Influence of amine-functionalized iron titanate as filler for improving conductivity and electrochemical properties of SPEEK nanocomposite membranes

Salarizadeh, Parisa; Javanbakht, Mehran; Pourmahdian, Saeed; Beydaghi, Hossein

doi:10.1016/j.cej.2016.04.086

Cited by 65 publications

(34 citation statements)

References 67 publications

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“…shifts in the peaks positions can be attributed to the formation of hydrogen bonding between NPs and matrix . Meanwhile, the intensity of the characteristic peaks slightly decreased due to formation of hydrogen bonds between CA and functional groups of NPs …”

Section: Resultsmentioning

confidence: 99%

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Etemadi

Yegani

Babaeipour

2017

J of Applied Polymer Sci

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In this study, nanocomposite membranes based on cellulose acetate (CA) and nanodiamond (ND) were prepared by applying phase inversion methods. In order to achieve efficient dispersion and more hydrophilic NDs, they were functionalized via heat treatment (ND-COOH). The prepared nanocomposite membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), contact angle, porosity measurement, tensile strength, and abrasion resistance techniques. Furthermore, the governing fouling mechanisms were determined by using classic models as well as combined fouling models. Moreover, the effect of precoagulation with polyaluminum chloride (PAC) on the humic acid (HA) filtration was investigated. The obtained results showed that in the presence of ND-COOH, the abrasion resistance of nanocomposite CA membrane was three times higher than that of pristine CA membrane. Besides, the nanocomposite membranes with 0.5 wt % of raw and functionalized ND exhibited excellent hydrophilicity and PWF. The analysis of fouling mechanism based on Hermia's model revealed that the cake formation is prevailing mechanism for CA and CA/ND (0.5 wt %) membranes while for CA/ND-COOH (0.5 wt %) membrane, experimental results are fitted by combined cake filtration-complete blocking (CFCB) model. It confirms that pretreatment with PAC can significantly mitigate fouling and improve HA removal.

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Section: Resultsmentioning

confidence: 99%

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Etemadi

Yegani

Babaeipour

2017

J of Applied Polymer Sci

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“…26 In our previous work, incorporation of modied Fe 2 TiO 5 nanoparticles within SPEEK matrix improved proton conductivity and mechanical properties of membrane. 30 Our research was continued with investigation of different nanoparticles effect and their surface modication on the properties of nanocomposite membranes. P25 TiO 2 nanoparticles have high hydroxyl groups in their surface which facilitate its surface modications.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the performance of SPEEK polymer electrolyte membranes using functionalized TiO₂ nanoparticles with proton hopping sites

2017

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“…Then, the samples were dehydrated in a vacuum oven and dry weight obtained ( W d ). WU was calculated as follows:

WU (() %) = \frac{W_{w} - W_{d}}{W_{d}} \times 100 .

…”

Section: Methodsmentioning

confidence: 99%

“…The proton conductivity of 75.3 mS cm ‐1 and maximum power density of 61.5 mW cm ‐2 were achieved with an addition of 1.5 wt% nanoparticles in a polymeric matrix of SPEEK and (SPVDF‐co‐HFP) . In previous studies, we introduced new nanocomposite membranes based on hygroscopic nanoparticles for PEMFCs such as strontium cerate, Fe 2 TiO 5, BaZrO 3, and WO 3 nanoparticles …”

Section: Introductionmentioning

confidence: 99%

Enhanced properties of SPEEK with incorporating of PFSA and barium strontium titanate nanoparticles for application in DMFCs

et al. 2019

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Summary Novel blend nanocomposite proton‐exchange membranes were prepared using sulfonated poly (ether ether ketone) (SPEEK), perfluorosulfonic acid (PFSA), and Ba0.9Sr0.1TiO3 (BST) doped‐perovskite nanoparticles. The membranes were evaluated by attenuated total reflection, X‐ray diffraction spectroscopy, water uptake, proton conductivity, methanol permeability, and direct methanol fuel cell test. The effect of two additives, PFSA and BST, were investigated. Results indicated that both proton conductivity and methanol barrier of the blend nanocomposite membranes improved compared with pristine SPEEK and the as‐prepared blend membranes. The methanol permeability and the proton conductivity of the blend membrane containing 6 wt% BST obtained 3.56 × 10−7 cm2 s−1 (at 25 °C) and 0.110 S cm−1 (at 80 °C), respectively. The power density value for the optimum blend nanocomposite membrane (15 wt% PFSA and 6 wt% BST) (54.89 mW cm‐2) was higher than that of pristine SPEEK (31.34 mW cm‐2) and SPF15 blend membrane (36.12 mW cm‐2).

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Influence of amine-functionalized iron titanate as filler for improving conductivity and electrochemical properties of SPEEK nanocomposite membranes

Cited by 65 publications

References 67 publications

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Enhancing the performance of SPEEK polymer electrolyte membranes using functionalized TiO₂ nanoparticles with proton hopping sites

Enhanced properties of SPEEK with incorporating of PFSA and barium strontium titanate nanoparticles for application in DMFCs

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Influence of amine-functionalized iron titanate as filler for improving conductivity and electrochemical properties of SPEEK nanocomposite membranes

Cited by 65 publications

References 67 publications

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Performance evaluation and antifouling analyses of cellulose acetate/nanodiamond nanocomposite membranes in water treatment

Enhancing the performance of SPEEK polymer electrolyte membranes using functionalized TiO2 nanoparticles with proton hopping sites

Enhanced properties of SPEEK with incorporating of PFSA and barium strontium titanate nanoparticles for application in DMFCs

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Enhancing the performance of SPEEK polymer electrolyte membranes using functionalized TiO₂ nanoparticles with proton hopping sites