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Carbon sponge material and preparation method and application thereof

A carbon sponge and raw material technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve the problems of easy saturation of adsorption and difficult regeneration, limitations on the wide application of adsorption methods, and high processing costs

Inactive Publication Date: 2017-05-31
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the commonly used adsorbents for the treatment of oily wastewater have high treatment costs, are easily saturated and difficult to regenerate, which limits the wide application of adsorption methods.

Method used

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  • Carbon sponge material and preparation method and application thereof
  • Carbon sponge material and preparation method and application thereof

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Experimental program
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Embodiment 1

[0017] Firstly, the improved Hummers’ method was used to prepare graphite oxide from graphite powder (S. Y. Dong, J. Y. Sun, Y. K. Li, C. F. Yu, Y. H. Li, J. H. Sun, ZnSnO 3 hollow nanospheres / reduced graphene oxide nanocomposites as high-performance photocatalysts fordegradation of metronidazole, Appl. Catal. B Environ. 144 (2014) 386-393), and then the prepared graphite oxide was prepared into graphite oxide aqueous solutions with mass concentrations of 2mg / mL, 4mg / mL, 6mg / mL, 8mg / mL and 10mg / mL respectively, adding 1.5% graphite oxide The carboxymethyl cellulose of aqueous solution quality is then reduced by hydrothermal reaction at 120°C for 8 hours to obtain a carbon sponge with good plasticity, which is freeze-dried after dialysis to obtain a macroscopic monolithic carbon sponge material. After the adsorption test of n-hexane in water, the results show that the removal rates of n-hexane in water by the macroscopic monolithic block carbon fiber material are 87.49%, 99....

Embodiment 2

[0019] First, the improved Hummers' method was used to prepare graphite oxide from graphite powder, and then the prepared graphite oxide was prepared into a graphite oxide aqueous solution with a mass concentration of 4 mg / mL, and 0.5%, 1%, 1.5%, 2% and 3% were added respectively. % graphite oxide aqueous solution quality of carboxymethyl cellulose, and then hydrothermal reaction at 120 ℃ for 8 hours to obtain a carbon sponge with good plasticity, and after dialysis treatment, freeze-dry to obtain a macroscopic monolithic carbon sponge material. After the adsorption test of n-hexane in water, the results show that the removal rates of n-hexane in water by the macroscopic monolithic block carbon fiber material are 79.55%, 86.45%, 99.86%, 96.56% and 94.18%, respectively.

[0020] figure 1 It is the SEM picture of the carbon sponge material prepared under optimal conditions. It can be seen from the figure that the material structure is porous and the distribution range is relativ...

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Abstract

The invention discloses a carbon sponge material and a preparation method and an application thereof, and belongs to the synthetic technical field of oil absorption materials. The key points of the technical scheme of the invention are as follows: firstly, using an improved Hummers method to prepare graphite oxide with graphite powder as a raw material, preparing a graphite oxide aqueous solution with a mass concentration of 2-10 mg / mL by using the prepared graphite oxide, adding carboxymethylcellulose accounting for 0.5-3% of the mass of the graphite oxide aqueous solution, performing hydrothermal reaction at 120 DEG C for 8h in a hydrothermal reactor to obtain plasticity carbon sponge, and performing dialysis treatment and freeze drying to obtain a macroscopic bulk carbon sponge material, wherein the carbon sponge material can be applied to treatment of oily wastewater. The macroscopic bulk carbon sponge material with large adsorption capacity and easy regeneration property is synthesized, and a method for obtaining a recyclable adsorption material by a simpler preparation process is provided.

Description

technical field [0001] The invention belongs to the technical field of synthesis of oil-absorbing materials, and in particular relates to a carbon sponge material and its preparation method and application. Background technique [0002] Oily substances enter the water environment through different ways to form oily wastewater. Oily wastewater mainly comes from the petrochemical industry, transportation industry, machinery manufacturing industry and catering industry, etc. It is a kind of wastewater with a wide range, large volume and serious hazards. The discharge of oily wastewater into the water body will cause a decrease in dissolved oxygen in the water body, resulting in stench and deterioration of water quality. Even aquatic organisms die due to lack of oxygen, and cause fish, shrimp, shellfish, etc. to change their taste and are not suitable for consumption. The oil spilled on the body surface of sea birds will lose their flight function, and in severe cases, the bir...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/24B01J20/20B01J20/28054C02F1/288C02F2101/30
Inventor 董淑英张卫兵秦树巧禹崇菲王竞侦樊志伟张方圆
Owner HENAN NORMAL UNIV
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