BIOMASS & BIOENERGY
·
2025
·
IF 5.8
Xu Liu,Zewang Liu,Haojie Chen,Guang zai Nong
This study developed a synergistic activation-doping strategy using Wild Jujube Pits as a carbon source. The K 2 CO 3 /(NH 4 ) 2 SO 4 /H 3 BO 3 ternary system synchronously modulates pore evolution and heteroatom doping, successfully constructing N/O/B/S-co-doped hierarchical porous carbon (JS1211). Characterisation results demonstrate that JS1211 possesses a high SSA of 1496 m 2 g −1 with hierarchical porosity (micropores: 0.4–0.8 nm; mesopores: 2–10 nm). XPS analysis confirms uniform co-doping of N (7.55 at%), B (6.04 at%), S (0.56 at%), and O (15.78 at%), where pyridinic-N (49.4 %) and BC 2 O (43.6 %) configurations dominate. DFT calculations reveal a three-tiered doping mechanism proceeding through structural distortion → electronic reconstruction → property optimisation. Electrochemical testing shows JS1211 delivers a specific capacitance of 411 F g −1 at 0.5 A g −1 , with 81.75 % capacity retention at 20 A g −1 and 97.31 % capacitance retention after 5000 cycles (Coulombic efficiency: 100.46 %). The assembled symmetric supercapacitor achieves an energy density of 12.85 Wh kg −1 (Power density: 129.71 W kg −1 ) in a 6 M KOH electrolyte, while retaining 7.85 Wh kg −1 at a power density of 10,335 W kg −1 . This work provides new insights for developing biomass-derived high-performance supercapacitor electrodes.
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Foods
·
2026
·Vol. 15
·期 3
·
IF 5.1
Ning Ma,Jiancai Zhu,Heng Wang,Michael C. Qian,Zuobing Xiao
Apple aroma is an important factor influencing consumers’ preferences. To understand the overall flavor characteristics of apples (Ruixue, Liangzhi, Grystal Fuji, and Guifei), volatile compounds and aroma profiles were investigated by headspace–gas chromatography–ion mobility spectrometry (HS-GC-IMS) combined with stir bar sorptive extraction (SBSE) and gas chromatography–mass spectrometry (GC-MS). The results showed that a total of 56 aroma compounds were identified by SBSE-GC-MS, and 39 aroma-active compounds were screened out using aroma intensity (AI) and odor activity value (OAV). Aroma recombination experiments showed enhanced ‘fruity’ and ‘sweet’ notes, whereas ‘floral’, ‘woody’, and ‘green’ aromas were weaker compared to the Crystal Fuji sample. Additionally, GC-IMS coupled with principal component analysis (PCA) was used to distinguish the apple samples, and partial least squares regression (PLSR) was applied to explore the correlation between sensory attributes and characteristic aroma compounds. The results indicated that Crystal Fuji exhibited the greatest correlation with the “woody” attribute, and Ruixue was highly correlated with “fruity”, “green”, and “sour” attributes, while butanoic acid, β-damascenone, butyl acetate, pentyl acetate, furfuryl alcohol, γ-decalactone, and vanillin had a significant impact on the “flower” and “sweet” attributes of Guifei. This study clarified the characteristic aroma composition of the four apple cultivars, providing data support for apple flavor quality evaluation and cultivar optimization.
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LANGMUIR
·
2026
·
IF 4.4
Xuan Yang,Jing Ren,Tianjing Shi,Yongkang Lv,Rui-Peng Ren
Abstract Nitrogen-doped carbon materials derived from metal–organic framework (MOF) have been commonly regarded as promising metal-free electrocatalysts for the oxygen reduction reaction (ORR). However, their performance is severely limited by nanoparticle agglomeration-induced sluggish mass transfer, insufficient ORR intermediate adsorption regulation by sole N doping, and structural damage from excessive heteroatom doping. Herein, we report a mesoscopic superstructure engineering strategy to fabricate moderately nitrogen–oxygen codoping MOF-derived carbon sphere superstructures (N/O-CNS) for high-performance ORR. A three-dimensional (3D) spherical MOF superstructure precursor was first constructed via urea-induced self-assembly of one-dimensional (1D) rod-like Zn-MOF-74, followed by one-step controlled pyrolysis to preserve the 3D hierarchical architecture and achieve uniform nitrogen–oxygen doping. The 3D superstructure provides abundant accessible catalytic centers and accelerated mass/electron transport rates. Density functional theory (DFT) calculations verify that, compared with sole N doping, nitrogen–oxygen codoping further optimizes the adsorption energy of the rate-determining *OOH intermediate and lowers the ORR reaction energy barrier. Regulated pyrolysis enables continuous tuning of nitrogen–oxygen codoping content and the graphitization degree of the carbon matrix, achieving a favorable trade-off among catalytic site population, charge transport efficiency, and structural integrity. Notably, the optimized N/O-CNS-1000 with the lowest doping content among all samples exhibits exceptional ORR activity in alkaline electrolyte, with an onset potential of 0.98 V and a half-wave potential (E1/2) of 0.83 V, outperforming commercial Pt/C. When assembled into rechargeable Zinc-air batteries (ZABs), the N/O-CNS cathode achieves a maximum power density of 140.55 mW cm–2 and good cycling lifespan of over 750 h.
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Zhiwei Li,Lei Wang,Li Fu
Engineering interatomic orbital hybridization to mediate the dynamic coupling of interfacial charge transfer and surface oxygen evolution remains a challenge in boosting the photoelectrochemical (PEC) water oxidation performance. Herein, a three-dimensional nanoporous network heterostructure of BiVO 4 /LaCoO 3 is fabricated by decorating BiVO 4 with LaCoO 3 perovskite single-crystalline quantum dots (PSC QDs). The enhanced interfacial built-in electric field in band-matched BiVO 4 /LaCoO 3 sharpens band bending, providing the driving force for interfacial charge transfer. Experiments and theoretical calculations reveal that V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization at BiVO 4 /LaCoO 3 interface provides a low-barrier hopping pathway for electron transitions, strengthens Co-O covalency, and optimizes the Co d -band center position. Co–O antibonding/bonding states shifting toward the Fermi level and Co 3+ -O 2− -Co 4+ double exchange facilitate efficient electron-hole separation, which regulate the electronic structure for BiVO 4 /LaCoO 3 . The BiVO 4 /LaCoO 3 photoanode achieves an enhanced photocurrent density of 4.19 mA cm −2 (vs. 2.01 mA cm −2 for BiVO 4 at 1.23 V vs. RHE). Meanwhile, online electrochemical test presents that the LaCoO 3 coupling on BiVO 4 provides rich active sites for the oxygen evolution reaction (OER), promoting the hole relaxation dynamics. Bridge-mediated coupling of charge transfer and photocatalytic oxidation via V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization is kinetically favorable, thus synergistically improving the PEC performance for BiVO 4 /LaCoO 3 . This work offers a valuable insight into the mechanism of interfacial charge transfer and OER during the PEC process. The built-in electric field in band-matched BiVO 4 /LaCoO 3 and V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization at BiVO 4 /LaCoO 3 interface provide a low-barrier hopping pathway for electron transitions, which is favorable for the fast OER. Download: Download high-res image (270KB) Download: Download full-size image
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Surfaces and Interfaces
·
2026
·
IF 6
Aidi Xie,Wusong Geng,Chun Chen,Yunxia Zhang,Haimin Zhang,Guozhong Wang
A mesoporous SiO 2 -supported Ag catalyst co-modified with B 2 O 3 and amino groups (B/Ag@NH 2 −MS) was synthesized through the grafting of amino group onto silica and subsequent impregnation with 10 wt.% Ag and 5 wt.% B 2 O 3 . Density functional theory (DFT) calculations and Bader charge analysis showed that boron (B) doping triggered extensive electronic changes in the modified support. It implied that B atoms gained a partial positive charge, showing Lewis acidic nature, while nearby Ag atoms had a partial negative charge. This electronic redistribution led to a downward movement of the Ag d -band center and a decrease in the work function, which in turn modulated the binding energies of adsorbates and reduced the desorption barrier of MG. Such dual-site cooperation strengthened the adsorption and polarization of the DMO carbonyl group at the adjacent Ag and B sites, thus promoting the activation of the C = O bond. Moreover, the anti-sintering capacity of Ag nanoparticles could be ascribed to their efficient stabilization mechanism, resulting from the synergistic action of oxygen-bridged B/O/Ag species and –NH 2 functional groups.Consequently, it is noted that the catalyst is able to maintain a conversion of about 99% DMO and a selectivity of about 94% MG, and it was able to maintain a conversion rate of over 96% for >350 h. These observations highlight a dual-site electron synergy strategy for developing very active and long-lasting Ag catalysts for ester hydrogenation.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiahong Xie,Shiyu Liu,Yang Xu,Boyu Song,Jingli Liu,Guangyi Du,Lianghua Xie,Wei Chen
Alcoholic liver disease (ALD) is one of the most prevalent liver diseases worldwide. There are currently no FDA approved pharmacological therapies specifically designed to prevent or treat ALD. Targeted nutritional interventions offer a promising avenue for ALD management. Cyanidin-3-O-glucoside (C3G), a natural anthocyanin, has shown potential in mitigating alcoholic liver injury, but its therapeutic utility is limited by poor stability and inadequate liver targeting. Here, we report a galactosylated chitosan-modified nanoplatform for the encapsulation and hepatic targeted delivery of C3G. The fabricated nanonutriosomes (C3G@GC-NS) exhibited favorable physicochemical stability, biosafety, and enhanced C3G accumulation in the liver. In a mice model of alcoholic liver injury induced by 15-day ethanol feeding, oral administration of C3G@GC-NS at a dose of 150 mg /kg (C3G equivalent) daily significantly alleviated liver injury. C3G@GC-NS outperformed free C3G in ameliorating steatosis, inflammation, and metabolic dysfunction. Mechanistically, the nanotherapeutic activates the AMPK signaling pathway, regulates PPARα-driven lipid and ethanol metabolism, and restores alcohol-induced gut microbiota dysbiosis. This study presents a rationally designed nanoplatform that enhances the therapeutic efficacy of C3G through coordinated modulation of hepatic metabolism and the gut-liver axis, offering a novel strategy for the treatment of ALD.
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Journal of Energy Storage
·
2026
·
IF 10.7
Xiaochen Wu,Yongtao Zhao,Rui Yang,Jiaxuan Feng,Sujuan Cheng,Ning Liu,Teng Long,Pengchao Si
Silicon anodes for advanced lithium-ion batteries (LIBs) are promising due to intrinsic advantages including ultrahigh theoretical capacity (4200 mAh g −1 ), near-optimal Li + /Li potential (∼0.4 V), abundant availability and environmental benignity. However, practical application is hindered by severe intrinsic challenges: drastic volume expansion (>300%), unstable solid-electrolyte interphase (SEI) formation, and sluggish reaction kinetics. To address these limitations, we fabricated a novel Si@T-Nb₂O₅@Carbonized-coxial carbon nano fiber composite via a scalable hydrothermal-electrospinning approach, featuring silicon nanoparticles encapsulated in a nitrogen-doped porous carbon matrix with an engineered T-Nb₂O₅ interphase layer. Theoretical simulations demonstrate that the T-Nb₂O₅ interphase promotes Li + diffusion and reduces the energy barrier at carbon/Si interfaces. The optimized electrode exhibits excellent cycling stability and high-rate performance (1030.1 mAh g −1 after 100 cycles at 0.2 A g −1 ; 507.7 mAh g −1 after 500 cycles at 2.0 A g −1 ). Notably, flexible pouch cells maintain stable LED illumination under repeated mechanical deformation, indicating great practical potential. This integrated electrospinning strategy provides a scalable manufacturing platform for high-energy flexible batteries.
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Materials
·
2026
·Vol. 19
·期 14
·3069
·
IF 3.7
Bo Ma,Guoqiang Huang,Wenwen Hu,Wenxue An,Gailan Ma,Maohui Li,Youjun Lu
The degradation of organic pollutants through photocatalysis is currently a major research focus. Core–shell heterostructures of metal semiconductors have been widely recognized as an effective strategy for enhancing photocatalytic performance, particularly when alloy nanoparticles are incorporated due to their unique electronic and catalytic properties. However, conventional synthetic approaches typically rely on high-temperature and high-pressure conditions, which often induce undesirable particle overgrowth and aggregation. Herein, AuPt bimetallic alloy nanoparticles were successfully fabricated via two successive in situ redox processes under room-temperature and ambient-pressure conditions, which were in situ integrated with Cu2O to form multilevel core–shell composite particles. Structurally, an octahedral Cu2O crystal serves as the inner core (denoted as Cu2O(O)), sequentially coated with a Cu2O nanoparticle (denoted as Cu2O(P)) interlayer and a AuPt alloy nanoparticle shell. Functionally, the enhanced photocatalytic activity of Cu2O(O)@Cu2O(P)@AuPt was proven to be attributed to a dual function of AuPt, which includes an adsorption-induced polarized interface and an efficient charge-transfer mediator with the ohmic contact. This work demonstrates a mild and versatile synthetic strategy for constructing semiconductor–alloy heterostructures, offering valuable insights into the rational design of highly efficient and stable photocatalysts.
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Plants-Basel
·
2026
·Vol. 15
·期 14
·2125
·
IF 4.7
Wenjing Zhang,Yuting Li,Shuaibo Shao,Xingyuan Yao,Chengzhe Zhou,Zhong Wang,Yuqiong Guo
High-altitude environments provide a favorable basis for tea quality formation, but suitable processing parameters for high-altitude Oolong Tea (HAOT, Camellia sinensis (L.) O. Kuntze) remain unclear. This study optimized key processing parameters for HAOT using a three-factor, three-level orthogonal design involving withering method, shaking intensity and standing time. Sensory evaluation, quantitative descriptive analysis (QDA), macro-compositions determination, headspace solid-phase microextraction coupled with gas chromatography–mass spectrometry (HS-SPME-GC-MS), multivariate statistics and correlation analysis were used to clarify quality differences and their chemical basis. Leaf anatomical observation showed that high-altitude fresh leaves had a thicker cuticle and more compact mesophyll structure, suggesting the need for targeted processing regulation. Range analysis indicated that shaking intensity had the largest R value for sensory scores, followed by withering method, whereas standing time showed a comparatively small R value. The favorable combination was combined withering, heavy shaking (6 rounds) and 60 min standing, hereafter referred to as FHM. FHM showed the highest floral and fruity aroma scores and produced a mellow, full-bodied taste with a sweet aftertaste. It also contained significantly higher flavonoid and soluble sugar levels than the other processing combinations. A total of 65 volatile organic compounds were detected, with terpenoids and esters as the dominant classes. ROAV analysis identified geraniol, linalool, β-ionone, ( E )-nerolidol and benzaldehyde as representative major aroma-active compounds, while geraniol and linalool were especially prominent in FHM. Correlation analysis further linked flavonoids and soluble sugars with positive taste attributes, and linalool and geraniol with floral–fruity aroma. These results provide a practical basis for optimizing HAOT processing and improving product quality.
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FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Qi Wu,Xinna Hu,Shuyu Lu,Bo Xu,Chenyu Bai,Tao Ma,Yi Song
Compared with traditional single emulsions, the distinct three-phase and two-interface structures of double emulsions enable them to simultaneously encapsulate and deliver hydrophilic and lipophilic compounds, which significantly broadens their applications. Here, cellulose nanocrystal (CNC)/β-lactoglobulin (β-LG) complexes and polyglycerol polyricinoleate (PGPR) were used to fabricate water-in-oil-in-water (W/O/W) emulsions. We first examined the influence of different PGPR concentrations (1.0, 3.0, 5.0, and 7.0 wt%) and O:W 1 mass ratios (9:1, 8:2, 7:3, and 6:4) on the stability of the primary W 1 /O emulsions. Building on this, the influence of different W 1 /O:W 2 mass ratios (1:9, 2:8, 3:7, and 4:6) on W 1 /O/W 2 emulsions was studied. We then utilized laser confocal microscopy to explore the internal environment of the emulsions and employed urea and sodium dodecyl sulfate as interventions to analyze the interactions at their interfaces. Finally, curcumin and epigallocatechin gallate were selected as model hydrophobic and hydrophilic nutrients, respectively, to confirm the promising applications of the W 1 /O/W 2 emulsion. Their encapsulation efficiencies reached 95.7 % and 86.8 % when co-loading in the W 1 /O/W 2 emulsion. Additionally, in vitro simulated digestion revealed that nutrients remained protected throughout oral and gastric stages, with controlled release occurring upon intestinal arrival, and their bioaccessibility was enhanced to 65.1 % and 71.6 %, respectively. The W 1 /O/W 2 emulsions we prepared and the elucidation of their underlying mechanisms have presented new possibilities for developing food and delivery systems in the future.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Tianren Zhao,Yuanqing Cao,Jiarui Dong,Hong Zhang,Chengzhi Wang,Zengguo Feng,Haibo Jin,Aiying Zhang
The quest for ever-growing energy density of lithium-ion batteries dictates urgent concerns about their thermal safety. Phase change materials (PCMs) are considered promising for battery thermal management, yet their extensive application is restricted by inherent limitations such as leakage risk, low thermal conductivity, and flammability. Here, we fabricate a multilayered PCL@PEG/Al₂O₃-ADP (CEAD) composite film through strategy of coaxial electrospinning and dip-coating. Benefiting from the effective PEG encapsulation, thermally conductive Al₂O₃ fillers, and an ADP coating for flame retardancy, the composite film demonstrates excellent shape stability with no leakage even after 12 h of continuous exposure at 50 °C, high phase change enthalpy, improved thermal conductivity, and self-extinguishing behavior. Its notable foldability also ensures facile installation. When wrapped around a lithium-ion battery, the film maintains the battery temperature below 45 °C under a 5C discharge rate, which is 13 °C lower compared to the bare one. Thus, the composite film provides simultaneous efficient thermal management and flame retardancy, meeting critical safety requirements for high energy density lithium-ion batteries. This work offers a viable pathway for developing multifunctional thermal management materials suitable for advanced battery systems and other electronics.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 3
·139
·
IF 5.4
Yang Ziyin,Xu Tongchang,Tian Zhigao,Kong Yaqi,Qi Chengcheng
ZnO has been used as template to prepare and regulate the structures of functional nanomaterials. Due to the structural characteristics of Zn, its nanomaterials are generally considered inert. This study presents an innovative ZnO-templated synthesis of hollow N-doped carbon materials with atomically dispersed Zn single atoms (Zn SA/NC), where ZnO uniquely serves dual roles as both structural template and Zn precursor. The synthesized Zn SA/NC exhibits remarkable bifunctionality, demonstrating exceptional electrocatalytic activity for H₂O₂ reduction (detection limit: 3.7 µM, sensitivity: 1285.7 µA·mM⁻¹·cm⁻²) and intrinsic peroxidase-like activity for TMB oxidation. Leveraging these properties, we developed a dual-mode H₂O₂ detection platform integrating electrochemical and colorimetric readouts. The work challenges conventional views on Zn’s catalytic inertness by revealing that Zn-Nₓ sites enable efficient charge redistribution, while the hollow architecture enhances mass transport. This strategy bridges the gap between structural control and atomic dispersion in single-atom catalyst design. Graphical
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高影响因子
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