Fabrication of a super hydrophobic polyvinylidene fluoride–hexadecyltrimethoxysilane hybrid membrane for carbon dioxide absorption in a membrane contactor

Pang, Honglei; Chen, Zezhi; Gong, Huijuan; Du, Mengfan

doi:10.1016/j.memsci.2019.117536

Cited by 36 publications

(25 citation statements)

References 38 publications

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“…2.2 Fabrication of hollow fiber membrane and membrane contactor module [15] [19] In this study, the PVDF-SiO2-HDTMS hollow fiber membranes were fabricated via dry-jet wet-spinning phase inversion method. The PVDF and SiO2 were dried in a vacuum oven at 70±2°C for 24h, the dehydrated PVDF polymer particles were added into NMP, ammonia water and SiO2 mixture gradually and stirred by a magnetic stirrer at 60°C until the particles were completely dissolved, in this process, the solution gradually turned to brown.…”

Section: Methodsmentioning

confidence: 99%

“…The surface functional groups of the membranes were determined by the attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR) on a NEXUS 870, NICOLET, USA [15]. The ATR-FTIR spectra were collected over a scanning range of 500-4000 cm -1 with 16 scans over 4.0 cm −1 .…”

Section: Characterizationmentioning

confidence: 99%

“…For each measurement, 3 μL of pure water or 1M DEA was pumped out from a syringe. The liquid drop remained on the membrane outer surface for 3 min before recording, and the result was adopted as the average value of ten measurements for each sample [15].…”

Section: Characterizationmentioning

confidence: 99%

“…The wettability resistance of the prepared membrane was assessed by measurements of the critical water entry pressure (CEPw). The measurement method of the nitrogen (N2) gas permeation and CEPw were referred to literature [15][16][17].…”

Section: Characterizationmentioning

confidence: 99%

“…CO2 absorption experiments process and the experimental setup could refer to our previous study [15]. The corresponding parameters for the experiments are shown in Table 3.…”

Section: Co2 Contact Absorption Experimentsmentioning

confidence: 99%

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Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Pang

Qiu

Wei-peng³

2021

Preprint

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To obtain a long-term stable operation of the hollow fiber membrane for using in membrane contact absorption of carbon dioxide (CO2), hybrid polyvinylidene fluoride-silica-hexadecyltrimethoxysilane (PVDF-SiO2-HDTMS) membrane were fabricated via the non-solvent induced phase-inversion method. The surface properties, performance characteristics and long-term stable operation performance of the prepared membranes were compared and analyzed. The results show the outer surface of the prepared membranes exhibited superhydrophobicity because of the formation of rough nano-scale microstructures and the low surface free energy. Due to the addition of inorganic nanoparticles, the mechanical strength of PVDF-SiO2-HDTMS membranes were improved. The long-term stable operation experiments were carried out with the inlet gas (CO2/N2 = 19/81, v/v) at a flow rate of 20 mL/min and the absorbent liquid (1 mol/L DEA) at a flow rate of 50 mL/min. And the result showed that the mass transfer flux of PVDF-SiO2-HDTMS membrane decreased from the initial value of 2.39×10-3 mol/m2s to 2.31×10-3 mol/m2s, which was a decrease of 3% after 20 days. The main benefit is the addition of inorganic nanoparticles, which have strong chemical resistance and high hydrophobicity, thereby preventing structural damage and pore wetting of the membrane. PVDF-SiO2-HDTMS membrane exhibits excellent long-term stable operation performance of CO2.

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Section: Methodsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

“…CO2 absorption experiments process and the experimental setup could refer to our previous study [15]. The corresponding parameters for the experiments are shown in Table 3.…”

Section: Co2 Contact Absorption Experimentsmentioning

confidence: 99%

See 3 more Smart Citations

Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Pang

Qiu

Wei-peng³

2021

Preprint

Self Cite

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Creating membrane‐air‐liquid interface through a rough hierarchy structure for membrane gas absorption to remove CO ₂

Chang

Baharuddin

et al. 2021

Intl J of Energy Research

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Membrane gas absorption (MGA) is widely accepted for separating CO 2 from flue gas due to its superior advantages in overcoming the operational and economic issues encountered by conventional CO 2 removal technologies. However, the efficiency may reduce when the membrane starts to wet after the prolonged operation due to the invasion of liquid absorbent into the membrane pores. Therefore, the synthesis of the superhydrophobic membrane is of great significance to enhance the wetting resistance of the membrane. It can also ensure continuous process optimization. In this work, two PVDF membranes synthesized from polymers of different molecular weights (HMW/g-PVDF and LMW/g-PVDF) had first used to evaluate the wetting resistance. As shown by the characterization tests, the HMW/g-PVDF membrane demonstrated the most critical wetting issue because the WCA was lower at 92 , and the WCA had significantly reduced to 47 after the swelling evaluation. Since HMW/g-PVDF has the lowest wetting resistance, it had been used to synthesis superhydrophobic membranes by using templated substrate (non-woven fabric). The produced membranes were immersed in water or an ethanol coagulation bath and successfully printed hierarchical structures on the membrane surface. The change in the surface structure produced a higher surface roughness, reaching 4.4 μm, and exhibited a low contact angle hysteresis of 11.8 . The patterned membrane with excellent wetting resistance also showed a higher CO 2 absorption flux at 7.00 Â 10 À2 mol/m 2 s. This means that the hierarchical structure existing on the membrane surface played a significant role in overcoming the shortcomings of membrane wetting in MGA.

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Polymer Nanocomposite Membranes for Water Remediation

Upreti

Patro

2022

Materials Horizons: From Nature to Nanomaterials

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Fabrication of a super hydrophobic polyvinylidene fluoride–hexadecyltrimethoxysilane hybrid membrane for carbon dioxide absorption in a membrane contactor

Cited by 36 publications

References 38 publications

Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Creating membrane‐air‐liquid interface through a rough hierarchy structure for membrane gas absorption to remove CO ₂

Polymer Nanocomposite Membranes for Water Remediation

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Fabrication of a super hydrophobic polyvinylidene fluoride–hexadecyltrimethoxysilane hybrid membrane for carbon dioxide absorption in a membrane contactor

Cited by 36 publications

References 38 publications

Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Long-Term Stability of PVDF-SiO2-HDTMS Composite Hollow Fiber Membrane For Carbon Dioxide Absorption in Gas–Liquid Contacting Process

Creating membrane‐air‐liquid interface through a rough hierarchy structure for membrane gas absorption to remove CO 2

Polymer Nanocomposite Membranes for Water Remediation

Contact Info

Product

Resources

About

Creating membrane‐air‐liquid interface through a rough hierarchy structure for membrane gas absorption to remove CO ₂