JOURNAL OF THE INDIAN CHEMICAL SOCIETY
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2025
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IF 3.4
Xiaoyan Gao,Nisar Ali,Meng Zhao,Guang Hu,Adnan Khan,Dandan Min,Lijing Zhang,Lingli Ni,Mohammed Albahri
Nacre-like polymer nanocomposites have become fascinating material nowadays because of their exceptional mechanical property. In this study, nacre-like waterborne polyurethane/hexagonal boron nitride (WPU/h-BN) nanocomposite with high-thermal, mechanical and water resistance has been successfully prepared via mechanical blending method. Owing to strong interfacial interactions and a nacre-like structure, the WPU/h-BN nanocomposite with a loading amount of 30 wt% exhibits excellent tensile strength of 27.3 MPa, compared with 4.16 MPa for pure WPU. Additionally, it has an exceptional maximum decomposition temperature of 443 °C and an outstanding water absorption ratio of 8.1 %. This approach of adopting h-BN and WPU to construct nacre-like structure may provide a new path for preparing high performance WPU strategies.
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高影响因子
TETRAHEDRON
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2020
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IF 2.233
Xianxia Tu,Haiyun Peng,Guisheng Deng
In Ph 3 PAuCl/AgOTf/TsOH system, 2-diazo-5-alkynyl-1,7-diketo carbonyl compounds were transformed into diazo furans . Rh 2 (OAc) 4 -mediated conversion of the diazo furan derivatives into 4 H -cyclopenta[ c ]furan-5(6 H )-one derivatives was accomplished via C(sp 2 )−H insertion reaction at 4-position on the furan ring.
研究领域:
有机化学
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合成化学
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高影响因子
Nanomaterials
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2022
·Vol. 12
·期 11
·1860
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IF 5.719
Dan Li,Mengyuan Li,Shiping Zhu,Yanmei Gao,Mengyao Mu,Ning Zhang,Youmei Wang,Minghua Lu
Sample pretreatment plays important role in the analysis and detection of trace pollutants in complex matrices, such as environmental and biological samples. The adsorption materials of sample pretreatment receive considerable attention, which has a significant effect on the sensitivity and selectivity of the analytical method. In this work, the porous hexagonal boron nitride (h-BN) was utilized as a coating material of solid-phase microextraction (SPME) to extract and preconcentrate polycyclic aromatic hydrocarbons (PAHs) prior to separation and detection with GC-FID. Attributed to the multiple interactions including hydrophobicity, hydrogen bonding and strong π–π interaction, the h-BN coating showed excellent extraction performance for PAHs. Under the optimal conditions, the method showed the linear relationship in the range of 0.1–50 ng mL−1for acenaphthene, 0.05–50 ng mL−1for pyrene, and 0.02–50 ng mL−1for fluorene, phenanthrene and anthracene with a correlation coefficient (R2) not lower than 0.9910. The enrichment factors were achieved between 1526 and 4398 for PAHs with h-BN as SPME fiber coating. The detection limits were obtained in the range of 0.004–0.033 ng mL−1, which corresponds to 0.08–0.66 ng g−1for soil. The method was successfully applied to analysis of real soil samples. The recoveries were determined between 78.0 and 120.0% for two soil samples. The results showed that h-BN material provided a promising alternative in sample pretreatment and analysis.Keywords:sample pretreatment;solid-phase microextraction (SPME);hexagonal boron nitride (h-BN);nanomaterials;polycyclic aromatic hydrocarbons (PAHs);soil
研究领域:
分析化学
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环境科学
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PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
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2019
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IF 4.153
Yu Liu,Shijie Xu,Xu Zhang,Weiwei Tang,Junbo Gong
There has been growing interest in investigating the role of solvents played in nucleation pathways; nevertheless, the nucleation mechanism is still poorly understood. In this work, flufenamic acid (FFA) was selected as model compound to investigate the relationship between solvent and nucleation kinetics. Over 1000 induction time experiments were conducted. Solution IR spectroscopy and molecular dynamic simulations were used to explore the solvent–solute interaction and conformation distribution in solutions. Given the same driving force, the order of nucleation rate of FFA was found following acetonitrile > methanol > toluene, in which dimers are significantly distributed in toluene solutions. The observation cannot support the previously proposed hypothesis that the breakage of solvent–solute hydrogen bonds and dimerization determine the nucleation rate. Through crystal growth experiment and detailed discussions, we have reached an interesting conclusion that the weak C–H···π interactions play a vital role in the nucleation pathway via probably regulating the growth of the nucleating clusters.
研究领域:
物理化学
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晶体学
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分子动力学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Yongfeng Zhi,Si Ma,Hong Xia,Yumin Zhang,Zhan Shi,Ying Mu,Xiaoming Liu
Metal-free, visible-light driven, solid organic photocatalysts provide a more green and environmentally friendly alternative to traditional metal-based photocatalysts. Donor-Acceepor (D-A) dyads possess a feature of easy to adjust the photoelectric properties, and enhance their photocatalytic performances. Here we report a fascinating strategy for screening excellent organic porous photocatalysts through oxidative coupling of single D -A based monomer, which has still an important advantage to ensure uniformity of polymer structure except for the inherent characteristics of D -A polymers. According to this strategy, three D -A typed conjugated microporous polymer (DA-CMP) photocatalysts consisting of alternating electron-rich (carbazole) and electron-deficient (benzene, 4,7-diphenyl-2,1,3-benzothiadiazole or anthraquinone) units have been synthesized, and their porosity and photoelectric properties including adsorption, emission, lifetime, optical bandgaps, energy levels and transient photocurrent response as well as photocatalytic activity, were conveniently tuned by selecting different D -A monomers with tunable electron-deficient moiety. These DA-CMPs were exploited as metal-free photocatalysts in the oxidative C-H functionalization reactions in the presence of visible-light and molecular oxygen. They showed excellent photocatalytic activity, extensive substrate adaptability and outstanding reusability, due to combining some key features like permanent porosity, outstanding stability and optoelectronic properties. In addition, the reaction mechanism for DA-CMP photocatalyzed C-H functionalization reactions under visible-light irradiation was investigated in detail. Moreover, to prove in depth the benefits of the heterogeneous photocatalysis, a continuous flow procedure has been conducted with an excellent yield.
研究领域:
材料科学
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有机化学
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高影响因子
JOURNAL OF CATALYSIS
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2025
·
IF 6.5
Ajibola T. Ogunbiyi,Wenzhi Li,Amir Hamza,Chenchen Gui,Liqun Wang
Despite significant advances in lignin depolymerization studies, the specific combination of Mo and W in bimetallic catalysts and their impact on hydrogen activation and Lewis acidity in lignin conversion remains poorly understood, particularly in terms of the synergistic effects that enhance efficiency and selectivity. A bimetallic Mo x W y /H-Beta catalyst was synthesized via incipient wetness impregnation with the catalyst characterized using XPS, H 2 -TPR, NH 3 -TPD, and other methods. The catalyst demonstrated high activity for selective kraft lignin depolymerization due to the synergy between Lewis acid sites, hydrogen activation sites, and the Mo-W interaction on the support. The proximity of metal and acid sites facilitated effective diffusion of intermediates, leading to enhanced synergy and the eventual cleavage of etheric C–O bonds. A Liquid fuel (LF) yield of 84.3 % and 71.6 % kraft lignin conversion at 300 °C without external hydrogen. The higher heating value (HHV) increased from 25.45 MJ/kg in the original kraft lignin feed to 35.9 MJ/kg in the LF. XPS analysis showed a predominant amount of Mo 6+ on the fresh catalyst surface, with complete conversion to lower oxidation states during the reaction. This study provides insights into the structure–activity relationships of Mo-based bimetallic catalysts, highlighting the importance of hydrogen activation sites and acidic sites in kraft lignin depolymerization.
研究领域:
催化化学
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可再生能源
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生物质转化
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可持续化学
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材料科学
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高影响因子
Materials Today Communications
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2025
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IF 4.5
Chengzhen Fu,Hailu Wang,Hongxing Zhan,Yuanbing Li,Shujing Li,Bo Yin
Reducing the Ca/Si molar ratio is critical for optimizing calcium silicate hydrate (C–S–H) materials and enabling the recycling of silicon-rich waste. However, achieving high-performance crystalline C–S–H at Ca/Si < 0.83 remains challenging. This study proposes and systematically investigates a dual-silicon-source strategy, employing both active and inert silicon sources to regulate hydrothermal synthesis. At Ca/Si = 0.6, experimental results demonstrate that increasing the active silicon source content from 0 % to 60 % enhances tobermorite crystallinity by 275 %, decreases thermal conductivity by 26 %, and improves compressive strength by 7.30 MPa. The optimal performance was obtained at a reactive silicon-to-calcium molar ratio of 1.0. These findings confirm that this strategy significantly enhances C–S–H crystallinity and material performance. Mechanistically, the higher reactivity of the active silicon source drives competitive calcium consumption, facilitating the formation of long-chain crystalline C–S–H. This approach demonstrates a scalable pathway for synthesizing high-performance C–S–H under low Ca/Si conditions, offering promising applications in optimizing C–S–H-based materials and the recycling of silicon-rich waste.
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高影响因子
CARBON
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2025
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IF 11.6
Junzhu Yang,Junchen Liu,Yi Zhang,Wei Pei,Qi Xia,Sanyang Han,Yuan Lu
Efficient regeneration of the coenzymes NADH and NADPH is crucial for sustaining biocatalytic processes, particularly in driving the biocatalysis reaction. In this study, the photocatalytic properties of alkali-doped graphitic carbon nitrates were explored to achieve efficient NAD(P)H regeneration. g-C 3 N 4 doped with potassium (KOH), sodium (NaOH), and calcium (Ca(OH) 2 ) was synthesized and characterized, showing significant enhancements in light absorption, charge separation, and photogenerated electron transport. Among the synthesized photocatalysts, KOH-doped g-C 3 N 4 (KCN) exhibited the best photocatalytic performance, regenerating 95 % NADH and 92 % NADPH within 30 min. This result compares favorably with those reported in previous studies. Based on this superior performance, K-0.2 was further applied to the in vitro CO 2 reduction to formate as a proof of concept. To clarify the mechanistic insights of the improved photocatalytic performance of KCN, the chemical model of g-C 3 N 4 and KCN was established, and DFT calculations were performed to reveal the electronic structure modifications responsible for the enhanced photocatalytic activity. Furthermore, to expand the light utilization capability of the system, upconversion nanoparticles (UCNPs) were incorporated into the system to utilize near-infrared light (980 nm), which successfully achieved NADH regeneration under near-infrared excitation and extended the light absorption range of the photocatalytic system. Overall, this study demonstrated that alkali-doped g-C 3 N 4 offered a highly efficient platform for NAD(P)H regeneration, and the integration of UCNPs further enriched the coenzyme regeneration scenario, suggesting a promising strategy for advancing sustainable coenzyme regeneration technologies.
研究领域:
生物催化
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光化学
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分子生物学
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可持续能源
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酶工程
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Jing Wang,Jia-Wei Fang,Zhi-Yong Ji,Zhi-Yuan Guo,Xin-Wei Li,Jie Liu,Ying-Ying Zhao,Zhong Liu,Feng-Feng Gao,Yuan Zhong,Jun-Sheng Yuan
Lithium extraction from the solution in low Li + concentration by an energy-saving and high-efficiency method is still a challenge. Herein, a novel hollow porous LiMn 2 O 4 (H-LMO) with highly active site was proposed to enhance the extraction performance of Li + . Based on the established hollow porous structure, the H-LMO film electrode (H-LMOE) exhibits excellent lithium electrosorption performance and stability. Under the current density of 0.5 C, the electrosorption capacity of Li + could reach 31.52 mg/g, the separation coefficient of Li + /Mg 2+ was 581.67, and the energy consumption was as low as 0.49 Wh/mol Li. This unique structural strengthening mechanism made H-LMOE maintain a good Li + extraction performance even in a solution of low Li + concentration. The Li + electrosorption capacity of H-LMOE was 2.13 times that of T-LMOE in a 60 mg/L Li + solution, while the specific energy consumption of the H-LMOE was 15.78% lower than that of the traditional-LiMn 2 O 4 film electrode (T-LMOE). Even in a 10 mg/L Li + solution, the electrosorption capacity of H-LMOE was 21.48 mg/g, which was 10.0% higher than that of T-LMOE. Moreover, after 50 recycling processes, the final electrosorption capacity of the H-LMOE was about 25.0% higher than that of the T-LMOE.
研究领域:
材料科学
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电化学
·
能源存储
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高影响因子
INORGANIC CHEMISTRY
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2021
·
IF 5.165
Xueyu Wang,Songdong Ding,Zhipeng Wang,Lianjun Song,Xiuying Yang,Qian Xiao,Haowei Xu,Junli Wang,Zhen Shen,Hui Wang
Effective and selective separation of technetium from acidic nuclear liquid waste is highly desirable for partitioning and transmutation but is of significant challenge. Highly efficient extraction of pertechnetate can be achieved by taking H-bonding and electrostatic interaction combined strategy. Base on this strategy, an amine–amide ligand NTAamide(n-Oct) was employed to extract TcO4– in HNO3 solution. Using n-dodecane as a diluent, NTAamide(n-Oct) demonstrated excellent extractability and good selectivity toward TcO4– with a rapid extraction equilibrium that could be reached in less than 1 min. Its maximal loading capacity for TcO4– was almost 100 times as much as that of traditional amine extractant Aliquat-336 nitrate. Meanwhile, TcO4– could be efficiently stripped from the loaded organic phase by (NH4)2CO3 solution. Slope analysis indicated the formation of a 1:1 complex of NTAamide(n-Oct) with TcO4–. The extraction conformed to the anion exchange extraction model, as confirmed by analyses of single-crystal X-ray diffraction, 1H NMR titration, FTIR, and ESI-MS.
研究领域:
核化学
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放射性废物处理
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配位化学
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DOI
PubMed
高影响因子
BIOORGANIC CHEMISTRY
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2026
·
IF 5.1
Xue Zhang,Peng Hou,Qi Zhang,Haijun Wang,Hongxia Cui,Likun Liu,Pengfei Qi,Haoqing Ren,Huiling Hou,Song Chen
Hydrogen sulfide (H 2 S) is a gas with dual roles in both environmental and biological systems. Although it is a natural atmospheric constituent and an enzymatically produced signaling molecule, elevated levels of H 2 S are associated with air pollution, cytotoxicity, and various diseases. Current methods for detecting H₂S are often limited by complex sample preparation, low sensitivity, and inadequate selectivity. To address these challenges, we report the development of a novel dual-channel and dual-responsive fluorescent probe HAR-H₂S , which enables rapid, sensitive, and selective detection of H₂S in both environmental and biological contexts. This probe employs coumarin and naphthalimide derivatives as fluorescent reporters and incorporates dual recognition sites for specific H₂S detection. Upon interaction with H₂S, the probe generates distinct blue and green fluorescent signals, facilitating bicolor imaging. The probe demonstrated excellent selectivity, low detection limits (26.4 nM and 35.1 nM), a relatively large spectral separation (126 nm) and rapid response times (within 3 min). HAR-H 2 S was successfully applied to quantify H 2 S in water samples (tap, river, and lake water) and to image H 2 S in various biological systems, including HeLa cells, HepG2 cells, zebrafish embryos, the ferroptosis model and mouse liver tissue sections. Our results highlight the potential of HAR-H 2 S as a versatile tool for H 2 S detection and imaging in both analytical and biological applications, thereby advancing the field of H 2 S research.
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PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
·
2026
·
IF 4.7
Tianxiao Hu,Jiayu Qi,Yinuo Xu,Jia He,Qingying Tan,Jie Hao,Jing Wang,Jiewei Hong,Jianwei Wang,Lin Chen,Xiaobing Dou
This study aims to investigate the molecular mechanisms by which 4-hydroxynonenal (4-HNE) regulates hydrogen sulfide (H₂S)-producing enzymes, mediating the pathogenesis of metabolic dysfunction-associated fatty liver disease (MAFLD) during pregnancy, thereby offering novel molecular targets for early diagnosis and intervention of related disorders. By establishing a MAFLD pregnant mouse model, we comprehensively examined the regulatory effects of 4-HNE on placental function and its interaction with the H₂S system. We found that MAFLD pregnant mice exhibited significant glucose metabolic disorders, hepatic steatosis, and placental damage. Mechanistically, 4-HNE disrupts H₂S biosynthesis, thereby impairing its inhibitory effect on the inflammasome pathway while simultaneously activating inflammatory cascades. This synergistic action exacerbates placental pathological damage, manifesting as abnormal vascular function and impaired materno-fetal exchange. Notably, exogenous H₂S intervention partially reversed 4-HNE-induced toxicity, suggesting the therapeutic potential of targeting this pathway. These findings demonstrate the pivotal role of the “4-HNE–H₂S–NLRP3” regulatory axis in MAFLD-associated placental injury, providing novel mechanistic insights and potential therapeutic targets for pregnancy complications.
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高影响因子
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