LED (wavelength 365nm) to make Fe-loaded 2 O 3 / Au heterostructured photocatalyst net. The photocatalyst net is placed in an air box containing 0.05% formaldehyde (a small electric fan is placed at the bottom to promote air flow), and 20 minutes after the light source is turned on, the measured conversion rate of formaldehyde is 85%, and the conversion rate in the comparative test wit...
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