INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yuhang Zhao,Ruixin Tang,Mengyao Liu,Ying Li,Qiuyan Hao,Limin Liang,Hui Liu
Developing efficient and durable electrocatalysts for the oxygen evolution reaction (OER) is pivotal for sustainable hydrogen production. In this study, Ru nanoclusters were successfully anchored onto a high-entropy MoMnFeCoNiCu layered double hydroxide (HE-LDH) substrate. The resulting Ru/HE-LDH heterostructure exhibits exceptional activity, requiring an ultra-low overpotential of only 192 mV to achieve 10 mA cm −2 . Density functional theory (DFT) reveals that the Ru nanoclusters effectively modulate the electronic structure of the high-entropy matrix, optimizing intermediate adsorption energies and lowering the energy barrier for the rate-determining step. Remarkably, the catalyst demonstrates industrial-level stability, maintaining a steady potential for 400 h at near 300 mA cm −2 . Furthermore, in a practical anion-exchange membrane water electrolyzer (AEMWE), the Ru/HE-LDH achieves a current density of 1 A cm −2 at just 1.86 V with 300 h. This work provides a significant advancement in designing high-entropy heterostructures for large-scale, efficient green hydrogen production.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Hairui Cai,Nan Jiang,Laifei Xiong,Fanfan Shang,Yuyan Tang,Xiaojing Zhang,Chenyu Liang,Di Su,Shengchun Yang
Ruthenium, a promising lower-cost, high-activity alternative to iridium for acidic PEMWE oxygen evolution, requires innovative stabilization and bifunctionality enhancement strategies due to its dissolution and nanoparticle instability under OER conditions and inferior HER activity compared to platinum. Herein, a novel strategy for bifunctional acidic water electrolysis catalysts integrates Y-doped Ru nanoparticles onto CNT-decorated carbon cloth (Y–Ru/CNT/CC), yielding high activity and stability. Introducing Y atom shifts the Ru d-band center negatively, reducing excessive adsorption of oxygen-containing intermediates and improving OER stability, while optimizing the hydrogen adsorption free energy (ΔGH*) for enhanced HER activity. Furthermore, the CNT support provides a highly conductive network and abundant anchoring sites, which cooperate with Y-doping to inhibit Ru dissolution migration under acidic conditions. The catalyst exhibited excellent bifunctional activity in 0.5 M H2SO4 (HER: η10 = 27 mV; OER: η10 = 185 mV), which was significantly better than that of commercial Pt/C and RuO2. This study presents a novel approach to designing a cost-effective acidic electrolytic water catalyst, promoting the practical application of PEMWE technology.
研究领域:
电催化
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材料科学
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可再生能源
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纳米材料
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水分解
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JOURNAL OF ORGANIC CHEMISTRY
·
2021
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IF 4.354
Ming Li,Jun-Yang Tao,Liang-Neng Wang,Jia-Wei Li,Yue-Jin Liu,Ming-Hua Zeng
Modification of commercially available biaryl monophosphine ligands via ruthenium(II)-catalyzed P(III)-directed-catalyzed ortho C–H secondary alkylation is described. The use of highly ring-strained norbornene as a secondary alkylating reagent is the key to this transformation. A series of highly bulky ligands with a norbornyl group were obtained in excellent yields. The modified ligands with secondary alkyl group outperformed common substituted phosphines in the Suzuki–Miyaura cross-coupling reaction at a ppm mole level of Pd catalyst.
研究领域:
有机化学
·
催化化学
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Cell Reports Physical Science
·
2025
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IF 7.3
Mengxuan Du,Binge Huang,Songlin Xin,Liqin Wu,Xiaojun He
Multidrug-resistant bacterial pneumonia (MDR-BP), particularly involving biofilm eradication, presents therapeutic challenges. While reactive oxygen species (ROS)-mediated chemodynamic therapy offers antibacterial potential, limitations in biocatalytic performance and nanotherapeutic efficacy hinder traditional approaches. We developed nitrogen-doped ruthenium single-atom catalysts (Ru-N-SACs) as a dual-functional nanotherapeutic platform. This nanozyme exhibits peroxidase-mimicking catalytic activity, generating ROS selectively. Near-infrared laser stimulation further enhances its activity and provides photothermal disruption of biofilms. The resulting synergistic action achieves complete biofilm eradication and improves survival in pneumonia models. Comprehensive multi-omics analyses elucidated the therapeutic effectiveness and regulatory mechanisms of Ru-N-SACs against MDR-BP pathogenesis. This work demonstrates a paradigm combining catalytic ROS generation and photothermal therapy for managing deep-tissue infections. It advances the design of precision-engineered nanozymes within antimicrobial nanomedicine, addressing the critical need for innovative strategies against MDR pathogens.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
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IF 7.8
Bohan Zhang,Chang Wen,Mingtao Xu,Zhaoxi Ye,Wenshang Chen,Ben Chen,Qingsong Hua,Ke Liu,Zhengkai Tu
Proton exchange membrane water electrolysis (PEMWE) is a promising technology for sustainable hydrogen production, nevertheless it faces challenges related to the high cost and scarcity of noble metal-based anodic catalysts. Herein, we report a low-cost, high-performance acidic oxygen evolution electrocatalyst, Cr 0.66 Ru 0.34 O 2 /TiO 2 , consisting of chromium-ruthenium mixed oxides supported on a TiO 2 substrate. The catalyst was synthesized through sol-gel and hydrothermal methods, enabling controlled crystallinity and uniform dispersion. By tuning the Cr/Ru ratio, we elucidated the synergistic interaction between Cr and Ru, which modulates the electronic structure and morphological characteristics of the catalyst, thereby promoting the lattice oxygen mechanism (LOM) and enhancing catalytic activity. TiO 2 was employed as a support due to its high specific surface area and excellent chemical stability under acidic conditions, which helps stabilize oxygen vacancies and facilitates the oxygen vacancy site mechanism (OVSM), ultimately improving the catalytic stability. The optimized Cr 0.66 Ru 0.34 O 2 /TiO 2 catalyst delivers a low overpotential of 179 mV at 10 mA cm −2 in 0.5 M H 2 SO 4 and demonstrates excellent stability under constant current operation. When applied in a PEM single-cell electrolyzer, the catalyst achieves a low cell voltage of 1.633 V at 1 A cm −2 and stable operation over 180 h at 60 °C, outperforming commercial IrO 2 . These results highlight the potential of Cr-doped Ru-based oxides supported on TiO 2 as efficient and durable anode catalysts for next-generation PEM water electrolyzers with reduced noble metal usage.
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TALANTA
·
2025
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IF 6.1
Mingxia Wang,Minggang Wei,Sirui Liu,Xidian Yue,Li Wang,Feng Luan,Xuming Zhuang,Chunyuan Tian
Urokinase (UK), an enzymatic protein predominantly isolated from the urine of healthy humans , serves as a crucial biomarker for evaluating human renal function , cardiovascular diseases, and inflammatory states. In this study, a novel sandwich - type ratiometric electrochemiluminescence (ECL) biosensor was constructed to achieve accurate and sensitive detection of UK. This biosensor was constructed with titanium dioxide magnetic beads (P25) as the cathode luminophore and a terbium monophosphate - guanosine infinite coordination polymer network (Tb - GMP ICPn) encapsulating tris(4,4' - dicarboxylic acid - 2,2' - bipyridyl) ruthenium dichloride (Ru(dcbpy) 3 2+ /ICPn) as the anode luminophore. Under optimized experimental conditions, when potassium persulfate (K 2 S 2 O 8 ) and tri - n - propylamine (TPA) were separately utilized as co - reactants, a favorable linear correlation was observed between the variations in ECL intensities and the concentration of UK within the range of 10 −2 to 10 4 ng mL −1 . The limits of detection (LODs) were determined to be 7.2 and 5.8 pg mL −1 , respectively. Moreover, the application of this biosensor for the detection of UK in real - world samples yielded satisfactory results. These findings suggest that the developed ratiometric ECL biosensor holds significant promise in the realm of clinical detection and diagnosis.
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Processes
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2025
·Vol. 13
·期 8
·2594
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IF 2.8
Tao Shi,Xiaoling Huang,Zhan Zhao,Zizhen Li,Kelei Huang,Xiangchao Meng
Electrocatalytic water splitting has been demonstrated to be a highly efficient and promising technology for green hydrogen production. However, the inefficiency and instability of the cathode hinder its wide application in water electrolysis. Herein, we report a rapid Joule heating method for synthesizing the Ru-Mo oxide catalyst. Comprehensive characterization results confirmed that the as-prepared catalyst featured an internal porous structure with low crystallinity, which weakened the strength of Ru-H bonds through structural and electronic modulation. The enhanced HER performance was attributed to the incorporation of Mo4+species, which strengthened Ru-O-Mo interactions. As tested, the optimized catalyst exhibited ultralow overpotentials (25.08 mV and 120.52 mV @ 10 and 100 mA cm−2, respectively) and excellent stability (100 h @ 100 mA cm−2) in a 1 M KOH solution. Meanwhile, the as-prepared catalyst was equipped in an anion exchange membrane (AEM) alkaline water electrolyzer, which could deliver 185 mA cm−2at only 2.16 V with 100% Faradaic efficiency. This study provides a feasible strategy for constructing highly efficient low-crystallinity electrocatalysts.
研究领域:
电化学
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材料科学
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能源化学
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催化化学
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纳米材料
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ANALYTICA CHIMICA ACTA
·
2015
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IF 4.513
Zhenyu Zhou,Weiliang Guo,Linru Xu,Qian Yang,Bin Su
In this paper, we report significantly enhanced electrochemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) ( Ru ( bpy ) 3 2 + ) at indium tin oxide (ITO) electrodes modified with a thin film consisting of vertically aligned silica mesochannels (SMCs). The perpendicular SMCs allow for the effective mass transport of Ru ( bpy ) 3 2 + and its co-reactants from the solution to the underlying ITO electrode surface. Moreover, due to the ultrasmall diameter (namely 2–3 nm) and the negatively charged surface, SMCs exerted a strong electrostatic attraction to the positively charged Ru ( bpy ) 3 2 + to accelerate its mass transport, resulting in a remarkably increased ECL signal. As a model system, when using tri- n -propylamine (TPrA) as the co-reactant, the intensity of ECL generated at the SMCs-modified ITO electrode was stronger than that at a bare ITO electrode by more than two orders of magnitude (i.e., ∼107-fold increase). In this case, the amount of Ru ( bpy ) 3 2 + required for ECL-based analysis can be considerably reduced. A very low concentration of Ru ( bpy ) 3 2 + , namely 9 μM, was demonstrated to be enough for achieving the sensitive detection of TPrA, nicotine and atropine. Both photomultiplier (PMT) and charge coupled device (CCD) were used to measure the luminescence from the ECL reaction. The obtained detection limits were 0.17 nM for TPrA on the basis of the ECL intensity measurement, 72 nM for nicotine and 38 nM for atropine based on the gray value analysis of captured ECL images.
研究领域:
分析化学
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电化学
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生物传感器
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纳米材料
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分子探针
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药物检测
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CHEMOSPHERE
·
2023
·
IF 8.8
Mian Hu,Zhibing Li,Xiaotong Huang,Meiqi Chen,Zhong-Ting Hu,Suqin Tang,I-Ming Chou,Zhiyan Pan,Qi Wang,Junliang Wang
To ascertain the reaction variables on o -chloroaniline ( o -ClA) mineralization, total nitrogen (TN) removal rate, and N-species distribution, o -ClA was subjected to catalytic supercritical water oxidation (CSCWO) in a fused quartz tube reactor (FQTR). The findings demonstrated that when the temperature, reaction time, and excess oxidant were 400 °C, 90 min, and 150%, respectively, the mineralization rate of o -ClA could reach more than 95%. Moreover, potential degradation pathways of o -ClA in supercritical water oxidation (SCWO) was proposed according to the GC-MS results. TN removal rate is significantly impacted by Ru/rGO, despite the fact that its catalytic effect on the mineralization of o -ClA was not particularly noteworthy. Compared with no catalyst, the TN removal rate of o -ClA obviously increased from 44.1% to 90.3% at 400 °C, 10 wt% Ru loading, 90 min and 200% excess oxidant. In addition, N-species distribution in SCWO and CSCWO were also investigated. Results indicated that the Ru/rGO catalyst could accelerate the oxidation of ammonia-N and convert it to nitrate-N, promoting N 2 generation. Finally, the possible N transformation pathway in CSCWO of o -ClA was proposed. As a result, this work offers fundamental information about o -ClA catalytic oxidation removal in the SCWO process.
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RENEWABLE ENERGY
·
2022
·
IF 8.634
Riyang Shu,Hao Jiang,Long Xie,Xiaozhou Liu,Tao Yin,Zhipeng Tian,Chao Wang,Ying Chen
Hydrodeoxygenation (HDO) is an effective technology for the conversion of bio-oil to high quality liquid fuels, in which an active and stable catalyst is crucial to gain a high reaction efficiency. In this work, a novel bifunctional catalyst of different Ru-based biochar catalyst coupled with silicotungstic acid (HSiW) was proposed to conduct the HDO of lignin-derived phenolic compounds under mild reaction condition. Ru/C-bamboo catalyst exhibited a better HDO performance than other Ru-based biochar catalysts and commercial Ru/C catalyst. Catalyst characterizations showed that Ru/C-bamboo catalyst possessed a rich mesoporous structure of 0.06 cm 3 /g mesopore volume and 0.07 cm 3 /g micropore volume, with a large specific surface area of 209 m 2 / g. A high metal dispersion and a good hydrogen adsorption ability were achieved in Ru/C-bamboo catalyst. And Guaiacol can be completely converted to cyclohexane with 87.7% selectivity at the temperature of 140 °C. Other typical phenolic compounds were also transformed into corresponding cycloalkanes with high yields above 90% in most cases. Besides, the lignin-oil also had a great improvement on the stability and the heat value after upgradation, with an increase of hydrocarbon content from 9.7% to 31.9%. This result indicated the potential of the bifunctional catalyst in the field of lignin-oil valorization.
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Journal of Nanomaterials
·
2023
·
IF 3.791
Xiyuan Tong,Fang Fang,Zhuozhe Li,Kun Qian,Yao Xu,Yifeng E
Acetaminophen (AP) is a commonly used drug that has been detected in groundwater systems in many countries, and has received much attention from researchers in recent years due to its potential environmental impact. In this research, uniformly distributed boron nitride quantum dots (BNQDs) were prepared by a simple ultrasound-solvothermal method. Electrochemical luminescence (ECL) spectroscopy confirmed that BNQDs can act as an effective coreactant to create excellent efficiency in amplifying the ECL intensity of ruthenium-based ECL system. Based on the excited state of and the energy transfer quenching of AP oxidation products in the luminescent system, an AP concentration-quenched drug sensor was successfully constructed. For this sensor, a wide linear dynamic range and low detection limits (5.0 × 10−7−1.0 × 10−5 mol/L and 4.8 × 10−9 mol/L, respectively) were achieved. This ECL drug sensor has excellent performance in the accurate determination of AP content, relieving the stress of the previous AP detection process, and has good reproducibility and recovery in actual sample measurements.
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CATALYSIS COMMUNICATIONS
·
2023
·
IF 3.7
Xigang Du,Hongyu Liu,Mengfan Su,Yuping Tai,Bingli Pan,Ning Guo,Jun Zhang
Ru nanoparticles doped and supported by Mo oxide (Ru/Mo oxide NPs) were synthesized via an in situ co-precipitation strategy for hydrogen production via hydrolysis of ammonia borane (AB). The optimized Ru 0.9 Mo 0.1 catalyst composition exhibited a total turnover frequency (TOF) value of 514.8 mol H2 (mol Ru0.9Mo0.1 ) −1 min −1 at room temperature. Systematic characterization of the catalysts unveiled the dual role of Mo oxide in regulating the structure and catalytic performance of Ru NPs. This work provides a new approach for the design of Ru-based nanocatalysts toward hydrolysis of AB for H 2 harvest.
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