INORGANIC CHEMISTRY
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2022
·
IF 5.436
Qiang Zhang,Ranxiao Ao,Ruijie Gao,Huaming Yang
Transition metals with 3d unoccupied orbitals have superior catalytic activity, but inherent high spin suppresses their adsorption capability, leading to sluggish polysulfide conversion kinetics for Li–S batteries. Herein, we provide Fe–O–Si bridge bonds to manipulate eg filling and induce a high-to-medium spin transition of Fe3+ sites, which enhances polysulfide adsorption and facilitates sulfur redox reaction kinetics. The resultant cathodes exhibit outstanding performances under high sulfur loading, which can deliver a high battery specific energy of 1061 mA h·g–1 even after 100 cycles in Li–S pouch batteries. This work provides new insights into the kinetic and multi-step conversion mechanism of the sulfur redox reaction process, helping in the understanding and design of spin-dependent catalysts.
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高影响因子
TETRAHEDRON
·
2017
·
IF 2.651
Zhenyu Tian,Kun Meng,Yanhong Shi,Naixia Zhang,Xuehui Liu,Hongwei Jin,Yongmin Zhang,Lihe Zhang,Demin Zhou,Sulong Xiao
A newly synthesized hexavalent oleanolic acid/per- O -methylated α -cyclodextrin conjugate shows significant differences in NMR spectra with previously synthesized analogs. Characterization of the product by 1 H NMR, 13 C NMR, COSY, HSQC , HMBC , TOCSY , NOE, and ROESY experiments were performed. Detailed investigations revealed that the compound has two conformations in solution and the ratio of them was 1:1. Further variable-temperature NMR study revealed that the two conformations were stable at temperature range of 273–323 K in CDCl 3 solution.
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高影响因子
Metals
·
2025
·Vol. 15
·期 3
·307
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IF 2.5
Ziyang Ruan,Zifan Zhao,Jing Feng
Rare-earth tantalates (RETaO4) are considered as a type of emerging thermal barrier coating materials applied to the hot components of gas turbines and aerospace engines due to their excellent thermal stability, high-temperature fracture toughness, corrosion resistance and extremely low thermal conductivity. However, the relatively low hardness and thermal expansion coefficients may limit their service lifetime in a harsh engine environment. To address the current limitation of rare-earth tantalates and further optimize the mechanical and thermal properties, the defective fluorite-structured Y₂Zr₂O₇ (YZ) was introduced as a second phase into the YTaO4(YT) matrix to form YT1−x–YZx(x = 0, 0.25, 0.5, 0.75, 1) composite ceramics in this work. The mechanical and thermal properties of YT1−x–YZxcomposite ceramics are significantly improved compared to pure-phase YTaO4ceramics. The Vickers hardness of YT1−x–YZx(x = 0.25, 0.5, 0.75) composite ceramics is 9.1~11.3 GPa, which are 2~2.5 times higher than that of YTaO4(4.5 GPa). Among them, YT0.75–YZ0.25exhibits a maximum fracture toughness (3.7 ± 0.5 MPa·m1/2), achieving a 23% improvement compared to YTaO4(3.0 ± 0.23 MPa·m1/2) and a 118% improvement compared to Y2Zr2O7(1.73 ± 0.28 MPa·m1/2). The enhancement is attributed to the combined effect of the intrinsic strengthening of the second phase, as well as the residual stress and grain refinement caused by the introduction of a second phase. Additionally, the thermal expansion coefficients of YT1−x–YZxcomposite ceramics at 1673 K range from 10.3 × 10⁻⁶ K⁻1to 11.0 × 10⁻⁶ K⁻1, which is also higher than that of YTaO4(10.0 × 10−6K−1). Consequently, the superior mechanical and thermal properties indicate that YT–YZ composite ceramics possess promising application prospects for thermal barrier coatings.
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BIOCHEMICAL ENGINEERING JOURNAL
·
2025
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IF 3.8
Chunkai Huang,Han Zhang,Jincan Huang,Lu Zhang,Siqi Tong,Feng Wang,Guangbing Liu,Xuemin Yu,Haibo Xu,Weijing Liu
This study compared and elucidated the performance and mechanisms of aerobic and anoxic flocs in anoxic/aerobic-membrane bioreactor (A/O–MBR) for the printing and dyeing wastewater (PDW) treatment. The batch experiments were conducted with aerobic and anoxic flocs from our continuous laboratory-scale A/O–MBR for the PDW remediation. A distinct discrepancy between aerobic and anoxic activated sludge flocs for chemical oxygen demand (COD) and adsorbable organic halogens (AOX) removal was demonstrated. Specifically, the aerobic flocs exhibited considerable higher COD removal efficiencies (O1 59.0 %, O2 76.4 %) than the anoxic flocs (A1 56.5 %, A2 61.0 %) owing to the stronger organic biodegradability of aerobic respiration, while anoxic flocs exhibited greater performance on the AOX removal (A1 87.8 %) than aerobic flocs (O1 76.8 %) after 12 h biodegradation due to the greater abundance of AOX degradation relevant gene in anoxic flocs. Meanwhile, the study also revealed that the biodegradation was the principal mechanism for COD removal in PDW, whereas, both biodegradation and biosorption contributed to the AOX removal. This study provides valuable insights into the upgrading and reconstruction of A/O process in PDW treatment plants.
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高影响因子
Foods
·
2025
·Vol. 14
·期 18
·3223
·
IF 5.1
Xianxiu Zhou,Jiajing Hu,Hongchun Cui,Jiahao Tang,Yongwen Jiang,Haibo Yuan,Jiahua Li,Yanqin Yang
Floral–fruity aroma Pu-erh tea (FFAPET) is highly valued by consumers for its distinctive and appealing fragrance. This study conducted a comprehensive investigation into the volatile components of FFAPET using advanced analytical techniques, including GC-O-MS, GC-MS/MS, aroma recombination, and omission tests. Compared with traditional stale aroma Pu-erh tea, FFAPET exhibited higher levels of alcohols and alkenes. Through GC-O-MS combined with OAV analysis, 10 key active-aroma compounds were identified in representative FFAPET samples. These compounds included (E, E)-2,4-heptadienal, phenylethyl alcohol, geraniol, (E,Z)-2,6-nonadienal, (Z)-4-heptenal, 2-phenethyl acetate, 2,2,6-trimethylcyclohexanone,D-limonene,β-ionone, and linalool, all of which made significant contributions to the development of the characteristic floral–fruity aroma profile. Tests involving aroma recombination and omission further confirmed that seven of these odorants played essential roles in defining the overall aroma of FFAPET. These findings offer valuable theoretical insights for the enhancement and regulation of Pu-erh tea flavor, particularly for the optimization of the floral–fruity aroma characteristics.
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FOOD CHEMISTRY
·
2025
·
IF 9.8
Enjing Huang,Ziling Li,Fangyuan Zhou,Qinyu Chen,Jiayong He,Xiangyuan Xiong,Youfa Xie,Hongxia Gao,Liqiang Zou
Probiotics offer health benefits but often lose viability during processing and digestion, hindering their use. Therefore, we developed oil-phase gel O/W high internal phase emulsions (HIPEs) by incorporating beeswax to encapsulate Lactiplantibacillus plantarum subsp. Plantarum ( L. plantarum ). The incorporation of 1% and 2% beeswax reduced droplet size while improving the physical stability and strengthening the gel structure of the HIPEs. Crucially, incorporating beeswax markedly improved the retention of L. plantarum within the HIPEs oil phase. In addition, the oil-phase gelled HIPEs enhanced the thermal resistance of L. plantarum at 72 °C and 65 °C. It also imparted storage stability, which was 7.42 log 10 CFU/g with 1% beeswax for 30 days storage at 4 °C. The addition of beeswax to the oil phase of HIPEs minimized L. plantarum 's viability loss in the gastrointestinal tract. This study contributes to the development of a probiotic emulsion encapsulation system that reaches the colon with high viability.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 15
·2644
·
IF 5.1
Chu Ding,Xueqian Guo,Yuan Liu,Zhanjiao Wei,Yuhan Zhang,Wei Gao,Changhua Xu,Wenli Wang
Green (Zanthoxylum schinifolium, ZSEO) and red (Zanthoxylum bungeanum, ZBEO) Sichuan pepper essential oils are widely used spices whose characteristic aromas differ markedly, yet a systematic comparison of their volatile fingerprints and aroma-active compounds is still lacking. To address this, the two essential oils were characterized and compared by combining headspace gas chromatography–ion mobility spectrometry (HS-GC-IMS) and gas chromatography–olfactometry–mass spectrometry (GC-O-MS). HS-GC-IMS detected 94 volatile signals; multivariate analysis clearly separated the two oils (R2Y = 0.993, Q2= 0.986) and identified 40 differential markers including 37 aroma-active compounds, with ZSEOs enriched in minty and green-note compounds like isomenthone and ZBEOs in woody, ester and acid compounds such as bornyl acetate. GC-O-MS identified 37 aroma-active compounds, of which linalool was the most prominent odorant in both Eos; a total of 27 were shared, while four and six were unique to the green and red EOs, respectively. Cross-referencing the two datasets showed that volatile abundance and odor contribution were not always concordant. The combined approach clarifies the chemical basis of the aroma difference between the two species and offers a transferable strategy for linking volatile fingerprints to perceived aroma inZanthoxylumessential oils.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Cuicui Duan,Yi Zhang,Hongru Wang,Siyang Sui,Hui Liu,Cheng Wu,Lin Ma,Fumin Ma,Xiaolei Li,Dan Li
β-LG-EPS-EGCG complex could effectively stabilize W 1 /O/W 2 emulsion during long-time storage. • W 1 /O/W 2 emulsion stabilized by β-LG-EPS-EGCG complex was used to encapsulate Lactobacillus plantarum. • Lactobacillus plantarum encapsulated in W 1 /O/W 2 emulsion was clearly observed under CLSM. • Flow cytometry was used to analyze the survival rate of strains under different treatments. The efficacy of probiotics is limited by their low survival capacity in human gastrointestinal tract. In this study, a water-in-oil-in-water (W 1 /O/W 2 ) emulsion delivery system stabilized by a ternary complex composed of β-lactoglobulin (β-LG), exopolysaccharide (EPS) and epigallocatechin gallate (EGCG) was constructed to encapsulate L. plantarum A81. Compared with native β-LG and binary β-LG-EPS complexes, the β-LG-EPS-EGCG ternary complex significantly decreased emulsion droplet size, improved interfacial protein adsorption efficiency, and formed a denser, elastic interfacial structure. Confocal laser scanning microscopy confirmed more uniform droplet distribution and favorable bacterial encapsulation in ternary complex-stabilized emulsions. Furthermore, the emulsion stabilized by β-LG-EPS-EGCG complex significantly improved the survival rate of strains during 30-day storage (from 27.62% ± 1.35% to 47.33% ± 1.23%), after pasteurization (from 10.55% ± 1.24% to 18.87% ± 1.56%), and after in vitro simulated gastrointestinal digestion (from 3.01% ± 0.81% to 8.97% ± 1.37%). These results demonstrate that β-LG-EPS-EGCG ternary complex is a good stabilizer for W1/O/W2 emulsion. Download: Download high-res image (295KB) Download: Download full-size image
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Lin Zhang,Shihang Jin,Shuo Liu,Qiusheng Fu,Xiaoran Shi,Xian Zhang,Zhizhou Yang,Sheng Gao
The introduction of dynamic covalent bonds imparts reprocessability to the thermosets. However, achieving reprocessing in conventional thermosets, which lack dynamic bonds in their cross-linked networks, remains a significant challenge. Herein, we propose a strategy to fabricate silicon-containing resin-based covalent adaptable networks (CANs) from fully cured phenolic resin and silicone resin via the hybrid exchange reaction between phenolic hydroxyl groups (Ph–OH) and siloxane (Si–O–Si) bonds. This hybrid exchange reaction was validated by the degradation of the silicone resin by phenolic compounds. Subsequently, silicon-containing resin-based CANs were prepared from the two fully cured resins by utilizing this reaction. The resulting CANs demonstrate exceptional mechanical and thermal properties, including a tensile strength reaching up to 25.7 MPa, a glass transition temperature (Tg) exceeding 400 °C, and thermal decomposition temperatures (Td5 and Td10) of 410 and 452 °C, respectively, under a nitrogen atmosphere, along with a high char yield (Yc) of 63.7% at 800 °C. Moreover, the materials demonstrate excellent reprocessability, retaining 91.4% and 87.5% of their original tensile strength after the first and second recycling cycles, respectively, while maintaining a Tg consistently above 400 °C throughout. The silicon-containing resin-based CANs presented here offer a promising new strategy for overcoming the reprocessing challenges associated with traditional thermosets.
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高影响因子
GREEN CHEMISTRY
·
2026
·
IF 10.6
Danni Liu,Kaige Zhang,Wenli Zhao,Xiaopo Niu,Xiangwen Zhang,Qingfa Wang
To address the challenges of complex separation and high energy consumption in producing high-density biofuels from biomass, developing high-efficiency bifunctional catalyst to integrate carbon-carbon coupling and hydrodeoxygenation processes is highly desired. Herein, a bifunctional catalyst with RuOx anchored on the edge of NbOPO4 nanosheets was successfully fabricated through an impregnation-calcination method, enabling one-pot solvent-free conversion of lignin-derived phenol and benzyl alcohol into polycycloalkane perhydrofluorene. The NbOPO4 nanosheet edges were enriched in oxygen vacancies and were prone to anchoring RuOx species preferentially. The optimized 3%RuOx/NbOPO4 exhibited abundant Ru-O-Nb interfacial species, which synergized with Brønsted acid sites (BASs) to enhance the alkylation performance. The in-situ generated Ru0 species from the Ru-O-Nb interfacial species exhibited superior hydrogen dissociation capability, then the synergistic interaction with BASs through hydrogen spillover significantly boosted the hydrodeoxygenation efficiency. 3%RuOx/NbOPO4 with more Ru-O-Nb interfacial species exhibited high conversion of benzyl alcohol (98%) and yield towards perhydrofluorene (72%) under mild conditions (160 °C, 3 h) with a low environmental E-factor (≤2.8). Mechanistic studies identified the cyclization hydrogenation of oxygenated intermediates as the rate-determining step, and the product dicyclohexylmethane was mainly formed from the selective ring opening of perhydrofluorene over the synergy metal-acid sites of 3%RuOx/NbOPO4. This study provides a deep insight into designing efficient bifunctional catalysts for sustainable aviation fuel production through process integration.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Yiting Geng,Yiwei Wang,Qingyu Meng,Ningbo Huang,Shan Huang,Xiaojun Chen
Conventional antimicrobial strategies relying on multiple antibiotics are becoming increasingly ineffective against drug-resistant strains, highlighting the urgent need for non-antibiotic-dependent therapeutic approaches. In this context, nanotechnology-based multifunctional platforms have emerged as a promising frontier in antimicrobial research due to their resistance-free mechanisms, high controllability, and precise targeting capability. This study presents a multifunctional nanoscale system, Fe₃O₄@polydopamine -Vancomycin @DC 2.4 cell membrane (FPVM), designed for the enrichment, recognition, and synergistic eradication of S. aureus. The system features an Fe 3 O 4 core coated with polydopamine, which enhances both photothermal performance and biocompatibility. Vancomycin is subsequently conjugated to the surface to enable specific recognition and bactericidal activity. Finally, the nanoparticles are encapsulated with stimulated dendritic cell (DC) membranes, further reinforcing the targeting ability toward S. aureus. Under 808 nm near-infrared irradiation (1.2 W cm -2 ), the FPVM platform (400 µg mL -1 ) reduced the survival rate of S. aureus to below 5% within 9 h and disrupted over 90% of pre-formed biofilms, demonstrating high photothermal conversion efficiency. In summary, the FPVM system integrates enhanced targeting and antibacterial functions, offering a versatile blueprint for constructing next-generation antimicrobial platforms.
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Journal of Future Foods
·
2026
·
IF 10.6
Ting Zhang,Zhiying Xu,Mengyang Wei,Xiao Liu,Manyou Yu,Yongqing Zhu,Xiaobo Tang,Shengxiang Chen,Yuanyuan Xiong,Yun Wang,Chen Xia,Chen Liu
Comparative profiling of aroma formation in piling and flowering Tibetan tea. • Stem decoction–assisted flowering enhanced fungal–floral and medicinal aromas. • Nine key volatiles were identified across Tibetan teas pile-fermentation types. • GC–O–MS and ROAV integrated with microbiome data to link aroma with taxa. • Thermophilic fungi and actinobacteria associated with the woody note. Solid-state fermentation can generate diverse aroma profiles, but the outcomes are often difficult to predict and standardize, which limits scalable production and intelligent quality control in fermented foods. Tibetan dark tea provides a relevant model because pile fermentation followed by flowering can produce distinct aroma styles. In this study, we compared four processing regimes to examine flowering under different pile fermentation levels: short piling (S1), tea stem decoction assisted flowering after short piling (S2), long piling (S3), and long piling followed by stem-decoction-assisted flowering (S4). Sensory evaluation revealed clear differences among regimes. S3 showed balanced woody and sweet notes, whereas S4 exhibited stronger medicinal notes together with fungal and floral impressions. GC-O-MS (gas chromatography-olfactometry-mass spectrometry), untargeted volatilomics, and ROAV (relative odor activity value) analysis identified nine key odorants with distinct trends across processes. Correlation analysis suggested that thermophilic fungi such as Thermomyces lanuginosus and heat-tolerant bacteria including Saccharopolyspora gregorii and Staphylococcus gallinarum were positively associated with woody-associated volatiles. In contrast, Leuconostoc, Weissella , and several proteobacteria taxa were negatively associated with grassy aldehydes such as hexanal. Overall, this study integrates sensory profiling, odorant prioritization, and microbiome association analysis to identify candidate odorant markers and associated microbial signatures, providing a basis for future process optimization and aroma quality control in flowering Tibetan dark tea. The framework may also inform aroma design and quality control for other solid-state fermented foods. Download: Download high-res image (183KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）