TY - JOUR
T1 - Preparation of AC/Cu-BTC composite and its adsorption mechanisms
AU - Liu, Zhuannian
AU - Fan, Aping
AU - Ho, Chun Hisng
N1 - Funding Information:
This work was supported by the National Natural Science Foundation (No. 51278418) of the PR China.
Publisher Copyright:
© 2020 American Society of Civil Engineers.
PY - 2020/4/1
Y1 - 2020/4/1
N2 - The copper-based metal organic framework Cu-BTC (Copper Benzene-1,3,5-tricarboxylate) was synthesized by the solvothermal method, and AC/Cu-BTC composites were prepared by introducing different proportions of activated carbon (AC) into the reaction process by in situ synthesis. Various measures, including the use of an X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR), scanning electron microscope (SEM), and N2 adsorption apparatus were applied to characterize the structure, morphology, and surface area of Cu-BTC and AC/Cu-BTC. The adsorption properties and mechanism of methylene blue (MB) and methylene orange (MO) onto Cu-BTC and AC/Cu-BTC were studied. The results showed that Cu-BTC and AC/Cu-BTC have the same octahedral structure. The adsorption amount of MB onto AC/Cu-BTC composites was higher than that of Cu-BTC. The adsorption of MB onto Cu-BTC and AC/Cu-BTC was much higher than MO. The adsorption isotherms of MB and MO onto Cu-BTC and AC/Cu-BTC could be described by the Langmuir model, while the adsorption kinetics of the two adsorbents followed the pseudo second-order model. The negative values ΔH and ΔG illustrate the spontaneity and exothermicity of the process. The adsorption amount of MB on AC/Cu-BTC decreased from 49.39 to 32.45 mg/g after 3 cycles of reuse.
AB - The copper-based metal organic framework Cu-BTC (Copper Benzene-1,3,5-tricarboxylate) was synthesized by the solvothermal method, and AC/Cu-BTC composites were prepared by introducing different proportions of activated carbon (AC) into the reaction process by in situ synthesis. Various measures, including the use of an X-ray diffractometer (XRD), Fourier transform infrared spectrometer (FT-IR), scanning electron microscope (SEM), and N2 adsorption apparatus were applied to characterize the structure, morphology, and surface area of Cu-BTC and AC/Cu-BTC. The adsorption properties and mechanism of methylene blue (MB) and methylene orange (MO) onto Cu-BTC and AC/Cu-BTC were studied. The results showed that Cu-BTC and AC/Cu-BTC have the same octahedral structure. The adsorption amount of MB onto AC/Cu-BTC composites was higher than that of Cu-BTC. The adsorption of MB onto Cu-BTC and AC/Cu-BTC was much higher than MO. The adsorption isotherms of MB and MO onto Cu-BTC and AC/Cu-BTC could be described by the Langmuir model, while the adsorption kinetics of the two adsorbents followed the pseudo second-order model. The negative values ΔH and ΔG illustrate the spontaneity and exothermicity of the process. The adsorption amount of MB on AC/Cu-BTC decreased from 49.39 to 32.45 mg/g after 3 cycles of reuse.
KW - AC/Cu-BTC
KW - Adsorption
KW - Cu-BTC
KW - Methylene blue (MB)
KW - Methylene orange (MO)
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U2 - 10.1061/(ASCE)EE.1943-7870.0001678
DO - 10.1061/(ASCE)EE.1943-7870.0001678
M3 - Article
AN - SCOPUS:85079637032
SN - 0733-9372
VL - 146
JO - Journal of Environmental Engineering, ASCE
JF - Journal of Environmental Engineering, ASCE
IS - 4
M1 - 04020018
ER -