CELLULOSE
·
2021
·Vol. 28
·期 6
·3887-3899
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IF 5.044
Ma Yanan,Luo Xiaolei,Liu Lin,Zhang Cong,Shang Xiaolei,Yao Juming
Eco-friendly, efficient fireproof cotton fabrics were prepared by a feasible chemical grafting of phytic acid (PA). The treated cotton fabrics (COTP) exhibited excellent thermal stability and flame resistance with limiting oxygen index (LOI) of 42.5%. Compared with other fireproof cotton fabrics, COTP displayed outstanding washing durability, the LOI maintained at 28.3% after 50 laundering cycles. Vertical burning test and cone calorimetry demonstrated self-extinguishing behavior and significantly improved flame retardancy of COTP. The peak heat release rate and the total heat release of COTP3-90 was notably declined by 65.5 and 71.4%, respectively. Moreover, lower smoke production and release were found with reduction in total smoke production of 12.5% and total smoke rate of 18.8% compared with untreated cotton fabric. The improved flame retardancy of COTP was speculated that PA catalyzed cellulose dehydration and carbonization to facilitate the formation of residual char, reduce the release of flammable gases and heat/mass transfer.
研究领域:
材料科学
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纺织工程
·
化学工程
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产品关联
DOI
高影响因子
ENZYME AND MICROBIAL TECHNOLOGY
·
2021
·
IF 3.493
Min Lu,Hao Zhang,Xu Wang,Hui Jiang,Guang Hu,Feng-Qing Yang
A simple, convenient and efficient enzyme immobilization method through phytic acid (PA) modified α-Glucosidase (α-Glu)/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower was developed. The structural properties of the materials were studied by several characterization techniques. Subsequently, the enzymatic reaction conditions such as the pH value and temperature were optimized, and the enzyme kinetics and inhibition parameters were determined. The PA modified α-Glu/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower had better enzymatic activity under a wide pH range and high temperature than the free one. After seven successive cycles, the PA modified α-Glu/Cu 3 (PO 4 ) 2 ·3H 2 O hybrid nanoflower could still maintain approximately 63.0 % of its initial immobilized enzyme activity. The Michaelis-Menten constant ( K m ) and the half-maximal inhibitory concentration (IC 50 ) of acarbose were determined as 0.77 mM and 15.01 μM, respectively. In addition, the material was applied to evaluate the inhibitory activity of ten phenolic compounds on α-Glu, and epicatechin gallate, gallocatechin gallate, epigallocatechin gallate and rosmarinic acid showed good inhibitory activity with % of inhibition of (53.42 ± 2.39)%, (37.28 ± 1.32)%, (37.08 ± 0.63)% and (35.53 ± 0.23)%, respectively. These results indicate that the PA modified hybrid nanoflower is an efficient method of α-Glu immobilization.
研究领域:
生物化学
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纳米技术
·
酶工程
·
药学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2014
·
IF 4.384
Wenbo Zhao,Kuai Wang,Yuan Wei,Yinghui Ma,Lingling Liu,Xiaohua Huang
In this work, three kinds of nanostructured silica–phytic acid (SiO2–PA) materials with diverse morphologies including spherical SiO2–PA (s-SiO2–PA), rod-like (r-SiO2–PA), and helical SiO2–PA (h-SiO2–PA) were prepared with the help of electrostatic interaction. The SiO2–PA nanomaterials with different morphologies were characterized by using transmission electron microscopy (TEM), Fourier transform infrared (FTIR), electrochemical impedance spectroscopy (EIS), and circular dichroism spectrum (CD). Diverse morphologies of SiO2–PA were used as electrode decorated materials to achieve a high efficiency for electrochemical dopamine (DA) detection. The laccase biosensors were fabricated by immobilizing different morphologies of SiO2–PA nanomaterials and laccase onto the glassy carbon electrode (GCE) surface, successively. Then the electrochemical responses of the different morphologies of nanostructured SiO2–PA nanomaterials to laccase were discussed. Results indicated that compared to laccase/s-SiO2–PA and laccase/r-SiO2–PA, the laccase/h-SiO2–PA-modified electrode showed the best electrochemical performances.
研究领域:
生物传感技术
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材料科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
POLYMER TESTING
·
2022
·
IF 4.931
Weihua Meng,Yuying Song,Ke Zhai,Hang Di,Haiyun Ma,Xue Bi,Jianzhong Xu,Lide Fang
Phytic acid (PA)-modified MXene (P-MXene) was prepared combination selective etching with assemble method, and was mixed with epoxy resin (EP) to investigated its flame retardancy, thermal conductivity, conductivity and mechanical properties. P-MXene exhibited two-dimensional single layer structure and had good char-forming property with 86.7% char residue at 800 °C. The cone calorimetry test results showed that P-MXene endowed EP with excellent flame retardancy. Compared with pure EP, the peak heat release rate, peak smoke release rate, peak CO generation rate, and peak CO 2 generation rate of EP composites with 2 phr P-MXene decreased by 38.6%, 31.6%, 38.7% and 40.6%, respectively. The flame retardant mechanism was attributed to physical barrier, catalyzing carbonization effect, oxidative thermal degradation and physical barrier effect. Additionally, the conductivity and mechanical properties of EP composites were slightly reduced. This work provides a promising method to design multifunctional polymers.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2021
·
IF 5.03
Wenxue Yang,Haijun Zhang,Xiaoping Hu,Yingru Liu,Suhua Zhang,Changqiong Xie
The design of flame retardants based on environment-friendly perspective is an increasingly promising strategy to meet the requirements of sustainable development. Herein, combining with the advantages of sustainability and high thermal stability of phytic acid and phosphazene, a novel mono-component intumescent flame retardant hexakis (4-aminophenoxy) cyclotriphosphazene-phytic acid with microporous nanosheet morphology (HACP-PA) is synthesized via template-free self-assembly, which assembles carbon source, acid source and gas source into one molecular structure. The fire retardancy of HACP-PA was evaluated by UL-94, limiting oxygen index (LOI), and cone calorimeter. With 5 wt% HACP-PA loading into PLA, the UL-94 V-0 rating was achieved, and the LOI value increased to 24.2%. Compared with PLA, the addition of 5 wt% HACP-PA resulted in 21.5% and 15.3% reductions in the total heat release (THR) and the peak heat release rate (pHRR) of PLA composites, respectively. Moreover, the total smoke production (TSP) also significantly decreased by 31.0%, and the combustible volatile products are remarkably reduced by the incorporation of HACP-PA. This work provides an effective approach to improve the fire-retarding performance and crystallization performance of PLA by introducing sustainable bio-based intumescent flame retardant with a unique nanosheet structure.
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
ACS ES&T Water
·
2023
·
IF 5.3
Lichao Xia,Fei Song,Fangang Meng,Liang Wang,Shanshan Zhao
Nanofiltration (NF) shows great potential for water treatment and recycling. Nevertheless, severe membrane fouling significantly decreased lifetime and performance of NF membranes, impeding NF applications for clean water production. Herein, novel antifouling NF membranes with a pseudo zwitterionic separation layer were designed using layer-by-layer (LBL) assembly of amino-quinone networks (AQNs) and hydrophilic phytic acid (PhA) (AQN-PhA). The AQNs were formed by 5-hydroxy-1,4-naphthoquinone (HNQ) and polyethylenimine (PEI) via Michael addition and Schiff base reaction. The modification conditions of the AQN-PhA system were systematically investigated for an optimum membrane performance. The optimized conditions were found to be a PEI molecular weight of 600 Da, HNQ/PEI ratio at 1:2, an AQN coating time of 10 min, and pH of PhA at 5. The optimized membrane (i.e., AQN-PhA-5-2L) showed improved hydrophilicity along with a pure water permeability of 9.0 L·m–2·h–1·bar–1 and a molecular weight cut-off of 766 Da. It exhibited excellent fouling resistance with approximately 94% flux recovery ratio against a synthetic wastewater during a long-term filtration, which was superior in comparison with a benchmark commercial polyamide NF membrane. This study provides an idea for simple, feasible, and scalable zwitterionic modification in the future design of antifouling NF membranes.
研究领域:
环境工程
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材料科学
·
水处理
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
·
IF 8.2
Qing Yin,Jiali Liu,Zicheng Zhong,Yueyuan Zhang,Feiran Zhang,Mingming Wang
In this study, chitosan (CS) and phytic acid (PA) were employed as raw materials to synthesize a range of chitosan–phytic acid complexes (CP) with different ratios (CS:PA = 12:1, 9:1, 6:1, 3:1, 1:1). The structures and elemental compositions of the compounds were characterized using Fourier-Transform Infrared Spectroscopy (FT-IR) and Scanning Electron Microscopy with Energy-Dispersive X-ray Spectroscopy (SEM-EDS). The thermal stability of the synthesized materials was analyzed using a Thermogravimetric Analyzer (TG). Electrochemical testing was conducted to explore the corrosion inhibition effect of the modified inhibitors with varying ratios on Q235 steel in 3.5 wt% NaCl solution. Additionally, Scanning Electron Microscopy (SEM) was utilized to investigate the surface morphology of the immersed samples. When the CS:PA ratio was 3:1, CP exhibited an impressive corrosion inhibition efficiency of 94.9 %. Furthermore, the antimicrobial properties of CP were evaluated using the colony plate counting method. At a CS:PA ratio of 1:1, CP demonstrated the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) at 0.1250 % and 0.5000 %, respectively. This research introduces a novel green corrosion inhibitor capable of simultaneously reducing the electrochemical corrosion of Q235 while inhibiting biocorrosion, avoiding the antagonistic effects arising from the simultaneous use of biocides and corrosion inhibitors in the system.
研究领域:
材料科学
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腐蚀工程
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生物技术
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化工工程
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yuqi Yang,Xin Sun,Zihuan Qiu,Linrui Wu,Peiling Yang,Yunfeng Zhang,Zhenquan Wang,Wu Zhong,Shuxing Mei,Jian Liu,Hang lv
To address the challenge of uranium-contaminated wastewater, flow-electrode capacitive deionization (FCDI) has emerged as a promising technology owing to its advantages of electric field enrichment and electrode recyclability. In this study, porous carbon spheres were synthesized from aniline via a hard-template carbonization method and subsequently functionalized with phytic acid to obtain phytic acid-doped porous carbon spheres (PAPCS) as a novel flow-electrode material. Under optimized conditions, PAPCS displayed a specific activity of 13.95 μL·cm −2 ·s −1 , which is much higher than reported in previous studies. Further, only 4 h was required to reduce uranium concentration in wastewater from 0.1 mg L −1 to 25.2 μg L −1 . Thus, the uranium concentration in the treated wastewater reached the national drinking water standard (<30 μg L −1 ). At higher initial concentrations (1.0, 5.0, and 30.0 mg L −1 ), the removal efficiencies reached 88.29 %, 92.7 %, and 95.57 %, respectively. After nine adsorption cycles, the material retained over 80 % of its initial capacity, showing that its stability and reusability remain reasonably high. Density functional theory (DFT) calculations further revealed that the adsorption energies of porous carbon spheres toward uranyl ions decreased significantly decreased from −2.9556 eV to −3.5095 eV after phytic acid functionalization, confirming that phytic acid substantially enhance the adsorption capacity. These results highlight that the integration of phytic acid-functionalized porous carbon with FCDI technology provides an efficient, stable, recyclable, and environmentally friendly approach for uranium wastewater treatment, offering enormous potential for practical applications.
研究领域:
环境科学技术
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材料科学
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核化学
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水处理工程
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产品关联
DOI
高影响因子
Fire-Switzerland
·
2025
·Vol. 8
·期 12
·461
·
IF 2.7
Lin Shi,Quanyi Liu,Pei Zhu
The aviation industry needs to develop sustainable, fire-safe cabin interior materials. Although wood is eco-friendly, its high flammability makes it challenging to meet flame retardant standards. Enhancing wood fire safety requires the creation of an environmentally friendly and flame retardant coating. In this study, a new type of intumescent flame retardant (IFR) coating was applied to the wood surface using the layer-by-layer (LBL) technique, with fully bio-based chitosan (CS), agar, and phytic acid (PA) as key components. The coated wood demonstrated improved durability, flame resistance, and thermal stability. Particularly, the Wood-2 sample achieved a vertical burning test (UL-94) V-0 rate and a limiting oxygen index (LOI) of 53.1%, which exceeded most previous reported flame retardant coatings. Cone calorimeter test and infrared thermography analysis confirmed that a thick layer of intumescent char formed when the coating was exposed to heat, effectively hindering heat transfer and oxygen supply. This flame retardant effect is attributed to a synergistic mechanism involving nitrogen/phosphorus (N/P) elements. This study offers an environmentally friendly solution for wood flame retardancy and lays an experimental and theoretical foundation for the development of green aviation interior materials.
研究领域:
材料科学
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消防安全工程
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可持续航空材料
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聚合物涂层
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绿色化学
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Minhang Han,Qianhe Zhai,Kun Wang,Bo Li,Ruixin Hao,Tielin He,Yinghui Tang,Weihua Ji,Chao Ma,Yang Miao
The demand for lightweight and fire-safe thermal insulation materials in civil and industrial applications has been continuously increasing. Silica aerogels are attractive candidates owing to their ultralow density and low thermal conductivity, but their high flammability and insufficient thermal stability limit broader engineering applications. Incorporating inorganic components such as alumina has been considered an effective strategy to enhance skeletal stability, giving rise to silica–alumina aerogels with improved high-temperature resistance. In this work, phytic acid (PA), a naturally occurring phosphorus-rich compound, was employed as both an acid catalyst and modifier to prepare phosphorus-containing silica–alumina aerogels (ASAs/PA) via supercritical drying. The optimized sample (ASAs/PA-2, TEOS/PA = 1:1.5 ×10⁻³) exhibited a low density of 0.0854 g/cm³ and a thermal conductivity of 24.9 mW/m/K. Compared with pure silica aerogels (SA), its peak heat release rate and total heat release were reduced by 82.0 % and 44.1 %, and by 44.4 % and 18.0 % compared with silica–alumina aerogels (ASAs), demonstrating enhanced flame retardancy arising from phosphorus–aluminum combined interactions. Additionally, the total smoke production (TSP) was significantly reduced, with a reduction of over 95 %, confirming the strong smoke-suppression effect of PA. ASAs/PA showed improved stability at 1000 °C, but reduced stability at 800 °C and 1200 °C compared with ASAs, indicating a trade-off between flame retardancy and high-temperature structural stability. These results highlight the potential of PA modified silica-alumina aerogels as lightweight, fire resistant, and sustainable thermal insulation composites for building and engineering applications, while also underscoring the importance of balancing flame retardancy with high temperature structural stability.
研究领域:
材料科学
·
高分子化学与物理
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纳米复合材料
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防火工程
·
可持续建筑材料
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Wei Li,Tianyu Ruan,Yingting Yin,Jinbo Yao,Xuemin Hu
With the increasing demand for safety and practical performance in textiles, the development of polyester fabrics combining flame retardancy and hydrophobic properties has become an inevitable requirement for industry advancement. This study employed an in-situ cross-linking composite process for dual-functional flame-retardant and hydrophobic coatings. A flame-retardant base coating was constructed on polyester surfaces via blending and crosslinking of phytate‑zinc and siloxane-modified waterborne polyurethane. Subsequently, the flame-retardant layer catalyzed the hydrolysis and condensation of hexadecyltrimethoxysilane on the fabric surface, thereby forming a hydrophobic coating and yielding a polyester material with both hydrophobic and flame-retardant properties. The limiting oxygen index of the modified polyester fabric increased from 19.5 % to 27.2 %. It couldn't be ignited in combustion tests and exhibited no melting droplets. In the cone calorimeter test, the peak heat release rate (PHRR), total heat release (THR), and total smoke release (TSP) decreased by 43 %, 37.8 %, and 35.3 %, respectively. Moreover, the modified polyester fabric exhibited a static water contact angle of up to 149.4°, demonstrating self-cleaning ability, abrasion resistance, and washing durability. This work provides a facile and accessible strategy for the preparation of multifunctional textiles.
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产品关联
DOI
高影响因子
Case Studies in Thermal Engineering
·
2026
·
IF 6.4
Lin Zhou,Zhe Wang,Qi Zhao,Wenwei Wang,Xianfeng Chen
Wheat dust poses a significant hazard to grain processing safety due to its high explosion sensitivity. To develop an inhibitor combining high-efficiency explosion suppression with environmentally friendly and edible properties, this study innovatively employed an aqueous phase condensation-freeze-drying method to successfully synthesize a phytic acid-adenine complex (PA-A) using naturally edible phytic acid (PA) and adenine as raw materials. Characterization analyses employing laser particle size analyzer, field-emission scanning electron microscopy with energy-dispersive X-ray spectroscopy (FE-SEM/EDS) confirmed the formation of a lamellar microstructure with highly dispersed phosphorus elements. The suppression effect of PA-A on a 300 g/m 3 wheat dust explosion was systematically investigated evaluated in a vertical tube combustion apparatus (1000 × 80 × 80 mm). Results demonstrated that increasing inhibitor concentration (0 vol%-12.5 vol%) progressively suppressed flame propagation, evidenced by color transition from bright yellow to dark red, morphological fragmentation, and discontinuity. Quantitative analysis revealed peak flame propagation velocity decreased from 27.6 m/s to 10.9 m/s (a reduction of 60.5 %), maximum temperature declined from 993 °C to 367 °C (a reduction of 63.1 %), and the maximum explosion pressure attenuated from 48.3 kPa to 20.1 kPa (a reduction of 59 %), with a significant delay (>80 %) in the time to reach these peak parameters. Comprehensive analysis based on Thermogravimetry-Differential Scanning Calorimetry (TG-DSC), X-ray Photoelectron Spectroscopy (XPS), and Fourier Transform Infrared Spectroscopy (FTIR) elucidated a multi-level synergistic suppression mechanism involving endothermic cooling, gas-phase dilution, surface isolation, and free radical quenching. This study provides a safe, environmentally friendly, and edible new strategy for controlling grain dust explosions.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）