Review of Catalytic Electrodes Containing Iron-Cobalt-Nickel Composite Components for Water Electrolysis.

Transition metal-based electrocatalytic materials for hydrogen production through water splitting offer advantages in terms of price and availability compared to noble metal-based catalysts, among which, Fe-, Co-, and Ni-based compounds are the most typical and widely studied materials. Utilizing the synergistic effects between composite components in compounds containing multiple metal elements is an important way to improve the catalytic performance of catalysts, so developing ternary or multiple active center catalysts containing Fe, Co, and Ni is a promising direction. In this mini-review, we provide an summary of the latest achievements of water splitting catalyst materials simultaneously containing Fe, Co, and Ni elements.

Assessing the reinforced molecular/mechanical behaviors of GOs@Mo-MOFs films deposited via electrophoresis onto microdevices: Experimental and theoretical perspectives.

One of the primary hurdles in microdevice fabrication lies in ascertaining the most impactful tactics for adapting metal surfaces. Through a one-pot tackle and distinct mechanochemical reactions evoked by 15 min aqueous wet sand-milling (SM-15), we successfully grafted Mo-based metal-organic frameworks (Mo-MOFs) onto graphene oxides (GOs). Following this, a convenient and readily scalable methodology of electrophoretic deposition was implemented to create controllable thickness of SM-15 GOs@Mo-MOFs lubricating films, achieving considerable enhancements of 143% and 91% in hardness and Young's modulus, respectively, when compared to those of SM-15 Mo-MOFs.

Electrochemical behavior of CoCrMo alloy for dental applications in acidic artificial saliva containing albumin.

The electrochemical properties of CoCrMo alloy immersed in different artificial saliva with or without Ca and albumin were studied by open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP), and meanwhile the microstructures features, phase identification and chemical composition of the alloy were analyzed by SEM, EDS, XRD and RA-IR to further understand the electrochemical behavior of the alloy. The results indicated that the self-passivation behavior of the alloy occurred universally and was obviously distinct with each other in different acidic artificial saliva. No phase transformation was observed and the oxide layer and corrosion products exhibited amorphous nature.

Novel perovskite-based composites, La Nd FeO@activated carbon, as efficient catalysts for the degradation of organic pollutants by heterogeneous electro-Fenton reactions.

Perovskites, which have excellent electrocatalytic properties, are promising for use in heterogeneous catalysis. However, the design and development of green and effective electrocatalysts for environmental water treatment remains an arduous challenge. To overcome such difficulties, we present a facile sol-gel method for the design and preparation of a series of perovskite-activated carbon (AC) composites (La Nd FeO@AC) for the degradation of methyl orange (MO) by heterogeneous electro-Fenton reactions.