银粉吸附乙基纤维素的机理

STUDY ON THE ADSORPTION MECHANISM OF ETHYL CELLULOSE ON SILVER POWDER

The results from applying XPS and FT IR techniques to the ethyl cellulose (EC) before and after adsorbed by silver powder show that a bridge bond is formed between the 5 sp 3 empty hybrid orbit of silver and lone electron pair on oxygen in EC, which increases the O1 s binding energy and weakens the C-O bonds. As the results, the C-O bonds in EC are broken easily and C-H pieces are observed at first when the sample is heated. With the increase of temperature, the adsorption bond between oxygen and silver breaks and the C-O pieces are detected. This process is different from that of pure ethyl cellulose.