RSC Advances
·
2016
·Vol. 6
·期 102
·99842-99850
·
IF 3.289
Kun Zhang,Xu Zhang,Tianwei Tan
In this study, the conversion from Botryococcus braunii liquid to bio-jet fuel via a Ru/CeO2 catalyst was conducted. At first, novel Ru/CeO2 catalysts were prepared in order to increase the catalytic activity. “Ru/CeO2-alcohol thermal” showed the highest activity: the squalane conversion exceeded 90%, an increase of about 22% in comparison with “Ru/CeO2-impregnation”. When the B. braunii liquid was used as the raw material, no obvious catalytic activity was noticed. Therefore, the influence of impurities in the B. braunii liquid on the Ru/CeO2 reaction were preliminarily analysed, confirming that the pigments (such as β-carotenoid) and the oxygen compounds (such as fatty acids) were the main factors influencing the Ru/CeO2 reaction. Based on these results, the reaction process was optimized: prolonging the reaction time and pretreating the B. braunii liquid with H2. Finally, the production of bio-jet fuel over Ru/CeO2 was successfully achieved.
研究领域:
生物技术
·
催化化学
·
可再生能源
✓ 已验证
DOI
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2015
·Vol. 88
·期 7
·1207-1218
·
IF 0.276
Yue Chuan-Jun,Gu Li-Ping,Zhuang Ya-Feng,Liu Bao-Liang
A new strategy was introduced for the catalytic resolution of 1,2-propanediol involving the successive oxidative kinetic resolution and asymmetric hydrogenation by two hydrogen transfer reactions catalyzed by nano SiO 2 -bonded Ru-TsDPEN [TsDPEN = N -( p -toluenesulfonyl)-1,2-diphenylethylene diamine]-derived catalysts composed of two opposite configurations. The catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetry-derivative thermogravimetry (TG-DTG) analysis, and inductively coupled plasma atomic emission spectrometry (ICP-AES). Results showed that Ru-TsDPEN derived catalysts were successfully grafted on the nano SiO 2 , affording high catalytic conversions of >99 and 99%, selectivities of 47 and 98% and maximum ee values of >99 and >99% in the two reactions, which were due to the nano SiO 2 with Ru-TsDPEN in the reaction system with high dispersion. Additionally, the catalysts exhibited excellent durability and were filtered and reused at least five times without noticeable catalysts deactivations.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Yang Shi,Pei Liu,Zhenluo Yuan,Xiaojiao Wang,Qiuming Peng,Shumin Han,Yanping Fan,Baozhong Liu
The exploitation of high-performance catalysts is essential for practical application of hydrogen production technology by ammonia borane (AB) hydrolysis. In this work, we reported an uncomplicated approach to exploit high-performance catalysts for hydrogen production from AB hydrolysis. Using the reducibility of AB, the Ru 0 /Mo 2 C MXene catalyst was synthesized using Mo 2 C MXene as carrier to hydrogen production from AB hydrolysis. The combination of Mo 2 C MXene and Ru nanoparticles exhibited remarkable catalytic performance. The TOF value was 868.6 min −1 and the hydrogen production rate reached as high as 210,464 mL min −1 g Ru −1 at 298 K. Moreover, the Ru 0 /Mo 2 C MXene catalyst showed good durability and continuously produce hydrogen for more than 4 h with a turnover number (TON) of 41293. Characterization analysis revealed that Mo 2 C MXene regulated the coordination environment of Ru, forming electron-rich Mo 2 C MXene and electron-deficient Ru sites. And excellent catalytic activity is benefiting from the enhanced interaction between Mo 2 C MXene and Ru nanoparticles, promoting the effective activation and dissociation of the reactants, which resulted in the improvement of the performance of AB hydrolysis. This work offers an innovative approach to synthesize efficient AB hydrolysis catalysts for hydrogen production.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Mingrui Wei,Shuo Huang,Yun Wang,Yihui Liu,Yunfei He,Chao Wang,Lan Yang
Ru-doped Co 3 O 4 (Ru x Co 3-x O 4 , 0.1 ≤ x ≤ 0.3) catalysts are prepared by co-precipitation method. The prepared powders are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), transmission electron microscope (TEM), inductively coupled plasma-optical emission spectrometry (ICP-OES), Brunauer-Emmett-Teller (BET) test and X-ray photoelectron spectroscopy (XPS). These characterization methods confirm that the crystal structure of Ru x Co 3-x O 4 is consistent with that of Co 3 O 4 , and the catalyst powders are in the form of nanoparticles with an average particle diameter of about 20 nm. The electrochemical performances of the catalysts are evaluated by cyclic voltammograms and linear sweep voltammograms in 0.1 M KOH solution. When x = 0.2, Ru x Co 3-x O 4 shows the best electrochemical performances with the onset potential (E onset ) at 0.88 V, the half-wave potential (E 1/2 ) at 0.77 V and the limited current density at 4.41 mA cm −2 . The oxygen reduction reaction for Ru x Co 3-x O 4 mainly follows four-electron pathway with the electron transfer number at about 3.5. Furthermore, Ru 0.2 Co 2.8 O 4 has greater stability and anti-methanol property than Pt/C. These results revealed that Ru x Co 3-x O 4 is an oxygen reduction catalyst with high performance and low cost.
研究领域:
材料科学
·
电化学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2021
·Vol. 146
·期 16
·5198-5203
·
IF 4.616
Shimeles Addisu Kitte,Fuad Abduro Bushira,Haijuan Li,Yongdong Jin
Thioacetamide (TAA) is a well-known hepatotoxic substance, so it is important to determine its presence and content in food and environmental samples. Herein, we report a highly sensitive determination method for TAA based on the electrochemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) for the first time by using TAA as a new coreactant for Ru(bpy)32+ ECL via an anodic route. The developed Ru(bpy)32+–TAA ECL system allows the determination of TAA with a good dynamic linear range and low limit of detection (LOD) of 0.1 μM to 1000 μM and 0.035 μM (3σ/m), respectively. In addition, the established ECL system can be applied to detect TAA in fruit juice and waste water samples with outstanding recoveries.
研究领域:
分析化学
·
环境科学
·
毒理学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Jing Wang,Tingting Li,Haigang Li,Gongke Li,Shixin Wu,Liansheng Ling
AuNPs-DNA probes remain a challenge to recognize the double-stranded DNA (dsDNA) from routine PCR product despite its success in the recognition of the single-stranded (ssDNA) DNA of asymmetry-PCR product. Here, a universal colorimetric PCR biosensor is established with oligonucleotide modified AuNPs by recognizing the dsDNA of PCR product based on triplex DNA formation with the assistance of a triplex DNA intercalator Ru(phen) 2 dppx 2+ . The strategy was applied to detect different length dsDNA, including short dsDNA 1 (49 bp) and long dsDNA 2 (321 bp), both of which had the good linear relationship between the absorbance and the logarithm of the concentration of the targets. Moreover, the limit of detection (LOD) for short and long length dsDNA was 0.5 pM and 0.05 fg, lower than those of the previously reported methods, respectively. This strategy also displayed high selectivity against dsDNA 1 and dsDNA 2. These results demonstrate a potential strategy to detect all length of dsDNA, providing new opportunities in the life science, diagnosis, and medicine.
研究领域:
生物化学
·
分子诊断
·
纳米医学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Chen Jiadong,Chen Chunhong,Qin Minkai,Li Ben,Lin Binbin,Mao Qing,Yang Hongbin,Liu Bin,Wang Yong
Noble metal electrocatalysts (e.g., Pt, Ru, etc.) suffer from sluggish kinetics of water dissociation for the electrochemical reduction of water to molecular hydrogen in alkaline and neutral pH environments. Herein, we found that an integration of Ru nanoparticles (NPs) on oxygen-deficient WO 3-x manifested a 24.0-fold increase in hydrogen evolution reaction (HER) activity compared with commercial Ru/C electrocatalyst in neutral electrolyte. Oxygen-deficient WO 3-x is shown to possess large capacity for storing protons, which could be transferred to the Ru NPs under cathodic potential. This significantly increases the hydrogen coverage on the surface of Ru NPs in HER and thus changes the rate-determining step of HER on Ru from water dissociation to hydrogen recombination.
研究领域:
电化学
·
材料科学
·
催化
·
能源材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2024
·
IF 2.1
Haijiao Jia,Yuchen Cui,Xiaoqian Yuan,Yanmei Xu,Youxin Li
A kind of magnetic hybrid organic-inorganic nanoparticles containing Ru metal (Fe 3 O 4 @SiO 2 -FPBA-Ru) was prepared. It was spherical with the characteristic lattice fringe of ruthenium atom. The size was in the range of 5–15 nm and it contained 0.30 mmol/g Ru. Its saturation magnetization value was 15.95 emu/g, which could be easily and efficiently recovered from solution through an external magnet. It was also stable below 240°C and hot filtration experiment proved Ru wasn't leaked from Fe 3 O 4 @SiO 2 -FPBA-Ru in 70°C oxidation reaction. It could be recovered and reused at least 7 cycles. The low amount of Fe 3 O 4 @SiO 2 -FPBA-Ru (75 mmol%) could convert the 99 % of 1-phenylethanol to acetophenone under solvent-free system, which verified its green and environment-friendly properties. The yield was exceed that of homogeneous (RuCl 3 , 85 %). Beside this, the TON (5181), TOF (7430 h −1 ) in oxidation of 1-phenylethanol and high conversion yields for a series of oxidation reactions of aromatic secondary alcohols proved the high catalytic ability of Fe 3 O 4 @SiO 2 -FPBA-Ru. These laid a foundation for its industrial applications.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2022
·
IF 1.193
Lei CHEN,Yu ZHANG,Bin SUN,Juan HE,Shuai KANG,Zhong-Qiu HUA,Chen TIAN
The production of a large number of metal oxide semiconductor materials is more for design needs, while theoretical exploration is relatively less concerned. In this work, WO 3 nanoparticles were prepared by the tungstic acid thermolysis method, and the catalysts of Pt and Ru were loaded on the surface of nanoparticles with a wet impregnation method. As expected, the sensitive responses were enhanced significantly with the additional loading of Pt, which revealed that bimetallic loading could achieve better properties with a smaller loaded amount than single metal. According to the power-law response to oxygen and H 2 -TPR results, the sensitization mechanism of noble metals loaded WO 3 to acetone as the typical VOCs was investigated. The results showed that the sensing processes were dominated by oxygen adsorption behavior and there was no difference with the loading of Ru. Furthermore, the power-law coefficient n became smaller with Pt loading. It is proposed that oxygen adsorbates on the surface become more active due to Pt. We would like to propose further a perspective, i.e., polymetallic loading that utilizes the properties of different metals to achieve synergism.
研究领域:
材料科学
·
传感器技术
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS COMMUNICATIONS
·
2023
·
IF 3.7
Shengzhe Wang,Hongxia Lv,Chengyu Jin,Yu Wang,Huangzhao Wei,Chenglin Sun,Lian Yu,Lei Ma,Xiangnan Li,Xiaowei Liu
We synthesized a series of Ru-Ti-Ni/CNT electrodes to degrade levofloxacin in wastewater. The unique structure of Ni single-atom-kernelled Ru nanoparticles regulates the reaction process, producing a notable synergistic effect. The reaction kinetics constant of Ru-Ti-Ni/CNT with a Ru: Ti ratio of 10:0 outperforms Ni/CNT by 3.7 times and CNT alone by 16.4 times. Comprehensive characterizations revealed its morphology and structure nature. Ru nanoparticles can shield Ni, while Ni single-atom facilitates electron transfer in Ru nanoparticles, generating abundant reactive oxygen radicals (ROS) that degrade pollutants.
研究领域:
环境科学
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2021
·
IF 7.92
Xiaohui Yu,Lingyun Dai,Jiguang Deng,Yuxi Liu,Lin Jing,Xing Zhang,Xiyun Jiang,Zhiquan Hou,Jia Wang,Hongxing Dai
SnO 2 is widely used in catalysis owing to its oxygen vacancies, reducible oxygen species, and acidity. In this work, Ru nanoparticles (NPs) supported on three-dimensionally ordered macroporous (3DOM) SnO 2 ( x Ru/3DOM SnO 2 , Ru loading ( x ) = 0.09–1.65 wt%) were fabricated via the polyvinyl alcohol-protected reduction routes, and their catalytic activities were determined for trichloroethylene (TCE) and/or toluene oxidation. It was shown that the 0.98Ru/3DOM SnO 2 sample exhibited the best activity and good thermal stability, with the temperature ( T 90% ) and apparent activation energy at a TCE (1000 ppmv) conversion of 90% being 300 °C and 44 kJ/mol at space velocity = 40,000 mL/(g h), respectively. Trichloromethane, carbon tetrachloride, tetrachloroethylene, and trichloroacetaldehyde hydrate were the main intermediates in TCE oxidation. The high catalytic performance of 0.98Ru/3DOM SnO 2 was attributed to the presence of hydroxyl groups adsorbed at the oxygen vacancies, strong O 2 adsorption ability, good low-temperature reducibility, and strong interaction between Ru NPs and 3DOM SnO 2 . In addition, a catalytic mechanism over x Ru/3DOM SnO 2 was proposed under dry and humid conditions. The introduction of H 2 O could block some of the reaction pathways from inhibiting the production of C 2 Cl 4 , reduce formation of some by-products (e.g., CH 2 Cl 2 , CH 3 COOH, and C 2 H 2 Cl 2 ), promote removal of the chlorine species, and generate a greater amount of HCl and a smaller amount of Cl 2 . Furthermore, introducing toluene into the TCE stream could generate smaller amounts of organic chlorine by-products and greater amounts of inorganic chlorine products (HCl and Cl 2 ). We are sure that this work can provide a guideline for the industrial application of supported Ru catalysts in the removal of Cl-containing volatile organic compounds.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Pengyang Jiang,Baoxin Ge,Jiaqing Liu,Caijin Huang,Xue Feng Lu
Urea oxidation reaction (UOR) kinetics is severely limited by suboptimal intermediate adsorption, which can be significantly improved by modulating catalyst spin configurations. Herein, we report an effective strategy for reforming the Ru spin configuration in pyrochlore oxide Y 2 Ru 2 O 7 (YRO) to enhance UOR performance through gradient orbital coupling. By partially substituting Y with Sm, we precisely regulate the electronic structure of candidate Y 1.9 Sm 0.1 Ru 2 O 7 (YRO-Sm), transforming Ru spin configuration from the low spin to the high spin (HS) configuration. The HS configuration endows YRO-Sm with excellent UOR activity (1.43 V at j = 100 mA cm −2 ) and robust stability. Theoretical analysis reveals that Sm substitution leads to a significant Sm(4 f)–O(2p)–Ru(4d) orbital electron coupling effect. The highly degenerate 4 f orbitals of Sm enhance Ru–O covalency and Ru electron localization in YRO-Sm, facilitating *COO intermediate dissociation and thereby lowering the energy barrier for UOR. The practical potential of YRO-Sm was further demonstrated through its successful integration into both a hybrid water electrolyzer for energy-saving hydrogen production and a urea-assisted zinc–air battery. This work demonstrates a promising pathway for developing high-performance pyrochlore catalysts via spin state engineering for sustainable energy conversion applications.
研究领域:
催化
·
材料科学
·
电化学
·
能量转换
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）