COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2011
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IF 2.13
Xin Tian,Zhengping Dong,Yifan Huang,Jiantai Ma
In this work, molecular logic element modified multifunctional silica nanoparticles having high magnetization have been successfully prepared. These multifunctional nanoparticles were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), Elementary analysis, X-ray powder diffraction (XRD) and Vibrating sample magnetometer (VSM). The characterization datum indicated that the organic ligand was successfully grafted on the surface of the magnetic silica nanoparticles . The fluorescent changes of the hybrid material upon the addition of cations (H + , F − and their mixture) is utilized as an INHIBIT logic gate at the molecular level, using the fluorescence intensity signal as output.
研究领域:
纳米医学
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生物传感器
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分子诊断
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化学生物学
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智能材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Wei Shen,Liang Qiao,Juan Ding,Yongming Sui
Tailoring tantalum disulfide (TaS 2 ) electrocatalysts with tunable stacking architecture and phase structure is of great importance for advancement of hydrogen evolution reaction (HER). In this work, stacking architecture- and phase- modulated tantalum disulfide nanosheets are reported through a facile liquid phase synthesis strategy. Accordion-like nanosheets , vertical nanosheets and ultrathin nanosheets are named according to their obvious stacking architecture, and 1 T-2 H mixed phase structures containing different degrees of 2 H phases are realized. High-resolution transmission electron microscopy shows that there are obvious lattice defects in the nanosheets. Tantalum disulfide nanosheets synergistically integrate multiple advantages of nanostructure engineering, phase engineering and defect engineering. In the HER process, the ultrathin tantalum disulfide nanosheet structure is conducive to the in-plane electron transfer , and its close contact with the electrode surface makes the charge transfer faster and has the best HER activity. The overpotential of the ultrathin nanosheet electrocatalyst at 10 mA cm −2 is 280 mV. After 10,000 CV cycles and over 40 h of i-t test, the catalyst still has high stability in acidic media. Theoretical calculations show that the addition of 2 H phase structure and rich defects improves the intrinsic activity and active sites, and jointly promotes the improvement of HER performance. Our work integrates a variety of optimal regulation methods into TaS 2 nanosheets, providing a new idea for the construction of advanced electrocatalysts for water electrolysis.
研究领域:
材料科学
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电催化
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纳米材料
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能量转换
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计算化学
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DOI
高影响因子
ORGANIC & BIOMOLECULAR CHEMISTRY
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2018
·Vol. 16
·期 33
·5999-6005
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IF 3.423
Jie Zhu,Baojun Xu,Jingjing Yu,Yaokun Ren,Jin Wang,Ping Xie,Charles U. Pittman,Aihua Zhou
Flavone selenide or sulfur-containing derivatives are pretty valuable in drug discovery due to their diversity of important bioactivities. Here, two simple Cu-catalyzed methods of constructing C–Se and C–S bonds on flavone skeletal structures via C–H functionalization are reported, which regioselectively afford flavone selenide and sulfide derivatives in good yields using cheap KSeCN or KSCN salts as selenium and sulfur agents. These methods further enrich the current C–Se and C–S bond construction methods.
研究领域:
有机化学
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药物化学
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合成方法学
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DOI
高影响因子
Inorganics
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2024
·Vol. 12
·期 11
·273
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IF 3.1
Quan Yang,Xiansong Jia,Zhikang Qin,Xiaoli Ding,Yongtao Li
Carbon-based materials with excellent catalytic activity provide new ideas for the development of magnesium-based hydrogen storage. C-H bonding interactions may play a key role in performance improvement. In this work, we comprehensively compare the magnesium-carbon cloth composites (CC) prepared by method of dry ball milling and wet impregnation. The results were that the hydrogen release activation energy (Ea) of MgH2@CC composites prepared by wet immersion method was 175.1 ± 19.5 kJ·mol−1, which was lower than that of pure MgH2(Ea= 213.9 ± 6.4 kJ·mol−1), and the activation energy of MgH2-CC composites prepared by ball milling method was 137.3 ± 8.7 kJ·mol−1, which provided better results. The kinetic enhancement should be attributed to C-H interactions. The presence of carbon carriers and electron transfer to reduce the activation energy of Mg-H bond fracture. These results will provide further insights into the promotion of hydrogen ab-/desorption from metal hydrides.
研究领域:
材料科学
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能源化学
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纳米技术
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物理化学
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氢能技术
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DOI
高影响因子
CATALYSIS LETTERS
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2013
·Vol. 143
·期 5
·463-468
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IF 2.244
Zhu Anlian,Li Qianqian,Li Lingjun,Wang Jianji
Abstract A series of choline-based ionic liquids (CIL) have been synthesized in this work. The results suggested that both the cations and the anions have significant influences on their properties such as thermostabilities, acidities and their performances for the synthesis of 3,4-dihydro-2(H)-pyrimidinones. The optimized catalytic system based on the CIL [DMEA][HSO 4 ] for the Biginelli reactions benefits from the wide substrates tolerance, benign reaction conditions, easy work-up procedures, and the feasible reusability of the ionic liquid. Graphical Abstract The thermostabilities, acidities, and the catalytic activities for the Biginelli reactions are all follows the sequence of [DMEA][HSO 4 ] > [Choline] [HSO 4 ] > [DMEA][H 2 PO 4 ] > [Choline] [H 2 PO 4 ] .
研究领域:
有机化学
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催化化学
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药物合成
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DOI
高影响因子
GEOPHYSICAL RESEARCH LETTERS
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2026
·Vol. 53
·期 14
·e2026GL122763
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IF 5
Yuanjing Li,Liangliang Zhang,Fabin Pan,Xiaojing Lai,Xiang Wu,Feng Zhu
Mercury is one of the few terrestrial planets in the solar system with a magnetic field, yet the energy source to power its core dynamo remains unclear to date. Si, C, and possibly H are the top candidate light elements for its liquid core. Here, we showed experimentally that Si, C, and H in Fe-Si-C and Fe-Si-C-H liquids share a simultaneous solubility at 9–21 GPa, 1,400°C–2,200°C, and this solubility decreases with decreasing temperature. When exceeding the simultaneous solubility, light elements will exsolve from the Fe melt as elemental phases such as diamond, graphite, silicon, and H 2 . We infer that if Mercury had an early liquid core primarily composed of saturated Fe-Si-C-(H) liquid, subsequent cooling would lead to continuous light element exsolution in its liquid core. The gravitational potential released by the exsolved light elements can drive the compositional convection and power its long-term core dynamo.
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2026
·
IF 6
Sen Liu,Shuaishuai Wu,Beibei Tang,Mao Chen,Yongqiang Chen,Hailong Wang,Rui Zhang,Bingbing Fan
High-density h-BN@SiC/ZrO 2 composites with different ZrO 2 contents were prepared by hot-pressing. The microstructure, flexural strength, thermal shock behavior, thermal expansion properties and corrosion resistance of the composites in molten steel were systematically investigated. The construction of the h-BN@SiC core-shell structure is conducive to the formation of a uniform and continuous network structure during the sintering process. This significantly improves the sintering performance of h-BN-based materials and enables the low-temperature preparation of high-density products. Moreover, the uniform distribution of SiC can effectively coordinate the thermal matching between h-BN and ZrO 2 , significantly improving the high-temperature performance of the material. During the corrosion process, the SiC network structure can effectively bind ZrO 2 and BN particles, effectively resist the erosion of high-temperature molten steel, and its erosion resistance increases with the increase of ZrO 2 content. Especially, when the ZrO 2 content reached 40%, the erosion depth of the sample was merely 160.61 μm after being immersed in static molten steel for 120 min. Moreover, the h-BN@SiC/ZrO 2 composite with 30 wt% ZrO 2 demonstrates superior comprehensive performance: It achieves a flexural strength of 159.63 MPa, retains 87.08% of its original strength after thermal shock testing, exhibits a low apparent porosity of 3.37%, and possesses an average coefficient of thermal expansion as low as 3.95 × 10 −6 /K −1 . The comprehensive properties of h-BN@SiC/ZrO 2 composites were obviously improved by SiC network structure.
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DOI
高影响因子
Journal of Magnesium and Alloys
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2026
·
IF 15.8
Haoyuan Zheng,Hua Ning,Chen Jin,Shuzhong Wang,Yadong Wang,Shixuan He,Haizhen Liu,Xinhua Wang
The magnesium-based hydrogen storage composite system Li–Mg–N–H (Mg(NH 2 ) 2 –2LiH) has attracted considerable attention due to its moderate operating temperature and high reversible capacity of 5.6 wt%, but its sluggish hydrogen absorption/desorption kinetics and poor cycling stability limit practical applications. Introducing an efficient catalyst is key to overcoming these issues. Herein, for the first time, an MBene material is introduced into a solid-state hydrogen storage system. Mo 4/3 B 2- x with a flower-like structure is successfully prepared by selective etching of the MAB phase (Mo 4/3 Y 2/3 AlB 2 ) and is then added as a catalyst into the Mg(NH 2 ) 2 –2LiH system. The improving effect and the underlying mechanism on hydrogen storage performance are systematically investigated. The results show that the composite with 10 wt% Mo 4/3 B 2- x exhibits optimal comprehensive performance. The onset temperatures for hydrogen absorption and desorption are significantly reduced from 110/130°C to 65/106°C, respectively. The hydrogen absorption/desorption capacities exceed 4.7 wt% under isothermal conditions at 180°C/170°C, and the apparent activation energy for hydrogen desorption decreases from 117.0 kJ/mol to 87.5 kJ/mol. Remarkably, after 100 cycles, the reversible capacity remains above 4.47 wt%, demonstrating excellent cycling stability. Mechanistic studies combined with DFT calculations reveal that the flower-like Mo 4/3 B 2- x dissociates into fine petals and becomes highly dispersed in the matrix during ball milling. The interaction between the catalyst and the matrix effectively weakens the N–H and Mg–N bonds and promotes the retention of the cubic phase Li 2 MgN 2 H 2 in the hydrogen desorption product, which is more favorable for rehydrogenation. Meanwhile, abundant boron vacancies in the catalyst structure provide fast diffusion channels for hydrogen atoms, and the highly dispersed nano-petals effectively separate the matrix particles, collectively enhancing the kinetics and cycling performance. This work opens a new direction for the application of MBene materials in solid-state hydrogen storage and provides a new strategy for the rational design of high-performance hydrogen storage catalysts.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
·
IF 3.9
Leiting Kuai,Xuan Meng,Naiwang Liu,Li Shi
This study aims to elucidate the reaction mechanism of naphthalene alkylation with long-chain α-tetradecene (α-C14H28) over H-FAU zeolite, a reaction critical for producing high-value alkylated aromatics in industrial catalysis. By combining in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) with kinetic and thermodynamic analysis, this study quantitatively tracks the evolution of four key carbocation intermediates formed on distinct Brønsted acid sites and identifies the Wheland-intermediate-forming step as rate-determining. For the first time, adsorption and diffusion analysis, reaction kinetics, and comprehensive catalyst characterization (XRD, NH3-TPD, pyridine-IR) are integrated to establish a complete mechanistic pathway. The results reveal how pore confinement and acid-site distribution govern intermediate evolution and overall activity, thereby offering a validated model for the rational design of selective and stable zeolite catalysts for continuous alkylation processes.
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Biyang Zhu,Abdul Mueed,Jiachen Liang,Lijun You
The radical-mediated degradation of polysaccharides is a promising route to modify their bioactivity, but the fundamental role of side-chain substituents in directing these reactions remains unclear. Therefore, this study systematically investigated the influence mechanisms of substituents on the monosaccharide degradation under UV/H₂O₂ treatment. Six glucose derivatives, including d -glucose, D-gluconic acid, methyl-D-glucopyranoside, D-glucal, D-glucosamine, and D-glucono-δ-lactone, were selected to represent typical electron-donating (-OCH₃, -NH₂), electron-withdrawing (-COOH, -C=O), and unsaturated double bond (C=C) groups. Degradation kinetic analysis revealed that electron-donating groups accelerated the radical degradation (k obs = 31.59 × 10 −3 min −1 for D-glucal), while electron-withdrawing groups decelerated it (k obs = 17.50 × 10 −3 min −1 for D-gluconic acid). The formation of carbonyl and carboxyl groups showed distinct accumulation patterns dependent on the substituent. Product profiling via high-performance anion exchange chromatography coupled with tandem electrospray mass spectrometry (HPAEC-ESI-MS/MS) demonstrated unique fragment patterns for each derivative, confirming substituent-directed reaction pathways. Quantum chemistry calculations further validated the proposed mechanisms, showing that electron-donating groups lowered the energy barriers for key steps such as hydrogen abstraction and peroxyl-radical cleavage. This work elucidates that the electronic properties of side-chain substituents determine the regioselectivity, kinetics, and product distribution in monosaccharide radical degradation. The findings provide a foundational mechanistic framework for predicting and controlling the degradation of complex functional polysaccharides.
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Surfaces and Interfaces
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2026
·
IF 6
Suhaib Shuaib Adam Shuaib,Yulu Xu,Mengdie Cai,Hao Li,Guo Jiayu,Jun Zhang,Fang Chen,Song Sun
The strong interfacial interaction between heterostructured semiconductors plays a vital role in enhancing the separation and transport efficiency of photogenerated charge carriers for photocatalytic applications. In this study, we report a stepwise synthesis strategy to fabricate a high-efficiency ternary heterojunction composed of NiS-decorated MoS₂/CdS with strong interfacial bonding (NS@SI-MCS). Initially, an amorphous MoSₓ layer was deposited onto CdS nanorods via chemical bath deposition, followed by thermal treatment in a reductive H₂/Ar atmosphere to form crystalline MoS₂ with strong interfacial coupling. This treatment not only improved the crystallinity of MoS₂ but also introduced sulfur vacancies, promoting enhanced interfacial contact and thereby strengthening electronic interactions and charge transport across the heterojunction. Subsequently, NiS nanoparticles were deposited as cocatalysts to facilitate efficient electron extraction and proton reduction. Comprehensive structural, optical, and electrochemical characterizations confirmed the formation of a well-integrated heterostructure, characterized by improved light absorption, suppressed charge recombination, and enhanced conductivity. The resulting NS@SI-MCS composite exhibited a remarkable hydrogen evolution rate of 5243 μmol h⁻¹g⁻¹ under visible light, approximately 16.6 times higher than pristine CdS. This enhancement is attributed to the synergistic effects of strong interfacial coupling of MoS₂/CdS and the catalytic contribution of NiS. This work provides valuable insight into designing strongly coupled heterojunctions and offers a scalable, noble-metal-free strategy for efficient solar-to-hydrogen conversion.
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产品关联
DOI
高影响因子
Materials Today Bio
·
2026
·
IF 11
Li Yang,Qianlei Ye,Xinran Peng,Jiayin Yu,Xueyi Xiao,Lei Wang,Yi Yan Yang,Peiyan Yuan,Guo-Bao Tian,Xin Ding
Rising antibiotic resistance and adverse effects on commensal gut microbiota severely compromise conventional antibiotic therapies for Helicobacter pylori infection. Sonodynamic therapy (SDT), which employs low-intensity ultrasound to activate sonosensitizers for localized generation of cytotoxic reactive oxygen species (ROS), presents a promising non-antibiotic alternative with minimal resistance development risk. However, the efficacy of SDT is inherently constrained by the short diffusion radius and lifetime of ROS. Herein, we developed a homologous-targeting biomimetic sonosensitizer platform to overcome this limitation: hybrid membrane nanovesicles (TNVs-DMVs) engineered from turmeric plant-derived exosome-like nanovesicles (TNVs) and H. pylori -derived double membrane vesicles (DMVs). TNVs contain sonosensitizer curcumin and improve its solubility, yet SDT efficacy against H. pylori is limited. The DMVs endow TNVs-DMVs with intrinsic homologous targeting capability towards H. pylori , significantly enhancing the intracellular delivery of curcumin and subsequent ROS generation within bacterial cells. As a result, TNVs-DMVs achieved potent eradication of H. pylori in both acidic and neutral conditions without inducing detectable resistance. Moreover, TNVs-DMVs exhibited superior mucus penetration compared to TNVs alone, enabling effective elimination of H. pylori and its biofilms residing within the protective gastric mucus layer. In an H. pylori -infected mouse model, TNVs-DMVs mediated SDT demonstrated efficacy surpassing free TNVs and comparable to standard triple antibiotic therapy. Importantly, unlike triple therapy which depletes commensal flora, TNVs-DMVs treatment not only preserves intestinal microbiota homeostasis but also significantly increases populations of beneficial bacteria. This rationally designed TNVs-DMVs platform represents a transformative therapeutic modality, offering resistance-free eradication of H. pylori while maintaining microbiome health, distinct from conventional antibiotics.
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DOI
PubMed
高影响因子
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