02253nas a2200253   4500008004100000022001400041245011800055210006900173260000900242300001200251490000800263520137900271653002701650653002301677653001401700653002401714653002401738100001901762700002101781700002701802700002401829700001401853856013201867       2019                        eng d  a0013-468600aStudies on nano composites of SPEEK/ethylene glycol/cellulose nanocrystals as promising proton exchange membranes0 aStudies on nano composites of SPEEKethylene glycolcellulose nano  cJAN   a260-2720 v2933 a<p>The present work deals with fabrication and characterisations of nano-composite membranes composed of sulfonated poly (ether ether ketone) (SPEEK) cross-linked and reinforced with ethylene glycol (EG) and cellulose nanocrystals (CNCs) respectively. The thin films of cross-linked composite membranes were prepared by solvent casting method and further analysed for physicochemical and electrochemical properties to execute their applicability as promising proton exchange membrane (PEM) in fuel cells. The process of cross-linking helps to improve the strength and dimensional stability of bare SPEEK membranes without compromising with conductivity. However, presence of CNCs further improves the strength and provides an effective pathway for the conduction of protons in membranes by interacting through their surface hydroxyl and sulfonic acid groups with ionic moieties of polymer matrix. All prepared composite membranes showed good oxidative and thermal stability along with good proton conductivity. The cross-linked SPEEK membranes with 4 wt% loading of CNCs possess an appreciable proton conductivity of 0.186 S/cm at 95 degrees C and 95% RH which is comparable to Nafion 117. From the view point of above studies, the prepared nano-composite can be described as promising proton exchange membrane for fuel cells. (c) 2018 Elsevier Ltd. All rights reserved.</p>10aCellulose nanocrystals10aCross-linked SPEEK10afuel cell10aoxidative stability10aproton conductivity1 aBano, Saleheen1 aNegi, Yuvraj, S.1 aIllathvalappil, Rajith1 aKurungot, Sreekumar1 aRamya, K.  uhttps://library.ncl.res.in/content/studies-nano-composites-speekethylene-glycolcellulose-nanocrystals-promising-proton-exchange02076nas a2200277   4500008004100000022001400041245012100055210006900176260000800245300001100253490000800264520114900272653001001421653001401431653002701445653001601472653003001488100002901518700001801547700002101565700002701586700002001613700002401633700001701657856012401674       2022                        eng d  a0144-861700aTailored synthesis of ultra-stable Au@Pd nanoflowers with enhanced catalytic properties using cellulose nanocrystals0 aTailored synthesis of ultrastable AuPd nanoflowers with enhanced  cSEP  a1197230 v2923 a<p>
	A green strategy for the synthesis of bimetallic core-shell Au@Pd nanoflowers (NFs) employing banana pseudostem-derived TEMPO-oxidized cellulose nanocrystals (TCNC) as both capping and shape-directing agent via seed-mediated method is presented. Flower-like nanostructures of Au@Pd bound to TEMPO-oxidized cellulose nanocrystals (TCNC-Au@Pd) were decorated on amino-functionalized graphene (NH2-RGO) without losing their unique structure, allowing them to be deployed as an efficient, reusable and a green alternative heterogeneous catalyst. The decisive role of TCNC in the structural metamorphosis of nanoparticle morphology were inferred from the structural and morphology analyses. According to our study, the presence of -OH rich TCNC appears to play a pivotal role in the structured evolution of intricate nanostructure morphology. The feasibility of the bio-supported catalyst has been investigated in two concurrently prevalent model catalytic reactions, namely the oxygen reduction reaction (ORR) and the reduction of 4-nitrophenol, the best model reactions in fuel cell and industrial catalytic applications, respectively.</p>
10aAu@Pd10acatalysis10aCellulose nanocrystals10aNanoflowers10aoxygen reduction reaction1 aHakkeem, Hasna, M. Abdul1 aBabu, Aswathy1 aShilpa, Nagaraju1 aVenugopal, Adithya, A.1 aMohamed, A., P.1 aKurungot, Sreekumar1 aPillai, Saju  uhttps://library.ncl.res.in/content/tailored-synthesis-ultra-stable-aupd-nanoflowers-enhanced-catalytic-properties-using