ENERGY & FUELS
·
2026
·Vol. 40
·期 30
·16496-16503
·
IF 6
Zhou Wei,Wu Zhiqian,Li Yanjun,Xu Bing,Wang Xiaoqi,Yang Feifei,Ni Zhonghai
The precise function of metal sites at the bifunctional
metal–oxide
interface in catalytic hydrodeoxygenation (HDO) of biomass-derived
oxygenates remains a subject of debate: do they serve merely as hydrogen
dissociation centers, or do they also directly participate in activating
the oxygenate substrate? To elucidate this, we fabricated two model
Ni/TiO 2 catalysts with distinct surface Ni geometries by
leveraging the crystal phase-dependent strong metal-support interaction.
Ni/r-TiO 2 features exposed surface Ni ensembles, while
Ni/a-TiO 2 presents predominantly isolated Ni sites due
to partial encapsulation by a TiO x overlayer.
Their HDO performance was evaluated using a suite of model compounds,
including m -cresol, anisole, benzyl alcohol, and
furfuryl alcohol, representing key C–O bond types in bio-oils.
The results demonstrate that Ni/r-TiO 2 exhibits broad activity
for all substrates, whereas Ni/a-TiO 2 selectively cleaves
only C–O bonds connected to sp 3 -hybridized carbon
atoms. This fundamental difference originates from the bond dissociation
energy. The cleavage of high-energy C Aromatic –O
bonds necessitates a synergistic activation mode at the Ni ensemble-oxygen
vacancy interface, which, while effective, concomitantly promotes
undesirable ring-related side reactions such as C–C hydrogenolysis,
thereby compromising deoxygenation selectivity. Conversely, lower-energy
C sp 3 –O bonds can be directly activated
on oxygen vacancies assisted by spillover hydrogen from the isolated
Ni sites, enabling precise and selective deoxygenation. This study
clarifies the structure-dependent role of interfacial metal geometry
and provides a mechanistic guideline for the rational design of selective
HDO catalysts tailored to specific feedstock platforms.
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Small
·
2025
·
IF 12.1
Hao Wu,Jinyi Pan,Chao Wu,Jie Wang,Chunyi Jiang,Chenyu Guo,Zhihao Yu,Zhenyang Wang,Sichao Du,Daoyou Guo,Jun Hu
Solar-blind photodetection plays a crucial role in environmental monitoring, corona detection, and covert battlefield communication due to its unique high signal-to-noise ratios in the UVC band. Aluminum quantum dots (AlQDs) emerge as promising optical materials owing to their extended photoresponse in the ultraviolet region, along with their low cost and compatibility with optoelectronic devices. Herein, an AlQDs-based cascade solar-blind photodetector is presented with enhanced sensitivity, achieved through the quantum confinement effect. By employing a gradient double-layer AlQDs stack integrated with β -Ga₂O₃, the heterojunction demonstrates a significantly suppressed dark current, reduced from 3 nA to 2 pA, and a spectral noise density of 2.8 × 10 −11 A Hz⁻ 1 / 2 compared to the single-layer device. The optimized photodetector achieves a high UV–vis rejection ratio ( R 250 / R 400 ) of 2.5 × 10 3 , a specific detectivity of ≈2.3 × 10 1 2 Jones, a relatively fast response time of 25 ms, and a responsivity of 35.1 mA W −1 under a 1 V bias. Furthermore, the device demonstrates robust interference-resistant imaging capabilities, enabling ultra-weak photodetection down to 23 nW cm −2 . These results highlight the potential of AlQDs-based cascade devices for advanced solar-blind photodetection applications.
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FOOD CHEMISTRY
·
2026
·
IF 9.8
Baozhu Shi,Yueran Ma,Dong Li,Zisheng Luo
Corosolic acid (CA) is a potent α-glucosidase inhibitor, but its application is limited by poor aqueous solubility and low bioaccessibility. In this study, a CA-stabilized water-in-oil (W/O) Pickering emulsion was proposed as a self-assembled delivery strategy to overcome these limitations. The emulsion markedly improved the gastrointestinal performance of CA, leading to a substantially higher bioaccessibility (28.54%) compared with crystalline CA (6.48%). Enzyme kinetic analysis for CA emulsion showed an apparent non-competitive inhibition mode and enhanced α-glucosidase inhibition with a reduced K i and IC 50 . Molecular dynamics simulations supported stable binding interactions consistent with an allosteric inhibition mechanism. Overall, this work demonstrates that structuring CA into a W/O Pickering emulsion can simultaneously improve its bioaccessibility and inhibitory efficiency, providing a conceptual framework for enhancing the functionality of poorly soluble triterpenoids.
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ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Bin Xiao,Wen-hai Zhang,Peng-bo Wang,Lin-bo Tang,Chang-sheng An,Zhen-jiang He,Hui Tong,Jun-chao Zheng,Bo Wang
Phosphate-based polyanion-structured materials have attracted considerable attention as anode materials in lithium-/sodium-ion batteries due to their stable crystal structure, affordability, and environmental friendliness. V 2 (PO 4 )O was encapsulated into crumpled nitrogen-doped graphene (VPO@N-G) through a facile spray-drying method in which VPO particles were completely encapsulated by N-doped graphene. For the first time, VPO@N-G was explored as an anode material for sodium-ion batteries. The Na + storage behavior of VPO@N-G was systematically investigated at the voltage range of 0.01–3.0 V (versus Na/Na + ). Results indicated that the VPO@N-G anode can deliver a highly reversible discharge capacity of 539 mAh g −1 at 0.05 A g −1 and achieve a highly reversible discharge capacity of 235.9 mAh g −1 even at a high current density of 10 A g −1 . Thus, VPO@N-G can be applied as a high-rate anode material for sodium-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米复合材料
·
无机功能材料
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Zhao Jiang,Taibo Liang,Yu Liu,Shengzhao Zhang,Zhongxu Li,Donghuang Wang,Xiuli Wang,Xinhui Xia,Changdong Gu,Jiangping Tu
It is still a big challenge to simultaneously enhance the ionic conductivity, dendrite suppression capability, and interfacial compatibility of sulfide solid electrolytes. In this work, a novel Li7P2.88Nb0.12S10.7O0.3 solid electrolyte is prepared via Nb and O cosubstitution of glass-ceramic Li7P3S11. This sulfide-based electrolyte possesses a high ionic conductivity (3.59 mS cm–1) at 298 K, improved critical current density (1.16 mA cm–2), and excellent interfacial compatibility between the sulfide electrolyte and Li2S active material. The improved electrochemical stability of the sulfide solid electrolyte against metallic lithium is attributed to the formation of Nb and Li2O at the interface, which can induce uniform Li deposition and prevent further side reaction. The all-solid-state Li/Li2S batteries based on this electrolyte exhibit remarkably enhanced cycling stability and rate performance.
研究领域:
材料科学
·
电化学
·
储能技术
·
固体离子学
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Shiwei Ge,Qian Zhao,Weijian Du,Weikun Jiang,Yu Liu
A TiO 2 -TiS 2 heterostructure decorated on S, O-MXene was successfully constructed. • TiO 2 -TiS 2 heterostructure mitigates MXene stacking and facilitates Li + diffusion. • The design of TiO 2 /TiS 2 ratio can balance the adsorption-catalysis trade-off. • S, O functional groups on MXene offer additional anchoring and catalytic sites. • The SM-TT interlayer enhances the cycle and rate performance of Li-S batteries. The practical application of lithium-sulfur (Li-S) batteries is impeded by polysulfides shuttling and sluggish sulfur redox kinetics. Although Ti 3 C 2 T x MXene has demonstrated great potential for polysulfides adsorption and conversion, its restacking tendency significantly diminishes its practical effectiveness. To address this critical issue, we designed and fabricated a TiO 2 -TiS 2 heterostructure decorated on sulfur and oxygen-functionalized MXene (SM-TT) through a controlled sulfurization strategy. This well-engineered architecture not only suppresses MXene restacking but also constructs abundant heterointerfaces that synergistically facilitate electron and Li + transport. Moreover, the rationally designed TiO 2 /TiS 2 ratio can well balance the adsorption-catalysis trade-off of polysulfides. Additionally, the sulfur and oxygen functional groups on MXene surface provide additional active sites for polysulfides anchoring and catalytic conversion. When employed as multifunctional interlayer in Li-S batteries, the SM-TT interlayer enables the cell to deliver a high initial capacity of 1292.8 mAh g −1 at 0.1C, maintain 768.6 mAh g −1 after 100 cycles, and exhibit 604.7 mAh g −1 at 1 C. Even under 5 mg cm −2 high sulfur loading, the cell still retains stable capacity of 722.7 mAh g −1 after 100 cycles. This work demonstrates an effective heterointerface engineering strategy for developing high-performance Li-S batteries. Download: Download high-res image (163KB) Download: Download full-size image
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Batteries & Supercaps
·
2026
·Vol. 9
·期 7
·e70377
·
IF 4.5
Yunju Li,Xin Zhang,Yudan Wang,Gongyuan Zhao,Chunxia Chen
Aqueous zinc–iodine batteries (AZIBs) have emerged as promising candidates for grid-scale energy storage due to their low cost, high safety, notable specific capacity, and environmental benignity. However, their practical application is hindered by several challenges associated with the iodine cathode, including insulating property of iodine and shuttle effect of polyiodide intermediates, which collectively lead to poor electrochemical performance. Herein, we report a rational strategy for synthesizing a polyaniline-coated, nitrogen- and oxygen-codoped porous carbon composite (denoted as PANI/NOCN) as a high-performance cathode host for AZIBs. The as-prepared PANI/NOCN composite features a mechanically robust, hierarchically porous nanostructure with a high specific surface area. Furthermore, the conductive polyaniline coating establishes efficient charge-transfer pathways and provides additional chemisorption sites for polyiodides. This architecture effectively accommodates iodine species and suppresses the polyiodide shuttle effect. The PANI/NOCN@I 2 cathode delivers a high reversible discharge capacity of 115 mAh g −1 at 10 A g −1 and retains 90 mAh g −1 after 2000 cycles, demonstrating excellent rate capability and cycling stability. This work demonstrates that the synergistic combination of heteroatom doping and conductive polymer coating is an effective strategy for designing advanced cathode hosts, offering valuable insights for the development of high-performance AZIBs. Graphical A hierarchical PANI/NOCN composite serves as a high-efficiency iodine host for aqueous zinc–iodine batteries. Its tailored porous structure and favorable hydrophilicity accelerate ion transport and restrain iodine shuttle, achieving superior rate capability and stable long-term cycling performance.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Han Yan,Rui Wang,Jinyin Yu,Xiaotang Gan,Housheng Gong,Qian Wang,Zewen Zhu,Xiang Tang,Zhiping Song
TAHPHO is studied as a novel organic cathode for aqueous rechargeable Zn batteries. • Its high theoretical capacity of 567 mAh g −1 can be fully utilized within 0.2–1.6 V. • It delivers 371 mAh g −1 at an average voltage of 0.78 V, with high cycling stability. • Electrode mass gain and Zn/S atomic ratio analysis are proposed for mechanism study. • The Zn 2+ –H + co-insertion mechanism of TAHPHO is quantitatively revealed. Small-molecule organic cathode materials (SMOCMs) hold great promise for aqueous rechargeable zinc batteries (ARZBs) but face challenges of insufficient energy density and ambiguous Zn 2+ –H + co-insertion mechanisms. Herein, we propose a “less is more” molecular design, retaining an uncyclized o-quinone group in quinone/pyrazine hybrids, and synthesize 6,9,16,17-tetraza-5,7,8,10,15,18-heptaphenehexone (TAHPHO) as a proof-of-concept. It delivers a higher theoretical capacity (567 mAh g −1 , 10-electron reaction) and higher redox potential than the conventional fully cyclized analogue. In an optimized window of 0.4–1.6 V , TAHPHO delivers a reversible capacity of 371 mAh g −1 at an average discharge voltage of 0.78 V with negligible fade over 100 cycles, and retains 70% of its reversible capacity (317 mAh g −1 ) after 2000 cycles at 500 mA g −1 , ranking among the best SMOCMs for ARZBs. Furthermore, we introduce two quantitative methods, i.e., electrode mass gain and Zn/S atomic ratio analysis, to reveal Zn 2+ and H + ion contributions during discharge. Both confirm Zn 2+ governs the initial 4-electron reduction, while H + dominates the subsequent 6-electron process. This work advances both rational molecular design of high-energy, high-stability SMOCMs and quantitative mechanistic understanding of Zn 2+ –H + co-insertion, paving a more scientific and practical path for ARZB development.
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Xiangwang Zeng,Yuan Qin,Tingyao Zhou,Shulin Zhao,Fanggui Ye
Conventional fluorescence sensing of o-nitroaniline (o-NA) is frequently limited by unstable exogenous fluorophores and interference-prone “turn-off” readouts. Here, we develop a probe-free, analyte-derived “turn-on” platform based on commercial nano-TiO2 with programmable charge migration to drive a light-triggered reduction–oxidation cascade. Oxalic acid acts as a hole scavenger to prioritize the electron-driven reduction of o-NA to o-phenylenediamine, while Cu2+ dynamically regulates electron flow and markedly enhances peroxidase-like activity to generate reactive oxygen species that efficiently oxidize the intermediate into the strongly emissive 2,3-diaminophenazine. This establishes a fundamentally new “self-luminescence” signal-from-none mechanism in which fluorescence arises uniquely from the target’s directional conversion, thereby minimizing batch effects and suppressing false positives from structurally similar nitroaromatics. The platform exhibits a linear detection range of 2.0–40 μM and a detection limit of 0.23 μM, supporting compliance-oriented monitoring in real water matrices.
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eFood
·
2025
·Vol. 6
·期 5
·e70086
·
IF 5.7
Jun Hu,Weijie Zhou,Dawei Sun,Tingxin Yu,Kuanchen Huang,Chujie Liang,Xusheng Li,Jianxia Sun,Weibin Bai
Cyanidin-3-O-glucoside (C3G), widely reported for ameliorative effects on insulin resistance and blood glucose levels, is often attributed to modulating insulin signaling pathways. However, previous studies based on the target fishing method of chemical proteomics have identified C3G's ability to covalently bind target proteins, including insulin-degrading enzyme (IDE), an Alzheimer's disease pathway protein closely related to metabolism. The specific interactions of anthocyanins with their target proteins and their correlation with activity remain unverified. Therefore, elucidating the relationship between C3G's bioactivity and target proteins is crucial. In this study, we employed various methods to clarify the binding and activity effects of C3G on IDE. CETSA-WB revealed that C3G binds to IDE and significantly enhances its thermal stability. Insulin and fluorescent peptide substrate measurements identified C3G's enzymatic inhibitory activity with an IC 50 of 109.6 μM. The preparation of recombinant human IDE ( rh IDE) allowed us to directly confirm the covalent binding of C3G to IDE. Furthermore, the silencing of IDE in cells negated the significant improvement in insulin resistance by C3G. These findings unveil a potential novel molecular mechanism by which C3G may regulate metabolic pathways, offering guidance for understanding how anthocyanins exert their functions through interactions with target proteins.
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JOURNAL OF STRUCTURAL CHEMISTRY
·
2025
·Vol. 66
·期 5
·1061-1069
·
IF 1.4
Hu J. R.,Wang J. H.,Liu J. S.
Two novel complexes, ( p -cymene)Ru( E 2 C 2 B 10 H 9 )(Ph 2 C(OH)CCH 2 ), designated as I ( E = S) and II ( E = Se), are successfully synthesized and characterized using NMR, IR, MS, and elemental analysis techniques. X-ray structural analysis is performed on complex I , which crystallizes in monoclinic system, space group P 2 1 / c with a = 11.6648(12) Å, b = 16.9404(17) Å, c = 15.6876(17) Å, β = 101.7490(10), C 27 H 36 B 10 ORuS 2 , M r = 649.85, V = 3035.0(5) Å 3 , D c = 1.422 g/cm 3 , Z = 4, F (000) = 1328, µ(Mo K α ) = 0.677 mm –1 , R = 0.0505 and ω R = 0.0793 for 3206 observed reflections ( I > 2σ( I )). Structural analysis indicates the coordination of C=C bonds, formation of C–S bonds, and B-substitution at B3 within the o -carborane cage, resulting in the formation of a Ru–B bond. Furthermore, the ruthenium atom coordinated to p -cymene complies with the 18-electron rule.
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JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 3
·1-17
·
IF 2.8
Chen Dongming,Li Ziwei,Li Dacheng,Li Shanrong,Mo Jing,Zheng Zijian,Lu Shaorong
In this study, a new type of compatibilizer, benzamide-grafted polyethylene polyamine (PEPA) containing solvent chain (PDABA-g-PEPA-O) was prepared from PEPA, 3,5-diaminobenzoic acid (DABA) and Oleoyl chloride (OC) and used to modify sisal microcrystalline cellulose (MCC). The natural rubber (NR) was filled with the modified MCC to prepare composites. The compatibilization effect of the prepared compatibilizer on the NR/MCC/PEPA-g-PDABA-O composites was investigated and its compatibilization mechanism was analyzed by molecular dynamics simulation (MD). The results show that adding 3wt% (calculated by MCC mass) PDABA-g-PEPA-O can improve the interfacial interaction between NR and MCC. The highest tensile strength of the NR composites was 25.319 MPa when 2.5phr MCC and 3wt% of PDABA-g-PEPA-O were added and is improved by 13.07% compared with that of NR/2.5phr MCC composites. In addition, the MD results showed that the amide and amine groups in the molecular structure of PDABA-g-PEPA-O formed a strong hydrogen bond and a strong van der Waals interaction with the hydroxyl groups of cellulose and PDABA-g-PEPA-O exhibited good compatibility with NR, which achieved the purpose of compatibilization. Moreover, the properties of tensile, deformation and shear resistance of the composites were enhanced with the addition of PDABA-g-PEPA-O in molecular simulation. The MD results provided a basis for the molecular design and preparation of compatibilizers and understanding their compatibilization mechanism in the polymer composites at a molecular level.
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