Preparation method of a porous nanofiber heterostructure photocatalytic filter
A heterogeneous structure and nano-fiber technology, applied in the field of nano-materials, can solve the problems of low filter adsorption capacity of organic pollutants, low catalytic efficiency of photocatalytic materials, and inability to make full use of sunlight, etc., to achieve increased photocatalytic specific surface area, Small size, effect of increasing volume and cost
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specific Embodiment 1
[0033] Step 1: Preparation of photocatalytic heterostructures composed of plasmonic metal nanostructures and semiconductor nanostructures with tunable spectra from visible to infrared bands
[0034] The gold nanocubes with tunable spectra in the visible to infrared bands were centrifuged three times at 4500 rpm for 15 min, the precipitate was dissolved in deionized water, and an initial solution a with a concentration of 0.1 mol / L was prepared. Centrifuge the cadmium sulfide nanosphere solution at 10,000rpm for 20min five times, dissolve the precipitate in deionized water, and configure it as an initial solution b with a concentration of 3mol / L; dissolve polyethylene glycol molecules in deionized water, and configure it with a concentration of 6mol / L initial solution c; take 20ml each of initial solution b and initial solution c, mix well, then centrifuge 3 times at 5000rpm for 15min, and dissolve the precipitate in deionized water to obtain a mixed solution d with a concentra...
specific Embodiment 2
[0041] Step 1: Preparation of photocatalytic heterostructures composed of plasmonic metal nanostructures and semiconductor nanostructures with tunable spectra from visible to infrared bands
[0042] Centrifuge the silver triangle solution with adjustable spectrum from visible to infrared band at 6000rpm for 25min twice, dissolve the precipitate in deionized water, and prepare initial solution a with a concentration of 0.5mol / L. The heterostructure solution composed of titanium dioxide nanorods and silver nanospheres was centrifuged three times at 8000rpm for 10min, and the precipitate was dissolved in deionized water to form an initial solution b with a concentration of 1mol / L; dimercapto-polyethylene glycol molecules Dissolve in deionized water and configure initial solution c with a concentration of 1mol / L; mix 20ml of initial solution b and initial solution c, stir thoroughly, then centrifuge 3 times at 6000rpm for 15min, and dissolve the precipitate in deionized water to ob...
specific Embodiment 3
[0049] Step 1: Preparation of photocatalytic heterostructures composed of plasmonic metal nanostructures and semiconductor nanostructures with tunable spectra from visible to infrared bands
[0050] Centrifuge the gold-silver alloy nanorod solution with adjustable spectrum from visible to infrared bands at 8000rpm for 15min three times, dissolve the precipitate in deionized water, and prepare initial solution a with a concentration of 2mol / L. Centrifuge the zinc oxide nanostar solution twice at 10,000rpm for 5min, dissolve the precipitate in deionized water, and configure the initial solution b with a concentration of 5mol / L; dissolve 3-aminopropyl triethoxy silicon in deionized water, Prepare the initial solution c with a concentration of 8mol / L; take 20ml each of the initial solution b and the initial solution c, mix them thoroughly, and then centrifuge 3 times at 3000rpm for 10min, and dissolve the precipitate in deionized water to obtain a concentration of 5mol / L. mixed so...
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