TY - JOUR
T1 - Adsorptive removal of aromatic hydrocarbons from water over metal azolate framework-6-derived carbons
AU - Bhadra, Biswa Nath
AU - Song, Ji Yoon
AU - Lee, Su Kyung
AU - Hwang, Young Kyu
AU - Jhung, Sung Hwa
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/2/15
Y1 - 2018/2/15
N2 - Metal azolate framework-6 (MAF-6) was pyrolyzed at 1000 °C to yield MOF-derived carbons (MCs). The obtained MCs were used to eliminate aromatic hydrocarbons, including polyaromatic hydrocarbons (PAHs; e.g., naphthalene (NAP), anthracene (ATC), and pyrene (PRN)) and benzene (BZ) from water via adsorption. The adsorption results over the MCs were compared with that of pristine MAF-6 and commercial activated carbon (AC). MC obtained after 24 h (MC-24) exhibited a remarkable adsorption efficiency compared to that of the other MCs (obtained after different durations), MAF-6, and AC. For example, MC-24 led to adsorptions of NAP around 17 and 2.5 times those of pristine MAF-6 and AC, respectively. Or, the maximum adsorption capacities (Q0) of MAF-6, AC and MC-24 for NAP were 14, 104 and 237 mg/g, respectively. Moreover, Q0 values of MC-24 for ATC and PRN were also very high of 284 and 307 mg/g, respectively. Based on the properties of PAHs and the hydrophobicity of MC-24, hydrophobic interaction was suggested as the main mechanism for the adsorption of PAHs and BZ. In addition, MC-24 can be recycled by washing with acetone with little loss in performance. Therefore, MC-24 is recommended as a competitive adsorbent for aromatic hydrocarbon removal from water.
AB - Metal azolate framework-6 (MAF-6) was pyrolyzed at 1000 °C to yield MOF-derived carbons (MCs). The obtained MCs were used to eliminate aromatic hydrocarbons, including polyaromatic hydrocarbons (PAHs; e.g., naphthalene (NAP), anthracene (ATC), and pyrene (PRN)) and benzene (BZ) from water via adsorption. The adsorption results over the MCs were compared with that of pristine MAF-6 and commercial activated carbon (AC). MC obtained after 24 h (MC-24) exhibited a remarkable adsorption efficiency compared to that of the other MCs (obtained after different durations), MAF-6, and AC. For example, MC-24 led to adsorptions of NAP around 17 and 2.5 times those of pristine MAF-6 and AC, respectively. Or, the maximum adsorption capacities (Q0) of MAF-6, AC and MC-24 for NAP were 14, 104 and 237 mg/g, respectively. Moreover, Q0 values of MC-24 for ATC and PRN were also very high of 284 and 307 mg/g, respectively. Based on the properties of PAHs and the hydrophobicity of MC-24, hydrophobic interaction was suggested as the main mechanism for the adsorption of PAHs and BZ. In addition, MC-24 can be recycled by washing with acetone with little loss in performance. Therefore, MC-24 is recommended as a competitive adsorbent for aromatic hydrocarbon removal from water.
KW - Adsorption
KW - Aromatic hydrocarbons
KW - Hydrophobicity
KW - MAF-6
KW - MOF-derived carbons
UR - http://www.scopus.com/inward/record.url?scp=85036618859&partnerID=8YFLogxK
U2 - 10.1016/j.jhazmat.2017.11.057
DO - 10.1016/j.jhazmat.2017.11.057
M3 - Article
C2 - 30216966
AN - SCOPUS:85036618859
SN - 0304-3894
VL - 344
SP - 1069
EP - 1077
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
ER -