Low temperature sintering preparation of high-permeability TiO2/Ti composite membrane via facile coating method

Lin, Yuqing; Zou, Dong; Chen, Xianfu; Qiu, Minghui; Kameyama, Hideo; Fan, Yiqun

doi:10.1016/j.apsusc.2015.04.227

Cited by 36 publications

(15 citation statements)

References 41 publications

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“…metal-ceramic membranes was 12 000 ± 1300 L/(m 2 h bar). Similar work has been reported by Lin et al, 30 where the titanium dioxide (TiO 2 ) membrane layer with a pore size of 380 nm was directly sprayed on the Ti support with a pore size of 13 μm. In that case, a water permeability of 1150 L/(m 2 h bar) was measured.…”

Section: Membranes Architecturesupporting

confidence: 67%

Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performance

Zeuner

Ovtar

Persson

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Enzyme immobilization in porous membranes often improves enzyme performance. This work reports the preparation and characterization of robust and scalable asymmetric metal‐ceramic microfiltration membrane. The surface of the porous metal‐ceramic membrane was treated by impregnation with a ceramic oxide for enzyme adsorption and corrosion protection. Finally, enzyme immobilization in the support was investigated. RESULTS The bilayer membrane was successfully fabricated by combining a ceramic microfiltration layer with a metal support by tape casting, lamination and co‐sintering. A pore size in the ceramic microfiltration layer of 0.4 μm resulted in high water permeability (12 000 L/(m2 h bar)). Two different surface treatments were compared: heat treatment and yttrium(III) oxide (Y2O3) impregnation. Corrosion stability tests under enzyme‐relevant conditions gave no detectable chemical or structural changes. Alcohol dehydrogenase (EC 1.1.1.1) was immobilized in the membrane by physical adsorption and by two covalent immobilization methods. Covalent immobilization significantly improved enzyme loading, activity, and recyclability. Membrane reuse by heat treatment removed fouling, but decreased immobilization performance. CONCLUSION The improved microstructure obtained by Y2O3‐impregnation had a significant effect on enzyme loading yield and activity. This indicates the potential of this surface modification method and of these metal‐supported ceramic membranes in enzyme immobilization. Covalent immobilization was superior. © 2019 Society of Chemical Industry

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Section: Membranes Architecturesupporting

confidence: 67%

Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performance

Zeuner

Ovtar

Persson

et al. 2019

J of Chemical Tech & Biotech

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“…These studies pave the way for the design and fabrication of highperformance ceramic membrane materials with controllable surface charges. Furthermore, Lin et al [27,28] reported the effect of AgNPs doping on the thermal treatment of ceramic membranes at high temperatures. They fabricated TiO2/Ti composite microfiltration (MF) and UF membranes using AgNPs to alleviate the sintering stress and thermal expansion mismatch between the metal support and TiO2 layer, efficiently preventing membrane cracks in the sintering process.…”

Section: Introductionmentioning

confidence: 99%

Facile co-sintering process to fabricate sustainable antifouling silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes for protein separation

Zou

Chen

Drioli

et al. 2020

Journal of Membrane Science

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Protein separation in medical care applications using tight ceramic ultrafiltration (UF) membranes with multilayer asymmetric structures is hindered by challenges in their fabrication and fouling phenomenon. In this study, a facile co-sintering method for fabrication of silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes was comprehensively investigated. The introduction of AgNPs into the membrane layer not only controlled the membrane surface charge properties, but also alleviated the sintering stress in the co-sintering process, ensuring a complete membrane layer owing to the higher ductility. The AgNPs obtained from silver nitrate were introduced before the formation of boehmite nucleation, providing a uniform distribution of AgNPs within boehmite owing to the electric double layer. The final UF membranes prepared by the co-sintering process exhibited a molecular weight cut-off of 9000 Da and permeability of 62 Lm -2 h -1 bar -1 . Furthermore, the isoelectric point of the membrane surface could be controlled by the AgNPs (from 9.0 to 2.7 unit?), providing sustainable antifouling properties for protein purification owing to the electrostatic repulsion force. The proposed facile co-sintering process for fabrication of antifouling ceramic UF membranes with the assistance of AgNPs could decrease the sintering time and energy consumption, and thus is promising for industrial protein purification applications.

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“…Recently, porous Ti material was proposed as a promising support for ceramic membranes based on many advantages, such as high specific surface area, low apparent specific gravity, and high penetration performance [14][15][16]. Lin et al [17] prepared high-permeability TiO 2 membrane on porous Ti support via the facile coating method, the prepared TiO 2 /Ti composite microfiltration (MF) membranes showed the most frequent pore size of 380 nm, and a high pure water permeability of 1150 L m −2 h −1 bar −1 . Mao et al [18] fabricated piezoelectric lead-zirconate-titanate (PZT)/Ti composite membranes by dry pressing PZT powder onto the porous Ti supports, followed by thermal processing.…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Oxygen Concentration on the Properties of TiO2/Ti Composite Membranes Prepared by In Situ Oxidation

Zhang

et al. 2020

Processes

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TiO2 membranes were prepared on porous Ti supports through the in situ oxidation method. The effects of oxygen concentration, oxidation temperature, and oxidation time on the thickness, pore size, and microstructure of the prepared TiO2 membrane were investigated. The results showed that with increasing oxygen concentration, oxidation temperature, and oxidation time, the thickness of the prepared TiO2 membrane gradually increased, and the pore diameter gradually decreased. The optimum preparation conditions were—oxygen concentration was N2:O2 = 2:1, oxidation temperature was 800 ℃, and oxidation time was 60 min. The prepared TiO2/Ti composite membranes had a flat and smooth surface, uniform thickness, and only a rutile TiO2 characteristic peak formed on the surface of the membrane. The prepared TiO2/Ti composite membrane had a narrow pore size distribution, and the average pore size was about 0.312 μm. In addition, the prepared TiO2/Ti composite membranes showed an excellent stability.

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Low temperature sintering preparation of high-permeability TiO2/Ti composite membrane via facile coating method

Cited by 36 publications

References 41 publications

Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performance

Surface treatments and functionalization of metal‐ceramic membranes for improved enzyme immobilization performance

Facile co-sintering process to fabricate sustainable antifouling silver nanoparticles (AgNPs)-enhanced tight ceramic ultrafiltration membranes for protein separation

Study on the Effect of Oxygen Concentration on the Properties of TiO2/Ti Composite Membranes Prepared by In Situ Oxidation

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