A method for preparing porous conductive carbon using rice husk as raw material

Abstract

The invention belongs to the high-valued application field of agricultural solid residues, and particularly relates to a method for preparing porous conductive carbon on the basis of rice husks. The method uses the rice husks as raw materials, conductive carbon is prepared through the catalytic, hole forming and other characteristics of products generated after heating decomposition of zinc carbonate, and the prepared materials has the advantages of being porous, highly dispersed, good in electrical conductivity and the like. According to the technical scheme, the rice husks are smashed first, and desilicication rice husk powder is prepared after hydrofluoric acid desilicication is carried out; zinc carbonate is then added to the desilicication rice husk powder, and the porous conductive carbon is obtained through high-temperature calcination.

Description

technical field

[0001] The invention belongs to the high-value application field of agricultural solid waste resources, and in particular relates to a preparation method of a rice husk-based porous conductive carbon material. Background technique

[0002] Agricultural solid waste is a kind of natural material with abundant resources on the earth. Straw is a common type of agricultural solid waste. Chinese patent CN 102107864 B discloses a method for preparing biomass conductive carbon. The method uses biomass such as straw as raw materials, and under the action of a catalyst, adopts high-temperature carbonization to prepare a conductive carbon material. However, the conductive carbon material prepared by this method has a narrow pore size distribution, and its application range is limited.

[0003] Rice husk is a common solid waste and a valuable natural resource containing silicon. According to statistics, the annual output of rice husk in my country has reached more th...