Spectral optical characteristics of nanoparticles for effective extinction of black body radiation with high temperatures

•Fires and high-temperature processes are the sources of intense optical radiation.•Attenuation (absorption) of optical radiation is very important for people safety.•Novel nanoparticles are applied for attenuation of black body radiation.•Optical properties of nanoparticles have been investigated for 200–6000 nm.•NiO-Ni nanoparticles attenuate radiation with temperatures 1000–2000 K. Different types of fires and high-temperature technological processes are the sources of intense dangerous optical radiation, which can be modeled by black body radiation. The strongly enhanced extinction and absorption of black body radiation with high temperatures in the range 1000–2000 K in wide spectral interval of 200–6000 nm by nanoparticles are of significant science and technical interest. The investigation and analysis have been conducted of plasmonic characteristics of core-shell nanoparticles for radiation wavelengths in the spectral interval 200–6000 nm and in the range of NP radii ~25–200 nm with the shell thickness 5 nm on the base of computer modeling. These results highlight the possibility of novel core-shell NiO-Ni nanoparticles with the radii of about ~75–175 nm for effective application as attenuators for radiation in the optical spectrum 200–6000 nm from sources with temperatures in the range 1000–2000 K. Fe3O4-Au and SiO2-Au nanoparticles show possibility for extinction of radiation with the temperatures of 1500, 2000 K and less possibility for extinction radiation with 1000 K.