A review article based on composite graphene @tungsten oxide thin films for various applications

Electronic Structure Effect of PtCo Alloy with Adjustable Compositions for Efficient Methanol Electrooxidation

“…Various efficient strategies have been developed to break the challenges of fuel cells, such as doping, depositing, alloying, surface engineering, etc. − One such approach is to enhance Pt utilization by dispersing Pt nanoparticles (NPs) on high specific surface area supports. Carbon materials, including graphene, carbon fibers (CFs), mesoporous carbon, biomass-derived biochar, and multiwalled carbon nanotubes (MWCNTs), all have been extensively studied as supportive materials. − Among them, MWCNTs have garnered significant interest owing to their excellent conductivity and electrochemical stability. − In addition, incorporating other metal elements such as Ni, Co, and Pd in Pt NPs has been shown to significantly improve the utilization and electroactivity of Pt-based alloys through electronic structure effects. − For example, Chen et al synthesized ordered PtSn NPs with higher MOR performance and durability than those of commercial catalysts …”

Multicolored inorganic electrochromic materials: status, challenge, and prospects

“…[19][20][21] Since Deb et al reported the first instance of inorganic electrochromic materials and devices when studying amorphous and crystalline tungsten oxide at Cyanamid Corporation in 1969, inorganic electrochromic materials have experienced rapid development over the past 50 years. 22,23 The coloring mechanism of inorganic electrochromic materials represented by transition metal oxides (TMOs) and Prussian blue (PB) and its analogs (PBAs) is related to the presence of unpaired electrons in the d orbital. Under certain conditions, a reversible transformation occurs to form a mixed-valence state, where the color varies with the valence state and concentration of ions.…”

Selective Co(II) Adsorption Using Hollow ZIF-8 Nanostructures with Embedded Fe3O4 Nanoparticles

“…Metal–organic frameworks (MOFs) are highly ordered porous crystalline materials composed of coordinated units of organic linkers and metal or metal nodes . MOFs have made significant progress in various fields such as catalysis, sensing, gas separation, drug delivery, and water treatment due to their unique properties. − MOFs are also promising adsorbents due to their porous structure and adjustable size. However, pristine MOFs have limitations such as insufficient active centers and a high mass transfer resistance.…”