Abstract Electrochemical water splitting requires efficient oxidation catalysts to accelerate the sluggish kinetics of reaction. Here, we report a promisingly dendritic core-shell nickel-iron-copper metal/metal oxide electrode, prepared via dealloying with an electrodeposited alloy as precursor, catalyst for oxidation. The as-prepared electrode is characterized porous shells and metallic cores. This tri-metal-based exhibits remarkable activity toward in alkaline medium overpotential only 180...

The use of water as an oxygen and hydrogen source for the paired oxygenation hydrogenation organic substrates to produce valuable chemicals is utmost importance a means establishing green chemical syntheses. Inspired by active Ni

A robust water oxidation catalyst based on copper oxide was prepared by facile electrodeposition of Cu2+ from borate buffer solution under near neutral conditions. The Cu–Bi thin film exhibits high activity and long-term stability in Cu2+-free pH 9 buffer. steady current density 1.2 mA/cm2 sustained for at least 10 h 1.3 V versus NHE without iR compensation, which sets a new benchmark copper-based OEC.

A water-oxidation catalyst with high intrinsic activity is the foundation for developing any type of water-splitting device. To celebrate its 10 years anniversary, in this Perspective we focus on state-of-the-art molecular catalysts (MWOCs), Ru-bda series (bda = 2,2′-bipyridine-6,6′-dicarboxylate), to offer strategies design and synthesis more advanced MWOCs. The O—O bond formation mechanisms, derivatives, applications, reasons behind outstanding catalytic activities are summarized...

Developing industrial-grade electroreduction of CO2 to produce formate (HCOO–)/formic acid (HCOOH) depends on highly active electrocatalysts. However, structural changes due the inevitable self-reduction catalysts result in severe long-term stability issues at current density. Herein, linear cyanamide anion ([NCN]2–)-constructed indium nanoparticles (InNCN) were investigated for reduction HCOO– with a Faradaic efficiency up 96% under partial density (jformate) 250 mA cm–2. Bulk electrolysis...

A successful team: molecular device based on multiwalled carbon nanotubes functionalized by a mononuclear ruthenium catalyst has been shown to split water electrochemically (see picture; ITO=indium tin oxide). The readily prepared electrode showed excellent electrocatalytic activity for the oxidation of water, high current density, and low overpotential, constitutes one step forward in design artificial photosynthetic systems. Detailed facts importance specialist readers are published as...

Abstract Water‐splitting photoanodes based on semiconductor materials typically require a dopant in the structure and co‐catalysts surface to overcome problems of charge recombination high catalytic barrier. Unlike these conventional strategies, simple treatment is reported that involves soaking sample pristine BiVO 4 borate buffer solution. This modifies local environment by introduction moiety at molecular level. The self‐anchored plays role passivator reducing as well ligand modifying...

Time to split: Supramolecular assemblies containing both photosensitizers and a ruthenium water-oxidation catalyst were prepared characterized. The pictured assembly exhibits, for the first time, enhanced visible-light-driven water oxidation activity. Detailed facts of importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by authors. Please note: publisher is responsible content...

Solar fuels: Dinuclear ruthenium catalysts prepared from two covalently bridged monomeric catalytic units show outstanding activities towards the oxidation of water with high turnover numbers up to 43 000 and frequencies 40 s−1 (see picture). Direct comparison performance parameters indicates that dimers are significantly more active as than monomers. As a service our authors readers, this journal provides supporting information supplied by authors. Such materials peer reviewed may be...

Low-cost transition metal-based electrocatalysts for water oxidation and understanding their structure–activity relationship are greatly desired clean sustainable chemical fuel production. Herein, a core–shell (CS) NiFeCr metal/metal hydroxide catalyst was fabricated on 3D Cu nanoarray by simple electrodeposition–activation method. A synergistic promotion effect between electronic structure modulation nanostructure regulation presented CS-NiFeCr oxygen evolution reaction (OER) catalyst: the...

Resolving the questions, namely, selection of Mn by nature to build oxygen-evolving complex (OEC) and presence a cubic Mn3CaO4 structure in OEC coupled with an additional dangling (Mn4) via μ-O atom are not only important uncover secret water oxidation nature, but also essential achieve blueprint for developing advanced water-oxidation catalysts artificial photosynthesis. Based on experimental results reported so far literature our own findings, we propose new hypothesis mechanism OEC. In...

A highly active supramolecular system for visible light-driven water oxidation was developed with cyclodextrin-modified ruthenium complex as the photosensitizer, phenyl-modified complexes catalysts, and sodium persulfate sacrificial electron acceptor. The catalysts were found to form 1:1 host-guest adducts photosensitizer. Stopped-flow measurement revealed interaction is essential facilitate transfer from catalyst sensitizer. As a result, remarkable quantum efficiency of 84% determined under...

In this work, two Cu(II) complex compounds are designed and synthesized for applications as p-type dopants in solid-state perovskite solar cells (PSCs). Through the characterization of optical electrochemical properties, Cu(bpcm)2 is shown to be eligible oxidization commonly used hole-transport material (HTM) Spiro-OMeTAD. The reason electron-withdrawing effect chloride groups on ligands. When was applied dopant PSCs containing Spiro-OMeTAD HTM, an efficiency high 18.5% achieved. This first...

Cobalt–oxo cubane clusters were immobilized on a Nafion film-coated fluorine-doped tin oxide (FTO) electrode and an α-Fe2O3 photoanode as surface catalysts for water oxidation. The performance of electrochemical splitting indicated that these earth-abundant metal complexes retain their homogeneous reactivity the electrode. Furthermore, efficient visible light-driven oxidation was realized by coupling molecular electrocatalyst with inorganic semiconductor noble metal-free photoanode, showing...

The use of cobalt porphyrin complexes as efficient and cost-effective molecular catalysts for water oxidation has been investigated previously. However, by combining a set analytical techniques (electrochemistry, ultraviolet–visible spectroscopy (UV–vis), scanning electron microscopy (SEM), energy-dispersive X-ray (EDS), synchrotron-based photoelectron (SOXPES HAXPES)), we have demonstrated that three different porphyrins, deposited on FTO glasses, decompose promptly into thin film CoOx the...

The development of a highly active manganese-based water oxidation catalyst in the design an ideal artificial photosynthetic device operating under neutral pH conditions remains great challenge, due to instability pivotal Mn3+ intermediates. We report here defective and "c-disordered" layered manganese oxides (MnOx-300) formed on fluorine-doped tin oxide electrode by constant anodic potential deposition subsequent annealing, with catalytic onset (0.25 mA/cm2) at overpotential (η) 280 mV...

Dramatic effects of <italic>ortho</italic>, <italic>meta</italic> and <italic>para</italic> substituents on the catalytic performances Fe-porphyrin for CO₂ reduction to CO have been investigated.

Abstract The use of water as an oxygen and hydrogen source for the paired oxygenation hydrogenation organic substrates to produce valuable chemicals is utmost importance a means establishing green chemical syntheses. Inspired by active Ni 3+ intermediates involved in electrocatalytic oxidation nickel‐based materials, we prepared NiB x catalyst used various compounds. was further employed both anode cathode electrosynthesis cell respective compounds, with source. Conversion efficiency...

Gemeinsam zum Erfolg: Mit einer Funktionseinheit aus mehrwandigen Kohlenstoffnanoröhren, auf denen ein Rutheniumkatalysator immobilisiert ist, wurde Wasser gespalten (siehe Bild; ITO=Indiumzinnoxid). Die Elektrode zeigte eine hervorragende elektrokatalytische Aktivität bei der Oxidation von mit hoher Stromdichte und einem niedrigen Überpotential, was Fortschritt Entwicklung künstlicher Photosynthesesysteme ist. Detailed facts of importance to specialist readers are published as "Supporting...

Two novel dopant-free hole-transport materials for perovskite solar cells with spiro[dibenzo[<italic>c</italic>,<italic>h</italic>]xanthene-7,9′-fluorene] skeletons were prepared <italic>via</italic> facile synthesis routes.

A hierarchically structured Ni–Co–P film exhibits remarkable activity toward the hydrogen evolution reaction with a current density of −10 mA cm⁻²at −30 mV<italic>vs.</italic>the RHE.