INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
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IF 8.025
Ruitong Hong,Zile Zhang,Shenrui Pan,Yu Chen,Huan Wang,Wenli Zhang,Xuliang Lin
All-in-one supercapacitors are one of the best candidates for realizing flexible supercapacitors because of their outstanding flexibility and stability. The pursuit of improved electrochemical performance while meeting the requirements of flexible functionalization has always been a long-term goal. To this aim, lignosulfonate (LS) can be used in the field of all-in-one supercapacitors and contribute to its unique three-dimensional structure and abundant functional groups. By doping a small amount of LS, a simple approach is developed to achieve a one-step improvement in electrochemical performance and flexible functional design in this study. PVA-lignosulfonate hydrogel (PLH) obtains a compact and regular three-dimensional porous structure, higher ionic conductivity (0.17 S/cm), bending flexibility, and compression resistance. Polyaniline (PANI) based solid-state supercapacitors PANI-PVA and PANI-PLH show specific capacitance values of 505 and 558 mF/cm 2 , respectively, at a current density of 0.5 mA/cm 2 . After 5000 charge–discharge cycles, the capacitance retention rate increases from 53 % to 73 %, and the PANI-PLH can maintain the stability of electrochemical performance under bending, folding, puncturing, and squeezing. After 1600 times folding, the capacity remains almost 100 %. This study presents a one-step optimization for the construction of functional and high-performance all-in-one supercapacitors in a simple way and a novel idea for the potential application of the high-value lignin.
研究领域:
材料科学
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能源存储与转换
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产品关联
DOI
PubMed
高影响因子
Materials Today Communications
·
2023
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IF 3.8
Pan Zhang,Aizhao Pan,Ke Yan,Jiannan Sun
CdTe quantum dots (QDs) reveal the prospect as temperature sensors for high-speed bearing rotating elements owing to their excellent temperature dependence of photoluminescence (PL) spectra. However, the poor PL peak wavelength stability of CdTe QDs limits its practical application. Herein, we fabricated a CdTe@SiO 2 /PVA hybrid film via a sol–gel process based on CdTe QDs. The peak wavelength of PL spectra of the CdTe@SiO 2 /PVA hybrid film increases linearly with the rising temperatures, which is similar to CdTe QDs. Significantly, the linear relationship between the peak wavelength of PL spectra of the CdTe@SiO 2 /PVA hybrid film and temperature in the heating process from room temperature to 85 °C is consistent with that in the colling process from 85 °C to room temperature. In contrast to CdTe QDs, the CdTe@SiO 2 /PVA hybrid film presents superior PL peak wavelength stability. Furthermore, the uniformity of the hybrid film is significantly improved than our previous preparation method of thin films . The excellent film-forming property of the CdTe@SiO 2 /PVA hybrids is effective to engineering application. The feasibility and accuracy of the CdTe@SiO 2 /PVA sensor are verified through the temperature monitoring test of bearing rotating elements.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2023
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IF 6
Rongxing Tang,Shuang Gao,Jiazi Hou
After suffering the COVID-19 viruliferous epidemic outbreak, wearing disposable protective masks has become an effective protective measure in our daily life. However, protection effectiveness of disposable protective masks will be greatly reduced or even lost once overstep their service life span. Thus, developing a strategy that can identify the remaining service life of masks by naked eyes becomes desirable. Here, we prepared a gradient transparent membrane as a view layer of masks by electrospinning the semi-interpenetration PVA/PVME membrane (semi-IPNM) which rapid responded to the respiration moisture. Based on the Darcy law by COMSOL software, with the increasing time of respiration simulation, the transparent area diffused from center to the edge of the membrane, like a progress bar revealing the remaining life of face mask. The resultant semi-IPNM exhibited excellent flexibility, nontoxicity, high tensile strength (34.5 MPa) and reliable filtration efficiency (greater than92%) even through 6 h using. Meanwhile, the pressure drop of semi-IPNM became higher after 6 h using, which was not meet up with human needs that indicated the disposable face mask should be discarded according to WS/T 311–2009 technical specification. Therefore, a view layer of face masks built by this strategy possesses a real-time service life management and an effective respiratory protection.
研究领域:
材料科学
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医学工程
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产品关联
DOI
高影响因子
Biomaterials Advances
·
2022
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IF 0
Xueqing Yang,Shizhen Wang,Xiang Zhang,Changqing Ye,Shige Wang,Xiao An
The development of tissue adhesive embolization microspheres with imaging ability is one of the important methods to improve the efficacy of interventional embolization. This study reported the synthesis of iodine (I)-polyvinyl alcohol (PVA)@polydopamine (PDA) microspheres to achieve the computed tomography image, drug loading and controlled release, and the enhanced embolization of liver portal vein. The [email protected] microspheres with a diameter of 147.9 μm showed an excellent computed tomography imaging ability. Moreover, the introduction of PDA endowed the [email protected] microspheres with tissue adhesive ability and therefore the in vivo embolization effect was improved. The in vivo embolization results showed that focal necrosis of hepatocytes with necrotic cell fragments and inflammatory cell infiltration was observed in the liver tissue, proving that the [email protected] microspheres have an enhanced embolization effect than PVA particles. The [email protected] microspheres were further used to deliver and release of chemotherapeutic drugs (5-fluorouracil), which displayed an initial fast release (release amount: 29.74%) in the first 24 h and then a sustained release of 34.48% within 72 h. Moreover, as a universal platform, the [email protected] microspheres could combine with other imaging agents like Bi 2 S 3 , thus holding a great potential in the interventional treatment of different diseases.
研究领域:
医学影像
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药学
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介入放射学
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生物材料
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产品关联
DOI
PubMed
ACS Applied Polymer Materials
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2024
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IF 4.4
Yadi Zhang,Haikuan Yuan,Xinyi Chen,Zhenlin Jiang,Jie Lu,Fan Xin
MXene has a multilayer structure, which can be peeled and layered into single or multilayer nanosheets, and it possesses multiple functional groups that can be easily modified. MOF-303, a kind of metal–organic framework material, was synthesized by the solvent hydrothermal method using aluminum ion as the center metal and 3,5-pyrazole dicarboxylic acid as the organic ligand. In this paper, MOF-303 was grown in situ on Ti3C2Tx MXene to synthesize the MXene@MOF-303 composite, which combined the advantages of both MXene and MOF-303. Using the MXene@MOF-303 composite as blending fillers and a polyacrylonitrile (PAN) ultrafiltration (UF) membrane as the substrate, an MXene@MOF-303/poly(vinyl alcohol) (PVA)/PAN composite membrane was fabricated. The composites and membranes were characterized by FTIR, XRD, SEM, and the pervaporation desalination of the composite membrane was also tested. The experimental results showed that the incorporation of MXene@MOF-303 composites improved the separation performance of the PVA membrane. The MXene@MOF-303/PVA/PAN composite membrane, loaded with 0.5 wt % of MXene@MOF-303, achieved a high flux of 15.87 kg·m–2·h–1 and a rejection of 99.84% when desalinating 3.5 wt % NaCl solution at 35 °C by pervaporation.
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 40
·12518-12522
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IF 6.641
Yongqi Yang,Jianyu Xu,Yi Li,Guanghui Gao
Rewritable paper exhibits the potential to replace conventional paper due to its reusable properties. However, compared to conventional paper, rewritable paper can fade, making it impossible to store information stably for a long time in a daily environment, which limits its application. Here, a series of photochromic gelatin/polyvinyl alcohol (PVA) composited films containing polyoxometalate were prepared. The addition of PVA had a significant effect on the mechanical, transparent, photochromic and fading properties of the film. The addition of PVA significantly inhibited the fading process of the film after photochromism. This was due to the increase of crosslink density in the film and the existence of hydrogen bonding between PVA and inorganic photochromic ammonium molybdate. Despite this, the film was able to achieve complete fading in 1.5 days in a humid environment and the fading time could be further accelerated to 2 h by heating. This film could display information stably over a long time while being rewritable. It was expected that this simple and effective design strategy is conducive to the development of a new generation of rewritable paper.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Nanophotonics
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2019
·Vol. 8
·期 10
·1719-1729
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IF 6.908
Xiaofei Zhao,Chonghui Li,Zhen Li,Jing Yu,Jie Pan,Haipeng Si,Cheng Yang,Shouzhen Jiang,Chao Zhang,Baoyuan Man
An efficient electrospun aligned surface enhanced Raman scattering (SERS) and maize-like substrate of polyvinyl alcohol (PVA) composite and Ag colloid nanofibers decorated with thermal evaporated Ag nanoparticles (AgNPs) has been developed by taking advantage of electrostatic interactions. The synergistic effects of the evaporated AgNPs (niblets) and the Ag colloid in PVA (corncob) could arouse strong electromagnetic field between the lateral and vertical nanogaps which has been demonstrated by experiment and finite-different time-domain (FDTD) simulation. In this experiment, the aligned nanofibers possesses an excellent sensitivity by detection of crystal violet (CV) and malachite green (MG) molecule at low concentration. Moreover, the proposed flexible SERS sensor was measured with outstanding uniformity and reproducibility. We also carried out in-situ electrospinning on a curved surface to detect the mixture of Sudan I, CV and MG molecule, which demonstrates that flexible SERS sensor, has enormous potential in accurate and in-situ detection on the complex geometric structure.
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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表面科学
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Advances
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2024
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IF 5.5
Hu Hui,Yuheng Song,Hongmei Liu,Jiahui Fan,Zhou Sha,Hongchuang Li,Jian Lu,Qian Zhang,Xiang Fei,Meifang Zhu
Artificial periosteum is deemed a novel strategy for inducing endogenous bone regeneration, but ideal periosteum substitutes achieved by orchestrating a biomimetic microenvironment for bone regeneration remain a significant challenge. Here, we design and fabricate a hybridized nanofiber-based artificial periosteum with boosted osteoinduction properties. Via a “molecular cage” biomineralization strategy, nano-hydroxyapatite (nano-HAp) with a controllable size (∼22 nm) and excellent dispersion serves as unique nano-additives for water-soluble polyvinyl-alcohol (PVA)-based artificial periosteum. The PVA/HAp composite is electrospun into nanofibers to replicate the extracellular-matrix-inspired nanostructure for inducing cell adhesion, proliferation, and fate manipulation. A simple post-crosslinking treatment is subsequently applied to further booster its mechanical strength (6.6 MPa) and swelling stability. The optimized sample of C-PVA/HAp (10 wt% nano-HAp) artificial periosteum features excellent biocompatibility and remarkable in vitro mineralization. Cell experiments demonstrate that its effectively boasted cell modulation for enhanced osteogenesis without the aid of growth factors, showing a possible activation of the ERK/MAPK signaling pathway. This work provides an effective strategy for designing novel HAp nano-additives and expands the possibility of biomimetic fabrication for more advanced nanofiber-based artificial periosteum.
研究领域:
生物材料
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组织工程
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骨再生
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Journal of Food Measurement and Characterization
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2022
·Vol. 16
·期 3
·2314-2322
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IF 3.006
Chen Ying,Cao Jilin,Wei Hengyong,Wu Zhengang,Wei Yingna,Wang Xuepei,Pei Yuan
Silver nanoparticles (Ag NPs) were decorated on the electrospun polyvinyl alcohol (PVA)/polyethyleneimine (PEI) nanofibers by electrostatic adsorption in order to prepare Ag@PVA/PEI SERS substrate. The morphology and chemical structure analysis show that the metal Ag NPs are decorated on the PVA/PEI nanofibers surface uniformly. The lowest distinguishable level of Rhodamine 6G (R6G) is 10 −6 M of Ag@PVA/PEI nanofibers SERS substrate. It exhibits remarkable enhancement effect (EF = 1.4 × 10 5 ), good reproducibility (RSD = 9.5%). By the investigations of Raman spectra analysis, the Ag@PVA/PEI nanofibers substrate presented high sensitivity in the detection of enrofloxacin. Therefore, it facilitates a simple, direct, in-situ method for enrofloxacin residue detection on an irregular prawn surface. Graphical abstract
研究领域:
材料科学
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分析化学
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环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Ying Cheng,Bing-Yue Fan,Yu-Ling Qi,Guo-Zhi Han
Among the nuclides in radioactive wastewater, strontium (90Sr) is a highly toxic water-soluble fission product, which will be extremely harmful to the ecological environment and consequently bring great risk to human health. Therefore, the removal of the strontium element from the aquatic environment is increasingly attracting the attention of the scientific community. In this paper, using poly(vinyl alcohol) (PVA) and chitosan (CS) as raw materials and glutaraldehyde as a cross-linking agent, a kind of interpenetrating PVA/CS hydrogel microsphere was prepared by a facile reversed-phase emulsion method. On this basis, the mechanical strength and stability of the hydrogel microspheres were further enhanced by a freezing–thawing technique. It was discovered that synthetic hydrogel microspheres can effectively remove Sr2+ ions from radioactive wastewater. The influences of the mass ratio of PVA to CS, initial concentrations of Sr2+, pH value, and adsorption times, along with competitive metal ions and nuclides, on the adsorption performance of the hydrogel microspheres were further systematically investigated. Especially, it was found that the freezing–thawing process significantly improved the adsorption capacity of the hydrogel microspheres for strontium ions, and the maximum adsorption capacity of the PVA/CS hydrogel microspheres for Sr2+ was as high as 205.45 mg/g, which was superior to the results of most similar adsorbents at present. Especially, the PVA/CS hydrogel microspheres still maintained satisfactory adsorption capacity and a high degree of sphericity after seven cycles. Furthermore, through the analysis of kinetics and thermodynamics of the adsorption process, a plausible adsorption mechanism was proposed, which will be helpful for designing and constructing adsorbents to remove radioactive ions from aquatic environments.
研究领域:
环境科学
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材料科学
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核废物处理
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水污染控制
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吸附技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Chunhui Wu,Qingwei Ping,Xueru Sheng,Na Li,Bing Wang,Jian Zhang
During the reprocessing of irradiated nuclear fuel, radioactive iodine vapor—a hazardous substance threatening environmental safety and human health—is released in substantial quantities, creating an urgent need for adsorbents with high-efficiency iodine trapping capabilities. This study synthesizes BiOBr aggregates via hydrothermal method and loads them onto a three-dimensional (3D) porous aerogel, which is composed of crosslinked polyvinylpyrrolidone (PVP) and polyvinyl alcohol (PVA) (denoted as Bi@PVP/PVA). Compared with Bi@PVP and Bi@PVA, Bi@PVP/PVA shows significantly enhanced iodine adsorption performance: Bi@PVP/PVA-3, featuring a well-developed 3D porous network with optimized pore structure, achieves an exceptional iodine trapping capacity of 2482.2 mg/g at 85 °C, outperforming the single-polymer-supported counterparts. Characterizations confirm that crosslinking between PVP and PVA constructs a macroporous framework, which not only provides abundant sites for uniform loading of BiOBr aggregates but also facilitates iodine diffusion. Kinetic model analysis reveals the dual adsorption mechanism: the PVP/PVA porous network enables rapid trapping of iodine vapor, while chemical reactions between BiOBr and iodine ensure its firm immobilization. This synergistic effect of the carrier’s porous structure and the loaded BiOBr endows Bi@PVP/PVA aerogels with superior iodine treatment efficiency, highlighting their practical value in iodine capture during nuclear fuel reprocessing.
研究领域:
材料科学
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核工程
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Environmental Research
·
2024
·Vol. 19
·期 1
·1-13
·
IF 2.6
Liu Liao,Ren Chunji,Zhang Wuhuan,Fan Meikun,Zhang Jianqiang
The printing and dyeing wastewater has high chromaticity, biorefractory properties, and significant toxicity. In this study, PVDF-PVA/GO was synthesized for dyes’ adsorption with various chemical properties. Incorporating graphene oxide (GO) into the composite substantially enhanced the hydrophilicity and electronegativity of the PVDF membrane. Results indicated that the adsorption efficiencies for rhodamine B (RhB) and methylene blue (MB) are higher than those of methyl orange (MO) and bromocresol green (BCG). At an initial pH of 8, the maximum adsorption capacities for RhB and MB were 11.81 and 9.25 mg/g, respectively, while MO and BCG indicated considerably lower capacities of 0.59 and 0.63 mg/g, respectively. The cyclic utilization of the PVDF-PVA/GO revealed minimal degradation in adsorption efficiency. The adsorption kinetics of the four dyes primarily follow intra-particle diffusion mechanisms, resulting in the binding of dye molecules to the PVDF-PVA/GO membrane through electrostatic interactions. Notably, competitive adsorption phenomena were observed in mixed dye systems, especially between RhB and MB. Comparative analyses indicated an increased adsorption capacity for MB in the mixed dye system, accompanied by a notable reduction in the adsorption capacity of RhB. This study provides a theoretical foundation for the remediation of printing and dyeing wastewater. Graphical abstract
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）