To replace the existing noble-metal-based catalysts, developing highly efficient, stable electrocatalysts for oxygen reduction reactions for the increased current generation with lower overpotential is a demanding undertaking. In the present work, CuO-NiO/rGO nanocomposites were prepared using simple, cost-effective Co-precipitation methods. They act as highly effective electrocatalysts for oxygen reduction reactions in an alkaline medium.
View Article and Find Full Text PDFWe have synthesized a novel ferromagnetic material by coating α-FeO nanoparticles with N-doped carbon matrix using a simple combustion method. Expired paracetamol drugs are used as nitrogen and carbon source. This α-FeO/NC shows ferromagnetic property due to the incorporation of oxygen defects.
View Article and Find Full Text PDFNickel-encapsulated nitrogen-doped carbon nanotubes (Ni-TiO-NCNTs) are synthesized via chemical vapor deposition by thermal decomposition of acetylene with acetonitrile vapor at 700 °C on the Ni-TiO matrix. TiO is used as a dispersant medium for Ni nanoparticles, which assists in higher CNT growth at high temperatures. A reference catalyst is made by following the similar procedure without acetonitrile vapor, which is called a Ni-TiO-CNT.
View Article and Find Full Text PDF