In Situ Synthesis and Characterization of ZnO/Chitosan Nanocomposite as an Adsorbent for Removal of Congo Red from Aqueous Solution

Table 1

BET surface areas, pore volume, and pore size in the ZnO nanoparticles, chitosan and ZnO/chitosan nanocomposite.

Sample	SBET (m^2/g)^a	Pore volume (cm^3/g)^b	Average pore size (nm)^c
ZnO nanoparticles	9.7852	0.031169	11.3386
Chitosan	1.7461	0.010181	21.6846
ZnO/chitosan nanocomposite	2.2436	0.007779	12.2102

^aBET surface area calculated from the linear part of the BET plot. ^bBJH adsorption cumulative volume of pores between 17.0 Å and 3000.0 Å diameter. ^cAdsorption average pore diameter (4 V/A by BET).