KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2023
·Vol. 40
·期 9
·2149-2158
·
IF 2.7
Li Chengfeng,Lyu Qishen,Li Zheng,Yang Shuliang,Sun Yong,Tang Xing,Zeng Xianhai,Lin Lu
The hydrogenation of biomass-based furan compounds is an important step for the catalytic valorization of biobased chemicals. In this work, Ru-based catalysts supported on different supports, such as HY, MgO and Amberlyst-15, were prepared and estimated for the hydrogenation of dimethyl 2,5-furandicarboxylate (FDMC). Among them, Ru/HY provided a desirable yield of 99.4% for tetrahydrofuran-2,5-dicarboxylic acid dimethyl ester (THFDMC) under 90 °C and 3 MPa H 2 . Based on catalyst characterization, Ru/HY could offer more surface Ru 0 species and carbon radical intermediates than other catalysts, which could largely favor the activation of hydrogen and then promote the hydrogenation of FDMC over Ru/HY.
研究领域:
催化化学
·
可再生资源化工
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·
IF 4
Yuanlei Huang,Mengdi Lv,Binglian Guo,Guojing Hu,Yong Qian,Zhi Su,Xuling Xue,Hong-Ke Liu
Breast cancer (BC) is one of the most common malignant tumors and often accompanied by inflammatory processes. Inflammation is an essential component of the tumor microenvironment, which might influence tumor proliferation and metastasis. Herein, three metal–arene complexes MA-bip-Ru, MA-bpy-Ir, and MA-bpy-Ru were prepared by tethering the non-steroidal anti-inflammatory drug meclofenamic acid (MA). Among them, MA-bip-Ru and MA-bpy-Ir showed lower cytotoxicity towards cancer cells, but MA-bpy-Ru showed significantly high selectivity and cytotoxicity towards MCF-7 cells through the autophagic pathway and exhibited no toxicity against normal HLF cells, showing potential for selective treatment of tumor cells. MA-bpy-Ru could also effectively destroy the 3D multicellular tumor spheroids, demonstrating its potential for clinical application. Besides, MA-bip-Ru, MA-bpy-Ir, and MA-bpy-Ru exhibited anti-inflammatory properties superior to MA, notably downregulating the expression of cyclooxygenase-2 (COX-2) and inhibiting the secretion of prostaglandin E2 in vitro. These findings demonstrated that MA-bpy-Ru was capable of intervening in inflammatory processes and showed the potential of MA-bpy-Ru to act as a selective anticancer agent, thus presenting a new mechanism of action for metal–arene complexes.
研究领域:
肿瘤学
·
药物化学
·
无机化学
·
癌症生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yilan Jiang,Zhibin Geng,Long Yuan,Yu Sun,Yingge Cong,Keke Huang,Lei Wang,Wei Zhang
The exsolution of noble metal nanoparticles (NPs) from perovskite usually requires high doping ratio of noble metal. Herein, we constructed a RuO2/LFRO composite by the exsolution of a low Ru-substituted A-site deficient perovskite, La0.9Fe0.92Ru0.08O3 (LFRO). In this process, pure Ru NPs are in situ exsolved from LFRO via a relatively low temperature heat treatment in 5% H2/Ar. Then the exsolved Ru NPs were oxidized to RuO2 for oxygen evolution reaction (OER) applications. The RuO2/LFRO composite achieved a high OER performance compared with the pristine LFRO, which is mainly originated from the generation of electrochemically active RuO2 NPs and the improvement of conductivity. In addition, the exsolution is a reversible process that the exsolved Ru NPs can disappear into the perovskite lattice at 550 °C in air. Our work thereof demonstrates an effective strategy to minimize the dosage of precious metals for catalytic applications in different fields.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
ACS Catalysis
·
2019
·
IF 12.221
Xueping Qin,Lulu Zhang,Gui-Liang Xu,Shangqian Zhu,Qi Wang,Meng Gu,Xiaoyi Zhang,Chengjun Sun,Perla B. Balbuena,Khalil Amine,Minhua Shao
Improving the reaction kinetics of hydrogen evolution and oxidation reactions (HER/HOR) in alkaline media is critical to promote the development of alkaline fuel cells and electrolyzers. Here, we prepared Pd3Ru alloy nanocatalysts with Ru segregated on the surfaces, forming adatoms and clusters. This structure dramatically lowered the overpotential of Pd toward HER in 1 M KOH by 104 mV at 10 mA cm–2. The HER activity was even higher than that of Pt (6 mV improvement at 10 mA cm–2). Theoretical simulation results revealed that Ru adatoms/clusters on the surface could weaken the hydrogen-binding energy and promote the OH adsorption, consequently lowering the reaction barrier of the rate-determining step in HER. Our findings are of significance for clarifying the role of Ru in bimetallic catalysts and rational design of more active catalysts for HER/HOR.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
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.
研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
Russian Journal of Physical Chemistry A
·
2024
·Vol. 98
·期 10
·2219-2232
·
IF 0.7
Guiling Wu,Zhao Wenli,Yang Xinyue,Niu Xiaopo,Guo Zhen,Liu Danni,Wang Qingfa
Abstract Producing high-density fuel of alkylated decalins from hydrodeoxygenation (HDO) of naphthalene derivatives is an environmentally friendly but still challenging method. Herein, a bifunctional Ru/HZSM-5 catalyst was fabricated by acid treatment (citric acid, oxalic acid, nitric acid) to effectively synthesize the alkylated decalins via HDO of naphthalene derivative. Acid treatment adjusted the acidic site distribution of Ru/HZSM-5. Nitric acid treatment (NA) resulted in more abundance of weak acidic sites which was beneficial for the dehydration process in HDO, and the lowest ratio of BAS/LAS to promote the hydrogenation of alkylated octalins, the rate-determining step of HDO. NA-treated Ru/HZSM-5 showed the highest HDO activity with the highest selectivity of 1,2-dimethyldecalin (74%). Besides, it also presents good HDO activity of naphthalene derivatives to produce high-density hydrocarbons. Therefore, Ru/HZ5-NA is a promising catalyst for the production of alkylated decalins and other high-value biofuels and chemicals.
研究领域:
催化化学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Junyu Zhang,Mingye Yang,Teng Huang,Jinwei Sun,Wenyu Hu,Yangyang Li,Fuyuan Yang,Minggao Ouyang
Hydrogen production from alkaline water electrolysis (AWE) has promising potential in energy storage due to the advantages of low cost and large scale, but its bottleneck is the low current density and poor durability of non-precious metal electrodes. Although numerous electrode designs with superior activity have been reported, the complicated synthesis process and refined microstructure have not changed the high preparation cost, high resistance, and poor durability of conventional AWE electrodes. Here, we report an efficient synthesis strategy of high-density Ni-Fe-Ru electrode (particle size < 5 nm) and explore the synergistic effect between Ni-Fe-Ru elements at different potentials. The electrode exhibits excellent OER activity (264 mV@100 mA cm −2 , Tafel slope = 49 mV dec −1 ) and AWE performance (400 mA cm −2 @1.89 V), it can work stably for 300 h at 500 mA cm −2 , with potential for industrial applications.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Dongyang Yang,Bingxiao Feng,Hongxin Wang,Qingjuan Xie,Yaping Liu,Hengjun Gai,Hongbing Song
Selective oxidation of alcohols to aldehydes by molecular oxygen is one of the most important transformations in multiphase catalysis. In this paper, a catalyst with selective oxidation ability was designed and synthesized for the selective catalytic oxidation of benzyl alcohol. N-doped carbon materials were prepared by high-temperature calcination using hydrothermal reaction products of citric acid and melamine as a carbon source, and a bimetallic catalyst supported by Ru-CeO 2 was constructed using the mixture as the carrier for the selective oxidation of benzyl alcohol to benzaldehyde. The results showed that the introduction of CeO 2 could effectively improve the oxidizing ability and catalytic activity of the catalyst. The Ru-Ce 0.05 /NC170–600 catalyst was able to convert 85.5 % benzyl alcohol into benzaldehyde at 140 °C, 6 h, and 2 MPa, and the selectivity for benzaldehyde was 100 %. It was demonstrated by DFT that it was theoretically feasible to generate benzaldehyde by extracting hydrogen atoms from benzyl alcohol molecules. Further, the selective oxidation experiments on other alcohols showed that the catalyst has high activity for the oxidation of various alcohols to generate the corresponding carbonyl products, and it is a catalyst with broad-spectrum selective oxidation ability. In this study, a green synthesis route of benzaldehyde was proposed to solve the problems in the traditional process. Meanwhile, it provides a new idea for the synthesis of carbonyl products by selective oxidation of alcohols.
研究领域:
化学工程
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
VACUUM
·
2024
·
IF 3.8
Ruilin He,Pan Yang,Maoyuan Zhang,Jingchuan Wang,Yawei Hao,Lijun Yang
Exploring efficient and robust electrocatalysts with low cost for hydrogen evolution reaction (HER) is critical for practical application of electrochemical water splitting. Ru-based platinum group electrocatalysts shows great potential in HER, however, Ru suffer from sluggish kinetics of water dissociation for electrochemical reduction of water to hydrogen in alkaline environments . Here, oxygen atoms are introduced into Ru by simple secondary heat treatment to form Ru–O–C bonds to weak the strength of Ru–H bond. The overpotential of the catalyst is only 19 mV at 10 mA cm −2 and the stability is greatly improved. Theoretical calculations reveal that the Ru–O–C structure formed in RuO 2 facilitates the dissociation of H–OH, which is the rate-determining step in alkaline electrolytes , leading to significant improvement in HER activity.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Yingjie Zhao,Li Tian,Xin Zhang,Zhuo Sun,Xiangyu Shan,Qian Wu,Ruizhan Chen,Juan Lu
A specificity recognition molecularly imprinted electrochemiluminescence sensor (MIECLS) for determination of clenbuterol (CLB) was established by molecular imprinting technology. In this sensing platform, Fe 2 O 3 was used as the carrier to fix Ru(bpy) 3 2+ , and it could also improve electrochemiluminescence (ECL) signal due to large specific surface area and better electronic transmission efficiency. The introduction of molecular imprinted membranes (MIPs) with CLB as template molecules realized the specificity identification of sensors. The intensity of the ECL signal decreased gradually when the concentration of CLB increased. Based on this characteristic, a novel method for measuring CLB was established, and the related mechanism was studied. Under the optimal conditions, the ECL response was proportional to the logarithm of CLB concentration in the range of 1 × 10 −9 mol L −1 to 1 × 10 −4 mol L −1 with a detection limit of 3.3 × 10 −10 mol L −1 . The results prove that MIECLS has great potential in pork and liver samples testing.
研究领域:
分析化学
·
生物传感
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Pei Jia,Kairong Yang,Jinjie Hou,Yuanyuan Cao,Xin Wang,Li Wang
The increasing deterioration of ecosystem derived from heavy metals residues brings about the environmental and food contamination , which presses the exploration of facile platform for monitoring heavy metals. Herein, a ratiometric fluorescence sensor was designed for Hg 2+ detection based on the compound of UiO-66-NH 2 and Ru(bpy) 3 2+ (Ru@UiO-66-NH 2 ) which was synthesized by situ encapsulation. The innovative composite displayed two emission peaks at 437 and 604 nm, and the addition of Hg 2+ could only quench the blue fluorescence due to static quenching and photo-induced electron transfer mechanism, providing an internal standard to promote the precision. Under optimal conditions, the ratiometric Ru@UiO-66-NH 2 probe revealed outstanding anti-interference capability and performed with a great limit of detection (LOD) of 0.053 μM for Hg 2+ , which was 2-fold lower than that of single-color UiO-66-NH 2 . By merit of Ru@UiO-66-NH 2 , test hydrogels were fabricated to provide a tactics for visual, rapid and on-site detection of Hg 2+ . Additionally, the dual-emitting sensing platform presented satisfactory recoveries and reliabilities in lake water, tap water , and drink water, demonstrating the application potential of this proposed ratiometric fluorescence sensor for monitoring Hg 2+ .
研究领域:
环境科学
·
分析化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Huiling Li,Li Tian,Shuning Yang,Chao Li,Ruidan Li,Yujia Song,Yanjia Guo,Xuwen Li
To sensitively monitor trace-level of malathion (MAT) in vegetable samples, an ultrasensitive solid-state electrochemiluminescence (ECL) sensor was proposed based on TiO 2 @CdSe and Ru(bpy) 3 2+ @Ag NPs. In this system, the introduction of Ag NPs enhanced the initial ECL signal of Ru(bpy) 3 2+ - tripropylamine (TPrA). When TiO 2 @CdSe was introduced into the system, the ECL signal was further enhanced, which may be due to the synergistic effect of the two complexes. Based on the fact that the addition of MAT causes ECL strength to decrease, a ECL sensor for the ultrasensitive trace detection of MAT has been successfully established. Under the optimized conditions, a wide liner detection range of MAT concentrations from 4.0 × 10 −14 to 4.0 × 10 −9 mol L −1 and a low detection limit (S/N = 3) of 1.3 × 10 −14 mol L −1 were obtained. The ECL sensor has been applied to the detection of vegetable samples and satisfactory results were obtained.
研究领域:
分析化学
·
环境科学
·
食品安全
✓ 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）