Ru Loading Research Articles

Low temperature dry reforming of methane using Ru-Ni-Mg/ceria-zirconia catalysts: Effect of Ru loading and reduction temperature

Dry reforming catalysts, especially those with activity at moderate temperatures, have been intensely investigated to enhance the conversion of biogas. Here, Ru is evaluated as a promoter for Ni-Mg based catalysts. Catalysts based on 1.4 wt%Ni-1.0 wt%Mg-Ce0.6Zr0.4O2 with Ru (0.02–0.32 wt%) were prepared using incipient wetness. The reducibility of the catalysts and conversions increased with increasing Ru content. Increases in conversions with increasing Ru loading was attributed to the additional active sites and synergistic effect between Ru and Ni, which weakened Ni-Mg interactions. Samples showed dry reforming activity at low temperatures (450–510 °C). Reaction rates and activation energies of higher loading Ru samples (1.4 wt%Ni-1.0 wt%Mg/Ce0.6Zr0.4 O2 with 0.16 and 0.32 wt%Ru) decreased when the reduction temperature was raised from 300 to 400 °C. A 20 h TOS study showed stable catalytic activity with minimal coke deposition. The results suggest that Ru is an alternative to Pt in promoting low temperature dry reforming of methane.

Hydrogen production from ammonia decomposition over Ru-rich surface on La2O2CO3-Al2O3 catalyst beads

Three ruthenium-supported catalyst beads (Ru/Al2O3, Ru/La2O3-Al2O3 and Ru/La2O2CO3-Al2O3) were synthesized and tested for ammonia decomposition. The catalytic activity of the Ru/La2O2CO3-Al2O3 beads was significantly higher than that of the Ru/Al2O3 and Ru/La2O3-Al2O3 beads. This was primarily attributed to the addition of La, which encouraged electron donation from the bead surface to the Ru particles, increasing the rate of N2 desorption. In particular, a higher Ru surface concentration was achieved over the boundary layer of La2O2CO3 compared with La2O3. This is thought to be a result of steric hindrance, with the crystalline surface of La2O2CO3 acting as a structural stabilizer to significantly limit the penetration of Ru particles into the catalyst bead core. SEM-EDS line scanning of transverse sections of the catalyst beads confirmed a higher Ru concentration on the surface of the catalyst beads for Ru/La2O2CO3-Al2O3 compared with Ru/La2O3-Al2O3 and Ru/Al2O3. In fact, the ratio of surface/bulk Ru concentration in Ru/La2O2CO3-Al2O3 was more than twice that of Ru/Al2O3 at equal Ru loadings. The favorable properties of an La2O2CO3 surface-coating can benefit industrial catalyst synthesis, increasing the surface metal concentration compared with traditional La-based Al2O3 beads and pellets.

Electronegativity Enhanced Strong Metal-Support Interaction in Ru@F-Ni3N for Enhanced Alkaline Hydrogen Evolution.

Precious metals (Pt, Ir, Ru, and so on) and related compounds usually demonstrate superb catalytic activity for electrochemical hydrogen production. However, scarcity and stability are still challenges for hydrogen evolution reaction, even for single-atomic-site electrocatalysts. Herein, a fluorine (F) doping strategy is proposed to enhance the strong metal-support interaction between the F-doped Ni3N support and the loaded ruthenium (Ru) species. Via synergistically modulating both the Ru loading amount and F doping concentration, outstanding HER activity was achieved in Ru@F-Ni3N with an overpotential (η) of 115 mV at 100 mA cm-2, superior to the benchmark Pt/C (η = 201 mV). Density functional theory simulation in combination with X-ray photoelectron spectra and X-ray absorption spectroscopy characterizations convincingly demonstrate that, with the strongest electronegativity, F doping could effectively stabilize Ru atoms doped in the F-Ni3N substrate and simultaneously reduce the H bonding strength, which accelerated the desorption of H2. These findings provide a facile strategy to modulate both catalytic activities and stabilities of heteroatom-loaded catalytic materials.

Ru–Ni/GA-MMO composites as highly active catalysts for CO selective methanation in H2-rich gases

CO selective methanation (CO-SMET) is as an ideal H2-rich gases purification measurement for proton exchange membrane fuel cell system. Herein, the graphene aerogel-mixed metal oxide (GA-MMO) supported Ru–Ni bimetallic catalysts are exploited for CO-SMET in H2-rich gases. The results reveal that a three-dimensional network structure GA-MMO aerogel with higher specific surface area, better thermal stability and more defects or structural disorders is formed when MMO:GO mass ratio is in the range of 1–4. After loading of Ru, more NiO are reduced to metallic Ni by hydrogen spillover effect, and thus obviously enhances the reactivity. The GA-MMO supported Ru–Ni catalyst exhibits more excellent metal dispersion, reducibility, stronger CO adsorption and activation than the MMO supported Ru–Ni catalyst, thereby resulting in better catalytic performance and stability. This work offers new insights into the construction of highly active catalyst for the efficient generation of high-quality H2 from H2-rich gases.

Impact of Cerium Oxide on the State and Hydrogenation Activity of Ruthenium Species Incorporated on Mesocellular Foam Silica.

Herein, the impact of cerium species loaded on mesoporous silica of MCF type on the state and catalytic activity of ruthenium species was studied. Up to 20 wt.% of cerium was incorporated on the silica surface, whereas the same 1 wt.% of Ru loading was applied. The samples prepared were examined by low temperature N2 adsorption/desorption, XRD, XRF, ICP-OES, XPS and H2 chemisorption. The catalytic activity of the materials obtained was investigated in the transformation of levulinic acid to γ-valerolactone. It was documented that the presence of Ce favored an increase in the dispersion of ruthenium species, which had a positive impact on the hydrogenation activity for up to 10 wt.% of Ce. Nevertheless, the highest cerium loading had a negative influence on the textural parameters of the support.

Liquid-Metal-Mediated Electrocatalyst Support Engineering toward Enhanced Water Oxidation Reaction.

Functional and robust catalyst supports are vital in the catalysis field, and the development of universal and efficient catalyst support is essential but challenging. Traditional catalyst fabrication methods include the carbonization of ordered templates and high−temperature dehydration. All these methods involve complicated meso−structural disordering and allow little control over morphology. To this end, a eutectic GaInSn alloy (EGaInSn) was proposed and employed as an intermediate to fabricate low−dimensional ordered catalyst support materials. Owing to the lower Gibbs free energy of Ga2O3 compared to certain types of metals (e.g., Al, Mn, Ce, etc.), we found that a skinny layer of metal oxides could be formed and exfoliated into a two−dimensional nanosheet at the interface of liquid metal (LM) and water. As such, EGaInSn was herein employed as a reaction matrix to synthesize a range of two−dimensional catalyst supports with large specific surface areas and structural stability. As a proof−of-concept, Al2O3 and MnO were fabricated with the assistance of LM and were used as catalyst supports for loading Ru, demonstrating enhanced structural stability and overall electrocatalytic performance in the oxygen evolution reaction. This work opens an avenue for the development of functional support materials mediated by LM, which would play a substantial role in electrocatalytic reactions and beyond.

Supported ruthenium catalyst as an effective catalyst for selective oxidation of toluene

The investigation comprised an evaluation of the use of the catalyst 1%Ru/TiO2 in the liquid-phase conversion of toluene to benzyl alcohol and benzaldehyde. Transmission electron microscopy (TEM) and N2 adsorption-desorption isotherms were deployed to delineate the properties of the supported catalysts. The findings indicated a good catalytic performance by 1%Ru/TiO2 under green reaction conditions. This performance was deemed a consequence of the spread and loading of Ru on the TiO2. The reaction conditions such as temperature, reaction time, type of support, catalyst preparation method, and activating quantity) were optimized to achieve superior reaction parameters. Catalyst produced via sol-immobilization has higher activity than the one prepared with the wet-impregnation method, which lead to a transformation rate of up to 9.5%, with the selectivity for benzyl alcohol at 92%.

Ultrafine Ru nanoparticles confined in graphene-doped porous g-C3N4 for effectively boosting ammonia borane hydrolysis

Ammonia borane (AB) hydrolysis is a promising strategy for the development of hydrogen energy, and ultrafine metal nanoparticles (NPs) are attractive catalysts owing to their abundant active sites. In this work, porous graphitic carbon nitride (CN) are doped with reduced graphene oxide (rGO) and used as supports to evenly confine ultrafine Ru NPs with an adsorption-chemical reduction method. The results show that the different assembly methods and compositions affect the geometric and electronic characteristics of the composites, thus affecting the catalytic behavior in AB hydrolysis. Also, the effects of different Ru loadings and NaOH dosages are researched to improve the hydrolysis efficiency. Specifically, the optimal Ru/CN-rGO catalysts display exciting catalytic performance due to the proper porous structure, N, O co-doping and highly dispersed ultrafine Ru NPs. The corresponding turnover frequency (887.2 min−1) in the presence of NaOH (1.00 mol L−1) and the apparent activation energy (21.7 kJ mol−1) are superior to many previous results. The facile fabrication strategy and robust performance attest to a promising potential for Ru/CN-rGO in the fields of hydrogen energy.

Constructing a hollow core-shell structure of RuO2 wrapped by hierarchical porous carbon shell with Ru NPs loading for supercapacitor

Hollow core-shell structure nanomaterials have been broadly used in energy storage, catalysis, reactor, and other fields due to their unique characteristics, including the synergy between different materials, a large specific surface area, small density, large charge carrying capacity and so on. However, their synthesis processes were mostly complicated, and few researches reported one-step encapsulation of different valence states of precious metals in carbon-based materials. Hence, a novel hollow core-shell nanostructure electrode material, RuO2@Ru/HCs, with a lower mass of ruthenium to reduce costs was constructed by one-step hydrothermal method with hard template and co-assembled strategy, consisting of RuO2 core and ruthenium nanoparticles (Ru NPs) in carbon shell. The Ru NPs were uniformly assembled in the carbon layer, which not only improved the electronic conductivity but also provided more active centers to enhance the pseudocapacitance. The RuO2 core further enhanced the material's energy storage capacity. Excellent capacitance storage (318.5 F·g−1 at 0.5 A·g−1), rate performance (64.4%) from 0.5 A·g−1 to 20 A·g−1, and cycling stability (92.3% retention after 5000 cycles) were obtained by adjusting Ru loading to 0.92% (mass). It could be attributed to the wider pore size distribution in the micropores which increased the transfer of electrons and protons. The symmetrical supercapacitor device based on RuO2@Ru/HCs could successfully light up the LED lamp. Therefore, our work verified that interfacial modification of RuO2 and carbon could bring attractive insights into energy density for next-generation supercapacitors.

Synthesis of methyl glycolate via low‐temperature hydrogenation of dimethyl oxalate over an efficient and stable Ru/activated carbon catalyst

AbstractBACKGROUNDSyngas to dimethyl oxalate (DMO) followed by hydrogenation to methyl glycolate (MG) is considered to be an environmentally friendly and economical route. However, the catalyst with super performance and low cost for this route is still challenging. In this work, a simple and low‐lost fabrication method was developed to prepare a Ru/activated carbon (AC) catalyst and was used for DMO hydrogenation to MG under mild reaction conditions.RESULTSThe Ru/AC catalyst showed the best performance in the low‐temperature hydrogenation of DMO to MG compared to Ru/SiO2 and Ru/Al2O3. A series of characterization results showed that the super catalytic properties of Ru/AC catalyst might be attributed to the higher dispersion of Ru on support and its smallest nanoparticles size, weak surface acidity and electron‐deficient state of Ru species. The key parameters such as Ru loading, temperature, weight hourly space velocity, and pressure, were comprehensively investigated. MG selectivity of 94.6% with DMO conversion of 97.2% were obtained over the 4.0 Ru/AC catalyst at 90 °C. The 4.0Ru/AC catalyst showed excellent stability and there was no obvious deactivation after 1032 h test.CONCLUSIONSThe Ru/AC catalyst is effective for the DMO hydrogenation to MG under mild conditions and has great promise for industrial applications because of its low cost, simple preparation, high efficiency, and long life. © 2022 Society of Chemical Industry (SCI).

One-pot hydrolytic hydrogenation of carbohydrates to hexitols catalyzed by Ru loaded P and Si-containing hierarchical porous biochars with excellent catalytic efficiency

The one-pot hydrolytic hydrogenation of carbohydrates to sugar alcohols is one of the important value-added transformations of biomass, but the hydrolysis efficiency of carbohydrates in this one-pot conversion is still limited by the high cleavage energy of their β-1,4-glycosidic bonds and the concomitant serious side-reactions. Therefore, it is necessary to develop the new acidic carriers to improve the key first-step hydrolysis. This paper discloses that a forestry processing waste bamboo powder can be converted into the P and Si-containing porous biochar (PSBC) via inserting silica sol, impregnating concentrated phosphoric acid (H3PO4) and heating carbonization. Due to the improved porosity and strong acidity of PSBC and its affinity to β-1,4-glycosidic bonds, this new acid carrier exhibits an outstanding catalysis performance for the hydrolysis of cellulose, cellobiose, especially sucrose and inulin, affording ca. 76.2% glucose yield in cellulose hydrolysis at 150 °C. More importantly, PSBC can efficiently and uniformly load Ru nanometer particles (average size of 1.5 nm) to fabricate 1%Ru/PSBC as an excellent bifunctional catalyst for the one-pot conversion of these carbohydrates to hexitols, affording ca. 85.2% hexitols with 51.7 h−1 turnover frequency in the one-pot conversion of cellulose under 150 °C and 3 MPa H2 pressure. This work not only provides an effective strategy for the preparation of biomass-derived bifunctional catalysts, but also it opens up new voyages for the development of efficient bio-refining.Graphical abstractRu-loaded P and Si-containing porous biochar (1% Ru/PSBC) is an excellent bifunctional catalyst for the hydrolytic hydrogenation of carbohydrates under relatively mild conditions, affording ca. 85.2% hexitols with 51.7 h−1 TOF in the one-pot conversion of cellulose.

Redox-responsive phenyl-functionalized polylactide micelles for enhancing Ru complexes delivery and phototherapy

Poly(ethylene glycol)-poly(lactic acid) block copolymer (PEG-PLA) is one of the most widely used biomedical polymers in clinical drug delivery owing to its biocompatibility and biodegradability. However, endowing PEG-PLA micelles with high drug loading, self-assembly stability and fast intracellular drug release is still challenging. Redox-responsive diblock copolymers (MPEG-SS-PMLA) of poly(ethylene glycol) and phenyl-functionalized poly(lactic acid) with disulfide bond as the linker are synthesized to prepare PLA-based micelles that demonstrate excellent colloidal stability and high Ru loading. Notably, MPEG-SS-PMLA achieved a remarkably high Ru loading efficiency of 84.3% due to the existence of strong π-π stacking between phenyl and Ru complex. MPEG-SS-PMLA exhibited good colloidal stability in physiological condition but quickly destabilized by reductive tumor microenvironment. Interestingly, about 74% of Ru complex was released under 10 mmol/L GSH concentration. Ru-loaded MEPG-SS-PMLA showed efficient delivery and release of Ru complex into MCF-7 cancer cells, achieving enhanced in vitro and in vivo antitumor activity of photodynamic therapy. This feasible functionalization method of MPEG-PLA has appeared to be a clinically viable platform for controlled delivery therapeutic agents and enhanced phototherapy.

Photothermal-Catalyzing CO2 Methanation over Different-Shaped CeO2-Based Ru Nanoparticles

The Ru/CeO2 samples were prepared with loading Ru nanoparticles onto three different shapes (nanocubes, rods, and polyhedrons) of the CeO2 surface and evaluated for catalytic performances in CO2 methanation under visible light or not. It was found that the cube-like Ru/CeO2 sample (Ru/CeO2-c) exhibited a visible light-enhanced catalytic performance, but an insignificant photopromoted activity occurred on rod- or polyhedron-like Ru/CeO2 samples (Ru/CeO2-r or Ru/CeO2-p). The detailed catalytic mechanism was monitored by temperature-programmed reduction, X-ray photoelectron spectroscopy, and electron paramagnetic resonance. It was proposed that the different photoassist activities of Ru/CeO2 under illumination were caused by the different metal–support interaction forces. The strong interaction formed in Ru/CeO2-c could promote the photoexcited electrons from cube-like CeO2 to transfer onto the Ru surface, which accelerated the generation of oxygen vacancies in Ru/CeO2-c. On the contrary, a weak interaction occurred on Ru/CeO2-r and Ru/CeO2-p samples. In this case, the photoexcited electrons would hardly transfer onto the Ru surface, and no more oxygen vacancies were generated on Ru/CeO2-r and Ru/CeO2-p, resulting in a negligible photopromoted activity.

Dual-Mode Immunosensor for Electrochemiluminescence Resonance Energy Transfer and Electrochemical Detection of Rabies Virus Glycoprotein Based on Ru(bpy)32+-Loaded Dendritic Mesoporous Silica Nanoparticles.

Rabies is a serious zoonotic disease in almost all warm-blooded animals and causes fatal encephalitis. The detection of rabies virus (RABV) is critical and remains a significant challenge. Herein, an electrochemiluminescence resonance energy transfer (ECL-RET) and electrochemical (EC) dual-mode immunosensor was developed for highly sensitive detection of RABV glycoprotein. Dendritic mesoporous silica nanoparticles (DMSNs) were employed to load Ru(bpy)32+ and to obtain ECL probes (Ru@DMSNs). Ru@DMSNs were decorated on the electrode surface, followed by the modification of the RABV antibody (Ab1). RABV was specifically recognized and captured by Ab1, causing the decline of the ECL signal due to the obstruction of electron transfer. Additionally, manganese oxide nanoparticles (MnOx) modified with Ab2 can further quench the ECL signal of Ru@DMSNs via the RET between Ru@DMSNs and MnOx. Meanwhile, MnOx can catalyze the oxidation of o-phenylenediamine (o-PD), generating a significant differential pulse voltammetry (DPV) signal as a second signal to monitor RABV glycoprotein concentration. Consequently, an immunosensor was developed to achieve dual-signal detection of RABV and improve reliability. Under the optimal conditions, detection ranges of 0.10 pg·mL-1 to 10 ng·mL-1 for ECL (with an 88 fg·mL-1 detection limit) and 1 pg·mL-1 to 2 ng·mL-1 for EC (with a 0.1 pg·mL-1 detection limit) were obtained for RABV detection. The reliability of this immunoassay was validated by eight brain tissue samples. The results were found to be compatible with the results of the real-time reverse transcription-polymerase chain reaction (RT-PCR) assay, indicating the potential applicability of this method for RABV diagnosis.

Stabilizing single-atomic ruthenium by ferrous ion doped NiFe-LDH towards highly efficient and sustained water oxidation

Single-atom catalysts (SAC) possesses the potentials of developing cost-effective water splitting devices; however, the active sites tend to form high valence state and dissolve into electrolyte at the anode during long-term oxidation process, leading to severe stability issue. Herein, we anchored single atomic Ru on Fe2+ ions doped NiFe layered double hydroxides, affording a strong electronic interaction between Ru and Fe2+, which lowered the oxidation state of Ru and meanwhile enhanced the Fe-O bond strength, thus resulting in significantly improved activity and stability of both the Ru sites and NiFe-LDH substrates. With 1.32 wt% Ru loading, the Ru/NiFe2+Fe-LDH catalyst showed a low overpotential of 194 mV at 10 mA / cm2 and a small Tafel slope of 36 mV / dec, which outperformed most of the Ru and NiFe based alkaline OER catalysts reported so far. In addition, the catalyst did not show obvious performance decay and dissolution after 100 h stability test at 100 mA / cm2, attributing to the strong electronic coupling between the single atomic Ru and the NiFe2+Fe-LDH, as evidenced by the X-ray absorption spectroscopy and density function theory calculation results that Fe2+ transferred 1.54 e- to Ru.

Oxygen vacancies enriched Nb-WOX supported Ru for polychlorinated aromatics oxidation: Reaction mechanism exploration

The current catalysts for polychlorinated aromatics (PCAs) oxidation showed either poor low-temperature catalytic activity, low mineralization ability or bad stability, and developing oxygen vacancies enriched catalysts with abundant acid sites is a potential solution for the above drawbacks. Herein, oxygen vacancies enriched Nb-WOX were developed for o-DCB (o-dichlorobenzene, a PCAs model compound) oxidation, and they showed notably better low-temperature catalytic activity with T50% <350 °C than did commercial WO3 (T50% >400 °C) under the WHSV of 36000 mL g−1h−1. Nb-WOX supported Ru exhibited even lower T50% (173 °C) and T90% (238 °C), as well as high COX yield with >99% ratio of CO2 to CO and good stability (>99% conversion for 500 mins) when with 1.5 wt% Ru loading at 300 °C. The above phenomenon was attributed to the abundant oxygen vacancies and acid sites in Nb-WOX that contributed to the better redox property, stronger interaction with Ru species and the removal of accumulated chloride. The o-DCB oxidation mechanism revealed that the higher CO2 ratio to CO on Ru/Nb-WOX arose from the deep oxidation of CO byproducts. The work described here will instruct us to degrade PCAs effectively through catalysts design.

Homogenizing Li2CO3 Nucleation and Growth through High-Density Single-Atomic Ru Loading toward Reversible Li-CO2 Reaction.

The high activation barrier and sluggish kinetics of Li2CO3 decomposition impose a severe challenge on the development of a Li-CO2 battery with high Coulombic efficiency. To tackle this issue, herein we devise a novel synthetic tactic by combining electrostatic assembly with in situ polycondensation to obtain a single-atomic Ru catalyst of high density up to ∼5 wt %. When deployed to the CO2 cathode, the catalyst delivered an extraordinary capacity of 44.7 Ah g-1, an ultralow charge/discharge polarization of 0.97 V at 0.1 A g-1 (1.90 V at 2 A g-1), and a long-term cycling stability up to 367 cycles at 1 Ah g-1 (196 cycles at 2 Ah g-1), outshining most of the state-of-the-art CO2 cathode catalysts reported today. Further through extensive in situ and ex situ electroanalytical, spectroscopic, and microscopic characterizations, we attribute the superb battery performance mainly to the highly reversible Li2CO3 formation/decomposition, facilitated by the homogenized and downsized Li2CO3 nucleation and growth on account of the high density single-atomic Ru loading. This work not only offers a facile method to fabricate single-atom catalysts with high mass loading but also sheds light on promoting the reversible Li-CO2 reaction by mediating product morphology.

Hierarchical porous cobalt/carbon hybrid anchored Ru-catalyzed ammonia-borane hydrolysis for efficient H2 release

Development of hierarchical architecture composed of heteroatom-doped porous carbon and earth-abundant transition metal for anchoring of noble metal nanoparticles (NPs) is essential but challengeable to improve catalytic performance for hydrogen production from ammonia-borane (AB) hydrolysis. In this study, we report the utilization of hierarchical porous nitrogen-doped carbon nanosheets encapsulated Co (Co-NC) synthesized by sodium chloride-template method for anchoring of Ru NPs toward hydrogen production from AB hydrolysis. The achieved Ru@Co-NC with an optimal Ru loading of 1.0 wt% delivers the highest catalytic activities with turnover frequencies of 568/1131 min−1 under aqueous/alkaline conditions at 25 ℃. The high performance for AB hydrolysis can be ascribed to the abundance of surface sites, fast mass/electron transfer and the electronic metal-support interaction between ultrafine Ru NPs and Co-NC, which facilitate the oxidative cleavage of the OH bonds in attacked H2O molecules (rate-determining step). Besides, this catalyst can be easily isolated by an external magnet and exhibits relatively good reusability with high maintained activity after five cycles. This work emphasizes the utilization of magnetically hierarchical architecture as support for noble metal NPs toward catalytic hydrogen generation.

Aging study of low Ru loading dual function materials (DFM) for combined power plant effluent CO2 capture and methanation

This work addresses the stability of different Ru-based dual function materials (DFM, x% Ru, 6.1% “Na2O”/Al2O3) during cycles of CO2 capture from simulated power plant effluent (320 °C; 7.5% CO2, 15% steam, 4.5% O2, balance N2 (v/v)) and subsequent catalytic methanation. Aging studies are carried out to simulate natural gas combustion flue gas on DFM granules, tablets, and ring tablets prepared by sequentially impregnating Ru and Na2O. Stability increases with Ru loading; however, 0.5% Ru DFMs demonstrate a small but steady loss of CH4 produced per cycle consistent with deactivation of the Ru component likely due to exposure to high levels of O2 and steam in the flue gas. CO chemisorption, in-situ FT-IR, and transient microreactor studies all verify that there is loss in Ru active surface area, possibly due to sintering, which consequently results in lower methanating ability.

Bifunctional WC‐Supported RuO2 Nanoparticles for Robust Water Splitting in Acidic Media

AbstractWe report the strong catalyst–support interaction in WC‐supported RuO2 nanoparticles (RuO2‐WC NPs) anchored on carbon nanosheets with low loading of Ru (4.11 wt.%), which significantly promotes the oxygen evolution reaction activity with a η10 of 347 mV and a mass activity of 1430 A gRu−1, eight‐fold higher than that of commercial RuO2 (176 A gRu−1). Theoretical calculations demonstrate that the strong catalyst–support interaction between RuO2 and the WC support could optimize the surrounding electronic structure of Ru sites to reduce the reaction barrier. Considering the likewise excellent catalytic ability for hydrogen production, an acidic overall water splitting (OWS) electrolyzer with a good stability constructed by bifunctional RuO2‐WC NPs only requires a cell voltage of 1.66 V to afford 10 mA cm−2. The unique 0D/2D nanoarchitectures rationally combining a WC support with precious metal oxides provides a promising strategy to tradeoff the high catalytic activity and low cost for acidic OWS applications.