TY - JOUR
T1 - Covalent-organic polymer-derived carbons
T2 - An effective adsorbent to remove sulfonamide antibiotics from water
AU - Ahmed, Imteaz
AU - Lee, Hye Jin
AU - Jhung, Sung Hwa
N1 - Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/6/1
Y1 - 2022/6/1
N2 - A new mesoporous N-doped carbonaceous material was prepared for the first time from a microporous triazine polymer (MCTP) (a covalent-organic polymer) by high-temperature pyrolysis after loading Zn(OH)2. The material, denoted ZCDC, was successfully applied for the adsorptive removal of sulfonamides like sulfamethoxazole (SMX) and sulfachlorpyridazine (SCP) from aqueous solutions. ZCDC showed better performance compared with the carbon prepared from MCTP only (without loading Zn(OH)2) due to the increased mesoporosity. The kinetic studies indicated that a practical equilibrium on ZCDC adsorption can be achieved within 1 h and 4 h for SMX and SCP, respectively. The adsorption isotherms can be fitted with the Langmuir adsorption model and one ZCDC, ZCDC(10), had a maximum adsorption capacity (Q0) of 514 and 430 mg/g for SMX and SCP (at pH 7.0), respectively. Moreover, the ZCDC(10) ranked the third position (with a Q0 value of 514 mg/g), after N-doped beta zeolite-derived carbon and MOF-545, in SMX adsorption. Based on the adsorption and surface charge under wide pH ranges, the adsorption could be attributed to the favorable pore structure, π–π, and H-bonding interactions. The ZCDC(10), showing the excellent performance in sulfonamides adsorption, was easily regenerated by washing with acetone for up to five adsorption-desorption cycles.
AB - A new mesoporous N-doped carbonaceous material was prepared for the first time from a microporous triazine polymer (MCTP) (a covalent-organic polymer) by high-temperature pyrolysis after loading Zn(OH)2. The material, denoted ZCDC, was successfully applied for the adsorptive removal of sulfonamides like sulfamethoxazole (SMX) and sulfachlorpyridazine (SCP) from aqueous solutions. ZCDC showed better performance compared with the carbon prepared from MCTP only (without loading Zn(OH)2) due to the increased mesoporosity. The kinetic studies indicated that a practical equilibrium on ZCDC adsorption can be achieved within 1 h and 4 h for SMX and SCP, respectively. The adsorption isotherms can be fitted with the Langmuir adsorption model and one ZCDC, ZCDC(10), had a maximum adsorption capacity (Q0) of 514 and 430 mg/g for SMX and SCP (at pH 7.0), respectively. Moreover, the ZCDC(10) ranked the third position (with a Q0 value of 514 mg/g), after N-doped beta zeolite-derived carbon and MOF-545, in SMX adsorption. Based on the adsorption and surface charge under wide pH ranges, the adsorption could be attributed to the favorable pore structure, π–π, and H-bonding interactions. The ZCDC(10), showing the excellent performance in sulfonamides adsorption, was easily regenerated by washing with acetone for up to five adsorption-desorption cycles.
KW - Adsorption
KW - COP-derived carbons
KW - Sulfachlorpyridazine
KW - Sulfamethoxazole
KW - Sulfonamide antibiotics
UR - http://www.scopus.com/inward/record.url?scp=85125423675&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2022.135386
DO - 10.1016/j.cej.2022.135386
M3 - Article
AN - SCOPUS:85125423675
SN - 1385-8947
VL - 437
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 135386
ER -