Nitrogen-doped iron-based graphene gel, its preparation method and application
A technology of graphene gel and nitrogen doping, which is applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., which can solve the difficulty of iron circulation and the easy leakage of iron ions , Difficult solid-liquid separation and recycling of materials, etc., to achieve the effect of simple process, easy promotion, and great application potential
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0020] The invention discloses a preparation method of nitrogen-doped iron-based graphene gel, comprising the following steps:
[0021] Mixing graphene oxide, iron salt and urea in a solvent to obtain a mixed solution;
[0022] The nitrogen-doped iron-based graphene gel is obtained after reacting the obtained mixed solution.
[0023] Wherein, the concentration of the graphene oxide is 0.1-20 mg / mL, may be 1-10 mg / mL, or may be 2-5 mg / mL; specifically, it may be 0.1 mg / mL, 0.2 mg / mL, 0.5 mg / mL , 0.8mg / mL, 1mg / mL, 2mg / mL, 5mg / mL, 10mg / mL, 15mg / mL, 20mg / mL.
[0024] The concentration of the iron salt is 0.1-20mg / mL, can be 1-10mg / mL, can also be 2-5mg / mL; specifically, it can be 0.1mg / mL, 0.2mg / mL, 0.5mg / mL, 0.8mg / mL mL, 1mg / mL, 2mg / mL, 5mg / mL, 10mg / mL, 15mg / mL, 20mg / mL.
[0025] The concentration of the urea is 0.1-20mg / mL, can be 1-10mg / mL, can also be 2-5mg / mL, specifically can be 0.1mg / mL, 0.2mg / mL, 0.5mg / mL, 0.8mg / mL mL, 1mg / mL, 2mg / mL, 5mg / mL, 10mg / mL, 15mg / mL, 20mg / mL....
Embodiment 1
[0058] In this example, the nitrogen-doped iron-based graphene gel is prepared by the following specific steps:
[0059] Dissolve 20mg graphene oxide, 0.4mmol FeSO in 40mL water 4 ·7H 2 O and 5mg urea, ultrasonic 1h to form a homogeneous solution. Put the solution into a 50mL polytetrafluoroethylene-lined stainless steel reactor and heat at 120°C for 24h. After the reaction, the gel was washed with distilled water to obtain a nitrogen-doped iron-based graphene gel.
[0060] The optical photographs of the gel prepared above are as follows: figure 1 It can be seen that the material has a gel structure. The transmission electron microscope photo of the above-mentioned prepared gel is as follows: figure 2 As shown, it can be seen that the iron oxide nanoparticles in the shape of cubes with uniform distribution and no obvious agglomeration are grown on the graphene sheet. like image 3 Shown, above-mentioned prepared gel is respectively 99.6% and 63.4% to antibiotic tetracyc...
Embodiment 2
[0062] Dissolve 40mg graphene oxide, 0.8mmol FeCl in 40mL water 3 And 10mg urea, ultrasonic 1h to form a homogeneous solution. Put the solution into a 50mL polytetrafluoroethylene-lined stainless steel reactor and heat it at 150°C for 12h. After the reaction, the gel was washed with distilled water to obtain a nitrogen-doped iron-based graphene gel. The removal rates of the above-prepared gel for the antibiotic tetracycline and its TOC were 97.5% and 37.7%, respectively.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More