A titanium dioxide-based porous block and its preparation method and application
A technology of titanium dioxide and nano-titanium dioxide, which is applied in the field of photocatalytic materials, can solve the problems of low porosity, few photocatalytic components, discount of photocatalytic purification effect, etc., and achieves improved overall mechanical properties, simple preparation process, and high specific surface area. Effect
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Embodiment 1
[0057] In this example, 300 μm paraffin microspheres were selected as the pore-forming agent, 40 μm activated carbon was used as the carbon material, 200 nm metal zinc was used as the low-melting point metal, titanium dioxide P25 powder was used as the photocatalytic nanomaterial, xylene was used as the pore-forming agent dissolving agent, and a titanium dioxide-based Porous block, the preparation process is as follows figure 1 As shown, the specific process is as follows:
[0058] Firstly, take a clean beaker, add 100mL of N-N-dimethylacetamide, 0.7g of chitin and 5g of lithium chloride into it, stir magnetically for 24 hours, and configure a stable sol system; then weigh 15g of nano Add titanium dioxide, 10g of carbon material and 5g of low-melting point metal to the above sol system with stable configuration, and continue magnetic stirring for 8h to make each component evenly dispersed in the sol system; according to the volume ratio of the pore-forming agent to the block m...
Embodiment 2
[0065] In this example, 1mm paraffin microspheres were selected as the pore-forming agent, 10nm activated carbon was used as the carbon material, 200nm metal zinc was used as the low-melting point metal, titanium dioxide P25 powder was used as the photocatalytic nanomaterial, xylene was used as the pore-forming agent dissolving agent, and a titanium dioxide-based Porous block, the specific process is as follows:
[0066] First, take a clean beaker, add 100mL of N-N-dimethylacetamide, 0.6g of chitin, and 6g of lithium chloride into it, and stir magnetically for 24 hours to form a stable sol system; then weigh 10g of nano Titanium dioxide, 2g of carbon material and 5.5g of low-melting point metal were added to the above sol system with stable configuration, and continued magnetic stirring for 8h, so that each component was evenly dispersed in the sol system; according to the volume of the pore-forming agent and the block mold The ratio is 75:100, the composite sol system is inje...
Embodiment 3
[0072] In this example, 500 μm white sugar particles were selected as the pore-forming agent, 50 μm graphite powder was used as the carbon material, 500 nm metal aluminum was used as the low-melting point metal, titanium dioxide P25 powder was used as the photocatalytic nanomaterial, and deionized water was used as the pore-forming agent dissolving agent to prepare titanium dioxide Based porous block, the specific process is as follows:
[0073] First, take a clean beaker, add 100mL of N-N-dimethylacetamide, 0.6g of chitin and 6g of lithium chloride into it, and stir it magnetically for 24 hours to form a stable sol system; then weigh 5g of nano Titanium dioxide, 8g of carbon material and 5g of low-melting point metal were added to the above sol system with stable configuration, and continued magnetic stirring for 8h, so that each component was evenly dispersed in the sol system; according to the volume ratio of the pore-forming agent to the block mold 80:100, the composite so...
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