POLYMER
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2026
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IF 5.1
Menghan Guo,Wenqing Wang,Zhiguo Zhu,Pengfei Qi,Jing Zhang,Yifan Yan,Rui Wang
Poly(lactic acid), a biodegradable polymer, suffers from flammability and low strength. A hierarchical layered flame retardant (MXene@P–Fe) was constructed via a pH-regulated self-assembly strategy, in which phytic acid (PA) served as a bridging ligand to intercalate Fe-based MOFs into MXene nanosheets. When incorporated into PLA at a loading of 12 wt %, the composite exhibited significantly enhanced flame retardancy, as evidenced by an increased LOI of 30%. In addition, the peak heat release rate and total heat release were reduced by 40.3% and 43.1%, respectively, evidencing effective suppression of heat and toxicity. Mechanistic investigations revealed that synergistic interactions among MXene, PA, and Fe-MOFs promoted cyclic compound formation, yielding a graphitized Ti/C-based barrier that inhibited heat and mass transfer. Furthermore, the tensile strength of PLA/4MXene@P–Fe reached 79.3 MPa, representing a 32.6% improvement over pristine PLA. This work provides a novel and practical pathway for constructing high-performance, fire-safe polymeric materials based on sustainable PLA.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Rutong Song,Yurong Wu,Fei Zhong,Chunlin Chen,Zhikui Huang,Yaqi Ren,Wei Li,Jie Cao,Yichao Ding
Cu-doped PDA and PA were grafted onto GO to form a P-N-rich barrier (GPCu/PA). • Co-Fe/B nanosheets were grown on GPCu/PA to construct a hierarchical structure. • Multi-metal (Cu, Co, Fe) and boron synergistically enhance char formation and stability. • The hierarchical filler provides physical barrier, radical quenching, and catalytic charring. Water-based intumescent epoxy coatings for steel structures face challenges in simultaneously achieving high-efficiency flame retardancy, smoke suppression, thermal insulation, and long-term environmental durability. In this study, a hierarchical GPCu/PA/Co-Fe/B hybrid flame retardant was developed by sequentially grafting Cu 2+ -chelated polydopamine (PDA) and phytic acid (PA) onto graphene oxide (GO), followed by the in situ growth of Co-Fe/B nanosheets. This ingeniously designed structure integrates the layered barrier effect of GO, the catalytic charring capability of PDA and transition metal species, the phosphorus-promoted expansion effect of PA, and the protective effect of boron-containing compounds. Through these synergistic effects, the hybrid system facilitates the formation of a dense and stable char layer, thereby effectively suppressing heat conduction, oxygen diffusion, and the release of flammable volatiles during combustion. When incorporated into water-based epoxy coatings, just 2 wt% of GPCu/PA/Co-Fe/B significantly improves flame-retardant performance by reducing the back-surface temperature by 36.3%, increasing the char layer expansion height by 244.9%, and enhancing smoke suppression capabilities. The cone calorimeter test further confirmed the reduced heat release, smoke generation, and toxic gas emissions achieved by this coating, demonstrating its outstanding fire safety performance. Additionally, water immersion and UV-accelerated aging tests showed that even after environmental exposure, the coating maintained low water absorption, structural integrity, and flame-retardant properties, indicating excellent durability and weather resistance. This study provides a highly promising strategy for developing multifunctional, tiered flame-retardant systems for durable water-based intumescent coatings designed for fire protection of steel structures. Download: Download high-res image (370KB) Download: Download full-size image
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Nano-Micro Letters
·
2026
·
IF 38.5
Yuxuan Jiang,Bingxin Sun,Mohsen Shakouri,Bin He,Wang Zhang,Ran Wang,Tianxiao Sun,Huan Pang
Aqueous zinc-iodine batteries (AZIBs) show promise for grid-scale energy storage, but they are hampered by polyiodide shuttling, sluggish iodine redox kinetics, and irreversible active-site poisoning caused by uncontrolled adsorption. We provide a comprehensive screening of M 1 (M 1 = P, S, B) heteroatom dopants, and P is identified as the best candidate for achieving coordination-tuned, moderate adsorption that balances adsorption and catalytic activity while mitigating site poisoning. Using phytic acid as both the P source and an etchant, we create a universal in situ approach to core–shell single-atom catalysts (M 2 -P-CSNC, M 2 = Fe, Co, Ni). The unique core–shell structure achieves stable confinement of polyiodides, rapid ion transport, and protection of active sites, while in situ P doping precisely regulates the local electronic environment and d -band center of the Fe–N x active centers. In situ characterization confirms that Fe–P-CSNC has a strong reversible anchoring ability for polyiodides, which can significantly accelerate redox kinetics. The optimized Fe–P-CSNC/I 2 exhibits almost no capacity decay after 20,000 cycles at a current density of 2 A g −1 . This work’s facile heteroatom doping strategy for electronic modulation offers a reference for high-performance catalyst design in conversion-type energy storage systems. Kindly check and confirm the edit made in the title.1. We have checked and confirmed the edited title.2. We found some issues with Figure 3d and have uploaded the revised image as an attachment.
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PubMed
高影响因子
Journal of Bioresources and Bioproducts
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2026
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IF 13
Fengzhi Tan,Feifan Lu,Jiali Wei,Xing Wang,Jinghui Zhou,Jingyu Xu
The widespread deployment of renewable energy sources worldwide, such as wind power and photovoltaics, has created an urgent need for efficient energy storage systems. Biomass-derived carbon aerogels, due to their environmentally friendly and sustainable properties, have emerged as ideal precursor materials for advanced energy storage applications, particularly in supercapacitors. This study developed a method to prepare phytate-induced phosphorus/sulfur (P/S) co-doped magnesium lignosulfonate-based carbon aerogels (LCAs). Phytate induction facilitated the formation of regular spherical structures while simultaneously optimizing surface morphology and enabling efficient and uniform doping of P and S heteroatoms. The optimized sample, LCA-2-700, the lignin-based carbon aerogel that was prepared with the magnesium lignosulfonate (LS)꞉sodium alginate (SA)꞉phytic acid (PA) mass ratio of 5꞉5꞉2 and carbonized at 700 °C, exhibited a specific capacitance of 362 F/g at the current density of 0.5 A/g, with the assembled device achieving an energy density of 40.1 W·h/kg at a power density of 700 W/kg. After 20 000 cycles, the capacitance retention rate remained at 82.5%, demonstrating excellent electrochemical durability. The high performance was attributed to the synergistic effects of its spherical structure, high specific surface area, and P/S dual-heteroatom doping. This study provides an effective approach for synergistic structure-doping regulation of lignin-based carbon aerogels and provides a potential pathway for practical applications in high-performance supercapacitors.
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高影响因子
Surfaces and Interfaces
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2026
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IF 6.3
Suliang Gao,Siqi Huo,Ruiping Wang,Miaojun Xu,Sheng Li,Bin Li
The development of sustainable thermal insulation materials that combine light weight, high strength, and fire retardancy is essential to support global carbon neutrality goals. Herein, fully bio-based polyvinyl alcohol/phytic acid (PVA/PA) composite aerogels were fabricated through an environmentally benign refrigerator-assisted freezing process without the use of toxic solvents. The strong reactivity of bio-based phytic acid enabled the formation of a robust micro-nano three-dimensional (3D) network, yielding an aerogel with low density (0.075 g cm –3 ), high porosity (94.21%), and ultralow thermal conductivity (33.1 mW·m –1 ·K –1 ). Benefiting from its micro-nano 3D network, the aerogel exhibited excellent mechanical robustness, with compressive strength and specific modulus increasing by 125.7% and 194.5%, respectively. Due to the formation of intrinsic intumescent flame retardant (IFR) system, the aerogel achieved an extremely high limiting oxygen index (LOI) of 41.9% and a UL 94 V–0 rating (self-extinguishing time of only 1.8 s) with significantly reduced heat and smoke release during combustion. Furthermore, a solvent-free thermal chemical vapor deposition (CVD) treatment imparted durable hydrophobicity (water contact angle = 145.6°). This work provides a green and scalable strategy for producing multifunctional bio-based aerogels with great potential for high-performance and sustainable thermal insulation applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2023
·Vol. 140
·期 14
·e53686
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IF 3
Yanwei Zhang,Hong Wang,Yaru Liu,Baolong Niu,Wenfeng Li
Accurate measurement of hydrogen peroxide is of great significance in monitoring human diseases and environmental safety. At present, there are a variety of testing methods, among which the use of electrochemical sensors to accurately measure hydrogen peroxide has gradually become a research hotspot. In this article, phytic acid (PA) with dual functions of doping and cross-linking and HCl with strong ionization capacity was introduced as dopants to co-doping polyaniline, and polyaniline hydrogel with a three-dimensional network structure was prepared. The influence of the HCl/PA co-doping ratio on conductive polyaniline hydrogel (CPAniH) was explored. The synthesis process and mechanism of HCl/PA-CPAniH were analyzed and explained. In addition, the conductivity and mechanism of HCl/PA-CPAniH, as well as the hydrogel characteristics were characterized and studied. A new electrochemical sensor based on polyaniline hydrogel and silver nanoparticles was constructed to detect hydrogen peroxide. The sensor has a good linear relationship, a wide linear range, and a high-detection limit for H 2 O 2 . In addition, it also shows that HCl/PA-CPAniH is a good interface material for electrochemical sensors and has a certain application potential.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
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IF 6.953
Yinchun Fang,Weihao Sun,Junwei Li,Hailong Liu,Xinhua Liu
Polyester/cotton blend fabrics are widely used in clothing and household textiles which combine the comfort of cotton and excellent mechanical strength of polyester. However, their high flammability due to the special “wick effect” resulting from the different thermal decomposition process of cotton and polyester causes greatly potential fire hazards. In this study, fully bio-based intumescent flame retardant (IFR) coating of chitosan/phytic acid (CS/PA) was layer-by-layer (LBL) assembly constructed on polyester/cotton blend fabrics. The LOI value of polyester/cotton blend fabric which was LBL assembly coated by 20 bilayers CS/PA reached 29.2%. And the dripping of coated fabric was eliminated. The results of cone calorimetry test confirmed CS/PA coating greatly improved the flame retardancy of polyester/cotton blend fabrics. Thermogravimetric analysis (TGA) results showed CS/PA coating changed the thermal decomposition process to promote the char formation of polyester/cotton blend fabrics. CS/PA coating on fabric could form the IFR system which acts through both condensed phase action by the catalysis dehydration reaction to forming stable char and gas phase action by the blowing effect. This research provides a new strategy to eco-friendly flame retardant and dripping-resistant for polyester/cotton blend fabrics by bio-based IFR system through facile LBL assembly method.
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PubMed
高影响因子
CELLULOSE
·
2020
·Vol. 27
·期 16
·9699-9710
·
IF 4.21
Zhu Wenju,Hao Shuaishuai,Yang Mingyang,Cheng Bowen,Zhang Jimei
Abstract In the present research, a glycosyl cross-linking coordination chelate flame retardant was designed to enhance durable flame retardancy of cotton fabrics. It was a halogen-free, non-formaldehyde boron acid and phytic acid ammonium salt synergistic flame-retardant system. The flame retardancy and durability of flame retardants prepared by different saccharides were investigated. Results showed that raffinose was the best cross-linking reagent compared with the other monosaccharides and oligosaccharides. The r affinose as cross-linking reagent prepared g lycosyl cross-linking b oron acid and a mmonium salt of p hytic acid flame retardant (r-GBAP) (100 g/L) can obtain the shortest char length of 56 mm and the largest limiting oxygen index (LOI) value of 37.4%. A lower r-GBAP concentration can get good flame retardancy, due to adopt the three curing cycles process. FTIR, XPS, LOI, TG and SEM testing and characterization techniques were used to analyze and research the flame retardancy, durability, thermal oxidation stability and flame-retardant mechanisms of r-GBAP and the treated cotton fibers. Graphic abstract
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高影响因子
TALANTA
·
2019
·
IF 4.916
Yayun Hong,Qiliang Zhan,Yu Zheng,Chenlu Pu,Hongli Zhao,Minbo Lan
In this work, magnetic mesoporous silica microspheres (Mag-MSMs) with ordered radial mesochannels were fabricated by a self-assembly synthesis in chlorobenzene-water mixed system. Then, the obtained Mag-MSMs were modified with polyethyleneimine (PEI), phytic acid (PA) and Ti 4+ (denoted as Mag-MSMs@PEI-PA-Ti 4+ ) via layer by layer (LbL) assembly. Due to the excellent hydrophilicity of PEI and PA and the large amount of Ti 4+ , the Mag-MSMs@PEI-PA-Ti 4+ possessed combined properties of hydrophilic interaction liquid chromatography (HILIC)- and immobilized metal ion affinity chromatography (IMAC)-based materials, which could be used as a dual-purpose material for N-glycopeptides or phosphopeptides enrichment. The proposed Mag-MSMs@PEI-PA-Ti 4+ exhibited an outstanding performance for N-glycopeptides enrichment (selectivity: IgG/BSA = 1:1000; sensitivity: 0.5 fmol/μL IgG) and phosphopeptides enrichment (selectivity: α-casein/BSA=1:5000; sensitivity: 0.2 fmol/μL α-casein). Furthermore, after enrichment with Mag-MSMs@PEI-PA-Ti 4+ , a total of 276 N-glycopeptides assigned to 132 glycoproteins were identified from 2 μL human serum and 1645 phosphopeptides corresponding to 704 phosphoproteins were identified from 200 μg HeLa cell extracts.
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Nano Energy
·
2024
·
IF 16.8
Hanchen Wang,Ruzhi Shang,Junwei Chen,Xiaoya Jin,Kailiu Chen,Biao Huang,Huamin Chen,Qi-Lin Lu
Chitosan hydrogel has garnered significant interest for its potential to confer excellent biocompatibility, degradability, and renewability upon flexible electronics. Nonetheless, its inherent mechanical weaknesses have necessitated compromises in terms of flexibility, conductivity, and sensing sensitivity, thereby limiting its applicability. In this study, we present a flexible chitosan sensing hydrogel with remarkable properties, including high-conductivity (9.96 S/m) and ultra-sensitivity (gauge factor=11.83), achieved through the coordination effect of phytic acid (PA). A novel protective cross-linking strategy was employed, balancing the strong complexing ability of PA through the regulation of carboxylated cellulose nanofiber (CCNF) to establish a moderate cross-linked network between chitosan (CS) and polyethyleneimine (PEI). CCNF not only forms hydrogen bonds with CS and PEI, occupying some active sites that could chelate with PA, but also repels adjoining PA via electrostatic repulsion , thereby preventing excessive coordination. Consequently, the resulting hydrogel exhibits superior properties, including excellent flexibility, deformability , conductivity and GF, while simultaneously possessing high sensing sensitivity and energy harvesting capacity. Remarkably, the hydrogel-assembled sensors demonstrate outstanding performance in monitoring subtle facial expression changes, throat motion, and various limb movements. Even more impressively, the hydrogel-based triboelectric nanogenerator (TENG) exhibits exceptional energy harvesting capacity (1070.8 mW/m 2 ) and high accuracy (98 %) for handwriting recognition. This study presents a promising approach for constructing biomass-based multifunctional hydrogels with enhanced sensing capabilities and energy harvesting abilities, paving the way for their utilization in high-performance self-powered devices and intelligent handwriting recognition systems.
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高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2024
·
IF 1.5
Liang Lili,Cheng Qian,Yang Zhou,Lin Xiaoyan,Chen Yan,Luo Xuegang
The extraction of uranium from strong acidic radioactive wastewater is vital and challenging to sustainable development of nuclear energy. In order to improve the selective uranium adsorption, a phytic acid decorated multiple hydorgel network (MA-U-PA/GG-CS-Ca) was constructed by incorporating phytic acid modified covalent organic polymers to gellan gum and chitosan hydrogel by supramolecular self-assembly. The results indicated that the selectivity ratio (SU) of MA-U-PA/GG-CS-Ca for uranium adsorption increased from 28 to 72%. The adjacent –P = O groups within the phytic acid molecule reduces the free energy of the coordination reaction with uranium, which is favorable to the uranium adsorption under acidic condition.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xin Li,Hebo Shi,Ruixue Hong,Yingying Peng,Zhaoqing Liu,Boya Xiao,Shaoheng Yang,Chang-an Xu,Zhuohong Yang,Yang Hu
The corrosion protection of organic coatings for metal substrates is generally limited because of the unavoidable coating micropores and cracks, even the coating anticorrosion function will lose when it is damaged. Although the addition of nanofillers into the organic coating matrix can effectively address the above issues, it is challenging to facilely and wholesale construct surface-modified nanofillers with synergistic anticorrosion ability of physical barrier, passivation and chelating effect. In this study, we develop a simple one-pot approach for preparing polypyrrole (PPy) modified graphene oxide (GO) nanofillers with the doping of phytic acid (Ph) (namely GO-PPy@Ph nanoparticles) and then incorporating them into epoxy resin (EP) coating system to form the anticorrosion nanocomposite coatings. The research results display that the GO-PPy@Ph nanoparticles can uniformly disperse in the EP coatings to improve their anti-penetrant ability against corrosive media. And the introduction of GO-PPy@Ph nanoparticles effectively enhances the coating adhesion strength and mechanical performance. Moreover, the anticorrosion tests show that the impedance modulus at 0.01 Hz of GO-PPy@Ph coating after 60-day immersion in 3.5 wt% NaCl solution remains at about 10 10 Ω cm 2 . The dramatical anticorrosive performance of the GO-PPy@Ph coating with self-healing performance is attributed to the synergistic protection of impermeable GO-PPy@Ph nanosheets, passivation function of PPy and metal chelation effect of Ph. This study provides an effective and universal avenue to construct multifunctional nanofillers with the synergistic anticorrosion of high physical barrier, passivation and metal chelating effects for developing anticorrosive nanocomposite coatings with high performances, which have highly attractive potential in the commercialization applications of metal corrosion protection.
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高影响因子
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