IONICS
·
2024
·Vol. 30
·期 7
·3915-3924
·
IF 2.4
Guo Bing,Wang Qiuyue,Wang Zhixing,Meng Wu,Wang Jiexi,Duan Hui,Li Xinhai,Peng Wenjie,Yan Guochun,Guo Huajun
All-solid-state lithium batteries (ASSLBs) are regarded as the most promising alternative to traditional liquid lithium-ion batteries due to their high-energy density and excellent safety. As an important part of ASSLBs, composite polymer electrolytes (CPEs) with excellent comprehensive performance have attracted wide attention from researchers. Herein, a series of CPEs were prepared by employing Li 6.4 Ga 0.2 La 3 Zr 2 O 12 (LGLZO) submicron particles with cubic phase as fillers in polyethylene oxide (PEO) matrix. The tape-casting method was employed to prepare PEO-LiTFSI-x% LGLZO (CPE-x, where x = 0–80). In these CPE-x, the CPE-40 exhibits elevated ionic conductivity (6.20 × 10 −5 S cm −1 at 20 °C and 1.88 × 10 −4 S cm −1 at 60 °C), attractive Li + transference number (0.31 at 60 °C), low activation energy barrier of lithium-ion migration, wide electrochemical window, and high critical current density of 1.3 mA cm −2 . Furthermore, the LiFePO 4 | CPE-40 | Li batteries deliver outstanding cycle performance (capacity retention of 85.43% after 225 cycles at 0.2C and 60 °C) and rate performance. These results show that the PEO-base solid-state electrolytes filled with submicron LGLZO particles possess a broad application prospect.
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高影响因子
INTERNATIONAL JOURNAL OF LEGAL MEDICINE
·
2024
·Vol. 138
·期 4
·1323-1328
·
IF 2.2
Yu Zhonghao,Zhao Erjuan,Shi Qing,Yuan Yuhao,Ma Jinghong,Zhou Luwang,Duan Yijie,Zhou Yiwu
Brodifacoum exerts its antagonistic effect against the metabolism of vitamin K, an essential component in the synthesis of blood coagulation factors. This effect ultimately hinders the blood’s capacity to clot effectively, rendering it a commonly employed rodenticide. Instances of lethal poisonings are exceedingly rare owing to expeditious medical intervention and treatment. Within this report, we present a case of brodifacoum-induced homicide, wherein the patient exhibited distinct clinical examinations and symptoms. Moreover, the patient’s blood sample exhibited a noteworthy brodifacoum concentration of 0.681 µg/mL even after a period of 43 days following the incident of poisoning. Although an autopsy was not conducted due to religious restrictions, we endeavor to reasonably deduce the cause of death and furnish corroborative evidence for clinical diagnosis, treatment, and forensic examination in instances involving brodifacoum poisoning.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2016
·Vol. 51
·期 17
·7887-7898
·
IF 2.302
Lian Qingsong,Li Yan,Yang Tao,Li Kai,Xu Yifen,Liu Liang,Zhao Jingbo,Zhang Junying,Cheng Jue
Allyl-based epoxy resin/Sulfur (S) system is a facile and novel dual-curing system which conducts a unique curing mechanism. In this paper, Bisphenol-A diglycidyl ether (BADGE) and 2-Allylphenol (OAP) cured by S were comparatively investigated to clarify the dual-curing mechanism of Epoxy (EP)/Allyl Compound (AC)/S system. When the temperature was above 170 °C, DSC and FTIR data showed that S could cleave to form thiyl radicals, and FTIR, NIR, and 1 H NMR measurements proved the disappearance of allyl groups and the generation of thiol groups by the thiyl radicals abstracting α-H atoms of allyl groups in the OAP/S reaction system. Real-time infrared spectroscopy (RT-FTIR) results showed that the
reaction of the generation of thiol groups is the dominant reaction in the two possible pathways of the OAP/S system; allyl groups and epoxy groups disappeared sequentially in the OAP/S/BADGE system. DSC curve also revealed the one-stage reaction for OAP/S system and two-stage reaction for OAP/S/BADGE system. These data were used to develop a detailed, experimentally validated pathway for the dual-curing of EP/AC/S system, in which thiol groups are important intermediate, and the dual-curing process included the crosslinking of double bonds that initiated by thiyl radicals and the ring-opening reaction of epoxy groups with thiol groups. Besides, the dual-curing mechanism of EP/AC/S system shares a close resemblance to the classical rubber vulcanization mechanism and the recent thiol-ene radical addition mechanism.
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高影响因子
IONICS
·
2016
·Vol. 22
·期 10
·1947-1955
·
IF 2.119
Zhuo Kelei,Ma Xueli,Chen Yujuan,Wang Congyue,Li Aoqi,Yan Changling
The molecular imprinting technique is powerful to prepare functional materials with molecular recognition properties. In this work, a potentiometric sensor was fabricated by dispersing molecularly imprinted polymers (MIPs) into plasticized PVC matrix and used for the determination of 1-hexyl-3-methylimidazolium cation ([C 6 mim] + ) in aqueous solution. The MIPs were synthesized by precipitation polymerization using 1-hexyl-3-methylimidazolium chloride ([C 6 mim]Cl) as the template molecule, methacrylic acid (MAA) and ethylene glycol dimethacrylat (EGDMA) as the functional monomers, and EGDMA also as the cross-linking agent. The as-prepared electrode exhibited a Nernstian response (58.87 ± 0.3 mV per decade) to [C 6 mim] + in a concentration range from 1.0 × 10 −6 to 0.1 mol kg −1 with a low detection limit of 2.8 × 10 −7 mol kg −1 , high selectivity, and little pH influence. The as-prepared electrode was used for the detection of the [C 6 mim] + in distilled water, tap water, and river water with a good recovery. It was also successfully applied in the determination of mean activity coefficients of [C 6 mim]Br in fructose + water systems based on the potentiometric method at 298.15 K.
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高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 191
·期 1
·1-10
·
IF 5.7
Chen Jiawei,Zeng Yan,Zhang Dun,Qi Peng,Liu Xuguang,Song Ruiguo,Wang Peng
A direct and ultra-sensitive surface-enhanced Raman scattering (SERS) immunoassay method is introduced for the detection of Escherichia coli and Staphylococcus aureus . This methodology is based on a sandwich-structured complex probe (SCP) mechanism, combined with target-induced strand displacement. Moreover, by leveraging the amplified SERS signal from gold nanoparticles (AuNPs) corresponding to an increase in bacterial count, we achieve quantitative determination. The SCP demonstrates remarkable specificity, sensitivity, and anti-interference capability in bacterial detection. The detection limits for both bacterial strains are as low as 10 CFU/mL. In our selectivity tests, all peak intensities had standard deviations ( n = 3) below 6%. Recoveries in normal human serum were 101–110% for E. coli and 96–101% for S. aureus . In milk, the recoveries were 102–105% for E. coli and 100–105% for S. aureus , respectively, demonstrating a high level of accuracy and resistance to interference. In addition, the SCP offers a dual-detection capability, enabling simultaneous diagnosis of multiple targets, which greatly simplifies the testing procedure. The findings underscore that this immunoassay platform fulfills the demand for rapid and precise pathogenic bacterial diagnosis, holding substantial potential for practical applications. Graphical abstract
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高影响因子
Journal of Oceanology and Limnology
·
2024
·Vol. 42
·期 1
·163-173
·
IF 1.3
Ma Dandan,Zhou Qingli,Sui Liying,Guo Qingbin,Liu Huanhuan,Liang Honghe,Li Zhenjing,Sang Zhongna
Deltamethrin (DEL), a commonly used pyrethroid pesticide, results in higher reactive oxygen species (ROS) levels in aquatic animals, which consequently unbalance the redox state. Phlorizin (PHL) is a flavonoid and a natural product promising to prevent or reduce pesticide-induced oxidative stress. Artemia is a micro-crustacean widely used in marine hatcheries and an experimental aquatic organism for environmental toxicology research. This research aimed to evaluate the toxicity of DEL on Artemia and the antioxidative effect of PHL against the toxicity. Results show that 0.08-mg/mL PHL exerted its antioxidative effects on hatching percentage of the cysts in 24-h incubation and on body length and survival rate of Artemia in 12-d culture. After 12-d culture, 12-, 24-, and 36-h DEL exposure showed significant drops in SOD, CAT, and GSH-Px enzyme activities, and significant increases in ROS and malondialdehyde (MDA) levels in Artemia ( P <0.05). On the contrary, 0.08-mg/mL PHL application improved the enzyme activities and decreased the ROS and MDA levels ( P <0.05). Moreover, 0.08-mg/mL PHL significantly increased mRNA expression levels of Cu/Zn SOD, CAT, GST, HO-1, NQO1 , and Nrf2 , and decreased mRNA expression level of Keap1 in the DEL-exposed Artemia ( P <0.05). Therefore, DEL is toxic to Artemia , while PHL alleviates DEL-induced oxidative damage by possibly regulating the Nrf2 signaling pathway. This study provided a theoretical basis for PHL to reduce pesticide-induced toxicity in aquatic animals.
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 4
·1-12
·
IF 5.3
Han Hong,Ji Yuhan,Zhao Xin,Yin Ling,Liu Xiangyi,Sha Jingquan
A colorimetric sensing method for salicylic acid (SA) was developed by designing and fabricating bimetallic oxide nanozymes. Firstly, by calcinating MIL-100(Fe)@PMo 12 (MOFs@POMs) at different temperature, Fe 2 (MoO 4 ) 3 -Ts (T = 400℃, 500℃, 600℃, 700℃) nanoparticles (NPs) were successfully prepared. Secondly, by evaluating the peroxidase-like activities, Fe 2 (MoO 4 ) 3 –600 NPs shows the best peroxidase-like activity attributed to the Fenton-like effect and the synergistic coupling interaction between Mo and Fe. Finally, based on the specific complexation between SA and Fe 3+ , a sensitive colorimetric sensor for SA was established, which exhibits superior selectivity and interference with a detection limit of 0.11 μM and a linear range of 10 to 100 μM, the lowest LOD for SA to date, to the best of our knowledge. Graphical abstract
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PubMed
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 3
·1-12
·
IF 2.6
Zhang Qinghua,Li Mingzhuan,Feng Peifeng,Meng Luoli,Jian Xigao,Xu Jian
Carbon fiber thermoset composites pose significant challenges due to their inability to be reprocessed and the difficulties in recycling carbon fibers. Vitrimer materials with reversible dynamic covalent bonding offer a promising solution for the degradation of thermosetting resins and the recycling of carbon fibers. However, their practical application is limited by inability to quickly release stresses from deformation and long degradation times. To address these limitations, this study presents a novel vitrimer material based on free amine-catalyzed aromatic dynamic disulfide exchange. The dynamic disulfide exchange network, catalyzed by free amines, exhibits rapid stress relaxation, with a relaxation time of only 14 s at 180 °C. This exceptional dynamic exchange capability grants the vitrimer material outstanding self-healing properties, shape memory functionality, and recycling performance. Moreover, the higher concentration of disulfide bonds and the generation of small molecules increase the susceptibility of the crosslinked network to thiol degradation, resulting in resin degradation within 5 h. Additionally, this research successfully applies the vitrimer material as a matrix to prepare carbon fiber composites with exceptional mechanical properties. Furthermore, by degrading the resin matrix, effective recycling of carbon fibers is achieved, contributing to sustainable practices in the automotive and aerospace industries.
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2023
·Vol. 109
·期 1
·162-173
·
IF 2.5
Gao Shuai,Yang Ting,Liu Shuning,Liu Kai,Cao Zeqi,Pang Wanjun,Jiang Hongyi
The preparation of aluminum-doped silica aerogel (ASA) typically utilizes alumina alkoxides or inorganic aluminum salts as precursors usually hindered by high cost or precursor instability. In this study, we prepared a high-temperature resistant ASA via the sol-gel and atmospheric pressure drying (APD) method, utilizing an inexpensive aluminum sol as the aluminum source, tetraethyl orthosilicate (TEOS) and basic silica sol as the composite silicon source. The effects of the Al/Si molar ratio and calcination temperature on the structure, morphology, and thermal stability of ASA were investigated. The results revealed that ASA-0.2 (with an Al/Si molar ratio of 0.2) exhibited a specific surface area of 616.3 m 2 /g at room temperature, whereas ASA-0 was 508.2 m 2 /g. After calcination at 1000 °C for 2 h, ASA-0.2 maintained a significantly higher specific surface area (290.0 m 2 /g) compared to ASA-0 (23.9 m 2 /g). Mechanism analysis indicated that adding aluminum sol not only improved the strength of the aerogel skeleton but also inhibited the phase transition of silica, effectively enhancing the high-temperature resistance of the aerogel. The utilization of inexpensive and stable aluminum sol as a precursor presents a promising approach for the industrial production of heat-resistant aerogels. Graphical
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高影响因子
Journal of Applied Spectroscopy
·
2023
·Vol. 90
·期 3
·670-675
·
IF 0.7
Yan Kexin,Li Jinlan,Zheng Yuansong,Yan Zihong
Carbon dots (CDs) are of great significance for metal ion detection. Herein, CDs without surface functional groups were synthesized through a simple one-step hydrothermal method using 4,4'-bipyridine as the carbon source. The results showed that the synthesized CDs have good selectivity for Fe 3+ detection, and the CDs respond well to metal ions as Lewis bases. This detection method is unlikely to be affected by sewage systems because it has excellent sensitivity. The detection range for Fe 3+ concentrations is between 1.0 × 10 –8 and 1.0 × 10 2 mol/L, and the detection limit is 1.0 × 10 –8 mol/L.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 11
·16940-16957
·
IF 0
Lyu Shiqi,Abidin Zurina Zainal,Yaw Thomas Choong Shean,Resul Mohamad Faiz Mukhtar Gunam
The applications of polysulfides derived from natural plant oil and sulfur via the inverse vulcanization in the removal of heavy metals from aqueous solutions suffered from their low porosity and scarce surface functionality because of their hydrophobic surfaces and bulk characteristics. In this study, polysulfides from sulfur and palm oil (PSPs) with significantly enhanced porosity (13.7–24.1 m 2 /g) and surface oxygen-containing functional groups (6.9–8.6 wt.%) were synthesized with the optimization of process conditions including reaction time, temperature, and mass ratios of sulfur/palm oil/NaCl/sodium citrate. PSPs were applied as sorbents to remove heavy metals present in aqueous solutions. The integration of porosity and oxygen modification allowed a fast kinetic (4.0 h) and enhanced maximum sorption capacities for Pb(II) (218.5 mg/g), Cu(II) (74.8 mg/g), and Cr(III) (68.4 mg/g) at pH 5.0 and T 298 K comparing with polysulfides made without NaCl/sodium citrate. The sorption behaviors of Pb(II), Cu(II), and Cr(III) on PSPs were highly dependent on the solution pH values and ionic strength. The sorption presented excellent anti-interference capability for the coexisting cations and anions. The sorption processes were endothermic and spontaneous. This work would guide the preparation of porous polysulfides with surface modification as efficient sorbents to remediate heavy metals from aqueous solutions.
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PubMed
CELLULOSE
·
2023
·Vol. 30
·期 16
·10427-10436
·
IF 5.7
Wu Yuhang,Li Yuwen,Zheng Yanchun,Yao Juming,Gao Junkuo
Metal–organic frameworks (MOFs) have received widespread attention in recent years. However, the powder form of MOFs limits their large-scale applications. To facilitate the application of MOFs, mass production and shaped manufacturing of MOFs is significantly effective. Herein, a generic method based on a simple polymerization technique is proposed to prepare highly porous MOF–cellulose composite beads and the application of these composite beads in dye removal and recovery is displayed. Non-toxic solvent water and biodegradable sodium carboxymethylcellulose (CMC) were used as raw materials in the synthesis method. In addition to maintaining the crystallinity and porosity of the MOFs embedded in the cellulose matrix, the unique three-dimensional lamellar interconnected structure provides good mechanical properties for the composite beads. To demonstrate the practicality of these composite beads, a recycling processing system was built as a proof-of-concept device. MIL-100/CMC-HD can effectively degrade more than 95% of the dye and can be recycled multiple times. The superiority of the MOF–cellulose composite beads is highlighted by their ease of recycling and storage compared to MOF powder. Graphical abstract MOF/carboxymethylcellulose porous composite beads are synthesized in a simple one-step process. The lamellar interconnected structure not only facilitates the diffusion of contaminants in water but also provides good mechanical properties.
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高影响因子
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