94474-32-5Relevant academic research and scientific papers
Robust fibrillar nanocatalysts based on silver nanoparticle-entrapped polymeric hydrogels
Kuttiplavil Narayanan, Rohini,Janardanan Devaki, Sudha,Prasada Rao, Talasila
, p. 31 - 40 (2014)
Robust fibrillar network of hydrogels entrapped with silver nanoparticles were prepared by in situ polymerization of acrylic acid and reduction of silver nitrate using amidodiol as cross-linking cum reducing agent under ambient conditions. Silver nanoparticle-entrapped polyacrylic acid-amidodiol hydrogels (SPAGs) were characterized by UV-visible spectroscopy, SEM, TEM, XRD and rheology. Further, catalytic activities of SPAGs were studied using dyes such as methylene blue, rhodamine 6G and crystal violet. Effects of temperature and pH on the reduction process were studied. The activation energy for the reduction process was calculated and found to be decreased by ～10 kJ/mol in the SPAG-catalysed reaction. In addition, SPAGs showed excellent reusability, easy separation, high rate constant and absence of induction period. All these results suggested SPAGs as a promising catalyst for the reduction of organic molecules.
Functional liquid crystalline gels through multi-scale hierarchical self-assembly of LAPONITE and amidodiol
Narayanan, Rohini Kuttiplavil,Sadanandhan, Neethu Kalloor,Sasi, Renjith,Devaki, Sudha Janardhanan
, p. 8556 - 8564 (2016)
Herein we demonstrate the design and synthesis of liquid crystalline gels through multi-scale hierarchical self-assembly of LAPONITE and amidodiol in water. These two components interact with each other through non-covalent interactions, such as hydrogen bonding and ion-dipole interactions, to form highly ordered superstructures in different dimensions and length scales. Effects of concentration of amidodiol and timescale on specific modes of packing were studied using various microscopic and spectroscopic techniques, such as PLM, SEM, TEM, XRD, rheology and FTIR. Presence of hydroxyl groups was confirmed by chemical analysis. A plausible mechanism for the formation of superstructures in functionalized LAPONITE-amidodiol gel (FLAG) was proposed. Electrochemical impedance studies of the FLAG showed low charge transfer resistance (245 Ω) with a stable rectangular electrochemical window (-0.4 V to 1.5 V). Galvanostatic studies revealed good cycling stability with a specific capacitance of 1856 mF g-1. Results suggest that FLAGs can be exploited as an efficient gel electrolyte in energy storage devices.
