Delafossite CuFeO2 oxides were grown inside a hydrothermal reactor using Cu2O and FeOOH as precursors and NaOH as mineralizer. During this work the effect of the NaOH mineralizer and the reaction atmosphere was studied by varying the amount of NaOH used in the hydrothermal synthesis and by chang...

The optimal synthesis conditions for the growth of delafossite CuFeO2 thin films via aerosol assisted CVD were studied. An iterative synthesis process was followed until the average atomic ratio of Cu/Fe in the synthesized thin films was close to 1. TiO2 coated borosilicate was initially used as...

Due to the global rising demand there is an enormous interest to recover noble metals most efficiently from aqueous solutions, in particular industrial wastewater. Herein we demonstrate a new concept to recover Ag and Au from sulfate, chlorine and nitrate containing waters e.g. from catalysis pr...

In the present work, an enhancement for the free turbulent convection in a rectangular cavity is examined by using a novel Delafossite Nanofluid. Delafossite CuAlO2 nanoparticles prepared using Al2O3 as dominant at four different weight concentrations of the doping copper 0, 1, 3 and 5% using an...

This study investigated the synthesis of delafossite CuAlO2 with Fe and graphene through a solid-state reaction method. The results of X-ray diffractometry showed that graphene was insoluble in delafossite CuAlO2 while Fe was substituted into Al sites, expanding the d-spacing. From X-ray photoel...

In this paper we investigated the vibrational properties of (Fe,Li)-doped delafossite oxide CuCrO2 by means of Raman experiments. The measurements were carried out at ambient temperature and pressure and on ab- and a(b)c-plane of a single grain. The samples were prepared using self-combustion ur...

Undoped and (Ag,Mg)-doped CuCrO2 semiconductor polycrystalline ceramics were produced using the self-combustion urea nitrate process. The effects of the two dopants on the microstructure, optical properties and electrical properties were investigated. X-ray diffraction results showed that all th...

CuFeO2 delafossite type nano fibers were fabricated by electrospinning. This experiment explored the effects of annealing temperature, precursor concentration, and ambient annealing on the fiber structure. The results of X-ray diffraction studies (XRD) and field emission scanning electronic micr...

The use of nanostructured delafossite oxides in thermoelectric (TE) applications has attracted a great interest due to their high performance and long-term stability at elevated temperatures. Cuprous delafossites, CuMO2 (M = Al, Cr, Fe, Ga, Mn), compared to conventional TE materials, such as Bi2...

The d-electron occupancy of transition metal (TM) oxides is one of the most dominant factors in the catalytic activity in the oxygen evolution reaction (OER). To investigate the spin states and the local atomic structure around the TM atoms in delafossite oxides, CuCrO2, CuMnO2, AgFeO2, CuFeO2, ...

For diamond/metal composite fabrication, coating diamond particles with metal carbide provides improved wettability between the diamond particles and the matrix. In this study, diamond particles were coated with chromium (Cr) using a molten salt method. Diamond and Cr powders were heated at 600–...

We investigate the water-repellent ability of graphene-based surfaces stabilized on silicon carbide (SiC) and the nanocrystalline cerium oxide (CeO2) films electrodeposited on them. Water contact angle is revealed strongly dependent on the number of graphene monolayers on SiC, indicating partial...

As bearing parts, 12Cr2Ni4A is expected to have high hardness and excellent fatigue strength, so carburizing is employed to improve the inherit properties of 12Cr2Ni4A. However, the traditional carburizing is limited by poor microstructure distribution and low rate of carburizing. The rare earth...

A new corrosion inhibitor, cerium malate, was synthesized. Its inhibiting behaviour on coupled Al2Cu-Al2CuMg-Al, Al2CuMg-Al and Al2Cu-Al was studied. Cerium malate is effective in corrosion inhibition of the three coupled systems. The inhibition mechanism of cerium malate on pitting corrosion of...

We present the results of our investigation on iridium cerium compound as a photocathode material for the SuperKEKB photoinjector. A large-size iridium cerium compound with excellent machinability was obtained by a two-stage production method combining cold crucible induction melting and spark p...

The corrosion inhibition mechanism of cerium hydroxycinnamate compounds has been studied and compared as an effective corrosion inhibitor for steel in an aqueous 0.6 M NaCl solution. Surface analysis results showed that the surface of steel coupons exposed to solutions containing cerium hydroxyc...

Porosity defects inevitably formed in the preparation of high-velocity oxy-fuel (HVOF)-sprayed Fe-based amorphous coating, which greatly affected the corrosion resistance and service lives of Fe-based amorphous coating. Sealing treatment could be an effective candidate method to alleviate the pr...

The effect of cerium modification on the microstructure and properties of hypereutectic high chromium cast iron primarily containing 4.0 wt% C and 20.0 wt% Cr was studied by means of optical microscopy, transmission electron microscope, scanning electron microscope, and energy dispersive X-ray s...

Hydriding reaction kinetics of cerium-lanthanum alloy was studied by the pressure-volume-temperature (PVT) method combined with in-situ microscope. The hydride nucleation and the H2 consumption rate approximately follow an exponential model at the initial time. Furthermore, the H2 consumption ra...

In this study, cerium carbide embedded in nitrogen-doped carbon (CeCx-NC) has been prepared by a facile pyrolysis of melamine formaldehyde resin containing rare-earth element. The as-prepared CeCx-NC catalyst shows high electrocatalytic activity towards oxygen reduction reaction (ORR) in alkalin...