CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yan Zhao,Linfeng Hu,Shuo Liu,Yuzheng Liu,Weihong Guo
Metal-ion coordination jointly regulates hydrogel and TA@rGO networks. • PTGS-Fe 3+ reaches 1.10 MPa tensile and 3.33 MPa compressive strength. • Conductivity increases to 17.8 S m −1 despite stronger crosslinking. • Machine learning recognizes hydrogel states and nine human motions. The development of flexible sensors requires hydrogel materials with high mechanical strength, electrical conductivity, and multifunctional adaptability. However, achieving simultaneous enhancement of mechanical and electrical properties remains challenging due to the trade-off between network reinforcement and charge transport. Herein, a modular conductive hydrogel strategy based on metal-ion coordination regulation is proposed. A tannic acid-reduced graphene oxide (TA@rGO) conductive filler is incorporated into a polyacrylamide/sodium alginate (PAM/SA) double-network hydrogel, and the resulting PAM/TA@rGO/SA hydrogel is denoted as PTGS. Subsequently, dynamic coordination interactions between Cu 2+ /Fe 3+ ions and oxygen-containing groups of SA, as well as polyphenolic sites of TA, are utilized to prepare PTGS-Cu 2+ and PTGS-Fe 3+ hydrogels with tunable properties. Metal-ion coordination significantly improves the mechanical performance, with PTGS-Fe 3+ achieving tensile and compressive strengths of 1100 kPa and 3330 kPa, respectively. Unlike conventional ion-conducting hydrogels, where enhanced crosslinking generally suppresses conductivity, TA@rGO-mediated electronic pathways allow metal-ion coordination to simultaneously improve conductivity, reaching 17.8 S m −1 for PTGS-Fe 3+ . Moreover, different coordination states endow the hydrogels with distinct sensing characteristics, including wide-range strain detection, balanced sensitivity and detection range, and high sensitivity at low strain. Combined with machine learning algorithms, the hydrogels enable material-state recognition and accurate classification of diverse human motions. This work provides a modular strategy for designing multifunctional conductive hydrogels with tunable sensing capabilities.
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PROGRESS IN ORGANIC COATINGS
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2026
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IF 7.9
Chen Wang,Yue Li,Wenlin Yuan,Jingting Yang
The incorporation of functional fillers into epoxy coatings is an effective approach to impart specific properties; however, the random distribution of fillers within polymer matrices often limits their utilization efficiency. Herein, a magnetic core–shell nanocontainer (TA@Fe 3 O 4 ) was rationally designed and fabricated by encapsulating Fe–tannic acid (Fe–TA) complexes within hollow mesoporous Fe 3 O 4 nanospheres. In this architecture, Fe 3 O 4 serves dually as a magnetically responsive core for field-directed enrichment and as an intrinsic carrier for tannic acid (TA), thereby eliminating the need for additional carrier engineering. The surface Fe–TA complexes undergo pH-responsive coordination transformation under acidic conditions, enabling the controlled release of TA molecules. The released TA subsequently chelates with the metal substrate to form a compact passivation layer, providing active corrosion inhibition. Magnetic-field guidance significantly shortens the diffusion path of TA, thereby enhancing its delivery efficiency to corrosion-prone regions. Electrochemical impedance spectroscopy revealed a substantial improvement in corrosion resistance: the |Z| 0.01Hz value of the magnetically modulated coating (M-TF/EP) reached 1.41 × 10 10 Ω·cm 2 , approximately one order of magnitude higher than that of non-modulated coating (TF/EP). This work presents a straightforward yet highly effective strategy that integrates magnetic targeting and pH- triggered inhibitor release within a single nanostructure by directly coating the inhibitor onto a magnetic carrier, thereby enabling active and intelligent corrosion protection without complex synthesis procedures.
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Biomaterials Advances
·
2026
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IF 6.7
Jia Chen,Minghui He,Junxiao Li,Yunqi Shen,Xinkun Shen,Min Lai
Excessive oxidative stress and associated inflammation significantly impair bone regeneration around implants. To address this, we developed a novel therapeutic strategy based on metal-polyphenol nanoparticles self-assembled from tannic acid (TA) and manganese ions (Mn 2+ ). These Mn-TA nanoparticles (Mn-TA NPs) were subsequently incorporated into a gelatin methacryloyl (GelMA) hydrogel, which was then applied as a coating onto TiO 2 nanotube (TNT) surfaces by spin coating. The resulting modified titanium was designated as TNT-GelMA@NPs. Surface and interfacial characterization using scanning electron microscopy (SEM), atomic force microscopy (AFM), contact angle measurement, spectroscopic ellipsometry and nanoindentation confirmed the successful fabrication of a uniform, adherent hydrogel coating on the TNT surfaces. The coating reduced surface roughness while maintaining hydrophilicity, and achieved sustained Mn 2+ release, as verified via inductively coupled plasma atomic emission spectroscopy (ICP-AES). TNT-GelMA@NPs exhibited potent ROS scavenging capacity, protected mitochondrial membrane potential, and upregulated antioxidant genes. Moreover, it promoted macrophage polarization from pro-inflammatory M1 to anti-inflammatory M2 phenotype, thereby creating a favorable osteoimmune microenvironment. Additionally, it promoted osteogenic differentiation by increasing ALP activity, mineralization, and the expression of osteogenic genes. In a rat femoral defect model, TNT-GelMA@NPs implants reduced oxidative damage and inflammation, while enhancing bone formation, as evidenced by histological staining and micro-CT analysis. This study demonstrates that the Mn-TA NP-reinforced hydrogel coating acts as a multifunctional biointerface with excellent potential for advanced implant surface engineering.
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PubMed
高影响因子
FIBERS AND POLYMERS
·
2025
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IF 2.3
Zhang Shuo,Guo Mengyao,Wu Jiaqing,Wang Ying,Zhang Xin
A novel spinning method that integrates electrospun nanofiber strips into yarn structures has been developed to produce multifunctional yarns. The resulting yarn exhibited a core-sheath structure, with a core composed of tannic acid-modified magnesium hydroxide/thermoplastic polyurethane (TA@MH/TPU) nanofiber strip, sheathed by either pure cotton or cotton/sodium alginate blended fibers. The TA modification improved the dispersion of MH within the TPU matrix, leading to enhanced membrane strength compared to unmodified MH/TPU at equal loadings. The film containing 7% TA@MH/TPU demonstrated optimal mechanical properties (breaking strength of 1.43 MPa, elongation of 122.93%), flame retardancy (limiting oxygen index of 27.1%), and antibacterial efficacy killing ratios of 80.87% against E. coli and 85.07% against S. aureus . Yarns fabricated with this film, the TA@MH/TPU-cotton (CMSCY) retained the antibacterial functionality (67.48% against E. coli and 79.05% against S. aureus ), and the TA@MH/TPU-cotton/sodium alginate (C/SAMSCY) achieved the flame retardancy with a limiting oxygen index of 27.8%. Notably, the CMSCY yarn showed a high tensile strength of 1.53 MPa, which was 15 times that of the TA@MH/TPU nanofiber film, addressing the application limitations of nanofiber membranes caused by their low mechanical strength. Given that electrospun membranes can be readily functionalized, this spinning method offers a promising strategy for producing composite yarns, particularly for developing multifunctional textile fabrics.
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Journal of Energy Chemistry
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2023
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IF 13.1
Bayu Admasu Beshiwork,Xinyu Wan,Min Xu,Haoran Guo,Birkneh Sirak Teketel,Yu Chen,Jun Song Chen,Tingshuai Li,Enrico Traversa
The sluggish kinetics of the electrochemical oxygen reduction reaction (ORR) in intermediate-temperature solid oxide fuel cells (IT-SOFCs) greatly limits the overall cell performance. In this study, an efficient and durable cathode material for IT-SOFCs is designed based on density functional theory (DFT) calculations by co-doping with Nb and Ta the B-site of the SrFeO 3− δ perovskite oxide. The DFT calculations suggest that Nb/Ta co-doping can regulate the energy band of the parent SrFeO 3− δ and help electron transfer. In symmetrical cells, such cathode with a SrFe 0.8 Nb 0.1 Ta 0.1 O 3− δ (SFNT) detailed formula achieves a low cathode polarization resistance of 0.147 Ω cm 2 at 650 °C. Electron spin resonance (ESR) and X-ray photoelectron spectroscopy (XPS) analysis confirm that the co-doping of Nb/Ta in SrFeO 3− δ B-site increases the balanced concentration of oxygen vacancies, enhancing the electrochemical performance when compared to 20 mol% Nb single-doped perovskite oxide. The cathode button cell with Ni-SDC|SDC|SFNT configuration achieves an outstanding peak power density of 1.3 W cm −2 at 650 °C. Moreover, the button cell shows durability for 110 h under 0.65 V at 600 °C using wet H 2 as fuel.
研究领域:
材料科学
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电化学
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能源工程
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无机非金属材料
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催化化学
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Junjie Fu,Afei Zhang,Dongxing Kou,Zewen Xiao,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yafang Qi,Zhi Zheng,Sixin Wu
One important issue limiting the development of Cu 2 ZnSn(S,Se) 4 (CZTSSe) solar cells is the severe recombination loss at CZTSSe/Mo(S,Se) 2 /Mo back contact, primarily arising from the non-matched potential barrier and inferior electric contact between absorber and weak n -type Mo(S,Se) 2 interfacial layer. It is expected that a p-type Mo(S,Se) 2 can effectively improve the hole extraction and enhance the device performance. In this work, we propose a plausible direction to build up an electrically benign back surface field by in-situ doping Mo(S,Se) 2 with group VB elements (TM = V, Nb and Ta). It is turned out that the generated V Mo , Nb Mo , or Ta Mo shallow acceptors could convert Mo(S,Se) 2 from weak n -type to p-type conductivity and increase its work function ( W F ) and hole concentration. With the contact of p-type absorber ( W F,absorber < W F,Mo(S,Se)₂ ), a benign ohmic contact with favorable downward band bending is formed, thereby accelerating the holes extraction and minimizing interface recombination loss. With significant gains in open-circuit voltage ( V oc ) and fill factor (FF), the Mo(S,Se) 2 :Ta device finally increases the efficiency from 10.82 % to 12.72 %. This convenient in-situ Mo(S,Se) 2 doping strategy is different from previous complicated or unstable cases and should serve as a basis for high-quality back contact engineering in kesterite photovoltaics.
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Chunmei Gao,Peng Zou,Shifeng Ji,Yunqing Xing,Jiaonan Cai,Jinjian Wu,Tianyang Wu
Herein, we report a preparation method based on a modified zeolite imidazolate skeleton loose nanofiltration membrane used to achieve the efficient separation of salt and dye from dye wastewater. In this study, negatively charged hydrophilic TA@ZIF-8 was synthesized using a tannin surface-functionalization-assisted etching process by tannic acid (TA). A novel, highly negatively charged, and loose nanofiltration membrane was then prepared by adding TA@ZIF-8 to a polyethyleneimine (PEI) and tricarboxylic acid (TMA) crosslinking system. The addition of TA@ZIF-8 nanoparticles not only changed the degree of crosslinking of PEI/TMA but also provided a preferential channel for water molecules, thereby improving the flux of the membrane. Then, the success of TA@ZIF-8 NPs and membranes preparation were verified by SEM, XRD, FT-IR, TGA , BET, XPS and other methods. The results showed that the optimal preparation conditions were 0.020 wt% TA@ZIF-8 loading, and the contact angle of the membranes decreased from 79.8° to 53.7°. The water flux of the membrane is 81 L·m −2 ·h −1 ·bar −1 , which is 1.5 times that of PEI/TMA membrane. In addition, TA@ZIF-8–2 membrane not only has high rejection rate for Methyl blue (98.7 %), Toluidine blue (89.6 %), Cr 6+ (91.2 %), but also maintains high transmittance for NaCl and Na 2 SO 4 . Besides, the separation performance of the membrane was stable for a long time in a mixed solution of dye and salt and excellent antifouling performance. Therefore, the loose TA@ZIF-8/PEI/TMA nanofiltration membrane has broad application prospects in printing and dyeing wastewater treatments .
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SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Hongli Xie,Binghong Chen,Hongjun Lin,Renjie Li,Liguo Shen,Genying Yu,Lining Yang
Continuous increasing discharge of industrial oily wastewater and frequent occurrence of oil spill accidents have taken heavy tolls on global environment and human health. Organic-inorganic modifications can fabricate superhydrophilic/submerged superoleophobic membranes for efficient oil-water separation/treatment though they still suffer from complex operation, non-environmental friendliness, expensive cost or uneven distribution. Herein, a new strategy regarding tannic acid (TA)-Ti(IV) coating and CaCO 3 -based biomineralization through simple inkjet printing processes was proposed to modify polyvinylidene fluoride (PVDF) membrane, endowing the membrane with high hydrophilicity (water contact angle (WCA) decreased from 86.01° to 14.94°) and underwater superoleophobicity (underwater contact angle (UOCA) > 155°). The optimized TA-Ti(IV)-CaCO 3 modified membrane possessed perfect water permeation to various oil/water emulsions (e.g., 355.7 L·m −2 ·h −1 for gasoline emulsion) under gravity with superior separation efficiency (>98.8 %), leading the way in oil/water emulsion separation performance of PVDF membranes modified with polyphenolic surfaces to our knowledge. Moreover, the modified membrane displayed rather high flux recovery after eight cycles of filtration while maintaining the original excellent separation efficiency. The modification process proposed in this study is almost independent of the nature of the substrate, and meets the demand for simple, inexpensive, rapid preparation of highly hydrophilic antifouling membranes, showing abroad application prospect for oil-water emulsion separation/treatment.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
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IF 7.392
Jiaxin Yang,Deng Wang,Jihui Wang,Wenbin Hu
A novel self-healing composite coating was fabricated on magnesium alloy by using polycaprolactone (PCL) as resin matrix and iron-based metal-organic framework MIL-53 modified with tannic acid (TA) as function filler. The surface morphology, structure and wettability of composite coating were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) and sessile water droplet static contact angle. The corrosion resistance and healing performance of PCL coatings was determined by electrochemical impedance spectroscopy (EIS) and photothermal tests. Results indicate that MIL-53@TA/PCL coating possesses a flatter surface, a higher corrosion resistance and better photothermal effect than that of blank PCL coating and MIL-53/PCL coating. Under the near-infrared (NIR) laser irradiation with the wave length of 808 nm, the scratched MIL-53@TA/PCL coating could be healed within 10 min because of the excellent photothermal conversion ability of MIL-53@TA component.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Xiaoyan Duan,Kaiqiang Wang,Lei Wang,Limin Cao,Jianxin Sui,Hong Lin
In this study, a new metal-organic framework adsorbent (UIO-66-NH 2 @TA) which can efficiently and selectively capture lead ions was developed by functionalizing UIO-66-NH 2 with tannic acid (TA) by Michael addition reaction. The structural and morphological properties of the produced adsorbent, as well as its adsorption mechanism for Pb (II) were discussed. The maximum adsorption capacity of Pb (II) was 475.78 mg/g at pH 5.0, which was significantly higher than the adsorption capacity of many adsorbents reported in the literature. In addition, the adsorption isotherms and kinetics conformed to the Langmuir model and pseudo-second-order kinetic model , respectively. The results indicated that the adsorptive behavior of the adsorbent mainly depended on the active sites on the surface of the adsorbents. The UIO-66-NH 2 @TA showed favorable selectivity toward Pb (II) against the interference of coexisting metal ions . It was found that the excellent Pb (II) removal performance of UIO-66-NH 2 @TA was mainly attributed to the synergistic effect of physical adsorption and chemisorption . Moreover, the UIO-66-NH 2 @TA showed extraction efficiencies of 88.01%, 82.44%, 80.20% and 74.99% for Pb (II) with initial concentration of 100 mg/L in river water, sea water, peach juice drink, and grape juice, respectively. This work proved that the UIO-66-NH 2 @TA had a wide application prospect in the field of Pb (II) treatment.
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CATALYSIS LETTERS
·
2021
·Vol. 152
·期 8
·2524-2532
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IF 3.186
Jiang Haoxi,Jiang Angjiong,Gao Qiang,Yang Guochao,wang Lingtao
In this work, Ta was firstly reported as an efficient promoter of MgO–SiO 2 for the conversion of ethanol and acetaldehyde to 1,3-butadiene. The doping of Ta into MgO–SiO 2 forms Ta–O–Si bonds and generates more strong Lewis acid sites, which not only promote the aldol condensation reaction but also significantly facilitate the Meerwein–Ponndorf–Verley reduction, the total conversion around 80% which drops to 65% after 24 h. In addition, the catalyst showed desirable stability in 24 h long-term stability evaluation, the selectivity remained stable at 80%. Graphic Abstract
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
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IF 3.99
Yajun Deng,Guang-Ling Song,Dajiang Zheng,Yanmei Zhang
The combination of antifouling and biocidal methods is an efficient antimicrobial strategy to alleviate environmental biofouling. Herein, a functional organic/inorganic hybrid coating with integrated terpolymer and hybrid Ag@TA-SiO 2 nano spheres was designed and fabricated for antifouling purpose for the first time. The silicon-containing terpolymer (GHM) was fabricated via a simplified free radical co-polymerization process with glycidyl methacrylate (GMA), 2-hydroxyethyl methacrylate (HEMA) and 3-(methacryloxypropyl) trimethoxysilane (MPS). It was expected that the (3-aminopropyl) triethoxysilane (KH550) would become immobilized at the epoxide ring of the GMA and eventually crosslinked, acting as a backbone for the final polymeric coating (PGHMK). Meanwhile, Ag nano-particles were decorated with tannic acid (TA) to have a composite surface structure and loaded with silica (SiO 2 ) to form raspberries. The fabrication of the decorated and loaded antibacterial nano particle Ag@TA-SiO 2 was environmental-friendly, high efficiency and low-cost. The PGHMK coating was expected to act as an effective antifouling barrier, and the embedded Ag@TA-SiO 2 as a functional biocide carrier to collectively inhibit biofouling. To ensure the designed fabrication processes and the products, the microstructural, compositional, morphological changes of the copolymers and nanoparticles were characterized by means of FT-IR, 1 H nuclear magnetic resonance, X-ray photoelectron spectroscopy and atomic force microscopy. The antifouling and bactericidal properties of the composite coatings were also systematically evaluated through measuring the adsorption of protein, growth of bacteria and attachment of microalgae on the coating surface. The results indicated that the coating suppressed 98.6 % of protein adsorption, and its antibacterial efficiency reached 99.1 % and 82.7 % for E. coli and S. aureus , respectively. The coating could also remarkably reduce the attachment of microalgae N. Closterium and Dicrateria zhanjiangensis by 93.5 % and 97.6 %, respectively. It is envisioned that the composite coating may provide a promising antifouling and antibacterial surface for marine engineering structures.
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