No abstract

A fluorescent Ag nanocluster deposited iron based metal organic framework, Ag NC@MIL-101(Fe), was synthesized with significant stability and enhanced catalytic activity towards the heterogeneous reduction of 4-nitroaniline under green and ambient conditions.

The design of highly efficient, robust, and stable electrocatalysts for the oxygen evolution reaction (OER) remains a crucial challenge for the advancement of a number of renewable energy applications, including conversion and storage technology. Here, a robust water oxidation catalyst, Ag‐nanoparticle‐anchored reduced graphene oxide (rGO)‐coated MIL‐88B(Fe) hybrids (AgNPs@rGO/MIL‐88B(Fe)), is developedfor a highelectrocatalytic performance in the OER. Initially, MIL‐88B(Fe) is synthesized through an in situ process in exfoliated graphene oxide dispersion, forming a GO‐coated MIL‐88B(Fe) hybrid. Ag nanoparticles (ca. 3 nm) are then deposited through simultaneous reduction of silver ions and GO to form a robust AgNPs@rGO/MIL‐88B(Fe) combined catalyst. The new catalyst material was tested for the OER and exhibited remarkable catalytic performance, affording a current density of 1 mA cm−2 at a very low overpotential of approximately 395 mV in buffered solution (pH∼7). Furthermore, the sustained catalyst stability with Tafel slopes of 60 mV dec−1 is one of the best electrocatalytic performances reported at neutral pH.

Monodisperse silver nanoparticles supported layered double hydroxides (Ag NPs–LDH) were preferentially deposited on the outer surfaces of pillared LDH offered a high catalytic activity on alcohol oxidation.