Plasma Jet Sputtering as an Efficient Method for the Deposition of Nickel and Cobalt Mixed Oxides on Stainless-Steel Meshes: Application to VOC Oxidation

Hollow cathode plasma sputtering is an advantageous method of preparing catalysts in the form thin oxide films on supports. Such are particularly suitable for processes such as catalytic total oxidation volatile organic compounds (VOCs), representing economically feasible and environmentally friendly VOC abatement. Catalysts with Ni:Co molar ratios 1:4, 1:1, 4:1 were prepared stainless-steel meshes compared single-component Ni Co catalysts. The properties characterized by EDX, SEM, powder XRD, temperature-programmed reduction (H2-TPR), Raman spectroscopy, XPS. Powder XRD revealed formation various crystalline phases that dependent ratio. NiO Co3O4 identified catalysts, whereas Ni-Co mixed oxides a spinel structure, together NiO, found containing both Co. spectra at high working pressures showed slightly lower intensity bands, indicating presence smaller particles. TPR profiles confirmed improved reducibility to Catalytic activity was investigated deep ethanol toluene, which used model compounds. In oxidation, sputtered up 16 times higher than commercial Cu-Mn catalyst EnviCat® VOC-1544. main benefits much content negligible effect internal diffusion. Moreover, process jet can be easily implemented large scale.