Enhanced removal of Eriochrome Black T in wastewater by zirconium-based MOF/graphene oxide

Autor:	Xin Peng, Yuexin Lv, Yong Meng, Jiaqi Bu, Lu Yuan, Yanling Ren
Rok vydání:	2020
Předmět:	Zirconium Graphene Organic Chemistry Oxide chemistry.chemical_element General Chemistry Catalysis law.invention Eriochrome Black T chemistry.chemical_compound chemistry Wastewater law Tetrachloride Nuclear chemistry
Zdroj:	Canadian Journal of Chemistry. 98:90-97
ISSN:	1480-3291 0008-4042
DOI:	10.1139/cjc-2019-0368
Popis:	The zirconium-based MOF/graphene oxide (UiO-66-NH2/GO) composites were prepared by ultrasonic dispersing different amounts of graphene oxide (GO) in a well-dissolved zirconium tetrachloride/H2BDC-NH2 mixture, obtaining 2 wt% (UiO-66-NH2/GO-1), 5 wt% (UiO-66-NH2/GO-2), and 10 wt% (UiO-66-NH2/GO-3) GO composites. The products were characterized by XRD, FTIR, SEM, BET, Raman, UV, XPS, and Zeta potential. Adsorption experiments on simulated Eriochrome Black T (EBT) printing and dyeing wastewater were carried out using UiO-66-NH2/GO, and the optimal conditions for adsorption were obtained by exploring the effects of initial EBT concentration, time, pH, and salt ionic strength. Adsorption isotherms, kinetics, mechanism, and regeneration were also researched. The adsorption behavior was consistent with the Langmuir isotherm and fully compliant with pseudo secondary dynamics model. The adsorption capacity of UiO-66-NH2/GO-2 was found to be the highest of the three products, which was 263.158 mg/g. Therefore, the UiO-66-NH2/GO-2 composite was considered to be an excellent adsorbent for the adsorption of EBT from organic dye wastewater.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f208996244b65b7a55e50110368f222 https://doi.org/10.1139/cjc-2019-0368 Zobrazit plný text záznamu Plný text ve formátu PDF