Abstract:

The preparation of carbon/pottery composite from wood charcoal and clay was made with physical method and the effect of temperature and holding time on the adsorption capability of carbon/pottery composite was discussed in this paper. In addition, microstructure and pore distribution of carbon/pottery composite were characterized by SEM and BET and the idea of in situ activation was proposed.The results show the pore between wood charcoal and pottery developed during heating treatment while the clay did not block the pore structure of wood charcoal. On the other hand, the adsorption capability of lumpish shape was higher than pulverous shape. Furthermore, the activated reaction of carbon/pottery composite could be defined as in situ activation.Therefore, under optimized experimental condition,the adsorption values of methylene blue and iodine of carbon/pottery composite were 127.5 and 543.6 mg ·g^-1 respectively.

Key words: carbon/pottery composite, pore distribution, in situ activation, activated carbon