INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Dongfeng Sun,Pengpeng Qiang,Yuan Yu,Jingyun Zhang,Linyin Huang,Yanning Qu,Qingmei Su,Bingshe Xu
In this study, we meticulously prepared electrocatalysts in the form of Ru nanoclusters-decorated CoP nanowire arrays supported on carbon cloth (Ru@CoP/CC) for HER under both alkaline and acidic conditions. Ru@CoP/CC exhibited exceptional catalytic activity for hydrogen evolution, showcasing overpotentials of 48 mV and 66 mV (10 mA/cm 2 ) in acidic and alkaline media, respectively, which closes to 20% of commercial Pt/C catalysts. Moreover, they showcased outstanding durability, a crucial aspect for their practical application in hydrogen production. Furthermore, this research employed DFT computations to attain a comprehensive understanding of the electronic and structural modifications brought about by the integration of Ru nanoclusters. Ru nanoclusters could coordination environment of CoP, and then effectively accelerate the catalytic reaction. This method opens up a new way to reduce the amount of precious metals in the electrocatalyst, and is helpful to the development of high-performance HER electrocatalyst.
研究领域:
材料科学
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电化学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·4815-4824
·
IF 9.5
You Xingchao,Xu Jiawei,Zhuang Zechao,Xia Junkai,Wang Suwen,Wei Haiyan,Li Yongfu,Cai Yanjiang,Xiang Hai,Yu Bing
Developing electrocatalysts that exhibit both high activity and ammonia selectivity for nitrate reduction is a significant and demanding challenge, primarily due to the complex nature of the multiple-electron reduction process involved. An encouraging approach involves coupling highly active precious metals with transition metals to enhance catalytic performance through synergy. Here, we report a ruthenium-nickel alloy catalyst with nanosheets (Ru-Ni NSs) structure that achieves a remarkable ammonia Faradaic efficiency of approximately 95.93%, alongside a yield rate of up to 6.11 g·h −1 ·cm −2 . Moreover, the prepared Ru-Ni NSs exhibit exceptional stability during continuous nitrate reduction in a flow reactor for 100 h, maintaining a Faradaic efficiency of approximately 90% and an ammonia yield of 37.4 mg·L −1 ·h −1 using 0.05 M nitrate alkaline electrolyte. Mechanistic studies reveal that the catalytic process follows a two-step pathway, in which HONO serves as a migration intermediate. The presence of a partially oxidized Ru (002) surface enhances the adsorption of nitrate and facilitates the release of the migration intermediate by adjusting the strength of the electrostatic and covalent interactions between the adsorbate and the surface, respectively. On the other hand, the Ni (111) surface promotes the utilization of the migration intermediate and requires less energy for NH 3 desorption. This tandem process contributes to a high catalytic activity of Ru-Ni NSs towards nitrate reduction.
研究领域:
电化学
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催化
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纳米材料
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环境化学
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能量转换
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Dexiang Zhang,Fujun Lan,Xiaomei Zhou,Yu Shu,Fu Li,Qingxin Guan,Mo Qiu,Wei Li
Amino acids are widely used in various applications, its production mainly relies on the fermentation of grain crops, and the chemosynthesis method from non-grain biomass still faces the challenge of low efficiency (<50 %). Herein, Ru clusters anchored on ultrathin TiO 2 nanobelts (NBs) with abundant oxygen vacancies are fabricated and used to convert lignocellulose-derived α-hydroxy acids to α-amino acids. The Ru/TiO 2 NBs achieved up to 80 % alanine yield from lignocellulose-derived lactic acid (LA). The characterization results reveal that the TiO 2 NBs with abundant oxygen vacancies could anchor Ru clusters uniformly and enable the α-OH dehydrogenation occur spontaneously. Simultaneously, Ru clusters with appropriate particle size are beneficial for the activation of H 2 and could promote the dehydrogenation from the α-OH and α-C(sp 3 )-H of LA. Furthermore, DFT simulations also indicate that further decrease the Ru cluster size (< 1 nm) will inhibit the adsorption of α-C(sp 3 )-H on cluster surface, thereby suppressing the removal of hydrogen atoms. This research provides a green and efficient chemical catalytic conversion idea for amino acid production from non-grain biomass.
研究领域:
催化
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纳米材料
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绿色化学
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生物质转化
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Jie Wang,Liu Chen,Wen Liu,Chaozhang Huang,Daoquan Wang,Weiping Fang,Wenjing Song,Quanxing Zheng,Weikun Lai
High-value utilization of cellulosic biomass proves critical to advancing sustainable development and unlocking circular economy potential. This work reports a bifunctional zirconium phosphate (ZrP)-supported Ru catalyst (Ru/ZrP) for efficient cellulose-to-sugar alcohol conversion, delivering a 56.4% C6 sugar alcohol yield under reaction conditions of 200 °C and 3 MPa H2. The performance shows a 24-fold enhancement relative to Ru/ZrO2 (2.4% yield), with combined characterization and kinetic studies confirming that Brønsted–Lewis acid (P–OH/Zr4+) synergy governs the catalytic enhancement. Brønsted acid sites drive cellulose hydrolysis to glucose by accelerating β-1,4-glycosidic bond cleavage, while Lewis acid sites synergize with Ru sites to promote hydrogenation of glucose into sorbitol. Notably, the optimized Ru/ZrP1.4 catalyst also enabled effective disaccharide-to-sugar alcohol conversion, achieving a 54.3% C6 sugar alcohol yield using cellobiose as the substrate and maintaining stability over five cycles without any obvious deactivation. This work elucidates the critical roles of Brønsted–Lewis acid sites in mediating cellulose conversion, establishing a robust and efficient multifunctional Ru/ZrP catalyst for aqueous-phase biomass catalysis.
研究领域:
催化
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生物质转化
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绿色化学
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材料科学
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可持续发展
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Zhenjie Zheng,Jingxuan Wang,Mengqi Ma,Yunpeng Xu,Da Huang,Jian Wang,Cuiying Lin,Zhenyu Lin,Fang Luo
Sensitive and selective detection of N -nitrosodimethylamine (NDMA), a highly carcinogenic environmental contaminant, is essential for public health and safety. In this study, we have developed a homogeneous electrochemiluminescence (ECL) biosensor for ultrasensitive NDMA detection by integrating Nafion-functionalized covalent organic framework (COF) with aptamer recognition and magnetic separation. The imine-linked COF (COF-LZU1) scaffold not only enables stable encapsulation of Ru(bpy) 3 2 + , but also creates a confined microporous environment that locally concentrates c (TPrA) and enhances the generation and survival of TPrA radicals, thereby amplifying the ECL signal. Nafion further improves Ru loading and ionic conductivity. Biotinylated aptamers were initially immobilized on streptavidin-coated magnetic beads (MBs) and hybridized with complementary DNA-modified Ru@COF-LZU1 to form Ru@COF-LZU1-MBs complex. Upon NDMA binding, a conformational switch releases Ru@COF-LZU1 into the solution. After magnetic separation, the ECL signal of the supernatant is measured in the presence of TPrA. This homogeneous format avoids electrode surface modification, which is commonly required in conventional Ru@COF-LZU1-based ECL sensors, offering improved reproducibility and simplified operation. The biosensor exhibits a wide linear range (100 fg/mL - 100 ng/mL) with a low detection limit of 9.11 fg/mL. This platform offers a sensitive, reproducible, and facile strategy for monitoring NDMA and similar small-molecule contaminants in complex matrices.
研究领域:
环境监测
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分析化学
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生物传感技术
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纳米材料
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Science China-Chemistry
·
2025
·
IF 9.7
Qiu Zhuo,Dai Yiqi,Zhang Runzhi,Xiao Xin,Tong Yuqiao,Yao Lihua,Yan Dongpeng
Cost-effective metal-based electrocatalysts are desirable for industrial water and seawater electrolysis, triggering the hydrogen evolution reaction (HER) with high efficiency. Here, we report the loading of ultralow-content Ru-Os dual-atom onto NiCoP nanoneedles significantly enhancing HER in seawater splitting. The localization of 0.16% Ru and 0.58% Os atoms within NiCoP induces changes in the electronic structure and coordination environment of the Ni active sites. This catalyst achieves low overpotentials (29 and 303 mV in alkaline solution, 68 and 331 mV in alkaline seawater) at 10 and 800 mA/cm 2 , respectively, demonstrating remarkable stability by maintaining performance at 500 mA/cm 2 for 24 h in alkaline and simulated seawater. Experimental and theoretical studies indicate that ultralow content Ru and Os dual atoms are immobilized on the surface of NiCoP/NF through Ru-P and Os-P bonds, leading to electron transfer and changes in the coordination environment. These results enhance the activity of Ni active sits on support, demonstrating superior HER performance in alkaline solution and seawater. Ultralow content Ru and Os dual atoms in NiCoP@Ru-Os/NF play a crucial role in reducing the Gibbs free energy of hydrogen adsorption and lowering the d -band position of the catalyst, thereby accelerating the HER kinetic.
研究领域:
电化学
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催化
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材料科学
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能量转换
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2015
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IF 3.52
Yujing Weng,Songbai Qiu,Chenguang Wang,Lungang Chen,Zhengqiu Yuan,Mingyue Ding,Qi Zhang,Longlong Ma,Tiejun Wang
In this work, a dual-bed aqueous catalysis system with Ru/C as catalyst was proposed for the liquid alkane (pentane/hexane: C5/C6) production from acid biomass hydrolysate. The low temperature (413 K) hydrogenation of biomass-derived carbohydrates into polyols was carried out in the first fixed-bed. The high temperature (523 K) hydrodeoxygenation (HDO) of polyols into alkanes was carried out in the down-stream bed. To screen the optimal reaction conditions, glucose and sorbitol were chosen for model tests. Whereby, reactor types, solution pH value, mineral acid, reaction temperature, pressure and sorbitol concentrations were studied. A maximum C5/C6 alkane yield of 61.9% was achieved from 20 wt% sorbitol solution (pH = 1.5) under 523 K and 4 MPa H 2 pressure in the fixed-bed reactor. For cassava and corncob hydrolysate, C5/C6 alkane yield of 38.8% and 44.1% were obtained, respectively.
研究领域:
化学工程
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可再生能源
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催化
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2021
·
IF 6.986
Chen Xu,Jing Li,Shimeles Addisu Kitte,Guohua Qi,Haijuan Li,Yongdong Jin
Electrochemiluminescence (ECL) by virtue of its controllability and versatility has emerged as a significant tool in bioassay, but how to integrate it with other (nano)materials and further break the limit of sensitivity for ultrasensitive detection still possess tremendous potential. Herein, a close-packed Ru@SiO2 NP nanomembrane that serves as an enhanced substrate and luminophore enricher simultaneously was constructed by the liquid–liquid interface self-assembly method and applied for ECL-enhanced bioassay. The developed ECL electrode obtained ∼600-fold enhancement on ECL intensity compared with the bare ITO electrode and ∼21-fold enhancement compared with the SiO2 NP nanomembrane electrode due to the dramatic light scattering of the 2D SiO2 NPs and the enrichment of Ru(bpy)32+ molecules on the surface of the Ru@SiO2 NP nanomembrane electrode. Based on the fascinating Ru@SiO2 NP nanomembrane platform, we further constructed a label-free immunosensor for the detection of prostate-specific antigen (PSA). The as-fabricated Ru@SiO2-nanomembrane ECL immunosensor exhibited good stability and performed ultrasensitive detection with an utmost low detection limit of 0.169 fg·mL–1 (signal/noise = 3). Our work puts forward an effective solution benefiting for further improving ECL performance for ultrasensitive bioassays.
研究领域:
生物医学工程
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分析化学
·
纳米材料科学
✓ 已验证
DOI
高影响因子
ChemSusChem
·
2025
·
IF 6.6
Zixuan Tan,Yihong Cai,Bo Yang,Hao Huang,Haijun Guo,Min Zhuang,Hui Luo,Qingwei Meng,Shaoqu Xie
Graphical Monohydric alcohols are a potential fuel, and herein, monohydric alcohols have been selectively synthesized from multicarbon sugars by modulating the electron distribution of Ru and enhancing the hydrodeoxygenation process of biomass. Ru-based catalysts are widely used in catalytic reactions, but the electron-deficient nature promotes strong decarbonylation, leading to complete deoxygenation during the conversion of polyhydroxy biomass. Despite extensive research, effectively suppressing this decarbonylation activity remains challenging. Herein, electron-rich Ru and electron-deficient Ni formed due to the electron migration of Ni → Ru have a synergistic catalytic effect, controlling the precise cleavage of C N bonds by Ru 0 and retaining most of the C O bonds. The amorphous Al 2 O 3 is sufficiently bound to the substrate to promote rapid hydrogenation. This modification effectively suppresses the intrinsic decarbonylation activity of Ru and improves selectivity for hydrodeoxygenation. Using carbohydrates as substrates, the Ru–Ni bimetallic catalysts preferentially promote the hydrodeoxygenation pathway, resulting in a significant increase in C3+ monohydric alcohol yields. This work presents a new strategy for modulating reaction pathways via electronic structure engineering, offering valuable insights into the potential of Ru–Ni systems for biomass conversion and sustainable alcohol synthesis.
研究领域:
催化化学
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材料科学
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化学工程
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生物质转化
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可持续化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LUMINESCENCE
·
2025
·Vol. 40
·期 1
·e70073
·
IF 3
Xuhui Zhang,Yafei Chen,Jun Ling,Jianping Li
It is of great significance to develop sensors for trace pesticide residues detection in food. Herein, an electrochemiluminescence (ECL) sensor with high sensitivity for the detection of methyl parathion (MP) was constructed by combining of the acetylcholinesterase (AChE) enzyme-inhibited reaction with tris-2,2′-bipyridyl ruthenium Ru(bpy) 3 2+ -triethylamine (TEA) system for the first time. A new ECL probe of MIL-100 loaded with Ru(bpy) 3 2+ (Ru-MIL-100) was synthesized, and then Ru-MIL-100 and AChE were immobilized on the electrode with Nafion. Triethylamine was used as a coreactant to form a Ru-MIL-100–TEA luminescence system. The hydrolysis of iodinated acetylthiocholine by AChE to generate acetic acid that consumes TEA, leading to the quenching of ECL of the Ru-MIL-100–TEA system. But MP can inhibit the activity of AChE, which leads to the decrease of the generated acetic acid and the enhancement of ECL. With the increase of the MP concentration, the ECL intensity increases. Due to the high catalytic activity of the AChE and the excellent ECL luminescence performance of the Ru-MIL-100 probe, the sensor is highly sensitive. The detection concentration range of MP was 1.0 × 10 −12 –1.0 × 10 −9 mol/L, and the detection limit was 2.07 × 10 −13 mol/L. The biosensor was applied to the determination of MP in vegetable samples.
研究领域:
分析化学
·
环境科学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 24
·11337-11345
·
IF 9.931
Wei-Ming Liao,Jian-Hua Zhang,Zheng Wang,Shao-Yun Yin,Mei Pan,Hai-Ping Wang,Cheng-Yong Su
Electron-deficient Ru/Rh half-sandwich units are optoelectronical, stereochemical, and redox and catalytically active in nature. Four different species of these units were designed and successfully incorporated into UiO-67 frameworks by post-synthetic exchange (PSE) method and employed for photocatalytic H2 evolution and CO2 reduction. Among them, the PSE-MOF catalysts containing [M–OH2] (M = Rh or Ru) groups show higher photocatalytic activity than those with [M–Cl], providing a new example of the exploitation of H2O molecules as small ancillary ligands for the construction of Ru/Rh half-sandwich units and subsequent incorporation into MOFs as photocatalytic centers. The application of TEOA (triethanolamine) and DMA (N,N-dimethylaniline) as sacrificial agents leads to different catalytic mechanisms and durations. A long-term hydrogen evolution lasting for 174 h without significant decrease in efficiency was achieved in the RhOH2@UiO-DMA system, showing the advantage of PSE-MOFs as highly stable photocatalytic platforms with superior self-protective properties.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 192
·期 1
·1-12
·
IF 5.3
Liu Xiang,Li Huijun,Sun Junjun,Shi Jianchao,Xu Zhouqing,Wang Yan
A HPU-23@Ru@Tb-NH 2 sensor array with light-driven oxidase-mimicking activity and triple-emission fluorescence was developed. It was composed of a Tb 3+ -functionalized metal organic framework and Ru(bpy) 3 2+ and applied to the simultaneous detection of Hg 2+ , ClO − , and PO 4 3− via differently responsive channels. HPU-23@Ru@Tb-NH 2 had a photoresponsive colorimetric response toward Hg 2+ with a LOD as low as 4.18 nM. In addition, the three emissions of the HPU-23@Ru@Tb-NH 2 sensor array were influenced by ClO − and PO 4 3− to varying degrees, causing remarkably distinguishable responses for the fluorescence channels to discriminate ClO − and PO 4 3− from each other. The detection limits of ClO − and PO 4 3− were 12.26 µM and 0.197 nM, respectively. Therefore, this work demonstrates the feasibility of multi-emission and multi-mode sensing platform, which is able to combine the advantages of different strategies for solving the problems of various toxic substances coexisting in the environment while meeting the needs of accurate and precise results and no side interferences. Graphical
研究领域:
分析化学
·
环境科学
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）