POLYMER DEGRADATION AND STABILITY
·
2023
·
IF 5.9
Dong Yan,Dong Chen,Jia Tan,Liping Yuan,Zizhi Huang,Dongfang Zou,Penghao Sun,Qiang Tao,Jiyong Deng,Yunchu Hu
A new and efficient flame retardant consisting of Ammonium tris (2-hydroxyethyl) isocyanurate triphosphate (ATITP) was prepared by a solvent-free synthesis method for improving the flame retardancy of poplar wood density boards. The flame retardant mechanism was probed, and the mechanism of capturing combustion radicals, synergistically promoting charring and inhibiting heat was summarized. The density board treated with 20% ATITP had an ultimate oxygen index (LOI) of was up to 65.1%. In the experiment of cone calorimetry (CONE), the total heat release (THR) of flame retardant density board was reduced by 73.9% compared with the pure density board sample, while the heat release rate (HRR), CO and CO 2 production were significantly reduced. In addition, the analysis with a thermogravimetric infrared coupler (TG-FTIR) and thermal cracking gas mass spectrometer (Py-GC–MS) revealed that the flame retardant exerted a gas-phase and condensed-phase flame retardant during the thermal decomposition process to alter the thermal cracking pathway of wood powder. It was demonstrated that the poplar density board treated with ATITP has good flame retardancy, which provides a simple and efficient method for flame retardant density board for building materials.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Mengmeng Zhang,Zhuoran Song,Daohu Sheng,Yantao Duan,Qi Zhao,Siyao Chen,Weijin Li,Aming Xie
Two-dimensional (2D) materials are considered excellent electromagnetic wave absorbing (EMW) materials because of their ultrathin characteristics, ultra-large specific surface area, and excellent processing properties. However, existing preparation methods (e.g., mechanical stripping, chemical vapor deposition) are difficult to balance between cost, scale and quality. In this study, polymer semiconductor p(C3O2)x with controllable 2D nanosheets micromorphology and enriched with oxygen-containing groups is introduced as a precursor. Its rich oxygencontaining groups can be used as anchor sites for metal ions. The results show that the prepared samples all exhibit a 2D nanosheets structure. Due to the structural features of 2D materials, numerous heterointerfaces are formed within the composites, greatly promoting interfacial polarization. Moreover, oxygen incorporation and crystalline defects substantially improve dipole polarization. The incorporation of metallic components further boosts the magnetic loss performance. Benefiting from the combined influence of multiple attenuation mechanisms and distinctive microstructural properties, the OC-Cu achieves a minimum reflection loss (RLmin ) of -63.7 dB and an effective absorption bandwidth (EAB) of 6.44 GHz. This work provides a new idea for the construction of high-performance EMW absorbing materials.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiaxing Fu,Boyan Fu,Leyao Bi,Jiahui Lin,Junsheng Wen,Wenyue Tian,Chunjie Wang,Yue Wang
Given the potential risks of metabolic toxicity and organ damage associated with ethylene glycol vapor exposure, the implementation of effective monitoring is essential. In this study, LaFeO 3 -SnO 2 composites with varying mass ratios were synthesized via a hydrothermal-water bath method and subsequently evaluated for ethylene glycol sensing properties. Experimental results indicate that the LaFeO 3 :SnO 2 composite with a mass ratio of 1:2 shows the best sensing performance toward ethylene glycol among all samples. At 145 °C, it achieves a response of 89.522–100 ppm ethylene glycol, which is 435.4 % and 3137.7 % higher than the responses of pure SnO 2 and LaFeO 3 , respectively. Moreover, the operating temperature is 90 °C lower than that of pure LaFeO 3 . Meanwhile, the sensor exhibited great selectivity, repeatability and long-term stability. The improved performance could be attributed to the unique morphology of the LaFeO 3 -SnO 2 composite and the formation of a p-n heterojunction, which facilitated enhanced charge transfer and provided more active sites for ethylene glycol adsorption. Furthermore, density functional theory (DFT) calculations were performed to theoretically confirm the enhancing effect of the heterojunction on the sensing performance. This work is expected to provide new insights and serve as a valuable reference for the application of LaFeO 3 -SnO 2 gas sensors in the detection of ethylene glycol.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Xing Zhang,Peng Deng,Mengyang Zheng,Yanling Hao,Xiu Gong,Fuzhong Gong,Jing-Chang Li
Anion redox reactions in layered cathode materials have attracted significant attention due to their remarkable potential to enhance the capacity and energy density of lithium-ion batteries. However, in conventional sulfide-based cathodes such as Li x TiS 2 , anionic redox is only partially reversible at high voltages and suffers from rapid capacity fading. These challenges primarily originate from the intrinsic electronic band structure of Li x TiS 2 , where the Ti 3+ /Ti 4+ redox couple lies far above the S 3 p band, suppressing ligand-to-metal charge transfer during Li + (de)intercalation. To overcome this limitation, we introduce a bandgap-engineering strategy via partial substitution of Ti 3+ with Cr 3+ , effectively narrowing the d- p bandgap and activating sustainable sulfur redox chemistry. The Cr-substituted compound, Li 0.80 Cr 0.67 Ti 0.33 S 2 , exhibits sustainable sulfur redox activity, thereby achieving a higher capacity of 223.0 mA h g −1 and nearly doubling the energy density of pristine Li 0.80 TiS 2 . Furthermore, Li 0.80 Cr 0.67 Ti 0.33 S 2 preserves its layered framework throughout the whole (de)lithiation process, indicating effective suppression of structural collapse during sulfur redox. Therefore, it demonstrates outstanding rate performance (77.5% capacity retention at 5.0C) and excellent long-term cycling stability (80% retention after 330 cycles), significantly outperforming its undoped counterpart. These findings highlight the critical role of ligand-metal d- p orbital overlap in enabling and stabilizing sustainable sulfur redox, providing valuable insights for the design of high-performance cathodes for next-generation lithium-ion batteries.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Qilong Zhang,Zhicai Zhu,Da Shen,Hui Yang
This paper reports a feasible method to prepare pure organic polymeric nanocomposites with enhanced dielectric and hydrophobic performance. Homogeneous polystyrene (PS) microspheres with an average diameter of about 250 nm was firstly synthesized through emulsion polymerization. The blend film containing PS, PDMS and P(VDF-TrFE) are prepared by a simple solution-blending and spin-coating method. The blend film exhibits enhanced dielectric and hydrophobic properties. Typically, the dielectric constant of the blend film with 23 wt% PS reaches 21 at 100 Hz, which is 3 times that of PDMS/P(VDF-TrFE) (mass ratio: 2/3) due to enhanced interfacial polarization caused by PS addition. Meanwhile, the blend film with 23 wt% PS possesses a large apparent contact angle of 125° because the presence of a rough surface makes the solid-liquid contact surface larger than the apparently observed area, thus enhancing hydrophobicity. All the improved performances show great potential application for electrowetting devices.
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2025
·
IF 2.4
Yan Zhao,Qianwen Zheng,Jiahao Wang,Lekang Cui,Helin Pan,Yayun Zhang
BACKGROUND The design of catalysts, particularly those with industrially practical dimensions, is critical for advancing wastewater treatment. RESULTS We report a scalable strategy that integrates MOF-derived Co active sites into millimeter-sized hollow carbon spheres (HCS) prepared via phase separation of polyacrylonitrile. The resulting Co@HCS combines hierarchical porosity and graphitized shells with confined Co nanoparticles and Co–N–C sites, enabling efficient peroxymonosulfate (PMS) activation. Compared with HCS and Co@ZIF, Co@HCS achieved >80% p -chlorophenol (4-CP; 50 mg L −1 ) removal within 10 min, with activity enhanced by increased Co loading and optimal PMS dosage (0.50 g L −1 ). The catalyst exhibited broad pH adaptability (50.1–90.2% removal at pH 3–9), strong temperature responsiveness and low apparent activation energy (16.3 kJ mol −1 ). Radical quenching and electron paramagnetic resonance confirmed SO 4 •− as the dominant species, while X-ray photoelectron spectroscopy revealed dynamic Co 0 /Co 2+ /Co 3+ cycling sustaining PMS activation. Notably, the millimeter-sized morphology of Co@HCS enabled stable >70% 4-CP removal over 48 h in continuous flow (addressing nanocatalyst drawbacks). CONCLUSION Co@HCS is an efficient, durable and recyclable catalyst. This catalyst combines nanoscale catalytic precision with macroscopic practicality, facilitating the practical application of persulfate-driven advanced oxidation processes and providing a durable and recyclable solution for such processes in continuous-flow water treatment. © 2025 Society of Chemical Industry (SCI).
✓ 已验证
产品关联
DOI
高影响因子
Advanced Healthcare Materials
·
2019
·Vol. 8
·期 13
·1900136
·
IF 6.27
Xiaoyan Ma,Ze Zhao,Huan Wang,Yuxiao Liu,Yueshuang Xu,Jing Zhang,Baoan Chen,Ling Li,Yuanjin Zhao
Multidrug resistance is one of the leading causes of chemotherapy failure in cancer patients. Early detection and capture of drug-resistant tumor cells can facilitate the monitoring of the therapy process and improve the prognosis of patients. In this study, novel P-glycoprotein (P-gp) antibody modified porous hydrogel particles are proposed for drug-resistant tumor cells capture. The hydrogel particles employ a highly biocompatible hydrogel, methacrylate gelatin (GelMA), as the carrier and replicate from the silica colloidal crystal beads. By the modification of P-gp antibody probes on their surfaces, the hydrogel particles are endowed with the ability to capture drug-resistant tumor cells, which overexpress specific components of P-gp on their membranes. Additionally, the acquired ordered porous nanostructure of the particles can provide not only more surface area for antibody immobilization but also a nanopatterned platform for highly efficient target cell capture. The above advantages make the porous hydrogel particles ideal for efficient capture and detection of the drug-resistant tumor cells, which can be expected to facilitate the point-of-care pharmacotherapy and promisingly improve the patient outcomes.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yuhua Yan,Shuixin Xia,Hao Sun,Yuepeng Pang,Junhe Yang,Shiyou Zheng
Phosphorus (P) has been regarded as one of promising anodic materials for Li- and Na-ion batteries owing to the merits of high theoretical specific capacity and natural abundance. Nevertheless, its practical applications suffer from huge volumetric change during cycling and low electronic conductivity with the result of fast capacity decay and low Coulombic efficiency (CE). To be noted that, amorphous red P (RP) is universally used as the SIB anodic material in most of the reported works. Herein, we successfully construct crystalline red P (CRP) nanorods confined within 3D rGA (CRP-rGA) architecture composite via prepositioned nanoseeds following with secondary growth method. The unique composite was investigated as anode for sodium-ion batteries (SIBs) for the first time and presents competitive sodium storage performance. For instance, with an ultra-high P loading (75.9%) in the electrode, it delivers an initial specific capacity of 2427 mA h g −1 (93.5% of the theoretical capacity) with Columbic efficiency of ~82% at 0.1 A g −1 , and the relatively higher capacity can be retained at 1 and 2 A g −1 with progressive cycling. The evolutions of CRP-rGA during charging and discharging have also been investigated systematically through ex-situ characterizations such as XPS, TEM, Raman and SEM. It is believed that the good electrochemical Na-ion storage performance of the CRP-rGA composite can be attributed to high dispersion of CRP in rGA , strong interaction between CRP and rGA together with unique porous structure of the electrode. This work may provide some new insights into alloy reaction of crystalline phosphorus and demonstrate a promising new anode design strategy for next-generation batteries.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2015
·
IF 2.752
Sha Jin,Dian Li,Peng Yang,Jia Guo,Jennifer Q. Lu,Changchun Wang
Stimuli responsive drug delivery systems have attracted considerable attention due to their ability to deliver drugs on demand to special tissues and cells (e.g. cancer cells). In this paper, we fabricated a new kind of redox/pH dual stimuli-responsive biodegradable poly(methacrylic acid) (MAA) nanohydrogels crosslinked by N , N -bis(acryloyl)cystamine (BACy) through a facile reflux-precipitation polymerization. Subsequently polyethylene glycol (PEG) was grafted onto the surface of nanohydrogels to improve their long circulation time. This kind of PEGylated nanohydrogels could be degraded into short linear polymer chains in the solution of 10 mM glutathione (GSH) due to the sensitive disulfide bonds in the cross-linked networks. Interestingly, we found that the hydrophilic PEGylated nanohydrogels could be simultaneously loaded with hydrophilic drug doxorubicin (DOX) and hydrophobic drug paclitaxel (PTX) with high drug loading efficiency because of its regional hydrophobic nature in the nanohydrogels. The cumulative release profile showed that either lower pH (5.0) or reducing environment (GSH) or a combination could significantly accelerate the drug release from the drug-loaded nanohydrogels. In addition, the experimental results on living cells indicated that the multi-drug-loaded system had synergistic effect on cancer therapy.
✓ 已验证
DOI
高影响因子
POLYMER
·
2017
·
IF 3.684
Jia-Min Li,Chuan-Shan Hu,Jian-Ming Shao,Hui-Juan Li,Peng-Yun Li,Xi-Chuan Li,Wei-Dong He
Ternary hydrogels composed of poly[acrylamide- co -2-(dimethylamino)ethyl methacrylate] [P(AM- co -DMAEMA)], poly(vinyl alcohol) (PVA) and β -cyclodextrin ( β -CD) were fabricated based on the multiple physical interactions such as inclusion complexation, hydrogen bonding and polymer crystallinity , and exhibited high storage modulus . To illustrate the individual role of each physical interaction, symmetrical investigation has been performed. P(AM- co -DMAEMA)s with two compositions , prepared by radical polymerization at −20 °C below the freezing point of reaction medium of water, were served as the inclusion guest for the inclusion host of β -CD. The inclusion complex between dimethylaminoethyl group of DMAEMA and β -CD was identified through 2D NOESY NMR spectroscopy . Hydrogen bonding between each pairs of hydrogel components was confirmed with FTIR analysis and contributed the second form of crosslinkage. Under freezing polymerization and further freezing-thawing treatment, PVA component tended to crystallize to serve as the third type of physical crosslinkage, which was recognized with X-ray diffraction. Rheological and thermo-gravimetrical analysis was used to inspect the modulus and thermal stability of the hydrogels, respectively. Three hydrogels of P(AM- co -DMAEMA)/PVA-g- β -CD, P(AM- co -DMAEMA)/PVA/ β -CD and P(AM- co -DMAEMA)/PVA were synthesized under the same condition to make the comparison. The whole results disclosed the strong dependence of hydrogel properties on the hydrogel components, reflecting the synergistic effects of different physical crosslinkages for the formation of those physical hydrogels.
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Weiwei Mao,Bin Cai,Zhizhen Ye,Jingyun Huang
A glucose oxidase (GOx) based p-NiO/n-Bi 4 Ti 3 O 12 sandwich heterojunction was fabricated and explored as a glucose electrochemical sensor. The constructed GOx/p-NiO/n-Bi 4 Ti 3 O 12 sandwich structure effectively prevents the leakage of GOx. Dandelion-like Bi 4 Ti 3 O 12 nanowires were directly grown on the titanium foil substrates, and dense NiO nanoparticles were deposited by employing pulsed laser deposition at room temperature. Amperometric measurements towards glucose were carried out, and efficient direct electron transfer was successfully achieved. The enzyme biosensor showed a linear range from 20 μM to 3.55 mM (R = 0.999) with an ultrahigh sensitivity of 215 μA mM −1 cm −2 , response time within 2 s, low detection limit of 1.26 μM (S/N = 3) and high specificity. The apparent Michaelis-Menten constant (Km app) was estimated to be 0.22 mM. Intercrossed nanowires and interconnected pores favor the electrons transfer and the massive GOx loading. Binder-free feature leads to a seamless connection between Bi 4 Ti 3 O 12 nanowires and the substrate. Co-catalysis of GOx and p-NiO/n-Bi 4 Ti 3 O 12 heterojunction plays a synergetic role in gaining performance boosts. The GOx based p-NiO/n-Bi 4 Ti 3 O 12 heterojunction biosensor remedies the limitation of enzyme-based glucose sensor and be potentially applied in practice.
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Youlin Wu,Pengfei Zhu,Youji Li,Lijun Zhang,Zhiliang Jin
Owing to the creation of a large number of surface active sites, surface modification is an efficient strategy for improving the catalytic performances of photocatalysts. Herein, zero-dimensional (0D) p-type NiS species were developed in situ on the large surface of NiAl-LDH by controlled vulcanization. Importantly, the development of the 0D p-type NiS species not only enriched the active sites but also triggered the in situ formation of a NiS/NiAl-LDH p–n heterojunction due to NiAl-LDH, which was utterly underdeveloped in the vulcanization modification procedure. This undoubtedly accelerated the faster separation and migration of charge carriers and yielded improved photocatalytic hydrogen evolution. The optimum hydrogen production rate of the NiS/NiAl-LDH photocatalyst could reach 3408 μmol·g–1·h–1 using a 5 W LED simulation visible light, which was 52-fold that of NiAl-LDH. The design and construction of the in situ p–n heterojunction may provide a perspective for the formation of p–n heterojunction photocatalysts with a closer contact interface and highly enhanced photocatalytic activity.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）