Coated magnetic nanocomposite material used for sewage treatment, and preparation method and application thereof
A nano-composite material, sewage treatment technology, applied in water/sewage treatment, adsorbed water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem of clogging equipment, unable to meet the requirements of water pollutant purification, secondary pollution, etc. question
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0033] In another embodiment of the present invention, the present invention relates to a method for preparing a magnetic iron oxide / mesoporous carbon nanocomposite for sewage treatment, comprising the following steps:
[0034] (1) Dissolving the inorganic iron salt in the mixed solution of water and ethanol to prepare an iron ion solution; in the iron ion solution, the concentration range of the iron inorganic salt solution is 0.1-1 mole / liter; In the solution, the volume ratio of water and ethanol is 1:1.
[0035] (2) Immerse the iron ion solution into the mesoporous carbon powder (such as mesoporous carbon CMK-3) (or add the mesoporous carbon powder into the iron ion solution), stir and disperse for 3-20 hours, preferably stir and disperse for 12 hours Finally, dry in an oven at 0-80°C, preferably at 50°C, to prepare the magnetic iron oxide / mesoporous carbon nanocomposite precursor I.
[0036] (3) The magnetic iron oxide / mesoporous carbon nanocomposite precursor Ⅰ is place...
Embodiment 1
[0045] Example 1: Preparation of magnetic iron oxide / mesoporous carbon nanocomposites
[0046] Dissolve 0.8062 grams (g) of ferric nitrate nonahydrate in a mixed solution of 5 milliliters (mL) of water and 5 milliliters (mL) of ethanol. 1 gram (g) of mesoporous carbon CMK-3 was stirred and dispersed for 12 hours, and then dried in an oven at 50°C for 12 hours. The dried sample is placed in a glass bottle filled with 50 milliliters (mL) of ammonia water along with the container, and the sample is not in contact with ammonia water. The glass bottle was kept in a 60°C oven for 3 hours, and then the hydrolyzed sample was dried in a 50°C oven for 12 hours. The obtained solid powder is loaded with a porcelain boat, put into a tube furnace with argon gas, and calcined at 500°C to obtain a magnetic iron oxide / mesoporous carbon nanocomposite with a loading capacity of 10wt% ferric oxide. material (encapsulated magnetic iron oxide mesoporous carbon nanocomposite), its TEM picture is s...
Embodiment 2
[0048] Example 2: Using the magnetic iron oxide / mesoporous carbon nanocomposite prepared in Example 1 for the degradation of methylene blue
[0049] Weigh 10 milligrams (mg) of the coated magnetic iron oxide mesoporous carbon nanocomposite material prepared in Example 1, and place 25 milliliters (mL) of concentration in the methylene blue aqueous solution of 750 mg / liter (mg / L) , after ultrasonic dispersion for 10 minutes, put it in the dark for 2 hours. After the adsorption-desorption was basically balanced, 2 milliliters (mL) of hydrogen peroxide was added, ultrasonicated for 10 minutes, and then placed in a 40°C water bath for reaction. Finally, the degradation efficiency of methylene blue was detected by a UV-visible spectrophotometer, and the results are shown in Figure 4 .
[0050] Figure 4 The degradation curve of methylene blue under the action of magnetic iron oxide / mesoporous carbon nanocomposites is shown in , from Figure 4 It can be seen that the high-concen...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More