Journal of Materials Chemistry B
·
2015
·Vol. 3
·期 34
·6939-6944
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IF 4.726
Qi Liu,Dan Li,Wenjun Zhan,Yafei Luan,Hui Du,Xiaoli Liu,John L. Brash,Hong Chen
Surface modification with affinity ligands capable of capturing bioactive molecules in situ is a widely used strategy for developing biofunctional materials. However, many bioactive molecules, for example zymogens, exist naturally in a “quiescent” state, and become active only when “triggered” by specific activators. In the present study, in situ activation of a surface-integrated zymogen was achieved by introducing affinity ligands for both the zymogen and its activator. Specifically a dual affinity surface was designed for the integration of plasminogen (Plg) and tissue plasminogen activator (t-PA). This surface was expected to have plasmin-generating and, therefore, fibrinolytic properties. A polyurethane surface was modified with a copolymer of 2-hydroxyethyl methacrylate and 1-adamantan-1-ylmethyl methacrylate poly(HEMA-co-AdaMA). The affinity ligands, ARMAPE peptide (for t-PA) and ε-lysine-containing β-cyclodextrin (β-CD-(Lys)7) (for Plg), were attached in sequence via covalent bonding and host–guest interactions, respectively. The resulting surfaces were shown to have high binding capacities for both t-PA and Plg while resisting nonspecific protein adsorption. Pre-loading with t-PA followed by Plg uptake from plasma generated plasmin and thus endowed the surface with fibrinolytic activity. In general the incorporation of dual affinity ligands to achieve surface-promoted bioactivity is a promising approach for the development of biofunctional materials. The method reported herein for the sequential attachment of plasminogen and t-PA affinity ligands can be extended to systems of multiple ligands generally.
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Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 37
·21182-21194
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IF 10.733
Tao Li,Ming-Hui Huang,Yu-Bing Li,Xiao-Cheng Dai,Yunhui He,Guangcan Xiao,Fang-Xing Xiao
Interfacial charge separation and transfer enduringly constitutes a core issue, which dictates the efficiency of a photocatalytic reaction. However, the exquisite modulation of directional charge transfer to ideal reaction sites remains challenging in terms of the fast recombination rates of photoinduced charge carriers and the difficulty in constructing spatially separated high-speed charge transfer channels. Herein, we demonstrate the general construction of metal/metal chalcogenide heterostructures by a facile, green, universal, scalable and simple yet efficient electrostatic self-assembly strategy, wherein tailor-made positively charged 4-dimethylaminopyridine (DMAP)-capped metal nanocrystals (NCs, Au, Pd) were spontaneously and intimately tethered on negatively charged one-dimensional (1D) transition metal chalcogenides (TMC: CdS, CdIn2S4, ZnIn2S4, and Zn0.5Cd0.5S) initiated by a surface linker (DMAP) to fabricate well-defined heterostructured photocatalysts. Moreover, the interface configurations between the metal NCs and TMC matrices were finely designed by ligand engineering to afford controllable charge transfer pathways. Intriguingly, this tunable charge flow endows the metal NC/TMC heterostructures with markedly enhanced and versatile photoredox performance toward the anaerobic-selective photoreduction of aromatic nitro compounds, photocatalytic hydrogen generation, and photocatalytic selective oxidation of aromatic alcohols under visible light irradiation, in which metal NCs play imperative roles in efficiently capturing Schottky-junction-driven electrons from the TMC substrates without the interference of the hierarchically branched ligand capped on the metal NCs. Our studysheds light on the rational modulation of interfacial charge flow in photoredox catalysis for substantial solar energy conversion.
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高影响因子
FUEL PROCESSING TECHNOLOGY
·
2019
·
IF 4.507
Li Li,Yucui Hou,Weize Wu,Shisheng Liang,Shuhang Ren
During direct coal liquefaction (DCL), an imbalance problem of hydrogen donor solvents (HDSs) occurs, which greatly influences the application of DCL. To explore the imbalance of HDSs, in this work, the behaviors of tetralin and 9,10-dihydroanthracene (DHA) as HDSs were investigated in the hydrogenolysis of coal-related model compounds (CRMCs) at 425 °C for 1 h. The derivatives of the HDSs were identified, and the effects of CRMCs, catalyst Fe 1−X S and atmosphere were studied. It was found that the conversions of tetralin and DHA changed from 2% to 12.4% and 75.3% to 86.8%, respectively, under the studied conditions. The yields of H-nondonor products in DHA were higher than those in tetralin. Hydrocracking and isomerization of HDSs were the main reasons for the imbalance of HDSs. The free radicals formed by three CRMCs would react with tetralyls to form heavy products. Besides, dibenzyl ether (DBE), one of the three CRMCs, promoted the reaction in tetralyls each other and induced DHA to form condensed aromatic rings (CAS). Fe 1−X S promoted significantly the formation of naphthalene from tetralin, while the relative contents of H-nondonor products were reduced. The effective consumption of tetralin was enhanced by Fe 1−X S. However, Fe 1−X S had no significant effect on the DHA system. In addition, the yields of H-nondonor products in tetralin were promoted by 8 MPa H 2 . In the presence of H 2 , the yields of H-nondonor products in DHA were greater than those in N 2 . Moreover, a high H 2 pressure could increase markedly the hydrogen transfer , hydrogenation, hydrocracking of the HDSs, causing the imbalance of HDSs.
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Liwei Yang,Xinshuai Yan,Jianguo Duan,Xiaoxiao Huang,Qing Ma
As an intermittent energy source, the efficient utilization of solar energy relies on stable and efficient energy conversion and storage technologies. Phase change materials (PCM) have become ideal candidate materials for solar thermal storage due to their high energy storage density and reversible cycling characteristics. However, traditional organic solid-liquid phase transition materials are prone to leakage during the phase transition process and have a relatively low photothermal conversion efficiency, which limits their practical application. To address the above issues, this study designed a novel composite phase change material (CPCM). By collaboratively loading nanomaterials of different dimensions, such as copper nanowires (CuNWs) and MXene, into a graphene porous framework and encapsulating paraffin (PW), the reduced graphene oxide (rGO)/ CuNWs/MXene/PW (rGCuMPW) composite material was successfully constructed. Among them, the high light absorption capacity of MXene, combined with the excellent thermal conductivity of CuNWs, significantly improved the photothermal conversion efficiency (92.11 %) and thermal energy storage density (ΔH = 165.77 J·g −1 ) of the material. In addition, this material still maintains a stable phase transition enthalpy value after 100 cycles, demonstrating excellent cycle stability and reusability. The CuNWs-MXene synergistic modification strategy proposed in this study not only effectively reduces the leakage rate of organic PCM, but also significantly improves the performance of photothermal conversion and thermal energy storage, providing a new type of high-performance CPCM for the efficient utilization of solar energy.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Wenyuan Zhou,Wenjuan Li,Aiping Deng,Yelin Han,Yajie Li,Yajun Gao,Qin Hu,Guoqiang Zhu,Zhenquan Yang
Although bacteriophages (phages) are ideal biorecognition elements employed for Staphylococcus aureus detection, existing single-phage-based approaches are limited by the specific affinity of phages and false-negative results. To develop an improved phage-based colourimetric detection system and investigate its detection mechanism, we prepared a phage cocktail composed of three S. aureus phages (SapYZU10, SapYZU11, and SapYZUM13), immobilised it on Co-Mn nanozymes, and applied it to S. aureus for evaluation. The phage cocktail@Co-Mn demonstrated a sensitive, specific, and fast colourimetric evaluation of live S. aureus counts in approximately 17 min, with a detection limit of 92 CFU/mL. Moreover, the phage cocktail@Co-Mn was successfully used to detect S. aureus in food samples, with recovery rates ranging from 92.21 % to 105.56 %. The phage cocktail@Co-Mn also exhibited resilience to changes in pH (3–9), five food additives, and NaCl concentration (2 %–10 %). The detection mechanism of the phage cocktail@Co-Mn involves blockage of the active sites of the nanozyme producing O 2 •– . Notably, owing to the synergistic recognition spectra of the three phages in the cocktail, the recognition rate for the strains was a remarkable 100 %, compared with the much lower recognition rates of individual phages (between 74.7 % and 76.9 %). The recognition mechanism involves adsorption between phage tail fibres and S. aureus hosts. This pioneering study revealed that the phage cocktail is an effective biorecognition element suitable for the rapid, sensitive, specific, reliable, and colourimetric detection of viable S. aureus strains in the food industry, providing innovative directions for the phage-based detection methods.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Wanting Li,Suyun Liu,Hu Liu,Zhijun Dong,Rui Liu,Fuhui Wang,Li Liu
To address the limitations of traditional organic coatings low thermal conductivity and inadequate thermal management effect, this study developed novel thermally conductive phase change anticorrosion coatings (PS-x/EP) based on paraffin@silica (Pn@SiO 2 ) microcapsules. The Pn@SiO 2 microcapsules were prepared by interfacial polymerization with the optimal preparation parameters identified, high encapsulation efficiency (E = 85.53 %), phase change enthalpy (ΔH m = 154.93 J/g) and high thermal conductivity (0.355 W/ (m.K)) were obtained. The thermal conductivity of the composite coatings was increased by up to 54.9 % compared to the epoxy coating (EP) through local thermal conduction pathways formed by the Pn@SiO 2 microcapsules. Moreover, the phase transition of paraffin (Pn) effectively buffered temperature fluctuation and reduced temperature of the coatings. Electrochemical impedance spectroscopy (EIS) and salt spray test results demonstrated that the composite coatings containing within 20 % filler-maintained superior anti-corrosion performance, with |Z| 0.01 Hz of the PS-1/EP (5 %) coating maintained 2.15 × 10 9 Ω∙cm 2 after 30-days immersion in 3.5 % NaCl solution. This work provides a new strategy for the development of thermally conductive anti-corrosion coatings that with efficient thermal management and anticorrosion properties, offering potential for applications requiring dual-functional regulation.
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高影响因子
FUEL
·
2025
·
IF 7.5
Renjie Yang,Genmao Guo,Pengfei Chen,Yang Yang,Fangming Jin
Cellulosic biomass, as the most abundant renewable resource on Earth, holds great potential for achieving carbon neutrality through efficient valorization, where its hydrolysis to glucose represents a critical initial step. Conventional methods relying on homogeneous acids face limitations such as poor catalyst recycling and significant environmental issues. Carbon-based solid acids (CSAs) for cellulose hydrolysis have emerged as promising alternative, yet, their synthesis often requires high-temperature calcination to construct stable aromatic frameworks, leading to complex and energy-intensive processes. In this study, we propose a novel approach of utilizing the inherent aromatic structure of lignite for synthesizing lignite-derived solid acids (LSAs). We found that lignite was successfully sulfonated directly at low temperature without prior calcination. The synthesized LSAs which possess abundant sulfonic and weak acid sites, proved rapid and efficient hydrolysis of cellulose, resulting in high glucose yield of 57.4 % in just 45 min at 190 °C. In situ Fourier-transform infrared (FTIR) analysis further revealed the weakening of hydrogen bonds and cleavage of glycosidic bonds in cellulose facilitated by LSAs. This work provides a sustainable and low-carbon way for the integrated valorization of lignite and cellulosic biomass.
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高影响因子
FUEL
·
2025
·
IF 7.5
Xiaoli Zhang,Yimin Wang,Li Cui,Yuewen Chen,Xiya Zhang,Yihu Ke,Zhen Yuan,Hai Liu,Zhile Xiong
The selective oxidation of glycerol to dihydroxyacetone (DHA) is an essential route to effectively utilize the by-product glycerol of biodiesel, but the difficulty in balancing the activity and recycling stability of the catalyst severely limits the practical application of this process. Herein, we utilize the morphology engineering strategy of Au-loaded Cu-Zn composite oxide catalyst to optimize the catalytic performance. By regulating the calcination temperature, the Cu 0.1 Zn 0.9 O-T supports with morphologies such as microrod clusters, microrods, microspheres and yolk shells are obtained, and a series of Au/Cu 0.1 Zn 0.9 O-T catalysts are synthesized by loading Au NPs prepared through the plant-mediated method. The glycerol oxidation experiments reveal that catalyst morphology exerts a significant influence on efficacy. Among the tested catalysts, the microrod-structured Au/Cu 0.1 Zn 0.9 O MR exhibited the best performance, achieving complete glycerol conversion (100 %) and a DHA selectivity of 82.3 %. Particularly, Au/Cu 0.1 Zn 0.9 O MR exhibits excellent cycling stability that outshines most current catalysts, while maintaining 68.8% glycerol conversion and 78.2 % DHA selectivity after five runs. The underlying mechanism of the influence of catalyst morphology on the glycerol conversion performance is further revealed by a series of characterizations and density functional theory calculations.
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高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2025
·
IF 1.8
Hai-Wen Tang,Jin-Jin Jiang,Liu-Si Yu,Hong-Lin Yu,Yun-Qian Zhong,Li-Mei Yu,Su-Jun Wang,Huan Zhang
This study presents a dual-carbon modified LiMn0.6Fe0.4PO4 cathode (LMFP/SWNT/C) through the combined integration of amorphous carbon and single-walled carbon nanotubes (SWNTs). The composite was synthesized via a solvothermal approach followed by carbonization, forming a homogeneous conductive network with enhanced graphitization (IG/ID ratio = 3.24–4.24 versus 0.98–0.99 for LMFP/C). Electrochemical characterization revealed superior performance, including a high discharge capacity of 160.8 mAh g−1 at 0.1C and excellent cycling stability (124.9 mAh g−1 with 92.6% capacity retention after 280 cycles at 1C). In-situ electrochemical impedance spectroscopy (EIS) coupled with distribution of relaxation times (DRT) analysis indicated that the addition of SWNTs could improve the electronic conductivity. These results demonstrate the effectiveness of hybrid carbon architectures for optimizing LMFP cathode materials.
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高影响因子
JOURNAL OF THE TEXTILE INSTITUTE
·
2025
·
IF 1.5
Fei Yin,He Li,Xinxin Zhang,Roman A. Surmenev,Jianyong Yu,Shichao Zhang
Complex-component oily aerosols are more harmful to health than solid particulates, but current filtering materials are ineffective against high-temperature liquid-phase contaminants, highlighting the need for better purification methods. Herein, polyimide (PI) electrospun nanofiber membranes with spindle-bead structures and electret treatment are developed. The electret in nanofiber membranes captures oily aerosols, while spindle-bead structures create a Laplace pressure gradient that directs oil droplets from fibers to spindle nodes, enabling droplet detachment. The nanofiber filter membranes show stable surface potential (2.05 kV), and superior lipophilicity (dioctyl sebacate [DEHS] wetting time of 6 s), which enable the membranes to achieve efficient filtration of oily aerosols (>99.8%) and low-pressure resistance (∼68 Pa). Moreover, the membranes demonstrate exceptional thermal stability, retaining structural integrity and mechanical properties at 200 °C, making them ideal for high-temperature oily aerosol filtration. This strategy opens up a pathway for the design of high-temperature oily aerosol filtration materials.
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高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2025
·
IF 1.8
Chuan Long,Feifei Fang,Jingjing Wang,Bowen Xia,Chenyi Shao,Yinglong Yu,Yanfei Wang
Platinum-based catalysts are the best performing hydrogen evolution reaction (HER) catalysts in proton exchange membrane water electrolysis (PEMWE) for producing green hydrogen. Thus, developing Pt-based catalysts with high HER activity and stability is critical to promote the widespread application of PEMWE. Here, A series of Pt-based catalysts on different modified-carbon supports (Vulcan XC-72, Vulcan XC-72R, Ketjenblack EC-300J, and Ketjenblack EC-600JD) were prepared via a facile and efficient urea-assisted one-pot synthetic strategy. A systematic study and comparison with commercial catalysts were performed to elucidate the effect of the support on the catalyst properties through comprehensive physicochemical characterization and electrochemical evaluation. The resulting Pt/C600J catalyst exhibits excellent activity and stability for acidic hydrogen evolution reaction, which achieves an overpotential of 10 mV at 10 mA/cm2 and 18 mV after 20,000 CV. Notably, the Pt/C600J exhibited higher performance than commercial catalysts in a proton exchange membrane water electrolysis device, with a voltage of 1.79 V at a current density of 2 A/cm2. The device operated stably at 2 A/cm2 for 300 h without significant voltage increase, which is promising for PEMWE applications. These results provide guidance for the selection of carbon support for Pt-based catalysts and the development of advanced water electrolysis catalysts.
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高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2025
·
IF 1.8
Zekun Li,Bo Meng
Conventional methods of preparing carbon nano in most cases prepare worm-like carbon nanomaterials in a single dispersed arrangement, agglomerated into a spherical worm-like carbon nano is more special and uncommon. Tetradecyl trimethyl ammonium bromide (TTAB) and potassium chloride were used as raw materials, and sphericity of worm-like carbon nano could be prepared by in situ carbonization method. This particular morphology is called worm-like carbon nanospheres. The yield of worm-like carbon nanospheres was calculated to be about 5‰ using tetradecyl trimethyl ammonium bromide as the carbon source. A series of characterization means such as SEM, FT-IR, Raman, XRD and XPS were used for characterization. The characterization results show that the size of worm-like carbon nanospheres is between 300 and 600 nm, relatively dispersed, and the aggregation phenomenon is not obvious. The structure of worm-like carbon nanospheres has some defects with graphitization degree ID/IG = 0.8. About the formation mechanism of worm-like carbon nanospheres is explained accordingly in the existing cases.
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高影响因子
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