JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Wisal Muhammad,Nazma Faqir,Muhammad Asif Khan,Zaheen Ullah Khan,Bilal Ahmad,Muhammad Jawad Ahmad,Amir Zada,Fawad Ali,Sajid Nadeem,Muhammad Zaka Ansar,Wajid Ali
Developing an efficient visible-light-driven photocatalysts for conversion of atmospheric CO 2 into valuable fuels is a promising strategy to mitigate the escalating greenhouse gas, environmental, and energy crisis. This study presents an innovative design for a cascade Z-scheme comprising of dimensional matched SnO 2 -α-Fe 2 O 3 /g-C 3 N 4 (SO-FO/CN) nanosheets heterojunction. In this configuration, SnO 2 functions as an optimal energy platform that not only facilitates charge transfer and separation but also sustains sufficient thermodynamic energy for redox reactions and inhibits the undesired type-II charge transfer pathway. The optimized cascade Z-scheme exhibits a remarkable 20-fold improved photoactivity for CO 2 conversion to CH 4 and CO compared to bare g-C 3 N 4 (CN). It also shows significantly improved photocatalytic activity for the degradation of toxic organic pollutants, 2,4-dichlorophenol (2,4-DCP) ∼6.6-fold and bisphenol A (BPA) ∼4.2-fold, respectively. The improved photocatalytic activity results from effective charge separation facilitated by the Z-scheme, along with a favorable energy platform and extended charge lifetime. This innovative strategy, which utilize an energy platform, presents a promising approach for designing an efficient Z-scheme heterojunction photocatalysts for solar-to-fuel conversion and pollutant degradation.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Ze-Feng Xu,Chuan-Wu Chen,Ya-Nan Jing,Da-Qiang Liu,Hong-Xin Zhang,Qiu-Xia Lin,Lei-Lei Li,Xing-Liang Yin
Slow kinetics of the oxygen evolution reaction (OER) during water electrolysis limits hydrogen evolution reaction (HER) efficiency. Urea oxidation reaction (UOR), with a lower thermodynamic potential (0.37 V vs. RHE) than OER, offers an energy-saving alternative. Designing robust, multifunctional electrocatalysts for hydrogen generation by water electrolysis remains challenging. In this work, a universal two-stage solvothermal strategy was developed to synthesize α/β-FeOOH-based self-supported hierarchical structure catalysts on arbitrary metal substrates, evading polymeric binders. FeOOH/Fe achieves exceptional HER performance, while FeOOH/Ni delivers superior OER/UOR activity, exhibiting extremely-low UOR kinetics with a 12.24 mV·dec −1 Tafel slope. Asymmetric FeOOH/Ni (+)||FeOOH/Fe (−) electrolyzer requires ultralow voltages of 1.799 V (1.0 M KOH), 1.888 V (seawater/1.0 M KOH), and 1.627 V (0.33 M urea/1.0 M KOH) to drive 300 mA cm −2 , surpassing most similar systems. It maintains >9 Faraday efficiency over 100-h at ≥ 300 mA cm −2 , demonstrating industrial-grade stability. The catalysts’ accessible active sites, accelerated charge transfer, rapid kinetics, and superhydrophilicity synergistically enable rapid mass/electron transport and durable operation. This work provides a scalable platform for binder-free electrocatalysts, advancing practical hydrogen production through urea-assisted electrolysis and seawater utilization.
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JOURNAL OF ORGANIC CHEMISTRY
·
2019
·
IF 4.745
Yong-Long Zhao,Xing-Hai Fei,Yong-Qin Tang,Peng-Fei Xu,Fen-Fen Yang,Bin He,Xiao-Zhong Fu,Yuan-Yong Yang,Meng Zhou,Yuan-Hu Mao,Yong-Xi Dong,Chun Li
An organocatalytic asymmetric α-sulfenylation of 2-substituted indolin-3-ones with N-(alkylthio or arylthio)succinimides has been developed for the first time using Cinchona-derived squaramide as the catalyst. Various chiral 2,2-disubstituted indole-3-ones with S- and N-containing heteroquaternary carbon stereocenters were obtained with up to 98% yield and 99% ee.
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FUEL
·
2025
·
IF 7.5
Jinxue He,Chao Huang,Likun Yang,Dan Liu,Hu Li,Aijing Ma,Shiguang Pan,Angui Zhang,Haoxuan Yu,Jianzhou Gui
Lewis acid imidazolium-based ionic liquids (ILs) with inorganic anions of [Al 2 Cl 7 ] - , [Al 2 Ti x Cl 7+4x ] - , [Al 2 Zr x Cl 7+4x ] - , and [Al 2 Ga x Cl 7+3x ] - have been synthesized in good yields and used as the catalysts for the polymerization of Fischer-Tropsch (FT) mixed α-olefins. The poly alpha-olefins (PAO) products have been tuned through various bimetallic Lewis-acid ionic liquids (ILs). A high PAO yield of 95 % and excellent selectivity to trimers & tetramers of 65 % were achieved at 100 °C for 120 min using 3 wt% [Bmim][Al 2 Ga 0.1 Cl 7.3 ] as the catalyst. The bimetallic Lewis acid ILs are easily separated from the reaction mixture and recycled with good stability. Molecular orbital studies show the LUMOs of IL anions have changed from Al to the other metal site (Ga/Ti/Zr), leading to a weakened Lewis acidity, finally making the PAO structure tunable. Notably, the synthesis of PAO products by bimetallic ILs from Fischer-Tropsch (FT) mixed α-olefins, instead of 1-decene from ethylene production, was demonstrated to be effective, ensuring a green, low-cost, and recyclable technology industrially. Furthermore, the IL catalysts demonstrated inherent safety and environmental compatibility, positioning them as promising alternatives to conventional BF 3 catalysts.
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Plants-Basel
·
2026
·Vol. 15
·期 17
·2654
·
IF 4.7
Feiran Hu,Wenzhao Zhou,Nong Zhou,Lanlan Wan,Linyun Pu,Caiyun Fu,Hua Zhang,Junsheng Qi
Lycopus lucidusTurcz. var.hirtusRegel (L. lucidusvar.hirtus) is a medicinal herb traditionally used in Chinese folk medicine for the treatment of inflammatory disorders, joint pain, and rheumatoid arthritis (RA)-like symptoms. However, systematic research on the bioactive flavonoids of this herb in RA-related cellular models is limited. The aim of this study was to isolate the main flavonoid from this herb and evaluate its in vitro anti-inhibitory effects in TNF-α-induced human RA fibroblast-like synoviocytes (HFLS-RA). Flavonoids were extracted, purified, and isolated using chromatographic techniques. The structure was elucidated by spectroscopic analysis. The effects of the isolated compound were assessed in a TNF-α-induced HFLS-RA cell model by evaluating pro-inflammatory cytokine secretion and cell proliferation/metabolic activity. A main flavonoid was identified as formononetin. Formononetin exhibited antioxidant activity and inhibited TNF-α-provoked inflammatory responses in HFLS-RA cells under cell-safe concentrations, as evidenced by reduced secretion of IL-6, IL-8, and IL-1β and suppression of TNF-α-induced hyperproliferation. In conclusion, formononetin is a major flavonoid constituent ofL. lucidusvar.hirtus, and these findings provide preliminary in vitro cellular evidence that formononetin exerts in vitro anti-inflammatory inhibitory activity on TNF-α-activated human RA fibroblast-like synoviocytes. Further in vivo and mechanistic studies are required to explore its potential for anti-RA-related pharmacological application.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Wei Jia,Xin Wang
The potential mechanisms about the health risks of endogenous 3-MCPD remain elusive. Here, we researched the influences of 3-MCPD on the metabolic landscape of digested goat infant formulas via integrative UHPLC-Q-Orbitrap HRMS-MS/MS-based peptidomics and metabolomics (%RSDs ≤ 7.35 %, LOQ 2.99–58.77 μg kg −1 ). Digested goat infant formulas under 3-MCPD-interference caused metabolic perturbation by down-regulating levels of peptides VGINYWLAHK (5.98–0.72 mg kg −1 ) and HLMCLSWQ (3.25–0.72 mg kg −1 ) pertained to health-promoting bioactive components, and accelerated the down-regulation of non-essential amino acids (AAs, l -tyrosine 0.88–0.39 mg kg −1 , glutamic acid 8.83–0.88 μg kg −1 , and d -aspartic acid 2.93–0.43 μg kg −1 ), semi-essential AA ( l -arginine 13.06–8.12 μg kg −1 ) and essential AAs ( l -phenylalanine 0.49–0.05 mg kg −1 ) that provide nutritional value. Peptidomics and metabolomics interactions elucidated that 3-MCPD altered the stability of α-lactalbumin and d -aspartate oxidase in a dose-dependent manner, and affected the flavor perception of goat infant formulas, leading to a decline of nutritional value of goat infant formulas.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Muhammad Noman,Azizullah,Temoor Ahmed,Yizhou Gao,Hui Wang,Xiaohui Xiong,Jiajing Wang,Jiajun Lou,Dayong Li,Fengming Song
The ubiquitin–proteasome system (UPS) regulates protein quality or control and plays essential roles in several biological and biochemical processes in fungi. Here, we present the characterization of two UPS components, FonDoa1 and FonDoa4, in watermelon Fusarium wilt fungus, Fusarium oxysporum f. sp. niveum (Fon), and their biological functions. FonDoa1 localizes in both the nucleus and cytoplasm, while FonDoa4 is predominantly present in the cytoplasm. Both genes show higher expression in germinating macroconidia at 12 h. Deletion of FonDoa1 or FonDoa4 affects vegetative growth, conidiation, conidial germination/morphology, apoptosis, and responses to environmental stressors. FonDoa1, but not FonDoa4, positively regulates autophagy. The targeted disruption mutants exhibit significantly attenuated pathogenicity on watermelon due to defects in the infection process and invasive fungal growth. Further results indicate that the WD40, PFU, and PUL domains are essential for the function of FonDoa1 in Fon pathogenicity and environmental stress responses. These findings demonstrate the previously uncharacterized biological functions of FonDoa1 and FonDoa4 in phytopathogenic fungi, providing potential targets for developing strategies to control watermelon Fusarium wilt.
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Polymers
·
2021
·Vol. 13
·期 19
·3329
·
IF 4.329
Beibei Wang,Heng Liu,Tao Tang,Xuequan Zhang
Highlycis-1,4 selective (up to 98%) coordination–insertion polymerization of 1,3-butadiene (BD) has been achieved herein using acenaphthene-basedα-diimine cobalt complexes. Due to the presence of intra-ligand π-π stacking interactions, the complexes revealed high thermostability, affording polybutadiene products in high yields. Moreover, all of the obtained polymers possessed a relatively narrow molecular weight distribution as well as high molecular weight (up to 92.2 × 104Dalton). The molecular weights of the resultant polybutadienes could be finely tuned by varying polymerization parameters, including temperature, Al/Co ratio, etc. Moreover, the copolymerization of butadiene with polar monomer 2-(4-methoxyphenyl)-1,3-butadiene (2-MOPB) was also successfully realized to produce a type of polarcis-1,4 polybutadiene (cis-1,4 content: up to 98.1%) with a range of 2-MOPB content (0.46–1.83%). Water contact angle measurements indicated that the insertion of a polar monomer into a polymer chain could significantly improve the polymer’s surface property.Keywords:cis-1,4 selective;1,3-butadiene;α-diimine cobalt complexes;copolymerization;π-π stacking interactions
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IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2024
·
IF 5.6
Luheng Wang,Maoyuan Nan,Xisi Long
To realize the simultaneous measurement of gap and gas concentration between narrow curved surfaces, in this article, a flexible spiral sensing element based on $\alpha $ -Fe2O3-doped multiwalled carbon nanotubes (MWCNTs) (mass ratio is 100) coated with polytetrafluoroethylene (PTFE) is prepared by spraying and spin coating technology using polyimide (PI) film as the substrate. The spiral structure has eddy current effect under ac excitation, which is sensitive to the change in the gap between the sensing element and metal target. Meanwhile, the $\alpha $ -Fe2O3-doped MWCNTs can respond to gas. The experimental results indicate that the gas response values of impedance amplitude, impedance angle, and resistance are 0.509%, 0.216%, and 1.376% at ethanol vapor concentration of 5000 ppm when the curvature radius is 50 mm with a gap of 0.5 mm, respectively. The absolute/relative sensitivities of impedance amplitude and impedance angle to the gap are 175 $711.54~\pm ~1424.85~\Omega \cdot \text { mm}^{-1}$ /11.347% $\pm ~0.095{\%}\cdot \text { mm}^{-1}$ and $2.614^{\circ }~\pm ~0.015^{\circ }\cdot \text { mm}^{-1}$ /5.307% $\pm ~0.033{\%}\cdot \text { mm}^{-1}$ in the gap range of 0–0.5 mm, respectively. In addition, according to impedance complex plane diagram of the sensing element, a signal processing method based on R–X is proposed, and the ability of flexible spiral sensing element to simultaneously measure the gap and gas concentration between narrow curved surfaces is preliminarily verified.
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FOOD CHEMISTRY
·
2020
·
IF 6.306
Jiaxin Wang,Xuening Lu,Jiaen Zhang,Zeheng Xiao
Lipids such as phosphatidylcholine (PC), 3- sn -phosphatidylethanolamine (PE), sphingomyelin (SM) and L-α-lysophosphatidylcholine (LPC) are the major components of biological membranes and play important roles in physiological functions. Here, PC, PE, SM, and LPC were extracted from golden apple snails (GAS, Pomacea canaliculata ) and GAS flesh (GASF) using an ethanol/hexane sequential scheme and quantified simultaneously using ultra-high performance liquid chromatography-electrospray ionization-tandem mass spectrometry (UHPLC-ESI-MS/MS) to evaluate whether the GAS could be the source of the four lipids. Our results suggest that ethanol extracts contained the most crude lipids, and the yield of dry (evaporated) lipids were 3.45 g per 100 g fresh GASF and 1.82 g per 100 g of fresh GAS. Quantification of the lipids using UHPLC-ESI-MS/MS suggested that GAS contained PE, PC, SM and LPC, with SM being the most abundant lipid (after purification: 1.71 and 1.42 mg g −1 dry weight from 100 g of GASF and GAS, respectively). The method we used is cost-effective, and the recovery rates of ethanol and hexane ranged from 80−91% and 87−91% respectively. Overall, GAS and GASF are potential raw materials for lipids such as SM and PC extraction using the ethanol/hexane method. Comparatively, lipids extraction from the GAS is more effective and timesaving. Our finding would provide a way to utilize GAS and potentially control its invasion.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Weihang Lu,Tao Chen,Cheng Shen,Denglang Zou,Juyuan Luo,Shuo Wang,Zhibo Song,Jing Jia,Yulin Li
In the present study, an efficient strategy has been established for rapid screening of potential α-glucosidase inhibitors from the waste leaves of Rheum tanguticum by activity-oriented extraction and enrichment optimization, UPLC-QTOF-MS/MS, molecular docking, and in vitro validation. With α-glucosidase inhibitory activity as the evaluation index, the extraction process was optimized by response surface methodology and the enrichment process by macroporous resins was optimized by adsorption and desorption experiments. The active flavonoids yield was 8.85 mg/g under the optimized extraction conditions. After AB-8 macroporous resins enrichment, the active flavonoids purity increased from 2.89 % to 47.6 %, a 17-fold increase, while the IC 50 of α-glucosidase reduced from 13.97 mg/mL to 412 μg/mL, a 33.9-fold reduction. Thirty-six flavonoids in the active flavonoids fraction were identified by UPLC-QTOF-MS/MS. Molecular docking screening, in vitro activity assay and multispectral approaches verification confirmed the potential of six flavonoids as novel α-glucosidase inhibitors.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Siwei Chen,Qingqing Chen,Baogang Wang,Hongsheng Lu
The application of carbon dots (CDs) as lubricant additives of nonpolar oils such as poly-α-olefins (PAOs) has been greatly hindered because most of CDs derived from the bottom-up method were water-soluble. In this work, the oil-soluble polymer brushes grafted CDs were synthesized by the surface-initiated atom transfer radical polymerization of bis-alkyl chain monomers. As expected, the polymer grafted CDs exhibited the excellent long-term dispersion stability in PAO owing to the principle of similar compatibility. As the lubricant additives of PAO4, the CDs showed the best friction-reducing and anti-wear properties when the polymerization time was 2 h. Adding 1 wt% of CDs could make the coefficient of friction and wear volume of PAO4 reduce by 64.1 % and 49.6 %, respectively. Moreover, both the tribological properties and anti-rust performance of CDs were superior to the commercially used ZDDP. The distinguished friction-reducing and anti-wear properties of CDs were attributed to the synergistic lubrication of carbon cores and polymer brushes. The rolling, repairing and polishing action of carbon cores, together with the tribo-reactions of polymer brushes, resulted in the formation of tough lubricating films on the rubbing surfaces, thereby tremendously alleviating the friction and wear of tribopair. The impressive anti-rust performance of CDs could be assigned to their strong adsorption ability on metallic surfaces. The above results are hopeful to provide useful information for the design and development of efficient multifunctional additives such as polymer-grafted metallic or inorganic nanomaterials.
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