This study examines the design of a heat exchanger (HE) in production process nickel ferrite (NiFe2O4) nanoparticles using coprecipitation method by determining shell and tube exchanger. The Microsoft Excel application is used as manual calculating machine to facilitate analysis data calculations. research flowchart starts with literature study, preparation tools materials for design, calculati...

The development of noble-metal-free electrocatalysts is regarded as a key factor for realizing industrial-scale hydrogen production powered by renewable energy sources. Inspired nature, which uses Fe- and Ni-containing enzymes efficient generation, Fe/Ni-containing chalcogenides, such oxides sulfides, received increasing attention promising to produce hydrogen. We herein present novel synthetic...