Advanced Materials Technologies
·
2024
·
IF 6.4
Xiujie Guo,Wenjing Qin,Changshun Gu,Xinxin Li,Mengyao Chen,Hanlin Zhai,Xiangchuan Zhao,Hengchao Liu,Boxin Zhao,Yan Zhang,Yanli Wang,Shougen Yin
Conductive hydrogel is considered a promising wearable sensor material. Developing flexible conductive hydrogel sensors with stretchability, adhesion, and stability remains challenging. In this study, a transparent, self-adhesive, antifreeze, anti-UV, stretchable, conductive, and reusable hydrogel with polyacrylamide/glycerol/gelatin/tannic acid/Fe 3+ (PGGT-Fe 3+ ) structure is successfully constructed through a simple one-pot polymerization method. The PGGT-Fe 3+ hydrogel is composed of dual networks of polyacrylamide and gelatin for organic cross-linking, using water/glycerol as the dispersion medium, and incorporates a viscous substance: tannic acid, and a conductive substance: metal ions (Fe 3+ ). Due to the introduction of the abundant amino, carboxylic acid, and hydroxyl functional groups on gelatin and tannic acid, the PGGT-Fe 3+ hydrogel exhibits excellent and repeatable adhesion capabilities on various surfaces (including glass, metal, plastic, and pigskin) with maximum adhesion strength of 98 kPa when attached to pigskin. Furthermore, based on the stable conductive network and high conductivity, the hydrogel not only exhibits strain sensitivity, fast response, and stability but also can stably collect epidermal bio signals. In conclusion, this work provides a new approach to the design and development of next-generation multifunctional conductive hydrogels and opens up vast possibilities for their applications in the flexible electronics field.
研究领域:
材料科学
·
生物医学工程
·
传感器技术
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DOI
高影响因子
FOOD HYDROCOLLOIDS
·
2026
·
IF 13.8
Shiqi Yang,Donglei Luan,Yahui Wen,Bin Zhao,Tianxi Yang,Juan Yan
Ready-to-eat cooked meat products contain high levels of moisture and nutrients, making them highly vulnerable to microbial contamination and subsequent quality degradation during storage. Therefore, the development of green packaging materials that integrate active preservation functions with freshness indication is of great significance. In this work, a carboxymethyl chitosan (CMCS)/tannic acid (TA)-Fe 3+ coordination hydrogel (CMCS/TA-Fe) film with favorable biocompatibility and degradability was fabricated through a facile coordination-driven self-assembly strategy, leveraging the multiple interactions among CMCS, TA, and ferric ions (Fe 3+ ). The introduction of the TA-Fe 3+ metal-polyphenol markedly enhanced the mechanical performance of the film, increasing its storage modulus (G′) to approximately 2.4 × 10 4 Pa, and endowed it with efficient photothermal conversion capability. Under near-infrared irradiation at 808 nm, the film surface temperature rapidly increased to 103 °C within 15 min, enabling complete inactivation of Escherichia coli and Staphylococcus aureus . In addition, the dynamic coordination structure of TA-Fe 3+ exhibited pH-responsive chromatic behavior in a model system, resulting in distinct and reversible color changes under different pH conditions. These color variations suggest the potential of the CMCS/TA-Fe film as a visual indicator for freshness-related pH changes. When applied to the refrigerated preservation of cooked chicken breast, the CMCS/TA-Fe film combined with near-infrared irradiation effectively inhibited microbial proliferation, delayed pH increase, reduced moisture loss, and preserved textural and sensory quality. Overall, this study demonstrates a multifunctional and environmentally friendly hydrogel film that integrates photothermal antibacterial activity with a pH-responsive color indication function, offering a promising strategy for intelligent food packaging applications.
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高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Yanhua Zhang,Jiadong Deng,Dongwei Hu,Fei Chen,Qiang Shen,Lianmeng Zhang,Shijie Dong
The Li + concentration and Li + transport channel size of garnet-type solid electrolyte Li 7 La 3 Zr 2 O 12 are the two key factors associated with the improvement of Li ionic conductivity . Through precise control of the Li + concentration and the Li + transport channel size by Ta-doping (Li 7-X La 3 Zr 2-X Ta X O 12 , X = 0.2–1.0), synergistic regulation of the two factors is achieved. Results show that the optimum Li + concentration seems to be at about 6.31 where the Li + occupancy in LiO 6 is high and the Li + arrangement in LiO 4 is disordering. With the Li + concentration higher than 6.31, the occupancy in LiO 4 sites remains constant but the Li + arrangement in LiO 4 becomes more and more ordering. At higher Li + concentration of 6.52, Li + arrangement becomes certain of ordering which should have reduced the grain conductivity, however, the grain conductivity is still as high as 9.84 × 10 −4 S cm −1 . This indicates that LLZO with this Li + concentration have favorable Li + transport channel size. The optimum Li + transport channel size is about 12.95 ± 0.01 Å. At Li + concentration of 6.31, the proper Li + concentration is the main factor for the high grain ionic conductivity of 10.1 × 10 −4 S cm −1 . While at Li + concentration of 6.52, the suitable Li + transport channel size is the main factor for the high grain ionic conductivity. In conclusion, the high grain ionic conductivity at Li + concentration of 6.31–6.52 is due to the synergistic regulation of Li + concentration and Li + transport channel size.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
MATERIALS LETTERS
·
2026
·
IF 2.6
Fei Sheng,Xiaomei Liu,Yi Liu,Botao Zhang,Hua Li
Titanium alloy implants face persistent risks of bacterial infection and insufficient early osseointegration. In this work, a hierarchical micro/nano-structured hydroxyapatite (HA)-ε-polylysine (PL)-tannic acid (TA) composite coating was fabricated on sandblasted titanium alloy via a controlled drop-casting strategy. Surface roughness increased with deposition cycles and was tuned from 1.91 to 5.01 μm after eight cycles. The HA-PL/TA 8 coating exhibited excellent antibacterial activity (> 99.99%) against both Staphylococcus aureus and Escherichia coli , mainly attributed to the intrinsic antibacterial properties of PL and TA. The coating maintained structural integrity and antibacterial performance after 7-day PBS immersion. Meanwhile, the bioactivity of HA and hierarchical structure promoted MC3T3-E1 osteoblast adhesion and proliferation. This multifunctional coating provides a simple strategy for constructing antibacterial and cytocompatible interfaces on titanium implants.
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高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jiping Zhao,Youlong Xu,Xiangdong Ding
Although tantalum (Ta) has been studied experimentally for many years as an important anti-corrosion material, it remains a challenge to accurately predict its corrosion anisotropy theoretically. In this work, we proposed an ab initio model considering the solvation effect to investigate crystal orientation-dependent corrosion behavior of Ta. The changes in electron transfer number and energy of a tantalum atom during its dissolution from the surface in vacuum and explicit methanol molecules were studied, respectively. Based on the anodic dissolution activation energy considering solvation effect, the corrosion current densities of (200), (110) and (211) surfaces were calculated to be 3.39 × 10 −8 A/cm 2 , 2.24 × 10 −11 A/cm 2 and 2.95 × 10 −11 A/cm 2 , respectively. The results are consistent with the variation trend of peak intensity in the XRD pattern. More importantly, the corrosion current density we predicted based on the percentage of these crystalline surfaces in the polycrystalline tantalum foil is 10 −7.25 A/cm 2 , which is very close to the experimental value (8.70 × 10 −8 A/cm 2 ). Therefore, this result is capable of providing a theoretical basis for the electrochemical machining of Ta and a new idea for studying the anodic dissolution behavior of other metals or alloys in solution.
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高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 12
·983
·
IF 3.504
Shiman He,Yuying Meng,Yangfei Cao,Senchuan Huang,Jingling Yang,Shengfu Tong,Mingmei Wu
TiO2is one of the most attractive semiconductors for use as a photoanode for photoelectrochemical (PEC) water oxidation. However, the large-scale application of TiO2photoanodes is restricted due to a short hole diffusion length and low electron mobility, which can be addressed by metal doping and surface decorating. In this paper we report the successful synthesis of hierarchical Ta doped TiO2nanorod arrays, with nanoparticles on the top (Ta:TiO2), on F-doped tin oxide (FTO) glass by a hydrothermal method, and its application as photoanodes for photoelectrochemical water oxidation. It has been found that the incorporation of Ta5+in the TiO2lattice can decrease the diameter of surface TiO2nanoparticles. Ta:TiO2-140, obtained with a moderate Ta concentration, yields a photocurrent of ∼1.36 mA cm−2at 1.23 V vs. a reversible hydrogen electrode (RHE) under FTO side illumination. The large photocurrent is attributed to the large interface area of the surface TiO2nanoparticles and the good electron conductivity due to Ta doping. Besides, the electron trap-free model illustrates that Ta:TiO2affords higher transport speed and lower electron resistance when under FTO side illumination.Keywords:hierarchical TiO2;Ta doping;charge separation;photoelectrochemical water oxidation
研究领域:
材料科学
·
能源科学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Meng He,Honghong Sun,Haixiang Sun,Xiujie Yang,Peng Li,Q. Jason Niu
Conventional nanofiltration membrane fabrication generally includes the usage of toxic organic solvent that poses threats to the environment and public health. Herein, we explored preparing nanofiltration membrane through a non-organic solvent method utilizing the highly reactive natural product, tannic acid (TA), along with cyclohexane-1,4-diamine (CHD). Fabrication process was carried out through sequential immersion of a polyethersulfone (PES) support in two aqueous monomer phases. The absence of a solvent interface facilitated the diffusion and mixing of the two monomers, and the highly reactive quinone derivative of TA enabled the rapid film formation via Michael addition and Schiff base formation. Membrane performance was optimized through investigation of fabrication parameters. The TA-CHD membrane exhibited a negatively charged surface, with a molecular weight cut-off (MWCO) of 600 Da. The membrane prepared at optimal conditions showed approximate 97% and 50.7% rejections towards Na 2 SO 4 and NaCl, with a water flux at approximate 35 L m −2 h −1 (10 bar). Fouling behaviour of the TA-CHD membrane was studied and a chemical cleaning test under two extreme pH was performed to demonstrate the chemical stability. The proposed non-organic solvent method here provides an eco-friendly way to utilize the potential of polyphenol natural products in water purification membrane preparation.
研究领域:
环境科学
·
材料科学
·
水处理
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2023
·Vol. 52
·期 11
·7184-7192
·
IF 2.1
Yang Shengyan,Chang Niannian,Han Mengyuan,Zhang Yang
Pb-free piezoelectric ceramic materials (K 0.48 Na 0.48 Li 0.04 )(Nb 0.92 Ta 0.08− x Sb x )O 3 (KNLNTS) were designed and prepared. The effects of varied Sb/Ta doping on the physical structure, surface morphology, and electrical characteristics of ceramics were also studied. The perovskite structure is present in all of the doped ceramic samples without any secondary phase (when x < 0.05). All of the doped ceramic samples have a Curie temperature ( T C ) above 300°C. At the same time, the orthorhombic–tetragonal phase transition temperature ( T O–T ) is pushed closer to ambient temperature. Doping with Sb/Ta/Li changed the electrical characteristics of the samples and increased their piezoelectric properties. At x = 0.03, the KNLNTS sample has the best piezoelectric properties: d 33 = 215 pC/N, Pr = 26.08 μC/cm 2 , T C = 342.6°C.
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高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2023
·
IF 9.8
Guohui Shi,Bao Zhu,Qi Wu,Jiayin Dai,Nan Sheng
Initially considered a “safe” substitute for perfluorooctanoic acid (PFOA), hexafluoropropylene oxide trimer acid (HFPO-TA) has been extensively used in the production of fluoropolymers for several years, leading to its environmental ubiquity and subsequent discovery of its significant bio-accumulative properties and toxicological effects. However, the specific impact of HFPO-TA on females, particularly those who are pregnant, remains unclear. In the present study, pregnant mice were exposed to 0.63 mg/kg/day HFPO-TA from gestational day (GD) 2 to GD 18. We then determined the potential effects of exposure on gut microbiota and fecal metabolites at GD 12 (mid-pregnancy) and GD 18 (late pregnancy). Our results revealed that, in addition to liver damage, HFPO-TA exposure during the specified window altered the structure and function of cecal gut microbiota. Notably, these changes showed the opposite trends at GD 12 and GD 18. Specifically, at GD 12, HFPO-TA exposure primarily resulted in the down-regulation of relative abundances within genera from the Bacteroidetes and Proteobacteria phyla, as well as associated Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. With extended exposure time, the down-regulated genera within Proteobacteria became significantly up-regulated, accompanied by corresponding up-regulation of human disease- and inflammation-associated pathways, suggesting that HFPO-TA exposure can induce intestinal inflammation and elevate the risk of infection during late pregnancy. Pearson correlation analysis revealed that disturbances in the gut microbiota were accompanied by abnormal fecal metabolite. Additionally, alterations in hormones related to the steroid hormone biosynthesis pathway at both sacrifice time indicated that HFPO-TA exposure might change the steroid hormone level of pregnant mice, but need further study. In conclusion, this study provides new insights into the mechanisms underlying HFPO-TA-induced adverse effects and increases awareness of potential persistent health risks to pregnant females.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Lin Zhu,Jin Zhang,Fang He,Jianguo Zhao,Zhenxing Wang
In our previous work, we have developed tannic acid (TA)-3-aminopropyltriethoxysilane (APTES) coating (TA-APTES coating) for membrane surface modification, which has several distinct advantages: suitable for various membranes, hierarchical structures, mild conditions, etc. In this work, we developed (TA-APTES)Plus coating, which exhibits much better performance than our previous TA-APTES coating: (1) Much faster: The membrane modification process based on our (TA-APTES)plus coating only needs 40 min, while our previous TA-APTES coating needs 12 h; (2) Much greener: The (TA-APTES)Plus coating is prepared in pure water system, without Tris-HCl buffer solution , without oxidants such as H 2 O 2 or KIO 4 ; (3) More stable: The (TA-APTES)Plus coating can remain superhydrophilic even after 30 days, which cannot be achieved by our previous TA-APTES coating. Moreover, the (TA-APTES)Plus coating reserves the advantages of our previous TA-APTES coating, such as universality and distinct hierarchical structures. Take polypropylene (PP) microfiltration membrane as an example, the PP membrane modified by (TA-APTES)Plus not only possesses ultra-high pure water flux (11,990 L m −2 h −1 bar −1 ) and high separation efficiency (>99.8%) of oil-in-water emulsion, but also exhibits excellent stability. Considering its much better performance, the (TA-APTES)Plus coating may become a more powerful tool for membrane modification toward oil/water separation.
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高影响因子
LANGMUIR
·
2022
·
IF 4.331
Fiona Hammond Quarcoo,Lijian Shi,Yujia Tong,Yaping Zhang,Changqing Miao,Weixing Li
Plant polyphenol-inspired surface modification of membranes is helpful for oil–water separation. However, the preparation of this coating is time-consuming. Herein, we introduce a rapid synthesis of the TA-APTES coating by the addition of sodium periodate (SP). The surface chemical composition and morphology of the resultant TA-APTES hybrid coatings were characterized using SEM, ATR-FTIR, and XPS. The hydrophilicity and membrane performance were investigated by the water contact angle, pure water permeability, and oil rejection for an isooctane-in-water emulsion. The experimental findings revealed that the optimal microfiltration (MF) membrane (MF-TA-APTES-SP-0.05) displayed exceptional hydrophilicity and water permeability (9558 L m–2 h–1 bar–1). The membrane realized highly efficient separation with a permeability (4117 L m–2 h–1 bar–1) and rejection of oils (>99%). Furthermore, it possessed outstanding chemical stability and maintained underwater superoleophobicity even after exposure to harsh conditions. This simple and rapid strategy of developing hydrophilic coatings as a modifier for the poly(vinylidene fluoride) membranes has potential applications in oil–water separation and wastewater treatment.
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DOI
PubMed
高影响因子
PROPELLANTS EXPLOSIVES PYROTECHNICS
·
2020
·Vol. 45
·期 3
·368-373
·
IF 1.544
Naimeng Song,Li Yang,Pingan Liu
In this study, the ultrasonic spray drying technology was applied to prepare composite microspheres of catalyst (Ta−Fe, Ph−Fe) and AP. The surface morphology of the two composite microspheres was characterized by scanning electron microscopy (SEM). Their particle size distribution characteristics were tested by a nano laser particle size analyzer. The results showed that the spray drying technology can uniformly compound the AP and the catalyst into spherical particles. The thermal decomposition process of Ta(Ph)-Fe/AP composite microspheres were tested by differential scanning calorimetry (DSC). The DSC data demonstrated that Ta(Ph)-Fe/AP composite microsphere had a very good catalytic effect and significantly promoted the thermal decomposition process of AP. In addition, the catalytic mechanism was discussed by calculating the change in activation energy. Compared with the raw AP, the activation energies of the Ta−Fe/AP and Ph−Fe/AP composite microspheres were reduced by 18.5 kJ/mol and 28.1 kJ/mol, respectively.
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高影响因子
危险品化学品经营许可证（带存储）