Science Bulletin
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2025
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IF 21.1
Yifang Zhou,Junqing Chen,Ziyang Lu,Luhe Qi,Jie Zhou,Chao Xu,Lu Chen,Jing Huang,Sijun Wang,Zhiqiang Wang,Awais Ghani,Gang Tan,Cai Lu,Ze Liu,Zhenqian Pang,Hongbing Deng,Chaoji Chen
The discontinuous fiber reinforced hydrogels are easy to fail due to the fracture of the fiber matrix during load-bearing. Here, we propose a novel strategy based on the synergistic reinforcement of interconnected natural fiber networks at multiple scales to fabricate hydrogels with extraordinary mechanical properties. Specifically, the P(AA-AM)/Cel (P(AA-AM), Poly (acrylic acid-acrylamide); Cel, cellulose) hydrogel is synthesized by copolymerizing AA and AM on a substrate of paper with an interconnected hollow cellulose microfiber network. This innovative design achieves a collaborative improvement of mechanical properties, including a 253-times increase in strength (27.8 vs. 0.11 MPa), 137-times increase in work of fracture (3.59 vs. 0.026 MJ m −3 ), and 235-times increase in fracture energy (16.48 vs. 0.07 kJ m −2 ). These outstanding mechanical properties benefit from the P(AA-AM) network formed by the copolymerization, which fills both the inside and outside of the hollow cellulose fibers, thus establishing abundant strong hydrogen bonds with the fibers and welding the fiber junctions. Consequently, the hydrogel exhibits enhanced resistance to the slippage and fracture of fibers. This strategy demonstrates the mechanical strengthening effectiveness of a variety of hydrogels by regulating the water-cellulose-copolymer interplay, representing a practical and universal route for designing super-strong hydrogels.
研究领域:
材料科学
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生物材料
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产品关联
DOI
PubMed
高影响因子
ELECTROANALYSIS
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2015
·Vol. 28
·期 1
·63-68
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IF 2.138
Jiao Wang,Xuerong Chen,Kangbing Wu,Miao Zhang,Wensheng Huang
Graphene nanosheets (GS) were prepared via ultrasonic exfoliation, and used to modify glass carbon electrode (GCE). Compared with GCE, the GS-modified GCE (GS/GCE) greatly increased the anodic stripping peak currents of Cd 2+ and Pb 2+ . Moreover, the response signals of Cd 2+ and Pb 2+ on GS/GCE further enhanced remarkably in the presence of Bi 3+ . Based on the synergistic enhancement effects of GS and Bi 3+ , a novel electrochemical sensor was developed for Cd 2+ and Pb 2+ . The detection limits were 0.35 and 0.045 μg L −1 for Cd 2+ and Pb 2+ . It was used in food sample analysis, and the accuracy was tested by ICP-MS.
研究领域:
分析化学
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环境科学
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Rongzheng Zhang,Lei Wang,Juan Han,Jiacong Wu,Chunmei Li,Liang Ni,Yun Wang
Enhancing the catalytic activity and stability of enzymes is of great importance in the development of green chemical and cost-effective application, with removal of bisphenol A (BPA) as a prominent example. Engineering immobilization carriers and immobilization methods of enzymes endows great potential to achieve above goal. Until now, these reports have focused on employing the metal-organic frameworks (MOFs) to increase the stability and reusability of enzymes, an enhancement in its catalytic activity has yet to be addressed. This work introduced a biomimetic mineralization process for facile synthesis of laccase@HKUST-1 biocomposite under mild condition. By exploiting the activity of laccase@HKUST-1, we demonstrated, for the first time, that the integration of laccase and HKUST-1 containing cofactor Cu 2+ ions leaded to 1.5-fold enhancement in the catalytic activity compared with free laccase, which was due to the synergistic enhancement of substrate oxidation. Indeed, the laccase@HKUST-1 biocomposite could function as active biocatalysts under biologically challenging conditions, such as acidic condition, high temperature, organic solvent, and continuous operation. The oxidation of phenols, such as BPA, with laccase@HKUST-1 reached higher catalytic performance than free laccase, and gave 100% degradation efficiency within 4 h. This study provides a feasible method to improve the activity and stability of laccase, which enable completely remove of BPA from the environment.
研究领域:
生物化学
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环境科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Weicun Jiang,Yaling Li,Yunshi Xu,Ting Jiang,Mingyu Zhao,Mengyuan Deng,Rongliang Wu,Yi Wang
Rational design of hierarchically structured carbon nanomaterials and also the facile regulation of their metal species decoration for enhanced oxygen reduction reaction (ORR) are urgently required. Herein, N-doped carbon nanospheres (N-MCN) with plentiful pyridinic and graphitized N-induced active sites were closely bridged with carbon nanotubes to remedy the conductivity loss of N-doping. The as-obtained N-MCN@CNT exhibited hierarchically porous structure with large surfaces area and good conductivity with small charge transfer resistance, which therefore had a superior ORR activity to the other carbon-base catalysts. Importantly, the metal species (M = Fe or Co) can be loaded in this porous N-MCN@CNT via a simple co-pyrolysis, where their numbers and shapes can be easily regulated. It was found the optimal adsorption of metal ions into the precursors produced both single atom and few carbon-coated nanoparticles in M/N-MCN@CNT, which thus synergistically contributed the enhanced ORR performances, including large current density, low onset and half-wave potentials, as well as superior stability and methanol tolerance than those of commercial 20 wt% Pt/C. Moreover, M/N-MCN@CNT also demonstrated comparable oxygen evolution reaction activity to RuO 2 possibly due to the regulated metal species. This work provided a strategy to regulate the nanostructure and intrinsic active sites of carbon-based electrocatalysts.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Journal of Materials Chemistry A
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2019
·Vol. 7
·期 9
·4734-4743
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IF 10.733
Weiwei Han,Lulu Chen,Biao Ma,Jun Wang,Weiyu Song,Xiaobin Fan,Yang Li,Fengbao Zhang,Wenchao Peng
Herein, ultra-small molybdenum carbide nanodots encapsulated in nitrogen-doped porous carbon (Mo2C/N-PC) were synthesized by a facile one-pot method. Ammonium molybdate and low-cost starch were used as precursors of Mo2C and C. Ammonium nitrate was selected as a nitrogen dopant, which played multiple roles in the reduction of MoC to Mo2C, nitrogen doping of carbon, and formation of a porous structure with abundant structural defects, thus avoiding the high-temperature reduction by H2/Ar. The optimized Mo2C/N-PC hybrid has a remarkable catalytic activity towards the HER over a wide pH range (0–14). Especially, under alkaline conditions, an overpotential as small as −100 mV vs. RHE could be achieved at 10 mA cm−2, comparable to that of the best Mo2C-based materials. The density functional theory (DFT) calculations revealed that a decreased Gibbs free energy for H* adsorption (ΔGH*) could be obtained by combining Mo2C with N-PC, proving the synergistic enhancement mechanism of nitrogen doping and structural defects. This material contains no noble metals and can be easily synthesized on a large scale; thus, it should have significant potential in hydrogen production.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Liu Cui,Ziwei Bai,Ziqi Li,Zhaoyun Liu,Huanhuan Ma,Xiaoxu Chen,Kui Lin,Jia Hao,Yuanlu Cui,Fei Tian
Photocatalytic process using core–shell nano-catalyst is an efficient, eco-friendly, and cost-effective process for removal or minimize hazard of pollutants in waste water. Herein, a recyclable and robust Cu 2 O/Fe 3 O 4 @C/Cu core–shell nanocomposite with photocatalyst activities is designed based on the synergistic photocatalytic activities of Cu 2 O and Cu and the magnetic property and stability of Fe 3 O 4 @C. The Cu 2 O/Fe 3 O 4 @C/Cu is shown to act as nano-catalyst to almost completely convert 4-Nitrophenol (4-NP) to 4-aminophenol (4-AP) within 3 min by sufficient electrons in the electron-rich region formed under ultraviolet light irradiation. The Cu 2 O/Fe 3 O 4 @C/Cu nanocomposite shows a good stability, reusability and magnetic separation ability after five recycles. In addition, a photocatalytic mechanism of 4-NP reduction over this nanocomposite is proposed, and the roles of each nanocomponent of this nanostructure played in the synergistic enhancing photocatalytic performance via cascade reaction is demonstrated. This work suggests that Cu 2 O/Fe 3 O 4 @C/Cu nanocomposite with high activity, good stability and magnetically recyclability could be applied for the elimination of pollutants in wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Materials Today Communications
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2024
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IF 3.7
Guoan Zeng,Shichao Liao,Jinkun Liu,Yan Zhu,Toshiki Miyazaki
The germ-killing functions of silver and copper nanoparticles (NPs) were worthy of biomedical applications, but as heavy metals, NPs need to be more antimicrobial at lower doses to minimize hazards to human health, which requires more explorations on the new structures resulting from the compositing between two metals. In this study, self-assembled Cu-Ag bimetallic NPs were synthesized using a two-step reduction method. Results showed that both the Cu and Ag in Cu-Ag NPs existed as pure phases, the nanoparticles comprised ∼5 nm primary particles that self-assembled into ∼50 nm secondary particles surrounded with carbon-chain coatings. The larger secondary particles provided Cu-Ag with good particle dispersibility and chemical stability against deeper oxidation above ∼360 °C, while the smaller primary particles facilitated their suspensions in achieving a maximum inhibition ring of 10.01±0.25 mm and a minimum optical density (OD) of 0.11±0.01. Cu-Ag NPs demonstrated superior antimicrobial performance against all target strains, exhibiting synergistic enhancement through released active ions and reactive oxygen species (ROS). Cell viability ranged from 74.4 % to 95.4 % after co-culturing for 24 h, confirming that all synthesized nanometals were non-toxic to L929 cells at most concentrations. Increasing the suspension concentration enhanced antimicrobial activity while reducing cell viability. This conflict established an optimal Cu/Ag ratio of 10:4 and a concentration of 4 μg/mL, allowing Cu-Ag NPs to perform both broad-spectrum bactericidal activity and cell safety.
研究领域:
纳米材料
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生物医学
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材料科学
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2019
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IF 6.282
Tong Zhang,Qiancun Cheng,Zhiming Xu,Bo Jiang,Caifeng Wang,Yudong Huang
In the present research, carbon nanotubes (CNTs) and graphene oxide (GO) were used to enhance the composites interfacial properties synergistically by the strategy combining electrodeposition and chemical grafting. It was found that the interface between CF and matrix can be tuned by the binary addition of CNTs and GO. The interfacial shear strength (IFSS) of GO/CNTs synergistic reinforced composites based on this physical and chemical combination method via the “bridge” of Ag nanoparticles (NPs) exhibits 42.99% and 4.61% enhancement compared to that of achieved by electrophoretic deposition (physical method) and chemical grafting (chemical method), respectively. In addition, the IFSS has 69.68% and 19.54% improvement due to the synergistic effect of GO/CNTs compared to the untreated CF and GO single-reinforced CF composites. Therefore, it is a promising technique for developing multifunctional CF with the excellent interfacial performance.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Yiding Li,Qiang Zhang,Simin Shen,Siqi Wang,Liangliang Shi,Dequan Liu,Yujun Fu,Deyan He
Effectively limiting the shuttle effect is the key to improving the electrochemical performance of Li-S batteries. Here, the synthesis of WO 3 -WS 2 heterostructures is reported by electrospinning and in situ sulfurization strategies, combining the initial WO 3 nanoparticles with the sulfurization product WS 2 . It was found that the obtained bifunctional heterostructures enhance the electrolyte wettability, optimize intermediate regulation performance, accelerate Li + /e − diffusion, and thus exhibit excellent electrochemical characteristics in Li-S batteries. Through experiments and density functional theory (DFT) calculations, the WO 3 -WS 2 heterostructures were considered as a coupled creative solution with multiple advantages. Different from the batteries using single-component or single-configuration catalyst, the prepared Li-S batteries with the WO 3 -WS 2 heterostructures exhibited synergistic enhanced electrochemical performance and high-temperature crushing resistance. Even under severe conditions, including high sulfur loading (10.3 mg cm −2 ), lean electrolyte (5.8 μL mg −1 ), high current density (7.0 A g −1 ), extended cycling (1600 cycles), and high temperature (90 °C), the representative battery exhibited stable cycling performance.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Water Cycle
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2025
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IF 8.7
Xiaobin Zhou,Chenyu Zhou,Min Huang,Yingxue Wang,Mengxin Zhao,Yanan Zhang,Yinming Fan,Yinian Zhu,Zongqiang Zhu
Nano zero-valent iron (nZVI) has garnered significant attention as an excellent environmental remediation material for Cr(Ⅵ) adsorption. However, its practical utilization is significantly impeded by inherent limitations, notably its propensity for aggregation and susceptibility to oxidation. This study proposed an innovative approach that using zeolite imidazole framework-8 (ZIF-8) as a cladding material for encapsulating nZVI particles. This encapsulation served to safeguard nZVI from oxidation and agglomeration. Furthermore, the ZIF-8 coating possessed suitable pore channels, allowing the migration of Cr(VI) ions towards the nZVI’s surface, thereby enabling efficient reduction. The ZIF-8-coated nZVI composite (ZIF-8@nZVI) achieved a remarkable Cr(VI) removal efficiency of 98.43% under the optimized conditions. After 10 days of exposure in the aqueous solution, the efficiency remained above 84%. The uptake of Cr(VI) by ZIF-8@nZVI proceeded via a chemisorption pathway, inherently spontaneous and endothermic in character. The mechanism analysis indicated that ZIF-8 and nZVI exhibited synergistic enhancement effect on Cr(VI) removal. The protonated nitrogen groups within ZIF-8 facilitated the swift diffusion of negatively charged Cr(VI) ions to the surface of ZIF-8@nZVI. Once adsorbed, Cr(VI) was directly reduced to Cr(III) by Fe 0 , which in turn underwent oxidation to Fe(II)/Fe(III). Notably, Fe(II) indirectly reduced Cr(VI) to Cr(III), while itself being oxidized to Fe(III). Consequently, the resulting Cr(III) ions co-precipitated with Fe(III), forming hydroxide complexes that were eliminated from the aqueous environment. Overall, this research demonstrated the practicability of employing ZIF-8 as a coating material to develop highly efficient nZVI-based adsorbents and highlighted the potential of ZIF-8@nZVI in addressing Cr(VI) contamination challenges.
研究领域:
环境修复
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材料科学
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化学工程
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
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2025
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IF 4.7
Jing Xiong,Haibo Feng,Li Li
High-performance damping materials require effective utilization of damping source units and optimized mechanisms to maximize mechanical energy dissipation. In this study, a multiscale synergistic reinforcement strategy is developed to achieve an optimal balance between stiffness and damping by integrating nanoscale dynamic bonds and microscale stiffening effects. At the nanoscale, disulfide bonds are introduced to construct vitrimer networks, serving as additional damping source units. At the microscale, glass fibers act as rigid fillers to enhance stiffness while inducing matrix deformation-driven damping. The damping excitation mechanism of this hierarchical composite structure is elucidated through finite element analysis. Experimental results demonstrate that the prepared composites exhibit an ultrahigh loss modulus of up to 1148 MPa, significantly exceeding that of conventional engineering materials. This work provides a novel design approach for multiscale composites, facilitating the structural integration of high-performance damping materials for advanced manufacturing applications. Highlights Multiscale synergistic reinforcement strategy is proposed for ultrahigh specific damping. Ultrahigh loss modulus of 1148 MPa achieved in hierarchical composites. Multiscale design balances stiffness and damping via dynamic bonds and glass fibers. Disulfide bonds enhance damping via bond breaking and reformation. Glass fibers boost stiffness while driving matrix deformation to dissipate.
研究领域:
材料科学
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工程力学
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产品关联
DOI
高影响因子
Polymers
·
2020
·Vol. 12
·期 12
·3008
·
IF 3.426
Menghui Wan,Haodong Zhao,Lichao Peng,Xueyan Zou,Yanbao Zhao,Lei Sun
In this paper, we propose a facile and cost-effective electrospinning technique to fabricate surface-enhanced Raman scattering (SERS) substrates, which is appropriate for multiple analytes detection. First of all, HAuCl4∙3H2O was added into the TEOS/PVP precursor solution, and flexible SiO2nanofibers incorporated with gold nanoparticles (SiO2@Au) were prepared by electrospinning and calcination. Subsequently, the nanofibrous membranes were immersed in the tannic acid and 3-aminopropyltriethoxysilane solution for surface modification through Michael addition reaction. Finally, the composite nanofibers (Ag@T-A@SiO2@Au) were obtained by the in-situ growth of Ag nanoparticles on the surfaces of nanofibers with tannic acid as a reducing agent. Due to the synergistic enhancement of Au and Ag nanoparticles, the flexible and self-supporting composite nanofibrous membranes have excellent SERS properties. Serving as SERS substrates, they are extremely sensitive to the detection of 4-mercaptophenol and 4-mercaptobenzoic acid, with an enhancement factor of 108. Moreover, they could be utilized to detect analytes such as pesticide thiram at a low concentration of 10−8mol/L, and the substrates retain excellent Raman signals stability during the durability test of 60 days. Furthermore, the as-fabricated substrates, as a versatile SERS platform, could be used to detect bacteria ofStaphylococcus aureuswithout a specific and complicated bacteria-aptamer conjugation procedure, and the detection limit is up to 103colony forming units/mL. Meanwhile, the substrates also show an excellent repeatability of SERS response forS. aureusorganelles. Briefly, the prime novelty of this work is the fabrication of Au/Ag bimetallic synergetic enhancement substrates as SERS platform for versatile detection with high sensitivity and stability.Keywords:Ag/Au nanoparticles;synergetic enhancement;electrospun nanofibers;SERS substrates;versatile detection
研究领域:
材料科学
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纳米技术
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分析化学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）