Environmentally benign synthesis of Co3O4-SnO2 heteronanorods with efficient photocatalytic performance activated by visible light

Core–Shell CoSn@CoSnOx Nanoparticles Encapsulated in Hollow Carbon Nanocubes as Anodes for Lithium‐Ion Batteries

“…Moreover, the interplanar spaces between the lattice fringes of 0.212 and 0.144 nm can be indexed to the (112) plane of SnO 2 and the (440) plane of Co 3 O 4 , respectively, corroborating the composition of the oxides. [30,[32][33][34] The EDS mappings (Figure 4d-h) verify the conformal covering of the oxide layer and the successful preparation of yolk-shell-structured CoSn@CoSnO x @C NCs.…”

Co3O4 Hollow Nanosphere-Decorated Graphene Sheets for H2S Sensing near Room Temperature

“…To clarify the influence of the Co 3 O 4 –graphene heterojunction on gas response, the energy band structure was studied in detail. The band gaps and valence bands of Co 3 O 4 and graphene were obtained by UV–vis diffuse reflectance and XPS valence band (VB) spectra. , The band gaps ( E g ) of Co 3 O 4 and graphene were estimated to be 1.84 and 1.32 eV (insets of Figure S8a,b), and the VBs were approximately 0.335 and 1.51 eV (Figure S8c,d), respectively. Thus, it can be inferred that the conduction bands ( E c ) of Co 3 O 4 and the graphene are −1.51 and 0.19 eV .…”

“…However, the holes transfer from the VB of graphene to the VB of Co 3 O 4 . Hence, the space charge region generates at the heterogeneous interface, namely, a built-in electric field from Co 3 O 4 to graphene. , Because the built-in electric field can make it easier for adsorbed oxygen to capture electrons, more extra chemically adsorbed oxygen ions are formed on the heterogeneous interface . When the Co 3 O 4 –HNS/G sensor is put into H 2 S gas, oxygen ions are more chemically adsorbed and the response is higher.…”

Synthesis of Cu3P/SnO2 composites for degradation of tetracycline hydrochloride in wastewater

“…26,27 Therefore, there were multiple researches reported the photocatalytic properties of SnO 2 doped metallic elements such as cobalt-doped SnO 2 nanoparticles, Au/SnO 2 composites and Ag/SnO 2 composites [28][29][30] or non-metallic elements such as carbon-doped SnO 2 nanostructures and Cldoped SnO 2 photocatalysts. 31,32 Some publications reported SnO 2 coupled with other narrow-band semiconductors such as AgBr/SnO 2 composites and Co 3 O 4 /SnO 2 composites, 24,33,34 and SnO 2 coupled with wideband semiconductors such as TiO 2 (ref. 35) or ZnO.…”