Microstructure of attapulgite-goethite modified woodceramics from wheat straw

Attapulgite, goethite and wheat straw were used as raw materials, and little amount of epoxy was added as adhesive. The models were sintered under proper temperature and atmosphere, then biomass carbonization, attapulgite thermal activation and goethite deoxidation were achieved simultaneously, so as to acquire attapulgite-goethite modified woodceramics from wheat straw with the property of high porosity and strong magnetism. The effects of mass ratios of raw materials and sintering temperature on the phase and microstructure of the composites were analyzed by XRD and SEM. The results show that the attapulgite-goethite modified woodceramics from wheat straw is a kind of amorphous and porous carbon material, mass ratio of raw materials has almost no influence on phases under the same temperature. With the increase of sintering temperature, characteristic diffraction peaks of attapulgite disappeare gradually, new phase appears in attapulgite-goethite modified woodceramics from wheat straw.