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Arni M. Pornea,John Marc C. Puguan,Virendrakumar G. Deonikar,Hern Kim 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.82 No.-
The discovery of the lubricant infused surface (LIS) embarked a promising approach on the active surfaceapplications. Demonstrated here is an intricately designed multifunctionalfilm influenced by bottom-upapproach, utilizing the underlying features of the compounding materials to provide greaterfunctionalities and opportunities for various applications. Through facile fabrication method, a porousfilm was generated by incorporating ZnO nanoparticle as a porogen onto PDVF polymer prior castingfollowed by simple acid washing for the removal of ZnO. Wax was used to lubricate the porous thinfilm;the design was inspired by the advantageous property of the wax that will enhance surface wettingproperties, exhibiting the surface with thermal responsiveness, anticorrosion protection and robuststructure. By taking advantage onto the lubricant’s rheological property, droplet motion control inresponse with the temperature variation was explored. Surface responses on different kinds of liquidswere also studied. The multifunctionalfilm manifested anticorrosion protection, which is supported byelectrochemical measurement technique. Thefilm’s stability was explored through exposure on harshcondition that successfully preserve its robust architecture.
Virendrakumar G. Deonikar,Pramod V. Rathod,Arni M. Pornea,John Marc C. Puguan,Kyoshik Park,Hern Kim 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.86 No.-
Catalytic hydrolysis of chemical hydrides with the use of NaBH4 is a safe and effective way to provide hydrogen fuel for new energy vehicles and portable electronic devices. Herein we developed a Cu and Mo promoted Co hierarchical composites (Co1−xCuxMoO4) for hydrolysis of NaBH4 via an easy synthesis route. FESEM analysis depicts that the morphology of Co1−xCuxMoO4 hierarchical composites varied significantly from irregular microsphere to marigold microsphere to rose like morphology with the increase in Cu (x) ratio with respect to Co (1 − x). Flower-like morphological architecture and crystal configuration empower the supported catalyst to exhibit a remarkable catalytic activity and outstanding catalytic activity was obtained for marigold-like Co0.9Cu0.1MoO4 catalyst with an H2 generation rate of 1005.7 mL min−1 g−1, which confirms existence of synergistic effect between Co, Cu and Mo. Lower loading of Cu in Co1−xCuxMoO4 supported the active sites of Co to increase its catalytic activity. Additionally, the catalyst exhibits good recyclability after five successive runs of hydrolytic reaction, making it a robust catalyst for hydrolysis of NaBH4 and could be considered as a potential catalyst for portable hydrogen fuel systems.