Fig. 1
From: Nickel@Siloxene catalytic nanosheets for high-performance CO2 methanation
Preparation, growth, and electron microscopy characterization of NiO@SiXNS. a Structures of two different Ni2+-impregnated SiXNS samples. The taijitu symbolizes the fact that, when used as the solvent, H2O and EtOH, result in two distinct composite structures, despite being derived from the same solid siloxene precursor. The black spheres around the green SiXNS slabs indicate the Ni2+ ions. b FTIR spectra of pristine SiXNS and SiXNS impregnated with Ni2+ ions in EtOH and H2O. c Scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) and transmission electron microscopy (TEM) images of NiO@SiXNS-H2O, and d SEM and TEM images of NiO@SiXNS-EtOH
