Fabrication and properties of Ti/Zr composite nanofiltration membrane

Guizhi Zhu; Honglin Guo; Qian Jiang; Hong Qi

doi:10.11949/j.issn.0438-1157.20141645

Fabrication and properties of Ti/Zr composite nanofiltration membrane

Guizhi Zhu, Honglin Guo, Qian Jiang, Hong Qi

College of Chemical Engineering

Nanjing Tech University

Research output: Contribution to journal › Article › peer-review

Abstract

A stable Ti/Zr composite polymeric sol with Ti:Zr molar ratio of 1:1 was synthesized through the polymeric sol route. Disk α-Al₂O₃ supported mesoporous γ-Al₂O₃ membrane with an average pore size of 5-6 nm was used as support for nanofiltration membranes deposition. A defect-free Ti/Zr composite nanofiltration membrane superimposed on the support was fabricated via the dip-coating method followed by drying and calcination. The influence of calcination temperature on Ti/Zr powders was studied. The properties of Ti/Zr composite nanofiltration membrane were also investigated. Ti/Zr powders maintained amorphous state and microporous structure up to a calcination temperature of 500℃. The MWCO, mean pore size and pure water flux of Ti/Zr composite nanofiltration membrane calcined at 400℃ were 880, 1.49 nm and 4.3 L·m^-2·h^-1·MPa^-1, respectively. Under the condition of pH=6 and transmembrane pressure 0.8 MPa, the retention properties of Ti/Zr composite membrane towards 0.005 mol·L^-1 MgCl₂ and CaCl₂ solutions were 85% and 78%, respectively.

Original language	English
Pages (from-to)	1600-1606
Number of pages	7
Journal	Huagong Xuebao/CIESC Journal
Volume	66
Issue number	4
DOIs	https://doi.org/10.11949/j.issn.0438-1157.20141645
State	Published - 1 Apr 2015

Keywords

Ceramic nanofiltration membranes
Ions retention
Sol-gel method
Ti/Zr composite

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10.11949/j.issn.0438-1157.20141645

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title = "Fabrication and properties of Ti/Zr composite nanofiltration membrane",

abstract = "A stable Ti/Zr composite polymeric sol with Ti:Zr molar ratio of 1:1 was synthesized through the polymeric sol route. Disk α-Al2O3 supported mesoporous γ-Al2O3 membrane with an average pore size of 5-6 nm was used as support for nanofiltration membranes deposition. A defect-free Ti/Zr composite nanofiltration membrane superimposed on the support was fabricated via the dip-coating method followed by drying and calcination. The influence of calcination temperature on Ti/Zr powders was studied. The properties of Ti/Zr composite nanofiltration membrane were also investigated. Ti/Zr powders maintained amorphous state and microporous structure up to a calcination temperature of 500℃. The MWCO, mean pore size and pure water flux of Ti/Zr composite nanofiltration membrane calcined at 400℃ were 880, 1.49 nm and 4.3 L·m-2·h-1·MPa-1, respectively. Under the condition of pH=6 and transmembrane pressure 0.8 MPa, the retention properties of Ti/Zr composite membrane towards 0.005 mol·L-1 MgCl2 and CaCl2 solutions were 85% and 78%, respectively.",

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author = "Guizhi Zhu and Honglin Guo and Qian Jiang and Hong Qi",

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AU - Zhu, Guizhi

AU - Guo, Honglin

AU - Jiang, Qian

AU - Qi, Hong

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Y1 - 2015/4/1

N2 - A stable Ti/Zr composite polymeric sol with Ti:Zr molar ratio of 1:1 was synthesized through the polymeric sol route. Disk α-Al2O3 supported mesoporous γ-Al2O3 membrane with an average pore size of 5-6 nm was used as support for nanofiltration membranes deposition. A defect-free Ti/Zr composite nanofiltration membrane superimposed on the support was fabricated via the dip-coating method followed by drying and calcination. The influence of calcination temperature on Ti/Zr powders was studied. The properties of Ti/Zr composite nanofiltration membrane were also investigated. Ti/Zr powders maintained amorphous state and microporous structure up to a calcination temperature of 500℃. The MWCO, mean pore size and pure water flux of Ti/Zr composite nanofiltration membrane calcined at 400℃ were 880, 1.49 nm and 4.3 L·m-2·h-1·MPa-1, respectively. Under the condition of pH=6 and transmembrane pressure 0.8 MPa, the retention properties of Ti/Zr composite membrane towards 0.005 mol·L-1 MgCl2 and CaCl2 solutions were 85% and 78%, respectively.

AB - A stable Ti/Zr composite polymeric sol with Ti:Zr molar ratio of 1:1 was synthesized through the polymeric sol route. Disk α-Al2O3 supported mesoporous γ-Al2O3 membrane with an average pore size of 5-6 nm was used as support for nanofiltration membranes deposition. A defect-free Ti/Zr composite nanofiltration membrane superimposed on the support was fabricated via the dip-coating method followed by drying and calcination. The influence of calcination temperature on Ti/Zr powders was studied. The properties of Ti/Zr composite nanofiltration membrane were also investigated. Ti/Zr powders maintained amorphous state and microporous structure up to a calcination temperature of 500℃. The MWCO, mean pore size and pure water flux of Ti/Zr composite nanofiltration membrane calcined at 400℃ were 880, 1.49 nm and 4.3 L·m-2·h-1·MPa-1, respectively. Under the condition of pH=6 and transmembrane pressure 0.8 MPa, the retention properties of Ti/Zr composite membrane towards 0.005 mol·L-1 MgCl2 and CaCl2 solutions were 85% and 78%, respectively.

KW - Ceramic nanofiltration membranes

KW - Ions retention

KW - Sol-gel method

KW - Ti/Zr composite

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Fabrication and properties of Ti/Zr composite nanofiltration membrane

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