Mn₃O₄/graphene nanocomposites: outstanding performances as highly efficient photocatalysts and microwave absorbers

Abstract

Mn3O4 incorporated graphenes synthesized by a deposition-solvothermal process were efficiently used for methylene blue degradation under visible illumination (88 W, λ > 420 nm) and under microwave irradiation (800 W, 2.45 GHz, 373 K).

Fe3O4 nanoparticles decorated on a CuS platelet-based sphere: a popcorn chicken-like heterostructure as an ideal material against electromagnetic pollution

“…A variety of studies have been devoted to the synthesis of EA materials to obtain EA materials having properties such as strong absorption capability, wide effective absorption bandwidth, high thermal stability, lightweightedness, and anti-oxidation. [6][7][8] With the development of technology, various strategies have been explored to synthesize functional materials to achieve better EA performance; these materials include metal oxides or suldes, such as ZnO, 9 CoFe 2 O 4 , 10 SnO 2 , 11 CoS, 12 and CuS 13-15 as well as carbon materials such as carbon nanotubes (CNTs), 16,17 graphene or reduced graphene oxide (RGO), 18 carbon bers (CFs), 19 and/or their hybrids. 20,21 Among the many existing materials, heterostructures of magnetic loss-type and dielectric loss-type materials produce great enhancement in EA performance; these materials include Fe 3 32 graphene CuS, 33 and CuS/ ZnS.…”

Effective photoreduction of graphene oxide for photodegradation of volatile organic compounds

“…The broad (002) peak is a typical pattern of lowered stacking order between the graphene layers. 67,68 XRD patterns of PRGO-0 to PRGO-10 were similar, indicating that the interlayer spacing structure of the PRGOs remained the same aer photoreduction. In addition, peak (100) was present at 2q ¼ 44 for all PRGOs, indicating a short-range order of stacked graphene layers.…”

Highly Efficient Dynamic Degradation of Methylene Blue on Hierarchical Nitrogen/Cobalt‐Co‐Doped Carbonaceous Beads with Diffusion Promoting Nanostructures

“…Furthermore, to illuminate the relatively superior performance of as-prepared samples, related references for contaminants treatment were listed in Table S2. [30,31,32,33,34,29,35,36] There is no doubt that all the methods or materials showed outstanding performance. Of which, the removal efficiency of transition metal and carbon-based materials/PMS systems was higher than that of H 2 O 2 systerms or photocatalytic degradation, manifesting the promising future of transition metal and carbon-based materials.…”