POLYMER SCIENCE SERIES B
·
2020
·Vol. 62
·期 4
·368-374
·
IF 0.976
Qian Zhao,Zhan Yi-Kai,Liu Yu-Fei,He Min,Gong Yong-Ji
Abstract Poly( N -(3-carboxyphenyl)maleimide- alt -styrene) with superior heat-resistance was synthesized by free radical copolymerization and its structure was confirmed by FTIR and NMR spectroscopy. To show the advantages in heat-resistance of the synthesized copolymers, the thermal properties of poly( N -phenylmaleimide- alt -styrene) and poly( N -phenylmaleimide- alt -maleic anhydride) with similar structures were determined. DSC/TG analysis showed that the synthesized copolymer exhibited the better thermal properties than two other copolymers due to the formation of a chemically crosslinked three-dimensional network during heating.
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CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yuansong Luo,Han Gao,Xiujian Zhao
The NASICON-type Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) is considered to be one of the most promising solid electrolytes because of its excellent chemical stability against moisture and considerable total ionic conductivity . Nevertheless, the poor sinterability and low grain boundary ionic conductivity of LATP limit its practical commercial applications. Herein, Li 2 CO 3 ·Bi 2 O 3 (abbreviated as LB), as a sintering aid, was introduced into LATP to improve its sinterability and ionic conductivity. It was demonstrated that the addition of LB promoted the liquid phase sintering of LATP by forming the secondary phases with a low melting point, thereby promoting the growth of grains and making the contact between the grains closer. With the help of LB, the sintering temperature of LATP was reduced to about 900 °C. A series of comparative investigations indicated that the LATP-2LB ceramic pellets sintered at 900 °C exhibited the highest total ionic conductivity of 0.673 mS/cm. Meanwhile, the relative density and grain boundary ionic conductivity of LATP-2LB ceramic pellets sintered at 900 °C reached 95.28% and 3.835 mS/cm, respectively, which is much higher than 77.16% and 0.264 mS/cm of LATP-0LB ceramic pellets sintered at the same temperature. Obviously, LB can effectively improve the sinterability of LATP while increasing its ionic conductivity, providing a new strategy for preparing LATP ceramics with excellent properties.
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NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Yuan Zhou,Wenyue Jiao,Lei Tan,Yan Hao,Yicheng Wang,Tingrui Lin,Huazheng Sai
A superhydrophobic sponge (GO-g-PBA/APTES/MS) was fabricated through a facile and cost-effective dipping method. The as-prepared GO-g-PBA/APTES/MS adsorbed a broad variety of oils and organic solvents and exhibited high oil adsorption capacity (67.4–163.3 g g−1). The GO-g-PBA/APTES/MS could be utilized as an efficient filter for continuous oil/water separation with the assistance of a peristaltic pump. Meanwhile, this superhydrophobic sponge could be easily recovered by simple squeezing and reused for at least 70 cycles, maintaining a high adsorption capacity. Furthermore, GO-g-PBA/APTES/MS displayed superior stability in corrosive liquids such as acidic, alkaline, and salty environments. These results provided a useful avenue for utilization of the GO-g-PBA/APTES/MS, demonstrating the potential for applications in oil/water separation and oil spill collection.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Haotian Hao,Yao Zhang,Shuo Xu,Zihao Wang,Yili Wang,Shan Wang,Baoyou Shi
Enriching low-concentration phosphorus in water is prerequisite for phosphorus recovery. In this study, a polyvinyl alcohol (PVA)-assisted high-temperature stabilization method was developed to synthesize a magnetically recoverable La(OH) 3 -Fe 2 O 3 composite, designated as PMLH, via stable crosslinking. Compared with MLH-1, a conventionally synthesized La(OH) 3 /Fe 2 O 3 composite, PMLH-1 (La/Fe molar ratio = 1:1) exhibited 31.77 % more La(OH) 3 adsorption sites and maintained 2.32 times higher phosphate adsorption capacity after 10 reuse cycles. The optimal synthesis conditions were determined as calcination temperature of 150 °C, PVA dosage of 0.375 %, and La-to-Fe molar ratio of 1.5. Structural characterization revealed that PMLH-1.5 consisted of rod-like La(OH) 3 and irregular γ-Fe 2 O 3 tightly bonded via PVA bridging. The composite demonstrated a maximum phosphate adsorption capacity of 79.51 mg P/g, reaching equilibrium within 16 h at 0.5 g/L dosage. The saturated adsorption remained stable across pH 3–9. While coexisting NO 3 − and humic acid showed negligible effects, Mg 2+ , Cl − , SO 4 2− and HCO 3 − reduced adsorption by 10–20 %, whereas Ca 2+ significantly enhanced phosphate uptake. Notably, PMLH-1.5 exhibited exceptional practical performance, exceeding its theoretical saturation capacity by 20 % with prolonged adsorption in real water matrices. Efficient desorption (4 h) was achieved using 2.5 M NaOH/1.875 M NaCl mixed solution. The PMLH-1.5 demonstrated remarkable stability across 40 consecutive adsorption-desorption cycles using actual water samples, consistently meeting discharge standards for 13–14 full cycles. This performance established a new reference point for cyclic durability assessments in water treatment research. Sequential desorption in the same desorbent progressively concentrated phosphorus from 0 to 26.69 mg/L, enabling effective low-concentration phosphate enrichment. Economic analysis confirmed that PMLH-1.5 exhibits a competitive chemical cost, ranging from 3.28 to 5.26 CNY/mol P (0.46 to 0.74 US $/mol P).
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CURRENT MOLECULAR MEDICINE
·
2023
·
IF 2.5
Kuang Xinmou,Su Minru,Li Hao,Sheng Xiaolan,Cai Huan,Xie Shuilin,Liu Zhonghua
Background: 3-Amino-4-(2,4,5-trifluorophenyl) butyric acid has potential
pharmacological effects in promoting insulin secretion. Menthol promotes drug
transdermal absorption and hypoglycemic effects.
Objective: The objective of the study was to combine the 3-amino-4-(2,4,5-
trifluorophenyl) butyric acid and menthol to develop a new candidate drug molecule
that can be used as a hypoglycemic drug in type II diabetes.
Methods: In this study, the molecular structure of 3-amino-4-(2,4,5-trifluorophenyl)
butyric acid in sitagliptin was modified by replacing pyrazine imidazole with menthol.
The structure of the target compound was characterized by nuclear magnetic
resonance (NMR). The anti-diabetic activity of BHF in N000180 BKS.Cg-Dock7m+/
+Leprdb/Nju mice with spontaneous diabetes was preliminarily studied.
Results: A potential multi-target drug molecule, 3-amino-4-(2,4,5-trifluorophenyl)
butyrate (BHF), was synthesized by combining 3-amino-4-(2,4,5-trifluorophenyl) butyric
acid and menthol. BHF is suitable for hyperglycemic mice and has a significant
hypoglycemic effect; the low dose of 10 mg/kg-1 started to be effective, and the high
dose of 40 mg/kg-1 was more effective than the positive drug metformin.
Conclusion: In this study, BHF has been synthesized and presented significant
antidiabetic activities.
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JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2022
·Vol. 103
·期 1
·205-213
·
IF 2.606
Zhao Qian,Yang Wensheng,Zhang Qin,Qiu Liren,Zhou Min,Lu Shengshang,Tao Benfu,Wang Xinhai,Xie Quan,Ruan Yunjun
Sodium super ion conductor (NASICON) structure materials, known for fast diffusion channels for Na + , are promising solid electrolyte materials for sodium-ion batteries (SIBs). However, the high carbon content in the NASICON electrolyte materials originated from the carbothermal reduction (CR) reaction will cause short-circuit and self-discharge of the batteries. Herein, we developed a facile and straightforward two-stage calcining strategy to prepare Na 3 V 2 (PO 4 ) 3 (NVP) with high purity and crystallinity. By precisely controlling the dosage of reducing agent and heat temperature, the purity of NVP can reach 99.97%. Moreover, the NVP film was prepared by the as-synthesized pure NVP powder via fast hot-pressing sinter, whose Vickers hardness is (5.0 ± 0.4) × 10 2 HV and relative density is 99.05%. This study provides a safe and facile strategy to prepare high-purity NVP powder and high-quality NVP films, which is of great significance in exploring NVP as a solid electrolyte for SIBs.
Graphical abstract
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RSC Advances
·
2015
·Vol. 5
·期 19
·14879-14886
·
IF 3.84
Jinrui Lin,Xiuyuan Ni
Two triarylamine-based polymers were synthesized by oxidative coupling reactions from 3-(N,N-diphenylamino) thiophene (3PAT) and 3-(10H-phenothiazin-10-yl) thiophene (3PTT) monomers, respectively. Distinguished from 3PAT, 3PTT has an additional sulfur atom between the two benzene rings. By using NMR spectroscopy and triarylamine control, the structures of the synthesized polymers were resolved with the aim of revealing the substitution effect. The results present that the substituent plays an important role in the chain propagation. Moreover, the triarylamine-based polymers were investigated for their solubility, thermal stability and electrochemical properties. To evaluate the electrochromism of the two different polymers, we have measured the spectroelectrochemical and electrochromic switching properties from the solution-cast films.
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CATALYSIS LETTERS
·
2014
·Vol. 145
·期 4
·1000-1007
·
IF 2.291
Huang Jie,Ding Shunmin,Xiao Weiming,Peng Yadan,Deng Shengjun,Zhang Ning
Abstract A solid base catalyst has been prepared by covalent functionalization of graphene oxide with 3-aminopropyl-triethoxysilane. The catalyst exhibits a superior catalytic performance in Knoevenagel condensation (over 90 % yield and at least seven times reusability), and is applicable to a wide range of substrates. Graphical Abstract
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ChemSusChem
·
2021
·Vol. 14
·期 16
·3382-3390
·
IF 8.928
Ting Feng,Jing Ding,Haiyan Li,Wei Wang,Bohua Dong,Lixin Cao
Graphical In hot water : CeO 2 /A−Fe(OH) 3 composites synthesized by a secondary water bath at 100 °C exhibit superior photocatalytic activity. A−Fe(OH) 3 increases specific surface area, passivates the surface of CeO 2 , and reduces the activation energy of water oxidation. This work provides a new insight into exploring amorphous cocatalysts to enhance photocatalytic O 2 evolution activity and augment the possibility of overall water splitting based on CeO 2 . Noble-metal-free composites with good photocatalytic property are of great interest. Here, CeO 2 nanorods composites loaded with amorphous Fe(OH) 3 cocatalyst were designed and prepared via a secondary water bath at 100 °C. The as-synthesized CeO 2 /amorphous Fe(OH) 3 composites exhibited superior light photocatalytic activities compared to pure CeO 2 , especially the sample with a loading time of 60 min. The photocatalytic oxygen generation rate could reach to 357.2 μmol h −1 g −1 , and the average apparent quantum yield (AQY) was 24.67 %, which was a 5.5-fold increase compared to the CeO 2 sample. The improvement of photocatalytic performance could be ascribed to three main reasons: First, loading the amorphous Fe(OH) 3 enlarged the specific surface area and passivated the surface of the pristine CeO 2 . Second, the amorphous Fe(OH) 3 ,which acted as a cocatalyst, provided many active sites, and reduced the reaction activation energy. Thirdly, the maximum interface with intimate contact between CeO 2 and amorphous Fe(OH) 3 cocatalyst accelerated the photogenerated charge separation efficiency and thus improved the photocatalytic performance of CeO 2 in photocatalytic water oxidation.
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PubMed
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CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Haoyue Ning,Lixin Lu,Jing Xu,Lijing Lu,Liao Pan,Zidong Lin
The purpose of this study was to compare the effects of different concentrations of the amine-functionalized isoreticular metal-organic framework-3 loaded with carvacrol (IRMOF-3/CA) on the properties of sodium alginate (SA) composite films, thus determining the optimal addition amount and further preparing bioactive packaging film with antibacterial and antioxidant activities. The morphology, structure, physical properties, antioxidant and antibacterial activities of the films were characterized and analyzed. The results showed that the thermal stability and light barrier property of the films were improved by the addition of IRMOF-3/CA. When the additional concentration was 0.4 wt%, the tensile, water vapor barrier and hydrophobic properties of the films were increased by 30.13%, 9.06% and 46.43% respectively compared with those of pure SA film. Moreover, the film added with IRMOF-3/CA had sustained antioxidant and antibacterial activities , and had an apparent fresh-keeping effect on pork, suggesting its application potential in food packaging.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Qian Yu,Xian Qiu,Jing Zhong,Chao Cao,Yuechan Liao,Zhiwei Zeng,Dawei Zhang,Chunyan Yan
Acorus tatarinowii , a famous traditional Chinese medicine, is used for the clinical treatment of memory impairment and dementia. In this research, AT50, the crude polysaccharide extracted from A. tatarinowii rhizome, significantly improved the memory and learning ability of mice with Alzheimer's disease (AD) and exerted excellent anti-neuroinflammatory effects. More importantly, AT50 returned the levels of NO, TNF- α , IL-1 β , PGE-2, and IL-6 in AD mouse brains to normal levels. To identify the active ingredients in AT50, a heteropolysaccharide ATP50–3 was obtained from AT50. Structural analysis indicated ATP50–3 consisted of α -L-Ara f -(1→, →2)- α -L-Ara f -(1→, →3)- α -L-Ara f -(1→, →5)- α -L-Ara f -(1→, α -D-Xyl p -(1→, →3,4)- β -D-Xyl p -(1→, →3)- α -D-Gal p -(1→, →3,6)- α -D-Gal p -(1→, →6)-4-OAc- α -D-Gal p -(1→, →3,4,6)- α -D-Gal p -(1→, →4)- α -D-Glc p -(1→, →2,3,6)- β -D-Glc p -(1→, →4,6)- α -D-Man p -(1→, →3,4)- α -L-Rha p -(1→, →4)- α -D-Gal p A-(1→, and →4)- α -D-Glc p A-(1 → residues and terminated with Xyl and Ara. Additionally, ATP50–3 significantly inhibited the release of proinflammatory factors in lipopolysaccharide-stimulated BV2 cells. ATP50–3 may be an active constituent of AT50, responsible for its anti-neuroinflammatory effects, with great potential to treat AD.
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APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY
·
2024
·
IF 3.1
Wang Yun,Chen Li-Mao,Liao Xiao-qing,Zhang Guo-huan,Zhang Jie
It was first found that porcine pancreatic lipase (PPL) could catalyze the Knoevenagel condensation of aromatic aldehydes and ethyl acetoacetate under solvent-free conditions in this paper. Under solvent-free conditions, the highest yield of PPL catalytic reaction was 99.38%, and the Z/E selectivity of the product was 3.93. In addition, the reaction conditions were optimized, and the factors affecting the product structure were studied.
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危险品化学品经营许可证（带存储）