Dispersion of Titanium(IV) Oxide Nanoparticles in Mixed Matrix Membrane Using Octaisobutyl Polyhedral Oligomeric Silsesquioxane for Enhanced CO2/CH4 Separation Performance

Tan, Grace Ying En; Oh, Pei Ching; Lau, Kok Keong; Low, Siew Chun

doi:10.1007/s10118-019-2246-8

Cited by 15 publications

(7 citation statements)

References 27 publications

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“…Based on SEM imaging, there seem to be no interfacial voids. Thus, the agglomerates could be deduced to rigidify the polymer chain surrounding it, pointing towards the decrease in gas permeation [14]. Despite the reduction in permeability, the selectivity of both MMM-3 and MMM-5 had an increment of approximately 71% and 9% with respect to pristine PPOdm membrane.…”

Section: Gas Permeation Testmentioning

confidence: 98%

Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation

Yap

Chin

2021

E3S Web Conf.

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Magnetophoretic dispersion of magnetic fillers has been proven to improve gas separation performances of mixed matrix membrane (MMM). However, the magnetic field induced is usually in a horizontal or vertical direction during membrane casting. Limited study has been conducted on the effects of rotational magnetic field direction towards dispersion of particles. Thus, this work focuses on the rearrangement of paramagnetic iron oxide-titanium dioxide (αFe2O3-TiO2) nanocomposite in poly (2,6-dimethyl-1,4-phenylene oxide) (PPOdm) membrane via rotational magnetic field to investigate the dispersion of filler and effects towards its overall gas separation performance. The paramagnetic fillers were incorporated into polymer via dry phase inversion method at different weight loading. MMM with 3 wt% loading shows the best performance in terms of particle dispersion and gas separation performance. It shows the greatest relative particles count and least agglomerates via OLYMPUS™ Stream software with image taken by optical microscope. Relative to pristine membrane, it displays a permeability and selectivity increment of 312% and 71%. MMM with 3 wt% loading was refabricated in the presence of rotational magnetic field to enhance the dispersion of paramagnetic fillers. Results display an increment of selectivity by 8% and CO2 permeability by 46% relative to unmagnetised MMM of 3 wt% loading.

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Section: Gas Permeation Testmentioning

confidence: 98%

Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation

Yap

Chin

2021

E3S Web Conf.

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“…[193] Recently, modified PSf was fabricated by incorporating titanium(IV) oxide (TiO 2 ) into the polymer with octaisobutyl polyhedral oligomeric silsesquioxane (POSS) as a dispersing agent. [194] They focused on increasing the gas separation of PSf membranes by reducing the TiO 2 particle aggregation in the polymer matrix. Excellent dispersion and stabilization of TiO 2 nanoparticles in the PSf were observed using 5 % POSS.…”

Section: R E V I E W T H E C H E M I C a L R E C O R Dmentioning

confidence: 99%

Micro and Nanoporous Membrane Platforms for Carbon Neutrality: Membrane Gas Separation Prospects

Hussain,

Gul,

Raza

et al. 2024

The Chemical Record

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Recently, carbon neutrality has been promoted as a potentially practical solution to global CO2 emissions and increasing energy‐consumption challenges. Many attempts have been made to remove CO2 from the environment to address climate change and rising sea levels owing to anthropogenic CO2 emissions. Herein, membrane technology is proposed as a suitable solution for carbon neutrality. This review aims to comprehensively evaluate the currently available scientific research on membranes for carbon capture, focusing on innovative microporous material membranes used for CO2 separation and considering their material, chemical, and physical characteristics and permeability factors. Membranes from such materials comprise metal‐organic frameworks, zeolites, silica, porous organic frameworks, and microporous polymers. The critical obstacles related to membrane design, growth, and CO2 capture and usage processes are summarized to establish novel membranes and strategies and accelerate their scaleup.

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“…To ensure homogeneous dispersion of fillers in the binary solvent, the mixture was stirred and sonicated for 30 min. Subsequently, 3.3325 g (27 wt %) of PSf pellets was added batchwise to improve the interfacial interaction of inorganic fillers within the polymer matrix with continuous stirring at 200 rpm and 50 C [7]. The solution was continuously stirred to remove trapped microbubbles for 24 h followed by sonication for 4 h. Then, a casting knife with a gap setting of 200 mm was used to cast the resulting dope solution on a leveled glass plate.…”

Section: Preparation Of Tio 2 -Oposs/psf MMMmentioning

confidence: 99%

A comparative study to evaluate the role of caged hybrid frameworks in the precise dispersion of titanium (IV) oxide for the development of gas separation membranes

Tan¹,

Oh²,

Lau³

et al. 2019

Comptes Rendus. Chimie

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In designing mixed-matrix membranes (MMMs), inorganic fillers such as titanium (IV) oxide (TiO 2 ) nanoparticles are commonly added because of their excellent intrinsic properties and high affinity toward CO 2 . However, the addition of TiO 2 nanoparticles causes formation of agglomerates because of their high surface energy and van der Waals forces. In this study, MMMs comprising caged hybrid framework, i.e., octaisobutyl polyhedral oligomeric silsesquioxane (OPOSS) incorporated with TiO 2 nanoparticles were developed by phase inversion technique. The effectiveness of OPOSS as a dispersant was determined by using qualitative and quantitative methods. Based on the findings, OPOSS successfully enhanced the dispersion of TiO 2 nanoparticles as it reduced the surface energy of TiO 2 nanoparticles. The optimum amount of TiO 2 -OPOSS in the tetrahydrofuran/dimethylacetamide casting solution was at 4 wt % TiO 2 and 2 wt % OPOSS based on qualitative and quantitative analyses. At 4/2-T/OPOSS MMM, the elemental mapping showed uniform dispersion of TiO 2 nanoparticles without formation of large agglomerates. In addition, the free-space length and d-metric value were the lowest for 4/2-T/OPOSS, which implied that this membrane has the highest degree of particles' dispersion and distribution. Hence, the optimum CO 2 /CH 4 gas selectivity performance was achieved by 4/2-T/OPOSS.

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Dispersion of Titanium(IV) Oxide Nanoparticles in Mixed Matrix Membrane Using Octaisobutyl Polyhedral Oligomeric Silsesquioxane for Enhanced CO2/CH4 Separation Performance

Cited by 15 publications

References 27 publications

Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation

Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation

Micro and Nanoporous Membrane Platforms for Carbon Neutrality: Membrane Gas Separation Prospects

A comparative study to evaluate the role of caged hybrid frameworks in the precise dispersion of titanium (IV) oxide for the development of gas separation membranes

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Dispersion of Titanium(IV) Oxide Nanoparticles in Mixed Matrix Membrane Using Octaisobutyl Polyhedral Oligomeric Silsesquioxane for Enhanced CO2/CH4 Separation Performance

Cited by 15 publications

References 27 publications

Development of αFe2O3-TiO2/PPOdm Mixed Matrix Membrane for CO2/CH4 Separation

Development of αFe2O3-TiO2/PPOdm Mixed Matrix Membrane for CO2/CH4 Separation

Micro and Nanoporous Membrane Platforms for Carbon Neutrality: Membrane Gas Separation Prospects

A comparative study to evaluate the role of caged hybrid frameworks in the precise dispersion of titanium (IV) oxide for the development of gas separation membranes

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Product

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Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation

Development of αFe₂O₃-TiO₂/PPO_dm Mixed Matrix Membrane for CO₂/CH₄ Separation