DALTON TRANSACTIONS
·
2025
·
IF 3.3
Yaqoot khan,Yunyun Du,Li Yan,Niu Zhang,Menglei Zhang,Hongwei Ma,Hui Li
Understanding the coordination geometry of nucleotide mono-, di-, and triphosphates is pivotal for unraveling the intricate relationships between molecular structure and biological function, particularly in metal–ligand interactions and their role in biomolecular recognition. This study investigates the structure of nucleotide-metal polymers and their selective interactions with amino acids, specifically Tryptophan (Trp) and Tyrosine (Tyr). We synthesized and comprehensively analyzed five coordination polymers of cytidine-nucleotides: cytidine monophosphate (CMP), deoxycytidine monophosphate (dCMP), cytidine diphosphate (CDP), and cytidine triphosphate (CTP): {[Cu(CMP)(bpa)(H₂O)₃](CMP)·3H₂O}n (1), {[Cu₂(dCMP)(4,4′-bipy)₂(H₂O)₂]·4H₂O}n (2), {[Cu₂(CDP)₂(azpy)(H₂O)]·3H₂O}n (3), {[Cd₂(CDP)₂(bpa)₂(H₂O)₂]·8H₂O}n (4), and {[Cu(CTP)(2,2′-bipy)]·2H₂O}n (5), where (3), (4) and (5) mark the first report of CDP and CTP coordination complexes. Single crystal X-ray diffraction unveiled the structure of the polymers to be one-dimensional (1, 5) or two-dimensional (2, 3, 4). Circular dichroism (CD) spectroscopy in both the solid and solution states elucidates the chirality-driven assembly in these nucleotide-metal polymers. The selective interactions of coordination polymers with Tryptophan (Trp) and Tyrosine (Tyr) were studied using spectroscopic titrations. Experimental and computational analyses reveal distinct interactions between all five coordination polymers and the amino acids, highlighting their biosensing potential. Binding affinity variations across the polymers offer insights into nucleotide-metal coordination chemistry and suggest applications in molecular recognition and functional materials.
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高影响因子
Materials
·
2025
·Vol. 18
·期 15
·3679
·
IF 3.2
Guangxin Wu,Gaosheng Li,Lijun Wei,Hao Chen,Yujie Wang,Yunze Qiao,Yu Hua,Chenyang Shi,Yingde Huang,Wenjie Yang
This study synthesized FeNiCuAlX high-entropy alloys (HEAs) (where X = Cr, Co, Mn) using arc melting and investigated their high-temperature oxidation behavior in air at 900 °C. The oxidation kinetics of all alloys followed a parabolic rate, with the oxidation rate constants (kp) of FeNiCuAlCr, FeNiCuAlCo, and FeNiCuAlMn being approximately two to three orders of magnitude lower than that of the FeNiCu alloy. Specifically, FeNiCuAlCr exhibited the lowest kp value of 1.72 × 10−6mg2·cm4/s, which is significantly lower than those of FeNiCuAlCo (3.29 × 10−6mg2·cm4/s) and FeNiCuAlMn (1.71 × 10−5mg2·cm4/s). This suggests that the addition of chromium promotes the formation of a dense Al2O3/Cr2O3oxide layer, significantly enhancing the oxidation resistance. Furthermore, corrosion resistance was assessed through potentiodynamic polarization and electrochemical impedance spectroscopy in a 3.5% NaCl solution. FeNiCuAlCr demonstrated exceptional resistance to localized corrosion, as indicated by its low corrosion current density (45.7 μA/cm2) and high pitting potential (−0.21 V), highlighting its superior corrosion performance.
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International Journal of Smart and Nano Materials
·
2025
·
IF 6.6
Jiefeng Gong,Zhiyuan Huang,Huihuang Yu,Hongmingzhe He,Yige Xiong,Longqiu Li,Guanhua Zhang,Guangyu Zhang
High-precision three-dimensional (3D) printing has enabled the fabrication of architected microlattices with complex geometries and tunable functionalities, offering new opportunities for electrochemical energy storage devices. In particular, 3D polymer octet-truss lattice frameworks exhibit exceptional mechanical robustness, structural regularity, and customizable porosity, making them promising candidates for electrode applications. However, current fabrication techniques often face challenges in achieving the required precision and structural integrity for advanced applications. In this study, projection micro stereolithography (PμSL) was utilized to fabricate high-resolution 3D electrode substrates based on octet-truss microlattices. The printed structures were systematically optimized for both mechanical stability and printing accuracy. Electrochemical plating and magnetron sputtering were employed as surface modification techniques to improve the physicochemical characteristics of the lattices and introduce lithium-affinitive functionality. The resulting 3D microlattice electrodes demonstrate high structural precision and enhanced electrochemical performance, highlighting their strong potential for integration into advanced lithium metal batteries and related energy storage systems.
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Inorganic Chemistry Frontiers
·
2025
·
IF 6.4
Mengqi Man,Yong Guo,Tianran Hu,Ying Sun,Aikai Yang,Xiqing Chen,Xingchao Wang
The preparation of SiOx materials that exhibit enduring stable cycling performance and high initial coulombic efficiency (ICE) through cost-effective methods remains a substantial hurdle. Herein, a hybrid carbon-coated SiO-20/G@TMA composite was synthesized using an integrated strategy that combines high-energy ball milling and high-temperature carbonization, employing graphene (G) and trimeric acid (TMA) as carbon sources. The three-dimensional crosslinked conductive network, formed by the mechanically flexible graphene and the carbon-rigid TMA, induces the generation of a LiF-rich SEI film. This film reduces interfacial side reactions and improves the ICE to 74.2%. Furthermore, the SiO-20/G@TMA electrode, characterized by a rigid–flexible hybrid structure, demonstrates excellent capacity retention and impressive rate performance over extended cycling periods. The discharge capacity of the SiO-20/G@TMA anode reaches 848.3 mA h g−1 at a current density of 0.5 A g−1, with a reversible capacity of 77% (about 649.1 mA h g−1) maintained after 600 cycles. When paired with a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode, the SiO-20/G@TMA anode achieves a reversible capacity of 140.0 mA h g−1 at the current density of 0.2 A g−1. After 100 cycles, the capacity retention rate is 85% and the energy density is 474.7 Wh kg−1.
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Matter
·
2025
·
IF 17.5
Shining Wu,Yuting Zhang,Guanwu Li,Yifeng Hou,Mengyang Cao,Chengyu Wei,Pengkun Yang,Lu Huang,Yingpeng Wu
High-entropy alloys (HEAs) have a wide range of applications due to their excellent physical and chemical properties. However, traditional synthesis routes always require high temperatures over 923 K or have high equipment requirements. Here, we developed a liquid metal gallium (Ga)-mediated strategy using only a commercial vortex mixer and metal powders to synthesize HEAs near room temperature (303 K) with low power (7 W). A variety of HEAs were successfully prepared, and the yield can be expanded to over 10 g each time. The mechanistic investigation proved that Ga continued to flow under the mechanical force and exposed fresh surfaces to contact the metal, thereby promoting the process of metal dissolution in Ga and forming HEAs. These as-prepared HEAs can be used for catalysis in electrochemical oxygen evolution reactions with low overpotential and high durability. This strategy provides an innovative method for low-energy synthesis of HEAs at room temperature.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Zhenmin Xu,Ting Zhang,Junyu Lang,Mengli Xu,Ya Xie,Chunyan Wu,Huangrong Wang,Han Yu,Zhenfeng Bian
Carboxylates are commonly formed as intermediates during the oxidation of volatile organic compounds (VOCs) and are often regarded as significant barriers to the complete mineralization of organic pollutants. In this study, we present a novel cobalt-doped copper-based catalyst that employs an in situ benzoic acid-mediated oxygen activation strategy for the photocatalytic degradation of toluene under visible-light irradiation. Unlike traditional systems in which carbonyl intermediates contribute to catalyst deactivation, we demonstrate that benzoic acid, generated during toluene oxidation, acts as a potent ligand to modulate the electronic structure of cobalt sites. This interaction significantly enhances oxygen activation and promotes the generation of reactive oxygen species (ROS), facilitating the complete oxidation of toluene to CO2 with nearly 100% efficiency. In situ characterization and density functional theory (DFT) calculations reveal that the migration of benzoic acid from copper to cobalt sites under visible light is critical for the oxidation process. This migration induces a pronounced electron-donating effect, enabling activation of the Co center, which drives efficient ROS production and autocatalytic mineralization of benzoic acid. The resulting Co-Vo-Cu catalyst demonstrates exceptional catalytic activity and stability, outperforming previous systems in VOCs degradation. This work offers new insights into the role of organic intermediates in oxygen activation and presents a promising strategy for the development of next-generation photocatalysts for VOCs elimination.
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Petroleum Science
·
2025
·
IF 6.1
Zhi-Cai Zhang,Jia-Kun Wu,Chao Wang,Zhi-Qiang Hou,Yao Tang,Hao Li,Jiao Yang,Jun Gao,Yi-Kan Yang,Yang-Bin Liu,Xiao-Ping Ouyang,Hai-Kuo Wang
With the global oil and gas industry increasingly targeting ultra-deep well development, the demand for wear resistance in polycrystalline diamond compact (PDC) bits is increasing. However, further improvement of the mechanical properties of PDC incurs prohibitively elevated costs and stringent technological challenges. Here, we present a two-stage high-pressure infiltration (HPI) methodology involving cobalt removal pretreatment followed by lubricant infiltration. The successful infiltration of lubricants into diamond micropores has been systematically verified, and the effects of lubricant phase composition, infiltration pressure, and temperature on infiltration depth have been thoroughly investigated. Fractal dimension analysis characterizes the pore structure of cobalt-removed diamonds, revealing a strong correlation between the fractal dimension and friction coefficient reduction. Tribological testing confirms the formation of lubricating films at friction interfaces, achieving a 71.5% reduction in the coefficient of friction for lubricant-containing diamond materials. This straightforward strategy opens a gate to developing the next generation of self-lubricating diamond materials.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Hanqian Li,Bangzhi Ge,Wenqi Xie,Ruoyan Li,Chao Li,Wanqi Jie,Dongxu Zhang,Yi Qin,Yuan Yu,Chongjian Zhou
Liquid-like thermoelectric materials continuously draw significant attention because of their extraordinary performance. However, liquid-like Cu atoms usually aggregate into clusters, resulting in charge carrier concentration far above the optimized value. Herein, we demonstrate that the dynamic Cu atoms can be homogenized throughout the matrix by a phase-dependent diffusion process. We directly visulized that the typical equilibrium process periodically aggregates Cu atoms into clusters along the grain boundaries, leaving abundant vacancies within the dynamic cation sublattice and thereby causing carrier concentrations that are much higher than the optimal value. We developed a solid-state non-equilibrium quenching process to freeze the homogeneous Cu sublattice in the symmetry cubic phase to ambient environment and removed the unfavorable Cu segregation. This substantially decreases the hole concentration from 1.2 × 1022 cm−3 for the equilibrium sample to 0.8 × 1022 cm-3 for the quenched sample, approaching the calculated optimal value. Notably, the highly uniform Cu sublattice reduces the lattice thermal conductivity to predicted minima of 0.3 W·m−1·K−1 from 300 to 1000 K. The reduced hole concentration and lattice thermal conductivity collectively give rise to a high ZT value of 1.5 at 1000 K, lying in the ballpark of all previously reported stoichiometric copper chalcogenides.
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JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Mingliang Li,Lu Tian,Xinning Huang,Jinxiao Dou,Jianglong Yu,Xingxing Chen
Aqueous zinc-ion batteries (AZIBs) are recognized as one of the most promising battery technologies, but dendrite growth and persistent parasitic reactions at the Zn anode hinder their practical use. This study employs cost-effective and source-abundant folic acid (FA) as a multifunctional electrolyte additive, which is self-assembled at the Zn anode, forming an effective layer improving the reversibility and stability of the zinc anode/electrolyte interface. In-situ Raman reveals the electrostatic shielding effect of the layer against SO 4 2− anions. In-situ scanning vibrating electrode technique (SVET) further verifies the superior inhibitory effect of the interface layer on Zn anode corrosion. Practically, Zn//Zn symmetric battery filled with ZnSO 4 /0.1 FA electrolyte achieves a prominent cycling stability of 9500 h at 0.2 mA cm −2 and 0.2 mAh cm −2 , and the constructed Zn//Cu half battery exhibits a high reversibility (99.69 %) after 1045 cycles. Strikingly, Zn//MnO 2 full battery also demonstrates outstanding charge/discharge durability for at least 900 cycles with a high reversibility of >99.94 % at 5 C. This study provides a novel paradigm for the development of environmentally benign and cost-efficient electrolyte, pivotal in realizing exceptionally reversible AZIBs.
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Surfaces and Interfaces
·
2024
·
IF 5.7
Bohan Zhang,Chang Wen,Mingtao Xu,Qian Liu,Zhiyin Zhang,Hongbo Huang,Dapeng Wang,Zhengkai Tu
The development of acid-sensitive OER (Oxygen Evolution Reaction) electrocatalysts based on ruthenium oxides is a crucial step toward achieving large-scale hydrogen production in low-cost Proton Exchange Membrane (PEM) electrolyzers. However, a major challenge in this field is to overcome the tendency of ruthenium-based metal oxide dissolving in acidic environments, which affects long-term stability. In this study, we employed MIL-88B(Cr) as a precursor and used a two-step annealing method to prepare trimetallic metal oxides Cr 0.5 Co x Ru 0.5-x O 2-δ . Detailed experimental measurements demonstrate that the introduction of Co reduced the volume of individual catalyst crystallites without disrupting the rutile crystal structure and inherent activity of CrO 2 @RuO 2 . Simultaneously, Co and Cr doping lowered the oxidation state of Ru within the catalyst system. Lower oxidation states of Ru are more stable during the OER reaction, ensuring the stability of this catalyst to be at least 100 hours. Furthermore, Co incorporation raises the energy required for oxygen vacancy formation, reduced the involvement of lattice oxygen, and enhanced the catalyst's activity. The catalyst Cr 0.5 Co 0.17 Ru 0.33 O 2-δ with the best performance exhibited the overpotential of only 224 mV at 10 mA cm -2 in 0.5 M H 2 SO 4 . This study offers a viable strategy for developing highly active and stable catalysts in acidic media by controlling the electronic structure of RuO 2 .
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Zhen Sun,Maonan Ran,Guan Zhang
Solar-driven photocatalytic water splitting for hydrogen production is gaining dramatic interests, however, efficiencies are still not satisfied to make it technically applicable in large scale. Herein, we have observed unconventional high-temperature effects on the change of intrinsic photophysical properties of semiconductors, and demonstrated dual synergistic photothermal effects in promoting hydrogen evolution from water reduction and cellulose pyrolysis at high temperature with metal oxides catalysts. Particularly, Zn/ZnO species deposited TiO 2 (Zn-TiO 2 ) catalyst showcased exceptional thermal-assisted photocatalytic H 2 production from water reduction along with cellulose decomposition at 573 K with quasi apparent quantum efficiency of nearly 100 % under 365±10 nm irradiation and solar to hydrogen (STH) efficiency of 2.72 %. In situ spectroscopic characterizations at 573 K corroborated that the absorption spectrum of Zn-TiO 2 could be extended into the near-infrared region (beyond 1200 nm), and electron-hole pair recombination is curbed and migration of photogenerated charge carriers within the catalyst is remarkably promoted at high temperature. In addition, experimental analysis and molecular dynamics simulations unraveled the synergistic photo-assisted thermal effects for cellulose pyrolysis, and delineated potential pathways for cellulose conversion at high temperature under light irradiation. This work paves the way for efficient utilization of whole solar spectrum for achieving sustainable water splitting and biomass waste utilization.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Yixin Zhang,Shuang Chen,Wenxuan Cao,Jichao Zhang,Lan Peng,Haifeng Lu,Wenjing Ma,Ranhua Xiong,Chaobo Huang
Oil–water separation has attracted considerable concern for the increasing discharge of industrial oily wastewater and frequency of oil spill accidents. Conventional oil–water separation methods are not effective in treating emulsified oil. In this study, photothermal-responsive polyurethane (PU)/poly(methyl methacrylate)-block-poly(N-isopropylacrylamide) (PMMA-b-PNIPAM) fibrous membranes (denoted as PTFMs) with core-shell structure are fabricated. The as-prepared membranes exhibited photothermal-modulable water wettability. Significantly, the wettability and permeation flux can be tuned by light illumination during the oil–water separation process because of the incorporation of light-responsive Ag nanoparticles and thermal-responsive copolymers. In addition, the as-prepared membrane exhibited recyclability even for forty separation cycles. It was concluded that the photothermal-responsive composite fibrous membranes provide great potential for the development of remotely operated water treatment devices.
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