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2D-3D magnetic NiFe layered double hydroxide decorated diatomite as multi-function material for anionic, cationic dyes, arsenate, and arsenite adsorption
Abstract Three-dimensional diatomite was decorated with a novel magnetic two-dimensional layered double hydroxides nanosheet (DE@NiFe LDH) by the hydrothermal synthesis method. The adsorption of anionic, cationic dyes, As(V), and As(III) was achieved by the synergistic effect of diatomite and NiFe LDH. The newly synthesized materials were characterized by different methods: XRD; FT-IR; zeta potential measurements; N2 adsorption to determine surface area and pore structure; SEM and XPS. The effects of pH, concentrations, contact time and temperature on the adsorption properties were also studied to clarify the mechanism. At adsorption equilibrium (1 h), the adsorption of methyl orange, and methylene blue reached 96.8% and 84.4%, respectively. Maximum sorption of MO, MB, As(III), and As(V) was 134.32, 76.79, 335.69, and 80.58 mg g−1 respectively, exhibiting superior adsorption performance. The thermodynamic parameters of the adsorption process were calculated and indicated that the adsorption process is exothermic. This work provides an idea for the synthesis of low-cost, ideal, and magnetic multifunctional nano adsorbent for anionic, cationic dyes, As(V), and As(III), offering potential applications for practical wastewater purification.
Graphical abstract Display Omitted
Highlights The three-dimensional natural diatomite was decorated with a two-dimensional layered double hydroxides nanosheet to produce magnetic DE@NiFe LDH by a one-step hydrothermal method. The DE@NiFe LDH exhibits superior adsorption performance for anionic, cationic dyes, As(III), and As(V). The adsorption mechanism was mainly due to ion exchange and electrostatic adsorption.
2D-3D magnetic NiFe layered double hydroxide decorated diatomite as multi-function material for anionic, cationic dyes, arsenate, and arsenite adsorption
Abstract Three-dimensional diatomite was decorated with a novel magnetic two-dimensional layered double hydroxides nanosheet (DE@NiFe LDH) by the hydrothermal synthesis method. The adsorption of anionic, cationic dyes, As(V), and As(III) was achieved by the synergistic effect of diatomite and NiFe LDH. The newly synthesized materials were characterized by different methods: XRD; FT-IR; zeta potential measurements; N2 adsorption to determine surface area and pore structure; SEM and XPS. The effects of pH, concentrations, contact time and temperature on the adsorption properties were also studied to clarify the mechanism. At adsorption equilibrium (1 h), the adsorption of methyl orange, and methylene blue reached 96.8% and 84.4%, respectively. Maximum sorption of MO, MB, As(III), and As(V) was 134.32, 76.79, 335.69, and 80.58 mg g−1 respectively, exhibiting superior adsorption performance. The thermodynamic parameters of the adsorption process were calculated and indicated that the adsorption process is exothermic. This work provides an idea for the synthesis of low-cost, ideal, and magnetic multifunctional nano adsorbent for anionic, cationic dyes, As(V), and As(III), offering potential applications for practical wastewater purification.
Graphical abstract Display Omitted
Highlights The three-dimensional natural diatomite was decorated with a two-dimensional layered double hydroxides nanosheet to produce magnetic DE@NiFe LDH by a one-step hydrothermal method. The DE@NiFe LDH exhibits superior adsorption performance for anionic, cationic dyes, As(III), and As(V). The adsorption mechanism was mainly due to ion exchange and electrostatic adsorption.
2D-3D magnetic NiFe layered double hydroxide decorated diatomite as multi-function material for anionic, cationic dyes, arsenate, and arsenite adsorption
Dai, Xingjian (Autor:in) / Yi, Wang (Autor:in) / Yin, Changqing (Autor:in) / Li, Kailin (Autor:in) / Feng, Li (Autor:in) / Zhou, Quan (Autor:in) / Yi, Zhiyu (Autor:in) / Zhang, Xuebin (Autor:in) / Wang, Yule (Autor:in) / Yu, Yaolun (Autor:in)
Applied Clay Science ; 229
05.08.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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