EFFECTIVE REMOVAL OF RHODAMINE B DYE FROM AQUEOUS SOLUTION BY ADSORPTION ON a-AG2WO4/SBA-15 NANOMATERIAL

Autor:	Geraldo Eduardo da Luz Junior, Francisco das Chagas Marques da Silva, Vinicius Patricio Santos Caldeira, Germano Pereira dos Santos, Anne Gabriella Dias Santos, Laécio S. Cavalcante, Lara Kelly Ribeiro da Silva
Rok vydání:	2021
Předmět:	Environmental Engineering Aqueous solution Materials science Langmuir adsorption model Management Monitoring Policy and Law Molecular sieve Pollution chemistry.chemical_compound symbols.namesake Adsorption Tungstate chemistry Desorption Zeta potential Rhodamine B symbols Nuclear chemistry
Zdroj:	Environmental Engineering and Management Journal. 20:1341-1351
ISSN:	1843-3707 1582-9596
Popis:	Silver tungstate (a-Ag2WO4), sieve molecular mesoporous (SBA-15), and a-Ag2WO4/SBA-15 x% (x is mass ratio of 5, 10, and 20% of a-Ag2WO4 to SBA-15) were synthetized by sonochemical, hydrothermal, and post-synthesis methods, respectively. The materials were characterized by powder X-ray diffractometry (XRD), field emission electron microscopy (SEM), N2 adsorption/desorption, X-ray photoelectron spectroscopy (XPS), and zeta potential. The characterizations verify that silver tungstate (a-Ag2WO4) and nanocomposite a-Ag2WO4/SBA-15 x% were obtained. The performance of a-Ag2WO4/SBA-15 x% in adsorption of RhB depended on percentage of a-Ag2WO4. The RhB adsorption behavior onto adsorbents was well fitted to pseudo-second order kinetics and Langmuir isotherm model. The removal efficiency of a-Ag2WO4/SBA-15 20% (1.050 g L-1) was 100% for RhB 50 ppm at 30 min. Moreover, 80% of RhB was recuperated from adsorbents at neutral pH.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b009c5a43fb108e6cd8caf24b96ab627 https://doi.org/10.30638/eemj.2021.124 Zobrazit plný text záznamu