A graphene-magnetite conductive framework electrode, preparation method and application thereof, and method for treating petrochemical wastewater
A graphene and magnetite technology, which is applied in the graphene-magnetite conductive framework electrode and its preparation, and in the field of petrochemical wastewater treatment, can solve the problems of low electron transfer efficiency limiting practical application, etc., to achieve the benefit of electron transfer, The effect of improving the transmission ability and the transmission distance of electrons
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0030] The invention provides a preparation method of a graphene-magnetite conductive skeleton electrode, comprising the following steps:
[0031] Mix a soluble iron salt solution with a pH value of 6.5 to 7.5, a medium and graphene, and after passing nitrogen gas, add Geobacter sulfurreducens bacteria to carry out the reduction reaction of soluble iron salt, and centrifuge to obtain graphene-magnetite-Geobacter sulfurreducens Bacteria;
[0032] After mixing the graphene-magnetite-Geobacter sulfurreducens cells and Nafion solution, the obtained suspension is coated on the surface of the graphite rod electrode to obtain the graphene-magnetite conductive framework electrode.
[0033] In the present invention, unless otherwise specified, all preparation raw materials are commercially available products well known to those skilled in the art.
[0034] In the present invention, a soluble iron salt solution with a pH value of 6.5-7.5, a culture medium and graphene are mixed, and af...
Embodiment 1
[0078] Mix 100 mL of deionized water, 1.3 mL of concentrated sulfuric acid with a mass concentration of 98% and 1.0 mL of a KOH solution with a mass concentration of 30% to obtain an electrolyte;
[0079] In an electrochemical reactor with a diameter of 5 cm and a height of 5 cm, using a graphite sheet as a working electrode and a platinum sheet as a counter electrode, electrolysis is carried out in the electrolyte. V voltage for 3 minutes, +10V for 10 minutes, -10V for 5 minutes, +10V for 15 minutes, centrifuged at 10,000 rpm for 15 minutes, centrifuged and washed 5 times with deionized water, and dried to obtain Graphene;
[0080] Using NaOH to adjust the pH value of 1L ferric chloride solution with a concentration of 50 mmol / L to 7.0 to obtain a ferric chloride solution with a pH value of 6.0;
[0081] 5mL of vitamin solution (including 0.2g / L biotin, 1g / L vitamin B6, 0.5g / L vitamin B1, 0.5g / L pantothenic acid, 0.5g / L para-aminobenzoic acid, 0.2g / L folic acid, 0.5g / L / L r...
Embodiment 2～6
[0089] The preparation process refers to Example 1, and the difference only lies in the conditional parameters shown in Table 2:
[0090] The technological parameters of table 2 embodiment 2~6
[0091] Condition parameter Example 2 Example 3 Example 4 Example 5 Example 6 Concentrated sulfuric acid mass concentration 1.0％ 1.1％ 1.2％ 1.4％ 1.5％ KOH solution 0.5mL 0.7mL 0.9mL 1.1mL 1.3mL Nafion solution mass concentration 0.3％ 0.4％ 0.6％ 0.8％ 1.0％ +2.5V application time 1min 2min 3min 3min 3min +10V application time (first time) 5min 6min 7min 8min 9min -10V application time 3min 4min 4min 3min 4min +10V application time (second time) 12min 13min 14min 13min 14min Washing times 3 4 4 3 4
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More