In:
RSC Advances, Royal Society of Chemistry (RSC), Vol. 11, No. 58 ( 2021), p. 36626-36635
Abstract:
A series of Zr-sulfonic-based metal–organic frameworks have been synthesized by the solvothermal method, namely VNU-17 and VNU-23. Particularly, VNU-17 and VNU-23 adopt the sulfonate group (SO 3 − ) moieties densely packed within their structure, which can efficiently uptake MB + from wastewater. The maximum adsorption capacity for MB + onto VNU-23 is up to 1992 mg g −1 at pH = 7, which is more than five times that of activated carbon and possesses the highest value among all the reported MOF materials. In addition, VNU-23 retains the adsorption uptake of MB for at least five cycles. The adsorption isotherms and kinetic studies reveal that MB + dye adsorption onto VNU-23 fits a Langmuir isotherm and the pseudo second order kinetic model. Furthermore, the ultra-high adsorption capacity of VNU-23 for MB dye can be accounted for by the suitable pore/channel size together with electrostatic attraction and π–π interactions. These results indicate that VNU-23 can be utilized as a promising candidate for removing MB + from an aqueous medium.
Type of Medium:
Online Resource
ISSN:
2046-2069
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2021
detail.hit.zdb_id:
2623224-8