JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xiang Li,Kelei Huang,Xiangchao Meng
The design of efficient electrocatalysts for hydrogen evolution reaction (HER) suitable for industrial applications remains a challenging task. In this work, Ru clusters were loaded onto WO 3 which were grown on carbon nanotubes (WRu/C-JH) using a rapid Joule heating method. The crystal phases of WO 3 was transformed, and abundant active sites were exposed during the rapid heating and cooling process. All these modifications contributed to the greatly improved electrocatalytic activity in HER. As tested, in 1 M KOH, it only required an overpotential of 22 mV to reach 10 mA cm −2 and 401 mV to reach a high current density of 1 A cm −2 on WRu/C-JH. Moreover, WRu/C-JH demonstrated excellent stability at 500 mA cm −2 for 100 h. Furthermore, a two-electrode system was constructed to assess overall water splitting performance of WRu/C-JH. This system was capable of reaching 100 mA cm −2 at a low voltage of 1.94 V. The mechanism of the enhancement in HER for as-prepared sample was also deeply discussed.
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高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 10
·5858-5865
·
IF 10.7
Mengmeng Wang,Yunmei Du,Shuangshuang Li,Yuanxiang Gu,Lei Wang
Ru dopants enhanced electrocatalytic performance by optimizing the electronic configuration, but how to efficiently dope Ru and introduce strain effect is a challenge. In this work, Vb12 is used to introduce the CN layer into phosphides and effectively increase the doping amount of Ru. Notably, Ru dopants induce Ni2P to produce a tensile strain of 0.172%, effectively optimizing the electronic configuration of Ru-Ni2P. Obviously, Ni with more positive charges acts as the UOR active site, and the optimized Ru acts as the HER active site, synergistically promoting urea-assisted total water decomposition. Surprisingly, the Ru-Ni2P@CN catalyst only required a potential of 1.412 V to drive 1 A cm−2 for urea-assisted water splitting. With the help of Vb12, abundant Ru dopants, and tensile strain were successfully introduced into the phosphide electrode, which provided a new idea for optimizing the performance of the phosphide electrode.
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高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Tianxu Su,Bin Guan,Chunzheng Zheng,Jiefei Zhou,Zhen Huang
Developing low-temperature, high-efficiency ammonia decomposition catalysts for hydrogen production is essential for the broad application of hydrogen. This study conducted a systematic investigation of Ru/MgO catalysts modified with different alkali metals (Na, K, Cs), unveiling the impact of these modifications on catalyst performance and developing a highly efficient low-temperature ammonia decomposition catalyst. The addition of all alkali metals enhances the catalytic performance of Ru/MgO for ammonia decomposition, especially the addition of K, which results in the optimal enhancement of the catalyst, achieving a 75% ammonia decomposition efficiency at 350 °C (GHSV= 2,000 mL/h·gcat), more than doubling the performance of the unmodified Ru/MgO catalyst. The study revealed that the addition of potassium (K) altered the rate-determining step of the ammonia decomposition reaction from nitrogen recombination to the dissociation of the first hydrogen atom, and reduced the overall energy barrier required for the reaction. This facilitated the desorption of nitrogen from the Ru surface and the conversion of NH3, thereby accelerating the rate of the ammonia decomposition reaction.
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高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Jinyu Deng,Qinghua Fan,Liang Liu,Hong Cui,Jiantie Xu
Heteroatom-doped carbon materials and their composites have attracted great interest as efficient electrocatalysts for high-performance electrochemical water splitting. Herein, a series of nitrogen- and boron-codoped graphene nanoplatelets ((B, N)x-GnPs1–x (x = 0, 0.2, 0.5, and 0.8)) and their ruthenium composites (Ruy@((B, N)0.5-GnPs0.5)1–y (y = 0, 0.05, 0.1, 0.2, and 0.4)) were synthesized as highly efficient bifunctional electrocatalysts for overall water splitting. (B, N)x-GnPs1–x were prepared by a ball-milling approach followed by the activation of H2O, while Ruy@((B, N)0.5-GnPs0.5)1–y were synthesized by a simple self-assembly approach. The optimal composite, Ru0.1@((B, N)0.5-GnPs0.5)0.9, demonstrates excellent activity in 1 M KOH, requiring low overpotentials of 55 (HER) and 297 mV (OER) at 10 mA cm–2, along with low Tafel slopes and good stability. When employed as both the anode and cathode in a full water electrolyzer, it achieves a low cell voltage of 1.753 V at 10 mA cm–2 and maintains stable operation for over 65 h.
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高影响因子
MICROCHIMICA ACTA
·
2020
·Vol. 187
·期 4
·1-8
·
IF 6.232
Li Jingxian,Shan Xueling,Jiang Ding,Wang Wenchang,Chen Zhidong
Ultrasensitive and selective determination of bisphenol A (BPA) was achieved by a solid-state electrochemiluminescence (ECL) aptasensor. The Ti-based MOFs (MIL-125, MIL stands for Materials of Institute Lavoisier) have porous structure and large specific surface area. They were used as a carrier for Ru(bpy) 3 2+ by a hydrothermal synthesis method. The Ru(bpy) 3 2+ encapsulated MIL-125 (Ru(bpy) 3 2+ @MIL-125) was dropped on a glass carbon electrode (GCE) and used as working electrode. After that, the thiol-based aptamer of BPA was used to modify the working electrode by Ti–S bond. As a result of the specific binding affinity between aptamer and BPA, the ECL signal was significantly quenched. Thus, a selective electrochemiluminescence (ECL) aptasensor for BPA was developed. The ECL aptasensor based on Ru(bpy) 3 2+ @MIL-125 has a good ECL response toward detecting BPA. Under optimal conditions, the aptasensor can detect BPA in a wide linear range from 1.0 × 10 −12 to 1.0 × 10 −6 M with an excellent determination limit of 6.1 × 10 −13 M (S/ N = 3). The ECL aptasensor can selectively detect BPA in a mixture containing BPA interference compounds.
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PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Zhipeng Li,Shuo Wu,Guizheng Zou
Discriminating the electrochemiluminescence (ECL) of differed luminophores is crucial for ECL multiplexing. However, because of the limited potential window for ECL assay and the overlapped triggering-potential-range between different luminophores, the potential-resolved ECL multiplexing with good resolutions ( R s ) is still a great challenge. Herein, a single anodic ECL from two luminophores in the aqueous solution was discriminated completely (baseline separation, R s ≥ 1.5) in a potential-resolved way with the water-soluble CuInS 2 @ZnS ( [email protected] ) nanocrystals (NCs) and [Ru(bpy) 2 (dcbpy)] 2+ as luminophores and N 2 H 4 as the co-reactant. N 2 H 4 could be electrochemically oxidized to reducing radicals and then reacted with the electrochemically oxidized [email protected] NCs and [Ru(bpy) 2 (dcbpy)] 2+ in sequence to produce co-reactant ECL. The potential-resolved ECL of [email protected] NCs/N 2 H 4 and [Ru(bpy) 2 (dcbpy)] 2+ /N 2 H 4 could be well defined and distinguished from each other upon potential scanning ( R s = 2.60) and utilized for simultaneously determining human prostate specific antigen and carcinoma antigen 125 at the pathological cut-off concentration ( R s = 1.56).
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高影响因子
Journal of Nanomaterials
·
2015
·
IF 1.644
Tong Liu,Qingtao Wang,Bingzheng Yan,Mei Zhao,Wenbo Li,Haiyan Bie
Highly dispersed crystalline Ru nanoparticles (NPs) were successfully immobilized inside the pores of MIL-101 by a double solvents method (DSM). HRTEM clearly demonstrated the uniform distribution of the ultrafine Ru NPs throughout the interior cavities of MIL-101. The synthesized Ru@MIL-101 catalyst was also characterized by X-ray diffraction (XRD), N2 adsorption desorption, and ICP-AES. The catalytic test indicated that the Ru NPs supported MIL-101 material exhibited exceedingly high activity and excellent durability for hydrogen generation from the catalytic hydrolysis of amine boranes.
研究领域:
材料科学
·
催化化学
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高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Gao Wenran,Wang Ke,Wu Yishuang,Zhu Xun,Wu Yinlong,Zhang Shoujun,Li Bin,Huang Yong,Zhang Shu,Zhang Hong
Doping of heteroatoms into carbon materials is a popular method to modify their physicochemical structures and has been widely used in the fields of energy conversion and storage. This study aims to investigate the effect of doping atmosphere on the catalytic performance of nitrogen and sulfur co-doped biochar supported Ru in the production of phenolic monomers from lignin hydrogenolysis. The results showed that the catalyst prepared under CO2 atmosphere (Ru@CNS-CO2) was able to produce phenolic monomers from corncob lignin with a yield up to 36.41 wt%, which was significantly higher than that from the run over N2-prepared catalyst (Ru@CNS-N2). The characterization of the catalysts demonstrated that the CNS-CO2 support had a larger specific surface area, richer C=S and C-S groups, and higher oxygen content than CNS-N2, resulting in finer Ru particles and more Ru0 content on the CNS-CO2 support. The Ru@CNS-CO2 catalyst exhibited high activity in hydrogenation and fragmentation of β-O-4 linkages.
研究领域:
催化化学
·
能源材料科学
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PubMed
高影响因子
JOURNAL OF MEDICINAL CHEMISTRY
·
2024
·
IF 6.8
Xinlin Lin,Mengsi Zheng,Kai Xiong,Fa Wang,Yu Chen,Liangnian Ji,Hui Chao
Using photodynamic therapy (PDT) to trigger nonconventional cell death pathways has provided a new scheme for highly efficient and non-side effects to drug-resistant cancer therapies. Nonetheless, the unclear targets of available photosensitizers leave the manner of PDT-induced tumor cell death relatively unpredictable. Herein, we developed a novel Ru(II)-based photosensitizer, Ru-Poma. Possessing the E3 ubiquitin ligase CRBN-targeting moiety and high singlet oxygen yield of 0.96, Ru-Poma was demonstrated to specifically photodegrade endogenous CRBN, increase lipid peroxide, downregulate GPX4 and GAPDH expression, and consequently induce ferroptosis in cisplatin-resistant cancerous cells. Furthermore, with the deep penetration of two-photon excitation, Ru-Poma achieved drug-resistant circumvention in a 3D tumor cell model. Thus, we describe the first sample of the CRBN-targeting Ru(II) complex active in PDT.
研究领域:
癌症治疗
·
光化学
·
细胞生物学
·
分子生物学
·
药物化学
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DOI
高影响因子
RSC Advances
·
2015
·Vol. 6
·期 4
·3235-3242
·
IF 3.84
Jun Hu,Yue Ding,Haidong Zhang,Peng Wu,Xiaohong Li
At near ambient temperature, Ru nanoparticles entrapped in ordered mesoporous carbons (OMCs) CMK-3 show superior efficiency in the green reduction process of nitrobenzene and its derivatives with hydrazine monohydrate as a hydrogen donor using water as solvent. The Ru/CMK-3 catalyst exhibited much higher activity than a commercial Ru/C catalyst purchased from Alfa Aesar toward the reduction of nitrobenzene with hydrazine monohydrate under the same conditions. The interaction of Ru nanoparticles with CMK-3 and the mesoporous structure of CMK-3 OMCs might play important roles in determining the catalytic performance of the Ru/CMK-3 catalyst. In addition, the catalytic performance of the Ru/CMK-3 catalyst for the reduction of nitrobenzene was also compared using different hydrogen sources. Hydrazine monohydrate was found to be suitable as a hydrogen donor for the reduction of nitrobenzene and its derivatives. Compared with those obtained in the reduction of nitrobenzenes using 4.0 MPa hydrogen, the catalytic activity of the Ru/CMK-3 catalyst obtained using hydrazine monohydrate as hydrogen donor was much higher in most cases.
研究领域:
催化化学
·
材料化学
·
绿色化学
·
纳米材料
·
有机合成
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高影响因子
CARBOHYDRATE RESEARCH
·
2011
·Vol. 346
·期 11
·1327-1332
·
IF 1.898
Jun Zhang,Lu Lin,Junhua Zhang,Jianbin Shi
Ru/MCM-41 catalyst prepared by an impregnation–formaldehyde reduction method showed higher catalytic activity and sorbitol selectivity than other catalysts in the hydrogenation of glucose. SEM and XRD indicated the partial surface properties of Ru/MCM-41. Moreover, Ru dispersion and Ru surface area of Ru/MCM-41 were determined by pulse chemisorption, and the result further proved that Ru/MCM-41 had higher catalytic activity. A catalyst recycling experiment demonstrated that Ru/MCM-41 was a better catalyst and it could be reused three or four times. A speculated mechanism was proposed to illustrate the detailed process of d -glucose hydrogenation to produce sorbitol.
研究领域:
催化化学
·
化学工程
·
绿色化学
·
材料科学
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DOI
高影响因子
Journal of Physical Chemistry C
·
2015
·
IF 4.772
Wenjing Lian,Xue Yu,Lei Wang,Hongyun Liu
A series of biomacromolecular logic gates and functional devices with cyclic voltammetric (CV) and electrochemiluminescence (ECL) responses as output signals were established on the basis of molecularly imprinted polymer (MIP) film electrodes. The MIP films were electropolymerized on the surface of Au electrodes with o-phenylenediamine (OPD) as the monomer and chloramphenicol (CP) as the template molecule. The simultaneous CV and ECL signals of Ru(bpy)32+ were significantly enhanced by the addition of natural DNA in solution at the MIP film electrodes after CP removal. The CV and ECL responses of the Ru(bpy)32+–DNA system at the MIP film electrodes were greatly influenced by CP removal and rebinding. Moreover, the addition of ferrocene methanol (FcMeOH) to the solution led to substantial quenching of the ECL signal and produced a new CV peak pair. On the basis of these results, 3-input/3-output and 3-input/5-output biomacromolecular logic gate systems were established with DNA, CP, and FcMeOH as inputs and the ECL responses at different levels or CV responses at different potentials as outputs. After an elaborate reconfiguration of inputs and outputs, the functional non-Boolean logic devices such as a 2-to-1 encoder, a 1-to-2 decoder, and a 1-to-2 demultiplexer were also constructed on the same platform.
研究领域:
电分析化学
·
生物传感器
·
分子电子学
·
生物纳米技术
·
化学逻辑器件
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高影响因子
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