ACS Omega
·
2026
·Vol. 11
·期 34
·50718-50731
·
IF 5.2
Wang Jianv,Xu Jixiang,Yang Xun,Xia Dengmei,Xiong Xia,Sun Ya,Lei Hui,Liu Li
Xanthostemon chrysanthus (F.Muell.)
Benth. is
a species from the Myrtaceae family with limited
phytochemical and pharmacological studies. In this study, ten compounds
( 1 – 10 ) were isolated and purified
from X. chrysanthus , among which compound 2 , identified as des-O-methyllasiodiplodin (DML), exhibited the most
potent anti-inflammatory activity. This is the first report of DML
being isolated from this species. DML significantly inhibited lipopolysaccharide
(LPS)-induced inflammation in RAW264.7 macrophages by reducing the
expression of TNF-α, IL-1β, and IL-6, as well as nitric
oxide (NO) and reactive oxygen species (ROS) production. Moreover,
DML promoted autophagy by increasing LC3 II/LC3 I conversion and decreasing
p62 expression, accompanied by suppression of the PI3K/AKT/mTOR signaling
pathway. The autophagy inhibitor chloroquine (CQ) reversed these effects,
confirming that DML exerts its anti-inflammatory action through autophagy
activation. In a mouse ear edema model, DML effectively reduced inflammation,
showing even greater efficacy than indomethacin. Collectively, this
study provides the first evidence that DML isolated from X. chrysanthus exerts strong anti-inflammatory effects by promoting
autophagy and modulation of the PI3K/AKT/mTOR pathway. These findings
enrich the chemical and pharmacological understanding of X. chrysanthus and highlight DML as a promising natural candidate
for the development of novel anti-inflammatory therapeutics.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Shiyu Sun,Bin Lu,Hongxun Hao,Jiangna Xing,Zijian Zhou,Xue Bai,Khadija Tabassum,Na Wang,Ting Wang,Xin Huang
Band engineering has garnered significant attention for its role in tailoring the band structures of g-C3N4, which is crucial for enhancing the light collection and conversion processes. In this paper, a novel visible-light-driven g-C3N4 was synthesized by a simple and efficient thermal polymerization method, and the morphology and bandgap were modulated by incorporating a high electronegativity oxygen element (O). Scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), X-ray powder diffraction (XRD), etc., were applied to analyze the morphology and chemical structure of the samples and the photogenerated charges separation performance was also investigated by ultraviolet–visible diffuse reflectance spectroscopy (UV–vis DRS), electrochemical impedance spectroscopy (EIS), etc. Besides, tetracycline (TC) photodegradation efficiency was tested, and the results show that the reaction rate constant and removal rate of MG0.002 are 0.0933 min–1 and 81.6% (within 60 min), and the recyclability and adaptability are excellent. Moreover, the mechanism of O regulatory was studied by element analyzer (EA) and X-ray photoelectron spectroscopy (XPS), and the results indicate that sp2-hybridized N atoms are preferentially replaced by O atoms in the MG0.02 structure. Finally, the TC degradation enhancement mechanism was investigated and the results indicated that the electrons were redistributed due to the influence of high electronegativity oxygen, which can not only generate midgap states and promote the visible light absorption, but also realize the effective transfer and separation of photogenerated carriers, thus significantly improving the photocatalytic activity.
研究领域:
材料科学
·
环境科学
·
化学工程
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Energy Technology
·
2021
·Vol. 9
·期 12
·2100743
·
IF 3.631
Xin Hou,Penggang Ren,Zhong Dai,Zhengzheng Guo,Zengping Zhang,Aiyue Sun,Wenwei He,Fang Ren,Yanling Jin
Herein, nitrogen, oxygen codoped porous carbon nanofibers (CNFs) from corn residue-derived lignin are fabricated via the electrospinning method, followed by introduction of graphenes (GNs) via a simple “brush-coating and drying” process. The obtained GN-coated carbon nanofibers (CNFs@GNs) exhibit a 3D network architecture, abundance of heteroatoms, excellent electrical conductivity, high specific surface area (700.92 m 2 g −1 ), thus boosting the electrochemical performances. The CNFs@GNs electrode delivers a higher specific capacitance of 271.1 F g −1 than CNFs (200.3 F g −1 ) at 1 A g −1 . Furthermore, the assembled CNFs@GNs symmetric supercapacitor exhibits an energy density of 20.3 Wh kg −1 at the power density of 199.97 W kg −1 together with a high charge/discharge reversibility of 97.3% and Coulombic efficiency of 99.81% after 10 000 cycles. This “brush-coating and drying” strategy utilized here provides a convenient and efficient route for designing CNFs and GN composites and can be utilized in other active materials.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
功能材料
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FLUID PHASE EQUILIBRIA
·
2019
·
IF 2.514
Kai Kang,Shanshan Zhu,Xiaodong Liang,Georgios M. Kontogeorgis,Xiaopo Wang
In this work, the liquid densities of n -decane/ o -xylene mixtures were measured at four different component proportions, the mole fractions of n -decane are 0.2001, 0.4065, 0.5835, and 0.8041, respectively. The measurements were performed based on the high-pressure vibrating-tube densimeter , and the measured temperatures were from 283.15 K to 363.15 K and the pressures were from 0.1 MPa to 60 MPa. The Tammann-Tait equation was used to correlate the experimental densities, and the simplified Perturbed Associating Fluid Theory (sPC-SAFT) and Cubic Plus Associating (CPA) equation were used to predict the high-pressure densities of the mixtures with the binary interaction parameters. Derived properties, including isothermal compressibilities and isobaric thermal expansivities, were calculated from Tait equation, sPC-SAFT equation, and CPA equation, respectively. In addition, excess molar volumes of the considered mixtures were obtained and the effects of pressure and temperature on the excess molar volume were discussed.
研究领域:
热力学
·
化学工程
·
流体相平衡
·
高压科学
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JOURNAL OF MOLECULAR STRUCTURE
·
2026
·
IF 4.7
Xutao Ding,Li Zeng,Peijian Ma,Rui Wang,Jinlong Yao,Zhichao Yu,Yu Xia,Xin Xiao
Nitrotoluene isomers are vital chemical intermediates, but their separation is challenging due to similar properties. This work introduces a supramolecular strategy using cucurbit[8]uril (Q[8]) to selectively isolate ortho-nitrotoluene (ONT). Through methods including single-crystal XRD, ITC, GC, and theoretical calculations, host–guest interactions in formic acid were characterized. Gradient solvent volatilization of Q[8] with isomer mixtures enabled controlled crystallization. Results show Q[8] strongly prefers ONT, with binding constants of 3.628×10⁶ M⁻¹ (ortho) vs. 8.712×10⁵ M⁻¹ (meta) and 2.173×10⁵ M⁻¹ (para), giving selectivity ratios of 4.16 and 13.37, respectively. Crystal structures reveal stabilization via π–π stacking and hydrogen-bonding networks. These interactions drive multidimensional assembly into ordered architectures through synergistic surface interactions, hydrogen bonding, and aromatic stacking. This work extends cucurbituril applications in adsorption and separation.
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Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2013
·
IF 0.807
Tingxi Li,Chengqian Yuan,Yuhua Zhao,Quanliang Chen,Meng Wei,Yanmin Wang
Poly(o-phenylenediamine) (PoPD) submicrospheres with an average diameter of about 400 nm have been successfully synthesized in glycine solution by simply mixing o-phenylenediamine (oPD) and ammonium persulfate at room temperature. The macromolecular structure, crystallinity and thermal stability of the as-prepared product were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Results showed that the doped PoPD is partly crystal and exhibits good thermal stability. The formation mechanism of the PoPD submicrospheres was investigated by monitoring the morphology development with the polymerization time, indicating that growth of the submicrospheres is a self-assembly process. This method is facile and applicable for the large scale fabrication of PoPD submicrospheres.
研究领域:
材料科学
·
高分子化学
·
纳米材料
·
有机合成
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Small
·
2024
·Vol. 20
·期 36
·2401497
·
IF 13
Shiqi Liu,Jie Wan,Boya Wang,Chenghan Li,Yulong Wang,Lin Wang,Haipeng Wu,Nian Zhang,Xu Zhang,Haijun Yu
Manganese-based lithium-rich layered oxides (Mn-LLOs) are promising candidate cathode materials for lithium-ion batteries, however, the severe voltage decay during cycling is the most concern for their practical applications. Herein, an Mn-based composite nanostructure constructed Li 2 MnO 3 (LMO@Li 2 MnO 3 ) is developed via an ultrathin amorphous functional oxide Li x MnO y coating at the grain surface. Due to the thin and universal LMO amorphous surface layer etched from the lithiation process by the high-concentration alkaline solution, the structural and interfacial stability of Li 2 MnO 3 are enhanced apparently, showing the significantly improved voltage maintenance, cycle stability, and energy density. In particular, the LMO@Li 2 MnO 3 cathode exhibits zero voltage decay over 200 cycles. Combining with ex situ spectroscopic and microscopic techniques, the Mn 2+/4+ coexisted behavior of the amorphous LMO is revealed, which enables the stable electrochemistry of Li 2 MnO 3 . This work provides new possible routes for suppressing the voltage decay of Mn-LLOs by modifying with the composite functional unit construction.
研究领域:
材料科学
·
电化学
·
储能
·
锂离子电池
·
纳米材料
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Zhen Sun,Chenming Zhou,Teng Wang,Zhixin Gao,Jin Sun,Renquan Hu,Meng Yan,Zhaolin Na,Ran Su,Yong Yang
Photocatalytic CO2 reduction offers a green strategy to alleviate climate change and address the energy crisis. In this work, indium oxysulfide subnanocoils with a thickness of 0.9 nm were successfully synthesized via a facile solvothermal method. Adjusting the sulfur content not only modulates the band structure and energy level positions but also enables precise control over the morphology of the as-prepared products. The optimized indium oxysulfide subnanocoils exhibit excellent photocatalytic activity for CO2 reduction, with a CO evolution rate of 61.731 μmol h–1 g–1, which ranks among the best performances for indium-based materials reported to date. The enhancement of photocatalytic performance can be attributed to the exceptionally high surface atomic exposure ratio of the unique subnanometer coiled structure. Meanwhile, the sulfur substitution-induced S–O coordination significantly reduces the average valence state of indium, narrows the band gap, and improves the reduction capability of photogenerated electrons. This study provides a feasible approach for the development of high-performance subnanoscale photocatalysts for CO2 reduction.
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PubMed
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2026
·
IF 3.3
Zhiyou Li,Ling Yang,Jiahua Zhou,Long Liu,Jie Tang,Tianzeng Huang,Chunya Li,Tieqiao Chen
Selective O-acylation of ketones with carboxylic acids was disclosed, which produced a wide range of enol esters in good to high yields with Z-configured regioselectivity. This reaction showed high functional group tolerance and could be performed on a gram scale without any decrease of synthetic efficiency. When o-bromobenzoic acids were used, the corresponding enol esters could be easily derivatized into the value-added chromones via Claisen condensation tandem cyclization.
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高影响因子
Small Methods
·
2022
·Vol. 6
·期 7
·2200449
·
IF 15.367
Junhua Zhou,Zhujie Chen,Guo Yu,Keni Ma,Xueyu Lian,Shuo Li,Qitao Shi,Jiaqi Wang,Lingli Guo,Yu Liu,Alicja Bachmatiuk,Jingyu Sun,Ruizhi Yang,Jin-Ho Choi,Mark H. Rümmeli
Lithium-rich cathodes (LRCs) show great potential to improve the energy density of commercial lithium-ion batteries owing to their cationic and anionic redox characteristics. Herein, a complete conductive network using carbon nanotubes (CNTs) additives to improve the poor kinetics of LRCs is fabricated. Ex situ X-ray photoelectron spectroscopy first demonstrates that the slope at a low potential and the following long platform can be assigned to the transition metal and oxygen redox, respectively. The combination of galvanostatic intermittent titration technique and electrochemical impedance spectroscopy further reveal that a battery with CNTs exhibited accelerated kinetics, especially for the O-redox process. Consequently, LRCs with CNTs exhibit a much better rate and cycling performance (≈89% capacity retention at 2 C for over 200 cycles) than the Super P case. Eventually, TEM results imply that the improved electrochemical performance of the CNTs case also benefits from its more stable bulk and surface structures. Such a facile conductive additive modification strategy also provides a universal approach for the enhancement of the electron diffusion properties of other electrode materials.
研究领域:
材料科学
·
能源存储与转换
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高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Jingfang Zhang,Jiangping Ran,Weishang Jia,Xinxiu Yan,Lanxiang Feng,Wei Zou,Yaoyue Yang,Liping Wang
Lithium metal batteries (LMBs) are recognized as one of the most promising next-generation energy storage systems due to their exceptionally high energy density and relatively low cost. However, the inevitable growth of lithium dendrites remains a critical challenge. Electrolyte additives have emerged as a straightforward and effective strategy for anode modification. Among these, nitrate salts (particularly LiNO 3 ) have been widely employed to suppress the polysulfide “shuttle effect” in lithium‑sulfur (Li S) batteries while enhancing Coulombic efficiency (CE). Nevertheless, the underlying reaction mechanisms remain insufficiently understood. To guide the rational design of high-performance electrolyte additives, this study systematically investigates the synergistic effects of different cationic nitrate additives (K + , Na + ) and N O bond anions (NO 3 − , NO 2 − ) on Li deposition behavior. The results demonstrate that NO 3 − can effectively participate in the Li + solvation process, facilitating the formation of an inorganic-rich, high-quality solid electrolyte interphase (SEI). In contrast, although NO 2 − exhibits stronger adsorption energy with both Li + and the Li (110) surface, which enables more uniform lithium deposition, it fails to construct a stable SEI structure. Furthermore, cations demonstrate distinct synergistic interactions with N O anions during electrochemical processes, significantly influencing Li + deposition kinetics. This work provides fundamental insights into the mechanistic roles of K + /Na + -based nitrate and nitrite additives in LMBs. Additionally, a novel characterization approach utilizing conventional transmission electron microscopy (TEM) is proposed to evaluate SEI quality, providing a practical tool for interfacial analysis. These findings present valuable guidelines for designing advanced electrolyte additives and controlling Li deposition behavior in high-energy-density battery systems.
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MATERIALS LETTERS
·
2025
·
IF 2.7
Ying Chen,Chang Liu,Mengxue Hu,Qingfang Li,Jing Su
In this work, KCuCl₃ and K₂CuCl₄·2H₂O crystals were synthesized via a solution evaporation method. Their crystal structures were verified by XRD, while the (110) interplanar spacing of K₂CuCl₄·2H₂O was further identified by HRTEM and the corresponding SAED. Thermal behavior was examined using TG/DSC. Both compounds exhibit reversible discoloration in response to temperature (20–100 °C) and humidity (0–80 % RH). UV–Vis absorption reveals band gaps of 3.05 eV for KCuCl₃ and 3.09 eV for K₂CuCl₄·2H₂O. PL spectra show blue-green emission, with CIE coordinates indicating a warmer hue for K₂CuCl₄·2H₂O, primarily attributed to the Cu 2+ centers. The strong light absorption and efficient PL response of these halides highlight their potential for humidity sensing and luminescent device applications.
研究领域:
材料科学
·
无机化学
·
光学材料
·
晶体学
·
传感器技术
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危险品化学品经营许可证（带存储）