Adsorbed Carbon Monoxide-Enabled Self-Terminated Au-Grafting on Pt Nanoclusters for Enhanced Methanol Electrooxidation.

The study presents the first example of an adsorbed carbon monoxide (CO) enabled self-terminated Au-grafting on triphenylphosphine (PPh) stabilized Pt nanoclusters (NCs) (Pt (PPh)Cl NCs or Pt NCs). Adsorbed PPh ligands weaken the Pt-CO bond enabling the self-terminated Au-grafting on Pt NCs. The Au-grafted Pt NCs exhibit enhanced methanol electrooxidation (MOR) in acidic solutions.

Platinum-Grafted Twenty-Five Atom Gold Nanoclusters for Robust Hydrogen Evolution.

A robust hydrogen evolution is demonstrated from Au(PET)] nanoclusters (PET = 2-phenylethanethiol) grafted with minimal platinum atoms. The fabrication involves an electrochemical activation of nanoclusters by partial removal of thiols, without affecting the metallic core, which exposes Au-sites adsorbed with hydrogen and enables an electroless grafting of platinum. The exposed Au-sites feature the (111)-facet of the fcc-Au nanoclusters as assessed through lead underpotential deposition.

Insights into Chemical Changes Causing Transient Potential Patterns during Cobalt Electrodeposition: An SHINERS Investigation.

Transient potential oscillations in a self-organized system involve a sequence of mass-transfer-limited chemical reactions. Often, these oscillations determine the microstructure of the electrodeposited metallic films. In this study, two distinct potential oscillations have been observed during galvanostatic deposition of cobalt in the presence of butynediol.

Precision Nanocluster-Based Toroidal and Supertoroidal Frameworks Using Photocycloaddition-Assisted Dynamic Covalent Chemistry.

Atomically precise nanoclusters (NCs) have recently emerged as ideal building blocks for constructing self-assembled multifunctional superstructures. The existing structures are based on various non-covalent interactions of the ligands on the NC surface, resulting in inter-NC interactions. Despite recent demonstrations on light-induced reversible self-assembly, long-range reversible self-assembly based on dynamic covalent chemistry on the NC surface has yet to be investigated.

Electrochemical Deposition and Dissolution of Thallium from Sulfate Solutions.

The electrochemical behavior of thallium was studied on glassy carbon electrodes in sulfate solutions. Cyclic voltammetry was used to study the kinetics of the electrode processes and to determine the nature of the limiting step of the cathodic reduction of thallium ions. According to the dependence of current on stirring rate and scan rate, this process is diffusion limited.