Application of carboxylated carbon nanotube catalyst carrier

A technology of catalyst carrier and carboxylated carbon, which is applied in the direction of catalyst carrier, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve problems such as application difficulties, achieve high degree of carboxylation, improve Inertness and hydrophobicity, the effect of abundant oxygen-containing groups on the surface
CN103191787BActive Publication Date: 2015-07-01SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2015-07-01

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Abstract

The invention discloses a carboxylated carbon nanotube catalyst carrier as well as a preparation method and application thereof. The preparation method of the carboxylated carbon nanotube catalyst carrier comprises the following steps of: putting carbon nanotubes in the mixed liquid of concentrated HNO3 and concentrated H2SO4 in a volume ratio of (1: 3)-(3: 2) and performing constant-temperature reflux treatment in the range of 80-95 DEG C for 100-120 minutes, and then washing and drying, thereby obtaining the carboxylic carbon nanotube catalyst carrier. The catalyst carrier is used for preparing Pt / CNT catalyst; the obtained Pt / CNT catalyst is used as an air cathode material for preparing a single-cavity membrane-free air cathode microbial fuel cell. The rich oxygen-containing groups are introduced on the surface of the catalyst carrier prepared by the method, so that the oxygen reduction effect of the catalyst is improved; and the Pt / CNT catalyst prepared from the catalyst carrier succeeds in starting MFC (Micro Function Circuit) so that the start period of MFC is shortened, the internal resistance of MFC can be reduced and the output voltage of MFC also can be greatly increased.
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Description

technical field

[0001] The invention belongs to the field of biological energy materials, and in particular relates to a carboxylated carbon nanotube catalyst carrier and a preparation method and application thereof. Background technique

[0002] Microbial fuel cells (MFCs) are electrochemical devices that use microorganisms as biocatalysts to degrade organic matter to generate electricity. The unique power generation method of MFCs makes it a new idea to solve the energy crisis and treat wastewater at the same time. However, the research on MFCs is still in the research stage of the laboratory, and there are still many challenges to be applied to practical engineering. Among them, the low power generation capacity is one of the main obstacles restricting the commercialization of this technology.

[0003] There are many factors that lead to the low power generation capacity of MFCs, among which the inefficient and slow oxygen reduction thermodynamics and kinetics of the cat...

Claims

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