Water treatment with CoZnAl-LDH and its mixed metal oxide

CoZnAl-layered double hydroxide (LDH) was synthesized by homogeneous co-precipitation. CoZnAl-Mixed Metal Oxide (MMO) was prepared by calcining the LDH. The samples' structure and morphology were studied by analytical techniques including X-ray diffraction, N2 adsorption-desorption isotherm, sc...

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Autores principales:	Mina Sharifi-Bonab, Soheil Aber, Dariush Salari, Fatemeh Khodam
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	adsorption layered double hydroxide mixed metal oxide photocatalysis Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/ec1d809be5b04a79aaa20aaf4cc62cbc
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spelling	oai:doaj.org-article:ec1d809be5b04a79aaa20aaf4cc62cbc2021-11-05T21:17:18ZWater treatment with CoZnAl-LDH and its mixed metal oxide1751-231X10.2166/wpt.2021.079https://doaj.org/article/ec1d809be5b04a79aaa20aaf4cc62cbc2021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1386https://doaj.org/toc/1751-231XCoZnAl-layered double hydroxide (LDH) was synthesized by homogeneous co-precipitation. CoZnAl-Mixed Metal Oxide (MMO) was prepared by calcining the LDH. The samples' structure and morphology were studied by analytical techniques including X-ray diffraction, N2 adsorption-desorption isotherm, scanning electron microscopy and UV–visible spectroscopy. Acid orange 7 (AO7) adsorption by as-prepared samples was studied. CoZnAl-MMO showed 526.32 mg/g adsorption capacity, higher than that of CoZnAl-LDH, 243.9 mg/g. Kinetic studies confirmed the pseudo-second-order and pseudo-first-order AO7 adsorption kinetics of the LDH and MMO, respectively. AO7 adsorption onto both LDH and MMO fitted the Langmuir isotherm model well. Band gap calculation confirmed the ability of this nano-MMO to operate in the visible light region. It displayed synergetic adsorption-photocatalytic performance under visible light and the removal efficiency was about 97%. HIGHLIGHTS The CoZnAl-LDH with high surface area was synthesized.; The LDH adsorbed acid orange 7 from aqueous solution effectively.; The CoZnAl-MMO was prepared via calcination of the CoZnAl-LDH.; The MMO showed photocatalytic activity in visible light and high adsorption capacity towards AO7.;Mina Sharifi-BonabSoheil AberDariush SalariFatemeh KhodamIWA Publishingarticleadsorptionlayered double hydroxidemixed metal oxidephotocatalysisEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1386-1396 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	adsorption layered double hydroxide mixed metal oxide photocatalysis Environmental technology. Sanitary engineering TD1-1066
spellingShingle	adsorption layered double hydroxide mixed metal oxide photocatalysis Environmental technology. Sanitary engineering TD1-1066 Mina Sharifi-Bonab Soheil Aber Dariush Salari Fatemeh Khodam Water treatment with CoZnAl-LDH and its mixed metal oxide
description	CoZnAl-layered double hydroxide (LDH) was synthesized by homogeneous co-precipitation. CoZnAl-Mixed Metal Oxide (MMO) was prepared by calcining the LDH. The samples' structure and morphology were studied by analytical techniques including X-ray diffraction, N2 adsorption-desorption isotherm, scanning electron microscopy and UV–visible spectroscopy. Acid orange 7 (AO7) adsorption by as-prepared samples was studied. CoZnAl-MMO showed 526.32 mg/g adsorption capacity, higher than that of CoZnAl-LDH, 243.9 mg/g. Kinetic studies confirmed the pseudo-second-order and pseudo-first-order AO7 adsorption kinetics of the LDH and MMO, respectively. AO7 adsorption onto both LDH and MMO fitted the Langmuir isotherm model well. Band gap calculation confirmed the ability of this nano-MMO to operate in the visible light region. It displayed synergetic adsorption-photocatalytic performance under visible light and the removal efficiency was about 97%. HIGHLIGHTS The CoZnAl-LDH with high surface area was synthesized.; The LDH adsorbed acid orange 7 from aqueous solution effectively.; The CoZnAl-MMO was prepared via calcination of the CoZnAl-LDH.; The MMO showed photocatalytic activity in visible light and high adsorption capacity towards AO7.;
format	article
author	Mina Sharifi-Bonab Soheil Aber Dariush Salari Fatemeh Khodam
author_facet	Mina Sharifi-Bonab Soheil Aber Dariush Salari Fatemeh Khodam
author_sort	Mina Sharifi-Bonab
title	Water treatment with CoZnAl-LDH and its mixed metal oxide
title_short	Water treatment with CoZnAl-LDH and its mixed metal oxide
title_full	Water treatment with CoZnAl-LDH and its mixed metal oxide
title_fullStr	Water treatment with CoZnAl-LDH and its mixed metal oxide
title_full_unstemmed	Water treatment with CoZnAl-LDH and its mixed metal oxide
title_sort	water treatment with coznal-ldh and its mixed metal oxide
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/ec1d809be5b04a79aaa20aaf4cc62cbc
work_keys_str_mv	AT minasharifibonab watertreatmentwithcoznalldhanditsmixedmetaloxide AT soheilaber watertreatmentwithcoznalldhanditsmixedmetaloxide AT dariushsalari watertreatmentwithcoznalldhanditsmixedmetaloxide AT fatemehkhodam watertreatmentwithcoznalldhanditsmixedmetaloxide
_version_	1718444014140653568

Water treatment with CoZnAl-LDH and its mixed metal oxide

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