Visible light-driven molecular oxygen activation for oxidative amidation of alcohols using lead-free metal halide perovskite.

Herein, we report the modulation of the band structures of halide perovskite CsCuBr by tuning the synthesis methods. The photocatalyst PC-1, synthesized by the hot injection method, has a more negative conduction band minima (CBM) than the photocatalyst PC-2, synthesized at room temperature. As a result, PC-1 can activate molecular O more efficiently to initiate the radical-mediated dehydrogenation of alcohols.

Deciphering charge transfer dynamics of a lead halide perovskite-nickel(ii) complex for visible light photoredox C-N coupling.

Photoredox catalysis involving perovskite quantum dots (QDs) has gained enormous attention because of their high efficiency and selectivity. In this study, we have demonstrated CsPbBr QDs as photocatalysts for the C-N bond formation reaction. The introduction of Ni(dmgH) (dmgH = dimethyl glyoximato) as a cocatalyst with CsPbBr QDs facilitates photocatalytic C-N coupling to form a wide variety of amides.

The low loading of metal in metal-organic framework-derived NiN@NC promotes amide formation through C-N coupling.

The pyrolysis of Ni-substituted zeolitic imidazolate framework-8 produces NiN@NC with an ultra-low loading of Ni (7.4 × 10 mol%). The Ni-N coordination, subnanometer particle size, and uniform distribution of NiN on the NC support lead to excellent catalytic activity (TON = 2702) and selectivity for the amination of aldehydes to produce amides.

Metal-organic framework-derived CoN nanoparticles on N-doped carbon for selective -alkylation of aniline.

-alkylation of anilines by alcohols can be used as an efficient strategy to synthesise a wide range of secondary amines. In this respect, a hydrogen borrowing methodology has been explored using precious metal-based catalysts. However, the utilisation of cheap and readily available transition metal based catalysts is required for large-scale applications.

Iron(III) ion-assisted transformation of ZIF-67 to a self-supported FeCo-layered double hydroxide for improved water oxidation.

Herein, we have demonstrated Lewis acid Fe(III)-assisted hydroxylation of ZIF-67 to form FeCo-layered double hydroxide (LDH) nanosheets. The catalyst FeCo-LDH produced an excellent water oxidation activity to reach a current density of 20 mA cm at only 190 mV overpotential, superior to that of hydrothermally synthesized LDH with a similar composition.