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Janus nitrogen-doped carbon nanofiber film as well as preparation method and application thereof

A technology of carbon nanofibers and nanofibers, applied in the field of Janus nitrogen-doped carbon nanofiber films and their preparation and application, can solve the problems of unfavorable Janus film low-cost preparation, environmental pollution, etc.

Active Publication Date: 2020-09-01
SHANDONG JIANZHU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, through research by the inventors of the present invention, it has been found that the current methods for preparing Janus thin films all include multi-step complex and cumbersome operations, and all use a large amount of poisonous or highly corrosive chemicals, which is not conducive to Janus thin films. Low-cost preparation, but also easy to cause pollution to the environment

Method used

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  • Janus nitrogen-doped carbon nanofiber film as well as preparation method and application thereof
  • Janus nitrogen-doped carbon nanofiber film as well as preparation method and application thereof
  • Janus nitrogen-doped carbon nanofiber film as well as preparation method and application thereof

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preparation example Construction

[0022] In view of the shortcomings of the existing Janus film preparation methods such as cumbersome preparation process and the use of toxic or highly corrosive chemicals, the present invention proposes a Janus nitrogen-doped carbon nanofiber film and its preparation method and application.

[0023] A typical embodiment of the present invention provides a method for preparing Janus nitrogen-doped carbon nanofiber film. In an inert atmosphere, the mixed gas of ammonia and inert gas is passed into the carbon nanofiber film, and heated to 850 ~ Treat at 950° C. for 3 to 15 minutes to obtain a nitrogen-doped carbon nanofiber film; remove the nitrogen-doped layer on one side of the nitrogen-doped carbon nanofiber film to obtain a Janus nitrogen-doped carbon nanofiber film.

[0024] It was found through experiments that the carbon nanofiber film treated with ammonia gas can change from hydrophobicity to hydrophilicity. The ammonia treatment time affects the extent to which the carb...

Embodiment 1

[0040] (1) Preparation of carbon nanofiber film:

[0041] First, place the aluminum sheet in 0.1M copper nitrate aqueous solution, take it out and dry it, and then place it on the bottom of the ceramic boat. Then, place the ceramic boat in the quartz tube of the horizontal tube-type resistance furnace, first pass argon into the quartz tube, and then pass acetylene (0.06 liters per minute) and argon into the quartz tube when the furnace temperature rises to 440°C The mixed gas of gas (0.006 L / min) is about 60h. After the reaction is over, a carbon nanofiber film will grow on the surface of the aluminum sheet. Finally, peel off the carbon nanofiber film from the surface of the aluminum sheet to obtain an independent carbon nanofiber film. The electron microscope picture of the carbon nanofiber film is as follows: figure 1 shown in a and b.

[0042] (2) Preparation of nitrogen-doped carbon nanofiber film:

[0043] Place the carbon nanofiber film on the bottom of the ceramic b...

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Abstract

The invention discloses a Janus nitrogen-doped carbon nanofiber film and a preparation method and application thereof. The preparation method comprises the steps that in an inert atmosphere, mixed gasof ammonia gas and inert gas is introduced into a carbon nanofiber film, the carbon nanofiber film is heated to 850-950 DEG C and treated for 3-15 min to obtain a nitrogen-doped carbon nanofiber film; and the nitrogen-doped layer on one side of the nitrogen-doped carbon nanofiber film is removed to obtain the Janus nitrogen-doped carbon nanofiber film. One side of the Janus nitrogen-doped carbonnanofiber film is hydrophobic, the other side of the Janus nitrogen-doped carbon nanofiber film is hydrophilic, the Janus nitrogen-doped carbon nanofiber film can semi-float on the water surface, andoil on the water surface and dye dissolved in the water can be absorbed at the same time.

Description

technical field [0001] The invention relates to a Janus nitrogen-doped carbon nanofiber film, a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Janus films, that is, films with different wettability on the front and back sides, have broad application prospects in the fields of mist collection, microfluidics, multifunctional adsorbents, and oil / water separation. Therefore, exploring the low-cost, Controllable preparation methods have been an active research area in recent years. As in "Janus polymer / carbon nanotube hybridmembranes for oil / water separation", ACS Appl.Mater.Interfaces 6, 16204-16209 (2014) ("Janus polymer / carbon n...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/40B01D17/022C02F101/30
CPCB01D17/0202B01J20/0259B01J20/20B01J20/28038B01J2220/4806C02F1/283C02F1/40C02F2101/308
Inventor 赵相龙陈婷王惠临庞岩涛陈艳平李鲁艳时术华
Owner SHANDONG JIANZHU UNIV
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