Low-cost and high-performance advanced electrocatalysts for direct methanol fuel cells are of key significance the improvement environmentally-pleasant energy technologies. Herein, we report facile synthesis cobalt phosphate (Co3(PO4)2) nanospheres by a microwave-assisted process utilized as an electrocatalyst oxidation. The phase formation, morphological surface structure, elemental composition, textural properties synthesized have been examined powder X-ray diffraction (XRD), Fourier...

Photoelectrochemical water splitting with metal oxide semiconductors offers a cost-competitive alternative for the generation of solar fuels. Most materials studied so far suffer from poor charge-transfer kinetics at semiconductor/liquid interface, making compulsory use catalytic layers to overcome large overpotentials required oxidation reaction. Herein, we report very soft electrolytic synthesis deposition method, which allows remarkably enhanced BiVO4 photoanodes by sequential addition Zr...

Photoelectrochemical water splitting using semiconductor materials has emerged as a promising approach to produce hydrogen (H2) from renewable resources such sunlight and water. In the present study, Ag3PO4 nanoparticles were electrodeposited on BiVO4 photoanodes for splitting. A remarkable oxidation photocurrent of 2.3 mA·cm–2 at 1.23 V versus reversible electrode with ∼100% Faradaic efficiency was obtained, which constitutes notable increase compared pristine photoanode. It is demonstrated...

The electrocatalysis of oxygen evolution reaction (OER) has been studied at the face centered cubic (FCC) NixFe3-xO4 (0 ≤ x 1.0) anodes in 1M KOH solutions 25 °C. These oxides were synthesized by hydrothermal method and reproduced form film on a nickel support an oxide-slurry painting technique. effect Ni substitution base oxide (Fe3O4) was investigated with regards to morphology, structure catalytic performance using techniques, such as, scanning electron microscopy (SEM), infrared (IR),...

Herein, we report the cooperative effect of Zr doping and vacuum annealing on carrier dynamics interfacial kinetics anodized TiO2 nanotubes for light-driven water oxidation. After evaluation different loads conditions, it was found that both lead to a significantly enhanced light harvesting efficiency photoelectrochemical performance. The substitution Zr4+ by Ti4+ species leads higher density surface defects such as oxygen vacancies, facilitating electron trapping Zr4+, which reduced charge...

Globally, the emergence of drug-resistant bacteria has created an urgent need for effective method to remove antibiotics from pharmaceutical wastewater. Engineering Bismuth vanadate (BiVO4) with oxygen evolution cocatalyst (OEC) holds a promising potential enhancing water splitting efficiency in production hydrogen (H2) using free solar energy. Here, we successfully developed Zr:BiVO4/NiFeOOH heterojunction by electrodeposition and photoelectrochemical transformation. photoanodes exhibit 5...

The construction of Zr:BiVO 4 @Bi 2 S 3 –CoS heterojunctions has been demonstrated to be an effective way facilitate PEC water splitting and degradation organic pollutants.

Thermocatalytic methane decomposition (TCMD) involving metal oxides is a more environmentally friendly and cost-effective strategy for scalable hydrogen fuel production compared to traditional steam reforming (MSR), as it requires less energy produces fewer CO/CO2 emissions. However, the unsupported oxide catalysts (such α-Fe2O3) that would be suited this purpose exhibit poor performance in TCMD. To overcome issue, novel was developed part of work, whereby oxygen vacancies (OVs) were...

This work examines the cooperative effect between Zr doping and oxygen vacancy engineering in anodized TiO2 nanotubes (TNTs) for enhanced reduction reactions (ORRs). dopant annealing conditions significantly affected electrocatalytic characteristics of grown TNTs. results Zr4+ substituted Ti4+ species, which indirectly creates donors that enhance charge transfer kinetics reduce carrier recombination TNT bulk. Moreover, vacancies promote creation unsaturated Ti3+(Zr3+) sites at surface, also...

Crystalline–amorphous core–shell-like heterostructures have attracted considerable attention in electrocatalysis due to their unique electronic and structural properties; however, tuning the surface composition of amorphous shell remains a major challenge. In this work, we report simple, low-cost, one-pot hydrazine-assisted chemical deposition method for synthesizing series Co-doped Ni@Ni(OH)2 catalysts with crystalline Ni core an Ni(OH)2 shell. Among prepared catalysts, sample containing 10...

Electrooxidation of urea plays a substantial role in the elimination urea-containing wastewater and industrial urea. Here, we report electrodeposition nickel hydroxide catalyst on commercial carbon paper (CP) electrodes from dimethyl sulphoxide solvent (Ni(OH)2-DMSO/CP) for electrooxidation under alkaline conditions. The physicochemical features Ni(OH)2-DMSO/CP catalysts using scanning electron microscopy X-ray photoelectron spectroscopy revealed that shows nanoparticle features, with...

Platinum electrocatalysts (Pt-B/TON-N2, Pt-B/TON-air and Pt-H/TON-air) incorporated on annealed titanium oxide nanotubes (TONs) have been successfully synthesized by chemical deposition method using sodium borohydride hydrazine, reducing agents. TONs were firstly prepared anodization of pure Ti foil in HF solution followed annealing air N2 atmosphere. The morphology structure the characterized scanning (SEM), transmission (TEM) electron microscopies, X-ray diffraction (XRD), energy...

n-BiVO4 is a favorable photoelectrode candidate for photoelectrochemical (PEC) water splitting reaction owing to its suitable energy level edge locations an oxygen evolution reaction. On the other hand, sluggish oxidation kinetics of BiVO4 photoanodes when used individually make it necessary use hole blocking layer as well catalysts overcome high kinetic barrier PEC Here, we describe very simple synthetic strategy fabricate nanocomposite that synergistically address both these critical...

We present exemplary fabrications of controlled Nickel phosphate (NiPi)/TiO2 nanotubes arrays (TNTs) in buffer for boosted photoelectrochemical (PEC) water splitting. The TNTs/NiPi composite electrodes revealed a considerably enhanced photocurrent density 0.76 mA/cm2, up to 3-time enhancements than bare TNTs, mostly because the charge separation, decreased carrier recombination, and improving kinetics oxidation. Also, we demonstrated that NiPi can assist PEC features TNTs over varied region...

Photoanodes fabricated by the electrophoretic deposition of a thermally prepared zinc tantalum oxynitride (ZnTaO₂N) catalyst onto indium tin oxide (ITO) substrates show photoactivation for oxygen evolution reaction (OER) in alkaline solutions. The photoactivity OER is further boosted photodeposition cobalt phosphate (CoPi) layers surface ZnTaO₂N photoanodes. Structural, morphological, and photoelectrochemical (PEC) properties modified photoanodes are studied using X-ray diffraction (XRD),...