Aqueous dye adsorption on ordered mesoporous carbons.
Ordered mesoporous carbons (OMCs) with varying pore size, and microporous carbon, CFY, were synthesized using ordered mesoporous silica SBA-15 and NaY zeolite as hard templates, respectively. N(2) adsorption tests show that the synthesized OMCs possess abundant mesopores and centralized mesopore distribution. Methylene blue (MB) and neutral red (NR) were used as probe molecules to investigate their adsorption behaviors on OMCs and CFY. As evidenced by adsorption tests, the volume of mesopores of which the pore size is larger than 3.5 nm is a crucial factor for the adsorption capacity and adsorption rate of MB on OMCs. However, the most probable pore diameter of OMCs was found to be vital to the adsorption capacity and adsorption rate of NR. Theoretical studies show that the adsorption kinetics of MB and NR on OMCs can be well depicted by using pseudo-second-order kinetic model.
Yuan
Xun
X
School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China.
Zhuo
Shu-Ping
SP
Xing
Wei
W
Cui
Hong-You
HY
Dai
Xiao-Dong
XD
Liu
Xin-Mei
XM
Yan
Zi-Feng
ZF