Colloid and Interface Science Communications
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2021
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IF 4.914
Han Xu,Wei-pin Huang,Ke-feng Ren,Yi-min Tang
Tannic acid (TA), as a natural molecule, possesses many excellent properties. It has attracted wide interest in various fields of functional coatings, food, and medicine. A simple method to prepare thick and stable TA-contained coating is required, which may promote practical applications of TA. Here, we proposed a simple and effective method of generating a stable TA-rich coating by spraying layer-by-layer technology. The coating was stabilized basing on the complexation of TA and ferric (Fe 3+ ) ions and poly(ethyleneimine) (PEI). Because both TA and PEI have good antibacterial properties, the (TA-Fe 3+ /PEI) coating displayed the contact-killing against E. coli . Further, because of the reductive nature of the TA, the coating was able to incorporate nano‑silver particles by reducing silver ions . Consequently, the enhanced antibacterial property was achieved. The (TA-Fe 3+ /PEI) coating was then spraying coated on the nonwoven mask, showing the potential application in medical protection.
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Surfaces and Interfaces
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2021
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IF 4.837
You Wu,Ru Yan,Yangyang Duan,Juan Qiu,Ting Chen,Houyi Ma
Because traditional chromating and phosphating processes are harmful to the environment and human health, an eco-friendly tannic acid (TA)-based conversion film technology is established by adopting a new self-assembly strategy of TA/metal complexes on iron surfaces in aqueous solutions. In this study, TA and TA/Zn films were conveniently fabricated by anchoring a certain amount of TA molecules on the iron surface through the coordination interaction between phenolic hydroxyls and metal ions . In contrast, the introduction of Zn ions in the film-forming process cannot only complex with more TA molecules to form a thicker conversion film but also accelerate the film-forming process and transform into ZnO, which can further inhibit iron corrosion. This combination leads to the excellent corrosion protection of TA/Zn film-modified iron (the corrosion protection efficiency is up to 92.39%). Moreover, impact tests show that the TA/Zn film can enhance the adhesion between the iron substrate and outer coating.
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Nanoscale Research Letters
·
2021
·Vol. 16
·期 1
·1-11
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IF 4.703
Li Zihaoran,Wu Xinghan,Wang Wenyu,Gai Chengcheng,Zhang Weifen,Li Wentong,Ding Dejun
Suppression of tumor development by inducing ferroptosis may provide a potential remedy for triple-negative breast cancer, which is sensitive to intracellular oxidative imbalance. Recently, artemisinin (ART) and its derivatives have been investigated as potential anticancer agents for the treatment of highly aggressive cancers via the induction of ferroptosis by iron-mediated cleavage of the endoperoxide bridge. Owing to its poor water solubility and limited intracellular iron content, it is challenging for further application in antitumor therapy. Herein, we developed ferrous-supply nano-carrier for ART based on tannic acid (TA) and ferrous ion (Fe(II)) coated on the zeolitic imidazolate framework-8 (ZIF) with ART encapsulated (TA-Fe/ART@ZIF) via coordination-driven self-assembly. Drug release experiments showed that ART was not nearly released in pH 7.4, while 59% ART was released in pH 5.0 after 10 h, demonstrating the excellent pH-triggered release. Meanwhile, a high level of intracellular ROS and MDA, accompanied with decreasing GSH and GPX4, displayed a newly developed nano-drug system displayed markedly enhanced ferroptosis. Compared with monotherapy, in vitro and vivo tumor inhibition experiments demonstrated higher efficiency of tumor suppression of TA-Fe/ART@ZIF. This work provides a novel approach to enhance the potency of ferroptotic nano-medicine and new directions for TBNC therapy.
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高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 28
·15678-15683
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IF 12.732
Shuli Yin,Songliang Liu,Shiqian Jiao,Hugang Zhang,You Xu,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
Benefiting from the interaction of inorganic and organic building blocks, the design of metal–organic nanohybrids is of great significance for the oxygen reduction reaction (ORR). Herein, a universal strategy is presented to controllably synthesize tannic acid (TA) functionalized AuPd lavender-like nanochains (AuPd@TA LCs) by a chemical reduction method at low temperature. Due to the unique structural characteristics and polyphenolic modification, the AuPd@TA LCs show superior ORR performance in an alkaline electrolyte. Moreover, the surface decorated TA polymers can act as a molecular screen window to prevent methanol molecules from accessing the active site of the catalyst, thus resulting in high methanol tolerance and catalytic stability. The presented molecular screen window strategy is highly valuable for designing ORR electrocatalysts with high methanol tolerance.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
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IF 3.764
Jing-Qi Wang,Tian-Jiao Lou,Tao Wang,Weiwei Cao,Hui Zhao,Peng-Fei Qian,Ze-Long Bao,Xiao-Tong Yuan,Hong-Zhang Geng
Carbon nanomaterials are ideal fillers in composites for electrothermal applications due to their ultrahigh electrical conductivity, thermal conductivity, and excellent mechanical property. In this study, high-performance electrothermal laminate films were prepared by a layer-by-layer process, which used tannic acid-functionalized multiwalled carbon nanotubes as filler and thermoplastic polyurethane as substrate. The prepared electrothermal laminate films exhibit excellent mechanical property, electrical heating property, and high electrothermal performance, which can reach steady-state temperature in about 120 s. Additionally, the maximum steady-state temperature can reach ∼150 °C at 20 V. During 10 different cycles of experiments and 5 h aging time, no significant change in temperature was observed. Moreover, from the results, it is clear that the performance of the samples is related to the amount of filler added and the applied voltage, and we can precisely control the sample performance by regulating the amount of filler addition and applied voltage. We believe that these electrothermal laminate films could be widely used in wearable heating cotton fabric, controllable electric heating module, floor heating, and deicing devices.
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Colloid and Interface Science Communications
·
2021
·
IF 4.914
Menghui Wan,Haodong Zhao,Zhihua Wang,Xueyan Zou,Yanbao Zhao,Lei Sun
Surface-enhanced Raman spectroscopy (SERS) is a powerful analytical tool, but how to obtain effective and versatile SERS substrates is still a challenge. Herein, a simple and efficient strategy to prepare SERS substrates with ultra-sensitivity, high stability and wide applicability is presented. SiO 2 nanofibrous membranes were prepared by electrospinning and calcination , and modified with Ag nanoparticles . The results show that Ag nanoparticles decorated on SiO 2 nanofibers evenly and tightly through chemical bonding. The as-prepared membranes exhibit high flexibility and thermostability. The electrospun nanofibrous membranes show an ultra-high sensitivity of 10 −11 mol/L (an enhancement factor of 10 7 ) for small molecules, and the lowest detection limit near to 10 −8 mol/L for pesticides thiram . It is also demonstrated that the substrates remain excellent SERS signal stability even after standing for 60 days (intensity decrease only for 21.7%). More importantly, the as-prepared substrates can be performed for quantitative detection of bacteria.
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COMPOSITES PART B-ENGINEERING
·
2021
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IF 9.078
Jiongjiong Li,Shuaicheng Jiang,Yanqiang Wei,Xiaona Li,Sheldon Q. Shi,Wei Zhang,Jianzhang Li
The fabrication of advanced polymeric films with integrated biodegradability, great toughness, large stretchability, and high strength remains a long-term challenge. In this work, a facile design strategy is proposed for preparing tough, strong, and biodegradable soy protein (SP)-based composite films with excellent UV barrier performance and high thermal stability by integrating amino-containing hyperbranched polysiloxanes (HPS) and dendritic tannin acid (TA). The toughness and tensile strength of the SP/HPS/TA5 film reached up to 17.53 MJ m −3 and 12.87 MPa, which was 564% and 563% increase compared with that of the neat SP-based film, respectively. In addition, such developed film still exhibited a high strain at failure of 169.25%. These remarkable properties were caused by the dynamically fracture and reform of the intermolecular sacrificial hydrogen bonds and the deformation of HPS and TA, as well as the strain-induced extension and alignment of SP chains via interfacial covalent/non-covalent bonds as the anchor points . Moreover, owing to the incorporation of the heat-resistant HPS and the aromatic units-containing TA, the as-fabricated film can block 98.6–100% of the UV-A spectrum and also possessed high thermal stability. This work presents a simple approach for constructing tough, ductility, strong, and biodegradable SP-based composite films for many prospective applications like packaging engineering and UV-blocking biomaterial areas.
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SCIENCE OF THE TOTAL ENVIRONMENT
·
2021
·
IF 7.963
Lin Shi,Di Zhang,Jinfeng Zhao,Jianliang Xue,Mengnan Yin,Aiping Liang,Bo Pan
The slower adsorption of lower molecular weight organic molecules remains poorly understood. This study investigated the adsorption kinetics of gallic acid (GA) and tannic acid (TA) on kaolinite (Kao), montmorillonite (Mon) and hematite (Hem), with an emphasis on the role of the bound water on the minerals. The lower adsorption of TA and GA on Kao than on Mon attributed to the lower specific surface area of Kao. Because of the electrostatic attraction, the adsorption of TA and GA on Hem was higher than that on Mon, even the specific surface area of the former was much lower than that of the later. The adsorption rates of TA on the three minerals were generally two orders of magnitude higher than those of GA. The adsorption kinetics of GA was strongly diffusion dependent; however, the diffusion process had limited influence on TA adsorption kinetics. The decreased c values of the intraparticle diffusion model of GA with increasing ionic strength provided additional direct evidence for the diffusion-dependent adsorption and the reduced hindrance by bound water via hydration layer compression. However, hydration layer compression had no effect on TA adsorption kinetics. The reduced 1 H NMR relaxation rate of bound water indicated that the bound water quantity on minerals decreased with increasing ionic strength, which proved the occurrence of hydration layer compression. This study highlighted the importance of bound water and the relative sizes of organic molecules in the adsorption kinetics of organic compounds on minerals, which should be carefully considered for their environmental fate studies.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
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IF 5.774
Yuqi Wang,Yi He,Yi Fan,Hongjie Li,Hao Yu,Jing Yu,Yiling Nie,Shunhui Wang
Developing effective and green methods to treat large volumes of oily sewage is a significant challenge for aquatic pollution. In this study, an environmentally friendly, economical, self-cleaning, and multifunctional sodium alginate (SA)-tannic acid (TA) aerogel for emulsion separation was prepared via simple freeze-drying and in-situ gelation methods. The microstructure and chemical composition of the SA-TA aerogel are characterized by SEM, EDS, FT-IR, and XPS. As a result, the SA-TA aerogel has an interconnected 3D network structure, high porosity and rough microstructure. Furthermore, the SA-TA aerogel behaves a robust super hydrophilicity, underwater superoleophobicity, anti-crude oil-fouling performance and self-cleaning effect. Thus, it has excellent performance to separate oil-in-water emulsion with high water flux only under gravity and shows terrific cyclic stability. It is worth to note that SA-TA aerogels show improved mechanical properties, stable wettability in various chemical environments, and excellent adsorption properties for soluble dyes, which enable them to be used in complex actual water treatment.
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JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 56
·期 2
·1347-1358
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IF 3.553
Shao Huiju,Cheng Jifeng,Kang Dongdong,Qin Shuhao
Abstract Poly(vinylidene fluoride) (PVDF) membrane has been applied in the diverse water treatments, but its inherent hydrophobicity must be adjusted to reduce energy consumption. Herein, high hydrophobicity of PVDF membrane surface was transformed to superhydrophilicity by the combination of mussel-inspired chemistry and biomimetic mineralization. The deposited tannic acid (TA) and polyethylenimine (PEI) induced in situ biomimetic mineralization to form nanosphere and nanowire microstructures on the membrane surface. The highly efficient separation and outstanding antifouling properties were achieved for oil-in-water emulsion and dyeing wastewater treatment. The rejections of nano-ZrO 2 /PEI-TA/PVDF membranes to BSA, oil, Congo red and methyl blue reached as high as 99.3%, 98.8%, 96.8% and 93.5% (15-fold increment compared to that of pristine membrane), respectively. With rejections to BSA (95.0%), oil (93.9%), Congo red (86.6%) and methyl blue (83.2%), the permeate flux of nano-TiO 2 /PEI-TA/PVDF membranes reached as high as 1312.6 L/m 2 h, showing nearly 7.6-fold increment compared with other reported values. This work developed a novel strategy to fabricate multifunctional separation membranes for environmental remediation. Graphic abstract A superhydrophilic membrane with multiple hierarchical structures was fabricated through the combination of mussel-inspired chemistry and biomimetic mineralization to treat dyeing wastewater and oil emulsions highly efficiently.
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ELECTROCHIMICA ACTA
·
2020
·
IF 6.215
Qingyuan Zhang,Dawei Gu,Hui Li,Ze Xu,Hongshun Sun,Jishu Li,Lei Wang,Linjiang Shen
In this study, RuO 2 was deposited on tantalum (Ta) substrates by electrochemical plating and then assembled into supercapacitors RuO 2 //RuO 2 . The output energies of the as-obtained RuO 2 //RuO 2 under dynamic conditions were evaluated through a designed measuring circuit. The specific capacitance of electrodes in RuO 2 //RuO 2 was calculated from the experimental results of the discharge current and the potential of positive/negative electrodes during discharge. Also, the energy of the positive/negative electrodes and RuO 2 //RuO 2 with respect to time were derived. The results showed the positive electrode energy was partly transferred into the load R to generate joule heat and the other was used to elevate the potential of the negative electrode during discharge. The decrease in mass of negative electrode ( m − ) could extend the potential window, resulting in an enhancement of the energy of RuO 2 //RuO 2 . The energy of RuO 2 //RuO 2 with m − = 103 μ g was elevated by 138.7% compared to that with m − = 200 μ g . Further decrease in mass of the negative electrode would deteriorate the energy of RuO 2 //RuO 2 .
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Lihua Zhao,Lei Yan,Chengmei Wei,Zhong Wang,Lichuan Jia,Qichao Ran,Xiaolong Huang,Junwen Ren
Two-dimensional boron nitride nanosheets (BNNSs) hold great promise as thermal management materials because of their ultrahigh thermal conductivity and wide band gap. However, the scalable exfoliation of hexagonal boron nitride (h-BN) into few-layered BNNSs remains a challenge. Herein, we proposed a novel tannic acid (TA)-assisted liquid-phase exfoliation approach to realize efficient exfoliation and functionalization of h-BN in an aqueous medium. This method gave rise to a high exfoliation yield of 42.2% and the resultant TA-functionalized BNNSs (BNNSs@TA) showed good dispersion in both water and organic liquids. Additionally, the BNNSs@TA can easily combine with poly(vinyl alcohol) (PVA) to give flexible free-standing composite films with an ultrahigh in-plane thermal conductivity of 70.3 W m–1 K–1 because of the enhanced intermolecular hydrogen bonds between the attached TA and PVA chains. This study provides a simple, environmentally friendly, and highly efficient approach to achieving the exfoliation of BNNSs and highlights the critical role of BNNS surface functionalization in determining the thermal conductivity of composite films.
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