JOURNAL OF SOLUTION CHEMISTRY
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2022
·Vol. 51
·期 12
·1508-1521
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IF 2
Wei Mengru,Wu Yuxing,Li Tiancheng,Zhang Ping,Liu Xuejun,Zhai Cuiping,Chen Xin
Cyclic voltammetry (CV), 1 H nuclear magnetic resonance ( 1 H NMR), density functional theory (DFT), quantum theory of atoms in molecules (QTAIM) and reduced density gradient (RDG) were used to study the interactions of dopamine hydrochloride (DH) with nicotinic acid (NAC) in aqueous solution. The results revealed that there existed three weak interactions in the DH–NAC system, C–H···π, π···π stacking and hydrogen bonds. These interactions showed different effects on the DH electrooxidation and its chemical environment. Moreover, the CV and 1 H NMR results indicated that C–H···π interaction between the H atoms on the benzene ring of DH and the pyridine ring of NAC, and π···π stacking between the benzene ring of DH and the pyridine ring of NAC are the main interactions in the system.
研究领域:
电化学
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理论化学
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生物化学
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DOI
高影响因子
ChemSusChem
·
2018
·Vol. 11
·期 22
·3965-3974
·
IF 7.411
Hai Wang,Liang Wang,Jian Zhang,Chengtao Wang,Ziyu Liu,Xinhua Gao,Xiangju Meng,Seung Jo Yoo,Jin-Gyu Kim,Wei Zhang,Feng-Shou Xiao
Graphical Ready layer one : A newly synthesized catalyst with layered cobalt oxide on the surface of titania (layer-CoO x /TiO 2 ) is highly selective towards the aerobic oxidation of C−H bonds in a series of hydrocarbons. In-depth structural and functional characterization reveal that the layer-CoO x /TiO 2 readily reacts with O 2 for the adsorption and activation of C−H bonds. Construction of efficient interfaces to improve the performance of supported metal catalysts is a challenging but effective technique. A newly synthesized catalyst with layered cobalt oxide on the surface of titania (layer-CoO x /TiO 2 ) is highly selective towards the aerobic oxidation of C−H bonds in a series of hydrocarbons under sustainable conditions. The layer-CoO x /TiO 2 easily outperforms the state-of-the-art noble metal catalysts and homogeneous cobalt salts used in industry. In-depth structural and functional characterization reveal that the layer-CoO x /TiO 2 readily reacts with O 2 for the adsorption and activation of C−H bonds. The layered structure of CoO x can maximize the interfacial effect of CoO x /TiO 2 leading to a good performance for the oxidation of C−H bonds.
研究领域:
催化化学
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材料科学
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DOI
高影响因子
iScience
·
2022
·
IF 6.107
Jianming Liu,Xiaopei Wang,Zhiyue Wang,Yan Yang,Qinghu Tang,Hongchi Liu,Hanmin Huang
Summary Presented here is a copper-catalyzed, aerobic oxidative C-H/C-H cyclization reaction, which occurs by cleaving the C-H and N-H bonds of 3-phenylindoles. A broad range of 3-phenylindoles can be well tolerated to produce the indole-containing polycyclic aromatic hydrocarbons (PAH) in good to excellent yields. An evaluation of the reaction mechanism is enabled by the isolation of the di- and tri-indole intermediates, highlighting the role of the substrate for this catalytic reaction. The results of these controlled experiments and kinetic studies provide solid experimental support for a self-catalysis reaction, which has rarely been observed in oxidative C-H activation reactions. Additional mechanistic studies indicate that the substrate for this reaction accelerates by the following mechanism: The substrate combines with the Cu catalyst to transform the less active di-indole intermediate into a tri-indole intermediate. This intermediate is quickly converted into the desired product along with regeneration of the substrate copper complex.
研究领域:
有机化学
·
催化化学
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Huixin Wu,Jinghao Fan,Liang Wang,Hai Wang
Selective ammoxidation of sp 3 -hybridized C-H bonds is very important in the pharmaceutical and fine-chemical industries. However, simultaneous activation of the C-H bond and ammonia is difficult due to the competitive adsorption of ammonia and hydrocarbons on metal sites, which poisons the catalyst. In this study, we report an atomically dispersed rhodium (Rh) catalyst supported on manganese oxide nanorod that exhibited high activity and selectivity for the C-H bond ammoxidation under mild reaction conditions, outperforming the conventional supported metal catalysts and homogeneous manganese catalysts under the equivalent conditions. Mechanistic studies reveal that the manganese oxide nanorod with potassium ions in the tunnels significantly hindered the ammonia poisoning to Rh, providing free Rh sites for C-H bond activation and enhancing the ammonia-resistance of the catalyst. This work provides an opportunity to improve the efficiency of industrially important reactions that suffer from catalyst deactivation due to surface poisoning.
研究领域:
催化化学
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材料化学
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有机合成
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多相催化
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可持续化学
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产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2025
·
IF 5.5
Ayesha Tariq,Muhammad Daniyal Ghouri,Kamran Amin,Mathar Hamza,Behroz Khan,Bin Wang
In this study, we presented a gram-scale synthesis and the electrochemical evaluation of niobium-doped, PANI-coated tungsten oxide hexagonal nanowires (NWs) as high-performance anode materials for lithium-ion batteries (LIBs). The polyaniline treatment of the doped NWs significantly enhanced their electrochemical properties as anode materials for LIBs. The PANI-coated, Nb-doped WO3 hexagonal NWs exhibited a 2.59-fold increase in specific capacity and an approximately 8.57-fold increase in the lithium-ion diffusion coefficient compared to bare WO3 hexagonal NWs. The analysis of the charge storage mechanism revealed that the anode kinetics involve both diffusion and surface adsorption processes. Our strategy provides a strong foundation for possible commercialization of the tungsten oxide hexagonal nanowires for next-generation lithium-ion batteries.
研究领域:
材料科学
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电化学
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储能技术
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纳米材料
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产品关联
DOI
高影响因子
Cell Reports Physical Science
·
2025
·
IF 7.3
Run Li,Fan Lan,Aike Xi,Di Gao,Yunrui Li,Ya Huang,Siming Zhao,Yilin Ding,Yanlong Zhao,Rufan Zhang
As an energy-efficient technology, electrochromic devices (ECDs) represent a promising solution for smart windows in buildings and vehicles. However, conventional all-solid-state ECDs suffer from sluggish ion diffusion. Here, we propose a high-performance all-solid-state ECD enabled by a rapid H + transfer pathway. A solid-state polyaniline (PANI) interface serves as an efficient H + reservoir, replacing Li + ions to drive electrochromism in Prussian blue (PB). By integrating a sodium-ion-conducting solid polymer electrolyte (SPE) above PANI, H + ions are selectively pumped into PB via an ion exchange mechanism. The PANI network also stabilizes PB’s framework by preventing anion/solvent intercalation. The optimized ECDs exhibit exceptional performance: fast switching speeds (1.2 s coloration, 3.0 s bleaching), high optical modulation (72.5% at 600 nm), and robust cycling stability (>5,000 cycles with <10% decay). Furthermore, large-area flexible ECDs (20 × 30 cm 2 , ∼0.4 mm thickness) are demonstrated, highlighting their potential as replaceable smart films for energy-efficient buildings and vehicles.
研究领域:
材料科学
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电化学
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能源效率
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智能窗户
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固态器件
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Lu Zheng,Saisai Ju,Xiong Li,Yongde Ma,Hongwei Zhang,Zhenping Cai,Yanning Cao,Kuan Huang,Lilong Jiang
Efficient capture of residual NH₃ from Haber-Bosch recycling gas is essential to improve process efficiency and reduce environmental impact. In this study, a series of sulfonated porous organic polymers (PTO-1S, PTT-1S, PTF-1S) were fabricated by a post-sulfonation strategy using phenolic hydroxyl-containing precursors to capture NH 3 . Comprehensive characterizations of the sulfonated derivatives demonstrated not only the successful grafting of –SO₃H groups, but more importantly, a cooperative effect with the native phenolic –OH groups. The optimized PTO-1S achieves an outstanding NH₃ capacity of 11.52 mmol/g (at 298.2 K and 1 bar), with particularly impressive performance at low pressures (5.56 mmol/g at 313.2 K and 0.03 bar), surpassing most reported adsorbents. Mechanistic studies revealed that this cooperation creates an optimal balance of strong chemisorption (–SO₃H) and reversible hydrogen bonding (–OH), which is identified as the origin of the high capacity and exceptional cycling stability (< 1% capacity loss/cycle). Besides, the sulfonated samples maintain excellent selectivity under simulated industrial conditions (NH₃/N₂/H₂ mixtures) and a rapid adsorption rate (90% saturation within 2 min), demonstrating their potential for practical NH₃ recovery applications.
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Qian Xie,Zhengxin Cai,Zhi Zhang,Yongjun Li,Xinyu Zhang,Jianmin Wang,Jiajia Cai
Deliberate engineering of the excellent skeleton to support the MnO 2 can facilitate electron transfer and charge distribution, contributing to high-energy/power supercapacitance. Herein, an ambient and cost-effective hydrogen-doped method is innovatively employed to prepare H-TiO 2 nanotube arrays (H-TNTAs), where the MnO 2 grows further in situ. After hydrogenation, the capacitance increases by 40-fold, attributing to the improved conductivity. The H-TNTAs supported MnO 2 provides good pseudocapacitive performance, with a specific capacitance of 430.1 F/g at a discharging current of 300 μAcm −2 . The H-TNTAs@MnO 2 coupled active carbon (AC) in 0.5 M Na 2 SO 4 electrolyte is fabricated as the aqueous asymmetric supercapacitor (ASC). The ASC device displays a high energy density of 43.9 Wh kg −1 at a power density of 550 W kg −1 , with an output voltage of 2.2 V and a superior capacitance stability of 86.7 % (over 5000 cycles). The idea for designing the hydrogenated transition metal oxides can be extended to other high-performance metal oxide electrodes for energy storage devices.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
Cell Communication and Signaling
·
2026
·
IF 11.6
Diao Jiayong,He Qixuan,Liu Quanzhen,Liu Yuxuan,Chen Simiao,Zhang Yuzhe,Gui Houda,Chen Jingyi,wu Dongni,Pang Xinyu,Zhang Qingyue,Wang Ya-nan,Zhang Dongjiao
Background Mitochondria, as crucial organelles in eukaryotic cells, are deeply involved in cellular energy metabolism and biogenesis. Currently, mitochondria have been found to transfer between cells and regulate a range of cellular functions and research has found that mitochondrial transfer has been shown to play an important role in regulating bone homeostasis. Methods Laser confocal imaging was used to confirm the occurrence of mitochondrial transfer between cells. JC-1 staining explains the state of free mitochondria in receptor cells. In order to reveal the relationship between the state and function of free mitochondria, osteogenic induction, Western blotting, flow cytometry, and in vivo experiments were conducted. RNA seq is used to analyze changes in cells. Different inhibitors were used to verify the specific mechanism of action of free mitochondrial transfer. Results Free mitochondrial transfer can improve the function of receptor cells through lysosomal pathway. Free mitochondria are degraded by cathepsin H (Ctsh) in lysosomes and release a large amount of cysteine after entering the receptor cells. In this process, the existence of membrane potential of free mitochondria is not critical. Cysteine, as the most important raw material for glutathione synthesis, can enhance the number and function of mitochondria in receptor cells. Conclusion Our study demonstrates that free mitochondrial transfer promotes bone regeneration by increasing cysteine supply, and provides innovative insights for understanding mitochondrial transfer.
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产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Zhengmei Wu,Chenchen Cai,Xiangjiang Meng,Yanhua Liu,Tao Liu,Zhenxia Zhao
Triboelectric nanogenerators (TENGs) enable self-powered real-time monitoring of pipeline vibration states in chemical engineering systems, providing an effective approach for intelligent operation and maintenance of critical chemical equipment. Metal-organic frameworks (MOFs) can effectively enhance the output performance of TENGs. MOFs can go beyond the original characteristics of their powder form and be customized into different shapes to adapt to the intended applications. However, MOF-based triboelectric materials are typically limited by their poor mechanical properties and high sensitivity to humidity. In this study, the H-bond/ion coordination strategy is employed to immobilize Zeolitic imidazolate framework-8 (ZIF-8) onto delignified wood, successfully designing a cellulose-MOF (CelluMOF) triboelectric material with excellent mechanical properties and superhydrophobic performances. The wood's porous structure induced directional alignment of MOFs along the pore channels, significantly improving mechanical performance. Furthermore, hydrophobic modification is performed on the material surface, achieving a contact angle of 152.6°, demonstrating outstanding humidity stability. The CelluMOF triboelectric material combines the mechanical toughness of wood with the functional properties of MOFs. A self-powered vibration sensor constructed using this material demonstrates exceptional sensitivity, achieving an average identification accuracy of 97.8% in detecting pipeline vibrations. Remarkably, it maintains stable performance even at 85% RH.
研究领域:
纳米技术
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材料科学
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化学工程
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传感器
·
智能材料
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xiaoxia Tao,Peng Wang,Run Hou,Huafei Liao,Fenghai Cao,Yajie Fu,Yang Chen,Lizhi Wu,Yu Tang,Li Tan
Supported iron-based catalysts have emerged as promising candidates for alkane dehydrogenation due to their excellent sulfide resistance, cost-effectiveness, and environmental advantages to meet the needs of industrial applications. However, the practical application of iron-based catalysts is hindered by insufficient catalytic activity and rapid deactivation, primarily caused by the reduction/sintering of metastable iron species and concomitant carbon deposition during the reaction. This work systematically investigates the divergent catalytic behaviors of alumina- versus silica-supported Fe catalysts in propane dehydrogenation (PDH). Comprehensive characterizations demonstrate that the surface acidic alumina support establishes strong metal-support interactions (MSI) with electron-rich [Fe 2.4+ O 4 ] domains, effectively enhancing catalytic activity with a propane conversion of 29 % and 80 % propylene selectivity, outperforming silica-supported counterparts. At the same time, the robust active structure of [Fe 2.4+ O 4 ] in the 3Fe/Al 2 O 3 catalyst matches good regeneration capability, enabling suffered from six reaction-regeneration cycles. Moreover, this study indicates that effective propane dehydrogenation requiring synergistic interplay between FeO x speciation and acid sites on the support surface.
研究领域:
催化化学
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表面化学
·
能源化工
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产品关联
DOI
高影响因子
Journal of Analysis and Testing
·
2024
·Vol. 8
·期 1
·1-8
·
IF 5.5
Tu Mengling,Zhang Wei,Zhu Yunxiao,Ma Wen,Li Xiao,Zhou Shukun,Li Hongmei,Li Xianjiang
Thiacloprid is the first-generation neonicotinoid insecticide, which is widely used in modern agriculture. Reference materials are essential for sound measurement and traceability of results in chemical analysis. Pure thiacloprid was comprehensively assessed by two orthonormal methods: mass balance (MB) and quantitative nuclear magnetic resonance spectroscopy (qNMR). From MB, its mass fraction value was 998.4 mg/g with the subtraction of structurally related impurities (99.87%), inorganic impurities (0.006 mg/g), water (0.33 mg/g), and volatile organic solvent (0 mg/g). To guarantee sufficient separation of structurally related purity, peak purity of thiacloprid was evaluated by five points of UV spectra. From the qNMR of hydrogen, its mass fraction value was 995.7 mg/g which was traced to the internal standard (methyl sulfone). Finally, the certified value was assigned to 997 mg/g, together with an expanded uncertainty of 3 mg/g ( k = 2). This high-purity thiacloprid can be applied to routine monitoring in agriculture and the food fields.
研究领域:
分析化学
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农业科学
·
食品科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）