MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhi Luo,Jing Li,Shenglan Hu,Lingling Zheng,Lixin Xu,Biyang Deng
In this study, Ru(bpy) 3 2+ and oxalate (C 2 O 4 2− ) in Ru@Zn-MOF generated self-enhanced electrochemiluminescence (ECL). The self-enhanced ECL composite exhibited a short electron transfer distance and minimal energy loss, which ensured the high and stable luminescence efficiency of Ru@Zn-MOF. A MnO 2 @AuNPs nanocomposite was introduced into Ru@Zn-MOF via antigen–antibody interactions in the presence of squamous cell carcinoma antigen (SCCA). This significantly quenched the ECL signal due to the combined effect of the dual quenchers, MnO 2 NFs and AuNPs. A highly efficient ECL-RET immunosensor was constructed for the sensitive detection of SCCA in the linear range of 1 fg/mL to 100 ng/mL, with a limit of detection of 0.26 fg/mL (S/N = 3). This immunosensor has broad clinical applications for the quantitative detection of biomarkers.
研究领域:
生物医学工程
·
分析化学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
RENEWABLE ENERGY
·
2021
·
IF 8.001
Feng Lin,Yulong Ma,Yonggang Sun,Kanghe Zhao,Tingting Gao,Yingbo Zhu
Due to the inertness and structural complexity of lignin, upgrading lignin to biofuels and fine chemicals still faces great challenges. In this paper, a one-pot method was used to catalyze straw lignin with H-ZSM-5 supported by Ni and Ru bimetals, and the lignin conversion rate reached 88.1%. The yield of monophenol was 19.5%, of which the yield of 4-ethylphenol and 4-ethylguaiacol was 4.9% and 3.8%, respectively. The 2D HSQC NMR analysis confirmed that the Ni–Ru/H-ZSM-5 catalyst had an obvious activity of breaking C β -O bonds before and after the reaction. The result showed that after loading metal Ni and Ru, the Lewis acid of the catalytic system was greatly increased, which caused electron transfer between Ni and Ru. 3Ni-1.5Ru/H-ZSM-5 had the strongest activity due to the largest synergy among Ni, Ru and H-ZSM-5. The synergy was the key factor leading to the cleavage of C–C and C–O bonds in straw lignin and the high-performance catalytic degradation of lignin. Besides, the effect of reaction solvent and hydrogen resource on upgrading lignin to fine chemicals over 3Ni-1.5Ru/HZSM-5 catalyst was also intensively investigated. This research developed a method for the direct conversion of lignin into valuable monophenols.
研究领域:
催化化学
·
生物质转化
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
·
2014
·Vol. 16
·期 6
·3305-3312
·
IF 6.852
Yuhe Liao,Qiying Liu,Tiejun Wang,Jinxing Long,Longlong Ma,Qi Zhang
The selective transformation of cellulose to C6 alditols provides a feasible route towards the sustainable synthesis of chemicals and fuels. Herein, the catalytic performance of amorphous zirconium phosphate (ZPA) combined with 5 wt% Ru/C was evaluated in the direct conversion of cellulose to C6 alditols (sorbitol and mannitol) under hydrothermal conditions. The yield of C6 alditols reached 63.5% and 85.5% with microcrystalline cellulose and ball-milled cellulose as the feedstock, respectively. This hybrid catalyst was developed to convert concentrated cellulose to obtain C6 alditols with a high concentration of 68.8 mg mL−1 in the final products. The high yield of C6 alditols from cellulose was ascribed to the fact that ZPA favoured the adsorption of cellulose and promoted its depolymerization to cellobiose and glucose, which was hydrogenated immediately to C6 alditols over Ru/C. The weak adsorption of C6 alditols over ZPA inhibited the dehydration of C6 alditols to sorbitan. Furthermore, ZPA exhibited excellent hydrothermal stability and could be reused for several runs.
研究领域:
化学工程
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Jin Wang,Xinyu Lu,Huafeng Wang,Yuan Zhong,Zhihui Dai,Tianxiang Wei
In this work, Ru(bpy) 3 2+ -loaded gold nanocage (AuNCs) (Ru–AuNCs) was prepared and found to display a distinct property of electrochemiluminescence (ECL) enhancement under mercury ions (Hg 2+ ) interaction. Based on this, we designed a screen-printed bipolar electrode-ECL (SPBPE-ECL) sensing platform by coupling with the thymine-Hg 2+ -thymine (T-Hg 2+ -T) binding pattern for one-step highly sensitive detection of Hg 2+ . This ECL sensor showed a wide linear detection range (0.75 – 850 μg L −1 ) and low detection limit (0.1290 μg L −1 ) toward Hg 2+ , with a one-step detection procedure and disposable feature, displaying potential applicability in the point-of-care-testing (POCT) of Hg 2+ in the environment. In addition, the Hg 2+ -mediated ECL signal enhancement mechanism of Ru–AuNCs was also investigated. It was confirmed that Hg 2+ interaction etched the cage structure of Ru–AuNCs, which sped up the release of more Ru(bpy) 3 2+ around the sensing electrode. Furthermore, Au–Hg alloy structure was formed on the surface of Ru–AuNCs, which also improved the ECL signal. This target-induced in-situ sensing material surface reconstruction strategy would provide a better design concept for the construction of ECL POCT sensor.
研究领域:
环境科学
·
分析化学
·
生物传感
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemCatChem
·
2023
·Vol. 15
·期 7
·e202201541
·
IF 4.5
Mengyu Jin,Chenlu Wang,Xin Song,Yuanbo Song,Zheng Shen,Yalei Zhang
Graphical Ru-MACHO catalysts can simultaneously satisfy parallel reactions because of having the outstanding ability to dehydrogenate glycerol into LA and hydrogenate CO 2 into FA under conditions of 200 °C and 48 h. Dehydrogenation of glycerol for CO 2 reduction can simultaneously produce lactic acid (LA) and formic acid (FA) products with high added value, greatly improving the atomic economy and the actual benefits. We report that Ru-MACHO (regR) as a catalyst can satisfy the requirements of parallel reaction at the same time. The designed experiment confirms that under the conditions of 200 °C and 48 h, 3 mg Ru-MACHO (regR) catalyst can obtain FA and LA yields of 40 % and 45 %, respectively. The possible reaction path of glycerol dehydrogenation for CO 2 reduction is confirmed by the isotopic tracer technique and nuclear magnetic resonance analysis.
研究领域:
化学工程
·
催化反应
·
可再生资源利用
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Haijiao Jia,Xinyu Xu,Yuchen Cui,Mengqi Cheng,Guirong Borjihan,Xiao Zhang,Shengbo Yang,Youxin Li
A novel magnetic heterogeneous ruthenium catalyst (Fe 3 O 4 @SiO 2 -DTPA-Ru) was prepared by using magnetic silicon spheres as support, ethylenediaminepentaacetic acid (DTPA) as functional ligands, ruthenium chloride as catalyst precursor. The results obtained after a series of characterizations showed that the catalyst Fe 3 O 4 @SiO 2 -DTPA-Ru was 5–15 nm in size with a 0.205 nm lattice and contained 0.31 mmol Ru/g catalyst. It also had a good thermal stability under 232°C which was verified by thermal filtration method. Besides, the saturation magnetic intensity was as high as 20.54 emu/g. The catalyst Fe 3 O 4 @SiO 2 -DTPA-Ru was applied for the first time into thirteen oxidation reactions of aromatic alcohols and showed good catalytic activity even the yields of eleven aromatic alcohols were all over 90%. In catalyzing 1-phenylethanol to acetophenone, its TOF and TON were 9677 h −1 and 6991, respectively. The Fe 3 O 4 @SiO 2 -DTPA-Ru catalyst could still maintain good reusability and catalytic performance after 15 cycles of 1-phenylethanol oxidation, which was superior to many reported catalysts and had great potential in future industrial production.
研究领域:
化学
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Tongtong Zhang,Xibo Zhang,Fei Chang
The industrial production of ammonia predominantly relies on the well-established Haber-Bosch process, which operates under harsh conditions (350–500 °C and 15–35 MPa). This process consumes nearly 2% of the world’s energy production and is associated with significant carbon emissions. Consequently, there is an urgent need to develop efficient catalytic processes for ammonia synthesis that can operate at milder temperatures and pressures. In this work, we introduce a synergistic photothermal ammonia synthesis process using ruthenium (Ru) catalysts supported on defective titania (TiO2-x). A solid-state mechanical reduction method was employed to create oxygen vacancies in TiO2, resulting in the formation of TiO2-x. The Ru nanoparticles on TiO2-x with moderate oxygen vacancies exhibited high dispersion, with an average particle size of 2–3 nm. Owing to the plasmonic hybridization effect between TiO2-x and Ru nanoparticles, the Ru/TiO2–x system demonstrated full-spectrum solar-light absorption and enabled photothermal ammonia synthesis at low temperature (250 °C). This system achieved nearly a 300% enhancement in activity compared to that of traditional thermal catalytic processes. Kinetic studies revealed a decrease in apparent activation energy and reaction orders of N2 and NH3 upon solar illumination of Ru/TiO2–x, indicating its remarkable photothermal promotion of nitrogen activation and ammonia desorption. Our findings underscore the significance of the photothermal effect in activating inert nitrogen molecules and achieving ammonia synthesis under mild conditions, providing valuable insights into the design of future catalysts.
研究领域:
催化化学
·
材料科学
·
化学工程
·
纳米技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 40
·13999-14008
·
IF 4.174
Mingxuan Li,Yao Wang,Jing Cai,Yunrui Li,Yujie Liu,Yin Dong,Shuna Li,Xiaolin Yuan,Xin Zhang,Xiaoping Dai
Modifying the surface active sites of Pt-based catalysts at the atomic level is of great significance to enhance the electrooxidation of methanol molecules. Herein, efficient active site assembly strategies are proposed, precisely, aimed at building high-performance electrocatalysts. Serving as proof-of-concept examples, both instances of Pt nanowires surface doping isolated Ru atoms (Ru/Pt NWs) and Ru nanoparticles supported on Pt nanowires (Ru@Pt NWs) are specially designed to optimize the catalytic performance of methanol oxidation reaction (MOR). The specific activity and mass activity of optimal Ru/Pt NWs can reach up to 3.93 mA cm−2 and 568.40 mA mg−1Pt, respectively, which is 1.53/1.94 times that of the Ru@Pt NWs and 2.03/2.59 times that of pure Pt NWs. Detailed studies on mechanism reveal that the Pt–Ru alloy can significantly improve the electron transfer kinetics of MOR, and activate more Pt atoms involved in the Langmuir–Hinshelwood (L–H) pathway compared with Ru@Pt NWs, all of which collectively accelerate the methanol oxidation. This surface engineering strategy via assembling active sites can reveal a promising method in the design of advanced Pt-based catalysts for direct methanol fuel cells.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2015
·
IF 5.636
Daifang Wang,Yanyan Li,Zhenyu Lin,Bin Qiu,Longhua Guo
Carcinoembryonic antigen (CEA) is recognized as a disease biomarker to reflect the existence of various cancers and tumors in the human body. Sensitive detection of CEA in body fluid is valuable for clinical diagnosis and treatment assessment of cancers. Herein, we present a new approach for ultrasensitive determination of CEA in human serum based on localized surface plasmon resonance (LSPR) enhanced electrochemiluminescence (ECL) of Ru(bpy)32+. In this surface-enhanced ECL (SEECL) sensing scheme, Ru(bpy)32+-doped SiO2 nanoparticles (Ru@SiO2) act as ECL luminophores, and AuNPs are used as LSPR source to enhance the ECL signal. Two different kinds of aptamers specific to CEA are modified on the surface of Ru@SiO2 and AuNPs, respectively. In the presence of CEA, a multilayer of Ru@SiO2–AuNPs nanoarchitectures would be formed. Our investigation reveals that the ECL signal of Ru@SiO2 can be effectively enhanced by AuNPs. One layer of Ru@SiO2–AuNPs nanoarchitectures would generate about 3-fold ECL enhancement compared with the ECL of the nanoarchitectures without the presence of AuNPs. As much as 30-fold ECL enhancement could be obtained by a multilayer of Ru@SiO2–AuNPs nanoarchitectures. Under the optimal conditions, a detection limit of 1.52 × 10–6 ng/mL of CEA in human serum was achieved. To the best of our knowledge, CEA assays with such a low LOD have never been reported for an ECL sensor.
研究领域:
分析化学
·
生物医学工程
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2024
·
IF 2.8
Boyun Gao,Huijiang Huang,Mooeez Ur Rehman,Bin Ren,Yuruo Liu,Weipeng Fan,Pengfei Li,Lizhi Zhang,Yan Xu,Yujun Zhao
BACKGROUND The synthesis of fatty amines via fatty alcohol amination offers a promising avenue for environmentally friendly production, particularly when compared with the methods employing hydrocyanic acid which often involve significant emissions. RESULT This study explores the synthesis of n-hexylamine through one-step amination of n-hexanol utilizing a series of Ru-doped Ni catalysts supported over γ-Al 2 O 3 , achieving 61% n-hexanol yield, 35% dihylamine yield and 3.5% trihylamine yield at the n-hexanol conversion of 99%. CONCLUSION The characterization results of the catalysts revealed a significant interaction between ruthenium and nickel in the bimetallic catalysts, leading to the enhanced reducibility of Ni species and improved metal dispersion. Moreover, ruthenium species were found to play an important role in the dissociation of NH 3 into NH x (x = 1, 2), thereby significantly improving the dehydrogenation process of n-hexanol at Ni sites. The synergistic effect between the two kinds of metal sites emerges as crucial factor for the boosted alcohols amination process. © 2024 Society of Chemical Industry (SCI).
研究领域:
催化化学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2017
·
IF 9.446
Jibo Liu,Huijie Shi,Qi Shen,Chenyan Guo,Guohua Zhao
Aiming at improving the efficiency of photoelectrocatalytic (PEC) CO 2 conversion to methanol, a heterogeneous photoelectrocatalyst was prepared by covalently binding a Ru(II) metal-organic complex (Ru-Py) containing exposed pyridyl on the periodic TiO 2 nanotube arrays (TNTAs). PEC characterization indicated that the Ru-Py/TNTAs photocathode exhibited excellent PEC CO 2 reduction activity in aqueous solution. The initial CO 2 reduction potential on Ru-Py/TNTAs photocathode reached −0.4 V (vs. NHE) under simulated solar irradiation. The cathodic photocurrent response of Ru-Py/TNTAs in CO 2 -satuarated aqueous solution was about 1.79 mAcm −2 , which was 2.4 times that of TNTAs . It may be caused by the enhanced light absorption in the visible region originated from Ru-Py. Meanwhile, Ru-Py played an important role in accelerating the separation of photoinduced electron-hole pairs evidenced by the photoluminescence spectra. PEC CO 2 reduction test showed that 84.8 μmol methanol was produced with 63.9% faraday efficiency, 62.6 turnover number (TON) and 45% selectivity at −0.9 V under 8 h irradiation. Furthermore, the non-covalent bonded system only produced 41.3 μmol methanol indicating that the carboxylic covalent linking displayed excellent electron transfer efficiency and methanolization performance. The mechanism investigation revealed that the exposed pyridyl provided the active sites in forming pyridiniumformate intermediates confirmed by the differential UV–vis absorption ( ΔA ) spectrum, which was of great significance in the efficient CO 2 methanolization. The probable reaction pathway for catalytic CO 2 reduction to methanol was also proposed combining the possible intermediates detected by gas chromatography mass spectrometry (GCMS).
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2016
·Vol. 6
·期 10
·150
·
IF 2.964
Gaixiu Yang,Yongming Sun,Pengmei Lv,Feng Zhen,Xinyue Cao,Xiaojie Chen,Zhongming Wang,Zhenhong Yuan,Xiaoying Kong
Carbon-supported Pt–Ru alloys with a Pt/Ru ratio of 1:1 were prepared by NaBH4reduction at room temperature. X-ray diffraction (XRD) measurements indicate that the as-prepared Pt–Ru nanoparticles had a face-centered cubic (fcc) structure. X-ray photoelectron spectroscopy (XPS) analyses demonstrate that alloying with Ru can decrease the 4f electron density of Pt, which results in a positive binding energy shift of 0.2 eV for the Pt 4f peaks. The catalytic properties of the synthesized Pt–Ru alloy catalysts were compared with those of commercial Pt/C catalysts by linear sweep voltammetry (LSV). The results show that the mass activity of the oxygen reduction reaction (ORR) is enhanced by 2.3 times as much mass activity of Pt relative to the commercial Pt/C catalyst. Single-chambered microbial fuel cell tests also confirm that the Pt–Ru alloys as cathode catalysts have better performance than that of commercial Pt/C catalysts.Keywords:Pt–Ru nanoparticles;oxygen reduction reaction;electrocatalyst;microbial fuel cell
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
危险品化学品经营许可证（带存储）