Indoor formaldehyde removal over CMK-3.
The removal of formaldehyde at low concentrations is important in indoor air pollution research. In this study, mesoporous carbon with a large specific surface area was used for the adsorption of low-concentration indoor formaldehyde. A mesoporous carbon material, CMK-3, was synthesized using the nano-replication method. SBA-15 was used as a mesoporous template. The surface of CMK-3 was activated using a 2N H2SO4 solution and NH3 gas to prepare CMK-3-H2SO4 and CMK-3-NH3, respectively. The activated samples were characterized by N2 adsorption-desorption, X-ray diffraction, and X-ray photoelectron spectroscopy. The formaldehyde adsorption performance of the mesoporous carbons was in the order of CMK-3-NH3 > CMK-3-H2SO4 > CMK-3. The difference in the adsorption performance was explained by oxygen and nitrogen functional groups formed during the activation process and by the specific surface area and pore structure of mesoporous carbon.
Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, South Korea. catalica@uos.ac.kr.
Hyung Bum
HB
An
Mi Jin
MJ
Yu
Ji Man
JM
Kim
Mingshi
M
Jin
Jong-Ki
JK
Jeon
Sung Hoon
SH
Park
Seung-Soo
SS
Kim
Young-Kwon
YK
Park