Enhanced proton conductivity of Nafion nanohybrid membrane incorporated with phosphonic acid functionalized graphene oxide at elevated temperature and low humidity

2016 ◽  
Vol 518 ◽  
pp. 243-253 ◽  
Author(s):  
Bei Zhang ◽  
Ying Cao ◽  
Shengtao Jiang ◽  
Zhen Li ◽  
Guangwei He ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Elevated Temperature ◽  
Proton Conductivity ◽  
Phosphonic Acid ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Low Humidity

scholarly journals Nitrile functionalized graphene oxide for highly selective sulfonated poly(arylene ether nitrile)-based proton-conducting membranes

RSC Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 2971-2978 ◽  
Author(s):  
Mengna Feng ◽  
Tao Cheng ◽  
Xu Huang ◽  
Yumin Huang ◽  
Xiaobo Liu
Keyword(s):  
Graphene Oxide ◽  
Proton Conductivity ◽  
Interfacial Interaction ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Proton Conducting ◽  
Proton Conducting Membrane ◽  
Arylene Ether ◽  
Conducting Membranes ◽  
Sulfonated Poly

The incorporation of 4-(3-aminophenoxy)phthalonitrile grafted graphene oxide into SPEN proton-conducting membrane was proved to be an effective way to improve the interfacial interaction and proton conductivity performance.

Synthesis of “(aminomethyl)phosphonic acid-functionalized graphene oxide”, and comparison of its adsorption properties for thorium(IV) ion, with plain graphene oxide

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Amir Doram ◽  
Mohammad Outokesh ◽  
Seyed Javad Ahmadi ◽  
Fazel Zahakifar
Keyword(s):  
Graphene Oxide ◽  
Phosphonic Acid ◽  
Chemical Structure ◽  
Ph Effect ◽  
Functionalized Graphene ◽  
Adsorption Selectivity ◽  
Functionalized Graphene Oxide ◽  
Adsorption Capacities ◽  
New Material ◽  
Aminomethyl Phosphonic Acid

Abstract The current study presents a simple and scalable method for the synthesis of (aminomethyl)phosphonic acid-functionalized graphene oxide (AMPA-GO) adsorbent. The chemical structure of the new material was disclosed by different instrumental analyses (e.g. FTIR, Raman, XPS, AFM, TEM, XRD, CHN, and UV), and two pertinent mechanisms namely nucleophilic substitution and condensation were suggested for its formation. Adsorption experiments revealed that both AMPA-GO and plain GO have a high affinity toward Th(IV) ions, but the AMPA-GO is superior in terms of adsorption capacity, rate of adsorption, selectivity, pH effect, etc. Indeed, the AMPA-GO can uptake Th(IV) nearly instantaneously, and coexisting Na+ ions have no effect on its adsorption. Thanks to Langmuir isotherm, the maximum adsorption capacities of the GO and AMPA-GO were obtained 151.06 and 178.67 mg g−1, respectively. Interestingly, GO and AMPA-GO both showed a higher preference for thorium over uranium so that the average “K d (Th)/K d (U)” for them was 52 and 44, respectively. This data suggests that chromatographic separation of thorium and uranium is feasible by these adsorbents.

Polymer Functionalized Graphene Oxide: A Versatile Nanoplatform for Drug/Gene Delivery

2015 ◽  
Vol 19 (18) ◽  
pp. 1828-1837 ◽  
Author(s):  
George V. Theodosopoulos ◽  
Panayiotis Bilalis ◽  
Georgios Sakellariou
Keyword(s):  
Graphene Oxide ◽  
Gene Delivery ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide
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