mSystems
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2024
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IF 5
Jiaming Zhang,Xiaoxia Yu,Weidong Li,Yunjing Jiang,Liangran Zhang,Shunxin Wang
A good quality egg is essential for a successful pregnancy and early embryo development. Oocyte development is vulnerable to environmental exposures. Bisphenol S (BPS) is widely used as a replacement for its analog bisphenol A, but the reproductive toxicity of BPS has been of great concern. In this study, we showed that BPS exposure induces dysbiosis of the gut microbiota, which further leads to intestinal permeability and inflammation, and ultimately impairs oocyte quality. More importantly, we found that alginate oligosaccharide reshapes the gut microbiota to improve gut homeostasis, thereby preventing the deleterious effects of BPS on the gut and oocytes. Overall, this study not only demonstrates that BPS exposure impairs the intestine and oocytes by inducing dysbiosis of the gut microbiota but also develops a preventive strategy.
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JOURNAL OF ORGANIC CHEMISTRY
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2020
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IF 4.335
Nian Zheng,Ce Liu,Ya-Nan Ding,Wei-Yu Shi,Bo-Sheng Zhang,Yong-Min Liang
Copper-catalyzed three-component redox-neutral ring opening of benzothiazoles with aryl iodides and O-benzoyl hydroxylamines for the synthesis of 1-amino-N-(2-(phenylthio)phenyl)methanimine has been developed. This one-pot reaction undergoes C–S and N–O bond cleavage and new C–S and C–N bond construction. Several control experiments excluded a free radical procedure and also demonstrated the secondary amine as a possible intermediate, which was vital to the catalytic reaction. Meanwhile, the deuteration experiment got rid of the C–H activation dehydroisomerization of the benzothiazole mechanism.
研究领域:
有机化学
·
合成化学
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xinpeng Gao,Yuxian Liu,Ying Han,Jing Zhang,Jiwen Guan,Fengping Xiao,Peng Hu,Jiao Gao,Yubao Chen
Room-temperature sodium–sulfur (RT Na-S) batteries are promising candidates for large-scale grid energy storage applications due to the abundant availability of sodium resources and their low acquisition cost. However, the shuttling effect of long-chain sodium polysulfides severely degrades the cycle stability of RT Na-S batteries. In this study, a biomass-derived (corn-straw) porous carbon material with self-doped nitrogen and oxygen atoms was fabricated as a sulfur host (denoted as NOC). Sulfur was subsequently loaded covalently via the vapor-infiltration method to form the cathode material for RT Na-S batteries. Owing to the high cellulose content in corn-straw, the derived NOC composite exhibits excellent electrical conductivity and large pores, which facilitate Na + transport and accommodate the volume expansion of active sulfur during cycling. More importantly, theoretical calculation reveals that compared to pure carbon matrices, the N and O dopants make carbon become unsaturated, increasing the electron density distribution and enhancing bonding ability to form C S bonds. When used as a cathode, in-situ Raman and ex-situ XRD measurements confirm that covalently bonded sulfur inhibits the shuttle effect by directly forming Na 2 S during the reduction reaction. Consequently, the NOC/S cathode delivers superior electrochemical performances with excellent cycle stability. This study introduces an innovative approach to developing advanced RT Na-S batteries by utilizing cost-effective carbon materials derived from biomass.
研究领域:
材料科学
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能源存储技术
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高影响因子
SYNTHETIC METALS
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2015
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IF 2.252
Hua Ye,Baofeng Zhao,Dongyun Li,Dongcheng Chen,Gaozhan Xie,Shi-Jian Su,Wei Yang,Yong Cao
A series of blue-light-emitting conjugated polymers based on electron-donating trifluoren-2-ylamine and electron-deficient dibenzothiophene- S,S -dioxide were synthesized via typical Suzuki coupling reactions. Their thermal, photophysical and electrochemical properties were fully studied. Owing to the excellent thermal stability, film-forming ability as well as the favorable energy levels of the polymers, highly efficient non-doped single-layer blue devices by using these polymers as an emitting layer (EML) were achieved. Among them, the device based on PSFOFN1 showed the highest maximum current efficiency (CE max ) of 1.99 cd/A. Moreover, the device presented small efficiency roll-off with current efficiency (CE) of 1.97 cd/A at high brightness up to 100 cd/m 2 . In addition, the Commission Internationale de L’Eclairage (CIE) coordinates of all the devices are very close to the deep blue region. Our findings suggest the potential applications of the polymers in full-color flat-panel displays and organic lighting.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
DYES AND PIGMENTS
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2024
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IF 4.1
Xiang Long,Hongxiang Liu,Jing Hu,Shaogui Wu
Herein, we report a facile one-step solvothermal synthesis of nitrogen and sulfur co-doped fluorescent carbon dots (N,S-CDs) using benzoic acid as the carbon source and sulfonamide as the doping agent. The synthesized N,S-CDs exhibit stable photoluminescence with an impressive fluorescence quantum yield of 16.8 %. These N,S-CDs maintain their luminescent properties under various challenging conditions, including high salt concentrations, elevated temperatures, UV radiation exposure, acidic or alkaline environments, long-term storage, and different solvents. Notably, the photoluminescence of N,S-CDs is excitation-wavelength dependent, with emission wavelengths tunable from 470 nm to 585 nm. Furthermore, the N,S-CDs display distinct fluorescent hues in aqueous and ethanolic media, presenting a novel dual-switch anti-counterfeiting ink system. Leveraging the sensitivity of N,S-CDs to gentamicin, we have developed a facile and rapid detection method for this antibiotic, which has been successfully applied to the analysis of authentic milk samples. This research contributes a novel and efficient protocol for the fabrication of high-performance carbon dots, thereby expanding their potential applications in food analysis and anti-counterfeiting technologies.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Yating Ai,Jiajie Hu,Xianqiang Xiong,Sónia A.C. Carabineiro,Yuesheng Li,Nikolay Sirotkin,Alexander Agafonov,Kangle Lv
Efficient interfacial charge transfer and robust interface interactions are crucial to achieve superior spatial separation of carriers and develop advanced heterogeneous photocatalysts . This study describes the synthesis of a novel S-scheme heterojunction of ZnO/In 2 S 3 , with S−O covalent bonds , achieved through a hydrothermal method . The optimized heterojunction shows exceptional photocatalytic activity , achieving a H 2 generation rate of 2488 μmol g −1 h −1 and a degradation efficiency of 86 % for tetracycline hydrochloride (TCH) within 2 h. These values surpass those of In 2 S 3 alone by 35 and 1.4 times, respectively. Various techniques, including electron spin resonance, X-ray photoelectron spectroscopy, Kelvin probe force microscopy and density functional theory calculations confirm the S-scheme heterojunction. The establishment of a chemical S−O bond between In 2 S 3 and ZnO facilitates an atomic level interfacial pathway, enabling efficient transportation of interfacial electrons.
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高影响因子
APPLIED CATALYSIS A-GENERAL
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2015
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IF 3.942
Li Yue,Guangci Li,Feng Zhang,Lei Chen,Xuebing Li,Xiang Huang
A series of CoMoO 4 hydrates composed of nanorods have been synthesized with different alcohol–water solvent systems, and the corresponding Co–Mo sulfides are obtained after sequential calcination and sulfurization. The characterization results show the change in solvent system can efficiently adjust the particle size of the Co–Mo precursors, while cannot affect their components and morphologies. Because of the different particle size, the specific surface areas (SSA) of the final Co–Mo sulfides are different. The particles with small size can lead to a high SSA that benefits the exposure and dispersion of active components, and further promote the incorporation of MoS 2 slabs with Co atoms to form “Co–Mo–S” structures on the surface of the sulfides. More “Co–Mo–S” structures would create more coordinative unsaturated sites with high activity in situ during hydrodesulfurization (HDS) reaction, resulting in a higher HDS activity. Among the Co–Mo sulfides, since S-m/w derived from methanol–water system possesses the smallest particle size and the most active sites, it naturally exhibits the highest HDS activity toward dibenzothiophene.
研究领域:
催化化学
·
材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jiahang Song,Chuanhui Shi,Yijian Zhou,Shengqian Liang,Enzhou Liu,Chen Wang,Bing Wang,Bo Zhou,Chaoyang Wei,Zhuo Li
Constructing S -scheme heterojunctions serves as a potent approach to boost photocatalytic efficiency by promoting charge transfer and attaining elevated redox potentials. Herein, a novel axially substituted subphthalocyanine derivative, H 12 SubPc-Oph-tBu (SubPc-tBu), was synthesized and assembled onto cobalt-doped ZnS (Co-ZnS) via supramolecular self-assembly to form a unique S -scheme heterojunction (SubPc-tBu/Co-ZnS). In this system, the electron-rich SubPc-tBu unit, in conjunction with the incorporated cobalt (Co), is pivotal in promoting charge transfer and enhancing the photocatalytic efficiency of the heterojunction. The photocatalyst achieved a 97 % degradation efficiency of furantoin (FT) within 30 minutes, with an apparent rate constant that is 17.24 times higher than ZnS and 10.35 times greater than SubPc-tBu, demonstrating its superior photocatalytic performance. Furthermore, after five consecutive cycles, it retained a degradation efficiency of 83.36 %, highlighting its excellent stability and recyclability. Experimental and theoretical studies revealed that the enhanced photocatalytic activity arises from an interfacial charge transfer mechanism improving carrier separation and transfer. Time-dependent density functional theory (TDDFT) and LC-MS coupled with DFT elucidated electron transfer pathways and pollutant degradation mechanisms, offering insights into photocatalyst design for environmental pollution solutions.
研究领域:
材料科学
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环境科学
·
光化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Liting Zhang,Xiaoxin Yan,Ting Jiang,Jie Han,Jianqiang Xiao,Kai Wang,Donglin Hao,Rui Guo,Jianhua Jin
This study introduces Hcy-GST, a new dual-modal optical probe for detecting glutathione S-transferase (GST) activity. The probe combines hemicyanine and rhodamine derivatives, which use fluorescence and photoacoustic (PA) signals, controlled by a photoinduced electron transfer (PET) mechanism. In its original form, the nitro groups in Hcy-GST quench fluorescence, producing weak fluorescence and strong PA signals. When GST replaces the nitro groups with glutathione (GSH), the PET effect is interrupted, leading to fluorescence recovery and reduced PA signals. Hcy-GST shows high sensitivity, with fluorescence and PA signals strongly correlating with GST concentration. It has high selectivity and minimal interference from other substances. In cellular tests, Hcy-GST detected GST inhibition by ethacrynic acid. In vivo studies revealed lower GST activity in obese models, with PA signals increasing after probe injection. Hcy-GST demonstrated excellent stability and low toxicity, showing promise for GST detection in research and diagnostics.
研究领域:
生物化学
·
医学诊断
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DOI
高影响因子
Materials Advances
·
2025
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IF 4.7
Zeyu Yang,Jizhou Yang,Haibo Fan
The photocatalytic degradation of Rhodamine B (RhB) from a one-step hydrothermal prepared ZnGa2O4/Ga2O3 with a double shell hollow sphere structure has been investigated. It is found that this structure can greatly improve the photocatalytic performance through the formation of S-scheme heterojunction in the interface between ZnGa2O4 and Ga2O3. By optimizing the feed ratio, the maximum degradation rate of RhB is 0.1133 min−1, which is nearly 2 times higher than Ga2O3 monomer photocatalyst, 5 times higher than ZnGa2O4 monomer catalytic performance, and 96 times higher than RhB self-degradation rate. Capture experiments show that h+ plays a key role in the efficient decomposition of RhB reactive groups. This study provides a new idea and a simple preparation method of novel ZnGa2O4/Ga2O3 S-scheme heterojunction for efficient photocatalytic degradation of organic pollutants.
研究领域:
材料科学
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环境科学
·
光催化技术
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高影响因子
Surfaces and Interfaces
·
2023
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IF 6.2
Shiyong Xu,Yijun Wang,Yue Wu,Mei Li
In order to explore the functional application of coal and realize the high-value application of low-quality coal. Therefore, low-cost coal as a carbon source into environmental protection, high-value coal-based carbon quantum dots (CQDs). This study employed high-sulfur coal as the carbon source and urea as the nitrogen source to successfully synthesize nitrogen and sulfur co-doped coal-based carbon quantum dots (NSCQDs) via a one-pot hydrothermal method. These NSCQDs were utilized as co-catalysts to assist the photocatalytic water splitting and hydrogen evolution of metal phosphides (Co-P and Fe-P). The obtained catalysts were subjected to systematic structural and property analyses, and the photocatalytic hydrogen evolution activity and stability were investigated, along with an analysis of the photocatalytic mechanism. The results revealed that the novel composite photocatalyst exhibited high hydrogen evolution activity, with a maximum hydrogen evolution rate of 28.41 mmol·g −1 ·h −1 at pH 10. Under a wavelength of 520 nm, the apparent quantum efficiency (AQE) reached 4.93%, and the solar-to-hydrogen (STH) conversion efficiency reached 0.46%. The semiconductor type (n-type) of the monophasic catalyst was determined through Mott-Schottky analysis, and the band structure was analyzed accordingly. The conduction and valence band positions for Co-P were determined to be -0.44 eV and 1.31 eV, respectively, while those for Fe-P were found to be -0.51 eV and 1.17 eV, respectively. Based on these results, it is inferred that an S-type heterojunction is formed between Co-P and Fe-P, and NSCQDs enhanced photocatalytic hydrogen evolution as an auxiliary catalyst. This research advances the synthesis of coal-based carbon quantum dots and provides the key information for the photocatalytic decomposition of water and hydrogen evolution using coal-based CQDs.
研究领域:
材料科学
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环境科学
·
能源化学
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DOI
高影响因子
Frontiers in Chemistry
·
2019
·
IF 3.782
Chen Lizhu,Yu Yingjia,Duan Gengli,Wang Xin,Shen Baohua,Xiang Ping
Objective: Chiral analysis is a crucial method to differentiate selegiline intake from drug abuse. A dried urine spot (DUS) analytical method based on spotting urine samples (10 μL) onto dried spot collection cards, and followed by air-drying and extraction, was developed and validated for the determination of selegiline, desmethylselegiline, R/S-methamphetamine, and R/S-amphetamine.Methods: Methanol (0.5 mL) was found to be the ideal extraction solvent for target extraction from DUSs under orbital-horizontal stirring on a lateral shaker at 1,450 rpm for 30 min. Determinations were performed by direct electrospray ionization tandem mass spectrometry (ESI-MS/MS) under positive electrospray ionization conditions using multiple reaction monitoring mode. The chromatographic system consisted of a ChirobioticTM V2 column (2.1 × 250 mm, 5 μm) and a mobile phase of methanol containing 0.1% (v/v) glacial acetic acid and 0.02% (v/v) ammonium hydroxide.Results and conclusions: The calibration curves were linear from 50 to 5,000 ng/mL, with r > 0.995 for all analytes, imprecisions ≤ 15% and accuracies between −11.4 and 11.7%. Extraction recoveries ranged from 48.6 to 105.4% with coefficients of variation (CV) ≤ 13.7%, and matrix effects ranged from 45.4 to 104.1% with CV ≤ 10.3%. The lower limit of quantification was 50 ng/mL for each analyte. The present method is simple, rapid (accomplished in 12 min), sensitive, and validated by a pharmacokinetic study in human urine collected after a single oral administration of SG.
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