Rational design of sulfonated poly(ether ether ketone) grafted graphene oxide-based composites for proton exchange membranes with enhanced performance

Feng, Mengna; Huang, Yumin; Yue, Cheng; Liu, Jingchun; Liu, Xiaobo

doi:10.1016/j.polymer.2018.04.037

Cited by 48 publications

(39 citation statements)

References 35 publications

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“…Many inorganic nanofillers including hygroscopic oxides (e.g., SiO 2 , TiO 2 , ZrO 2 ), graphene oxide , titanate nanotubes , and carbon nanotubes were utilized to improve the mechanical property, while they endow polymer matrix with some new properties due to the synergistic effect. Jiang's group prepared several surface‐functionalized silica submicrospheres (including sulfonated, carboxylated, and quaternary aminated silica) and embedded into CS.…”

Section: Introductionmentioning

confidence: 99%

Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells

Tsen

Chuang

Jang

et al. 2019

Polymer Engineering & Sci

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Natural polyelectrolyte chitosan (CS) has been considered to be a promising proton-exchange membrane material for direct methanol fuel cells due to its low cost and excellent methanol barrier ability. To further improve the ionic conductivity and mechanical property of CS, calcium-carbonate solvent-free nanofluids (CaCO 3 -SF) with unique flow behavior were prepared by an ion-exchange method, and then used a novel nanofiller to modify CS to fabricate composite membranes. The surface-grafted organic long chains on the surface of CaCO 3 nanoparticles could promote the homogeneous dispersion of CaCO 3 in the CS matrix, and thus improve the interfacial bonding and facilitate the load transfer from the matrix to stiff CaCO 3 . When the content of CaCO 3 -SF was 6 wt%, the tensile strength and fracture elongation of the composite membrane were 28.25 MPa and 17.17%, respectively, which increased by 25% and 36% when compared with those of pure membrane. Moreover, the SO 3 H groups in the structure of organic long chains could form new proton transport sites, and thus enhance the proton conductivity of the membranes. Consequently, when compared with pure CS membrane (0.0131 S cm −1 ), incorporation of 6 wt% CaCO 3 -SF (0.0250 S cm −1 ) exhibited about onefold increase of proton conductivity. POLYM. ENG. SCI., 59:2128-2135, 2019

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Section: Introductionmentioning

confidence: 99%

Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells

Tsen

Chuang

Jang

et al. 2019

Polymer Engineering & Sci

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“…On the other hand, GO itself is a promising material for various applications. As a proton conductor GO is applied in humidity sensors [10,14], in supercapacitors [15][16], as well as in a fieldeffect transistor [10,17], and nano composite membranes [18][19][20][21]. There is a possibility to integrate GO in graphene electronic devices [22].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Conductive Properties of Graphene Oxide Films

2019

International Journal of Advanced Research in Chemical Science

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The behavior of interlayer water was studied in detail for graphite oxide [24-26]. By using neutron scattering, it has been shown [24] that, in the interlayer space, water may exist at high humidity in two forms: translational motion capable form and translational motion incapable one. The interlayer distance in graphite oxide was found [25] to abruptly change in the vicinity of freezing point. Talyzin et al. [25] have also established the presence of two types of water in the interlayer space of graphite oxide. The same conclusion was also reached by Zhu et al. [26] who investigated the thermal expansion of graphene layers and explained the negative thermal effect by reversible diffusion of free Abstract: Current-voltage characteristics of graphene oxide (GO) films were explored in water vapor as a function of water content in the film. The films can contain free and bound water. A decrease in current with time at a constant voltage is associated with the decrease in water content. Reduced GO (rGO) films exhibited proton and electron conductivity. For the proton conductivity E a = 0.9 eV, for the electron conductivity induced by thermolysis and chemical exposure E a = 1.15 eV. The rGO films is an example of mixed electron-proton conductivity when material conductivity can be regulated by external conditions. The field effect in a graphene oxide transistor for different conductivity types has been discovered and investigated. The possibility of accumulation and storage of electric charge in Nafion and GO films was demonstrated for the first time. The storage is governed by humidity of ambient environment. Charge accumulation occurs directly in Nafion or GO films.

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“…After several decades of exploration, the nucleophilic substitution mechanism has developed to be the most mature strategy to synthesize a series of targeted PEN. Typically, a kind of poly(arylene ether nitrile)-containing pendant sulfonic acid group was named as sulfonated poly(arylene ether nitrile) (SPEN), and it has high water adsorption and ionization ability, as well as being considered to be a promising adsorbent candidate for the disposal of dyes wastewater [24]. It has been realized that the higher sulfonation degree is beneficial to ionization and adsorption of SPEN, while it may also result in excessive swelling or dissolution in aqueous solution [25].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

et al. 2018

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In this work, a highly selective and efficient polymer adsorbent inspired by a water-soluble sulfonated poly(arylene ether nitrile) (SPEN) was successfully synthesized. Due to the distinct structure of functional carboxyl, sulfonic acid and rigid benzene rings, a facile aluminium (III) ions crosslinking method was employed to fabricate the SPEN-based adsorbents (SPEN-Al). Among the three adsorbents, SPEN-Al-2 exhibited superior adsorption capacities with uniform morphology. Subsequently, the SPEN-Al-2 was selected as the adsorbent for three cationic dyes (rhodamine B (Rh B), neutral red (NR), methylene blue (MB)) and three anionic dyes (orange G (OG), methyl orange (MO), acid fuchsin (AF)), respectively, demonstrating that the adsorbent possessing excellent selectivity toward cationic dyes. Moreover, the dye’s adsorption selectivity of SPEN-Al-2 was further certificated in a binary cationic-anionic dyes mixtures (MB/OG and MB/MO) system. Taking MB as a dye model, a series of factors (contact time, concentration, temperature and pH) and adsorption models were systematically investigated in dye adsorption experiments. Results indicated that the adsorption was endothermic and the maximum adsorption capacity of SPEN-Al-2 could reach up to 877.5 mg/g; pseudo-second-model and Langmuir model were fitted to the adsorption kinetics and equilibrium isotherm, respectively, manifesting that SPEN-Al adsorbent was promising in the dyes removing field.

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Rational design of sulfonated poly(ether ether ketone) grafted graphene oxide-based composites for proton exchange membranes with enhanced performance

Cited by 48 publications

References 35 publications

Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells

Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells

A Review on the Conductive Properties of Graphene Oxide Films

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

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Rational design of sulfonated poly(ether ether ketone) grafted graphene oxide-based composites for proton exchange membranes with enhanced performance

Cited by 48 publications

References 35 publications

Chitosan/CaCO3solvent‐free nanofluid composite membranes for direct methanol fuel cells

Chitosan/CaCO3solvent‐free nanofluid composite membranes for direct methanol fuel cells

A Review on the Conductive Properties of Graphene Oxide Films

Preparation of Sulfonated Poly(arylene ether nitrile)-Based Adsorbent as a Highly Selective and Efficient Adsorbent for Cationic Dyes

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Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells

Chitosan/CaCO₃solvent‐free nanofluid composite membranes for direct methanol fuel cells