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.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
✓ 已验证
DOI
高影响因子
GREEN CHEMISTRY
·
2026
·
IF 9.2
zonghao xu,Zongyu Guan,Yan Song,Xiran Zhao,Yaodong Yuan,Zhipeng Yan,Junhang Tian,Xueyi Sun,Biwei Xiao,Weidong Zhuang
Direct recycling of spent LiFePO₄ (LFP) cathodes is a sustainable and energy-efficient strategy for recovering valuable materials while preserving the intrinsic olivine structure. Herein, we report a LiI-assisted regeneration approach that achieves electronic structure reconstruction and reinforced Fe–O d–p orbital hybridization, enabling simultaneous repair of structural defects and enhancement of Li⁺ transport kinetics. The reductive I⁻ ions promote Fe³⁺→Fe²⁺ conversion and effectively eliminate Fe–Li antisite defects, while Li⁺ replenishment restores the stoichiometry of degraded LFP. Density functional theory (DFT) calculations reveal that LiI triggers a downward shift of the Fe 3d band center and an upward shift of the O 2p band center, narrowing their energy separation and strengthening Fe–O covalency. These electronic modifications reduce Li⁺ migration barriers and reconstruct continuous Li⁺ transport channels, as further validated by ab initio molecular dynamics simulations. In-situ XRD measurements confirm reduced unit-cell volume fluctuations and enhanced FeO₆–PO₄ framework stability, demonstrating improved structural reversibility during cycling. Benefiting from this coupled structural–electronic reconstruction, regenerated LFP delivers 146.9 mAh g⁻¹ at 1 C and retains 97.4% capacity after 500 cycles, outperforming the spent material. This work proposes a green and low-energy direct regeneration route for cathode materials and provides important theoretical guidance for their efficient repair and regeneration.
✓ 已验证
产品关联
DOI
高影响因子
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.
✓ 已验证
产品关联
DOI
高影响因子
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
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2022
·
IF 8.634
Chao Yuwen,Bingguo Liu,Qian Rong,Libo Zhang,Shenghui Guo
The continuous spread of COVID-19 has produced a large number of abandoned disposable medical masks (DMMs), which have a greater negative impact on the environment and biosafety. In response to this issue, a method for rapid microwave sulfonation , nitrification and oxidation of DMMs was proposed to convert DMMs with low carbonization efficiency into aromatic carbon with good thermal stability , which not only maintained 51 wt% of initial mass at 1000 °C, but also achieved in situ co-doping of S, N and O. Subsequently, porous carbons derived from DMMs were synthesized by self-activation pyrolysis , which avoided consumption of alkali and metal salts in the traditional activation process . It was further found that low pyrolysis temperature was not enough to produce enough active material H 2 and H 2 O to obtain high specific surface area, while increasing pyrolysis temperature could adjust the specific surface area of as-prepared carbon, ranging from 52 m 2 ·g −1 to as high as 890 m 2 g −1 . Thanks to synergistic effect of S, N, and O co-doping and hierarchical porous structure , the first discharge specific capacity of sample synthesized by self-activated pyrolysis at 900 °C was 1459.8 mAh·g −1 at 0.1 C, and the discharge specific capacity retention at 0.5 C after 400 cycles was 52.3%.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Jiliang Ma,Junqiang Zhang,Dongnv Jin,Shuangquan Yao,Runcang Sun
Synchronous photocatalytic water splitting and the reforming of a biomass-derived feedstock to generate hydrogen and high-value-added chemicals make full utilization of the biomass-water-splitting redox reaction; however, limited successes in this regard have been reported. Herein, incompletely polymerized graphitic carbon nitride co-doped with zinc/oxygen atoms (Zn 2 /O@IP- g -CN) was prepared via a step-by-step low-temperature calcination process with the assistance of melamine and zinc phthalocyanine, which successfully resulted in simultaneous photocatalytic water splitting and the reforming of biomass-derived monosaccharides to produce hydrogen (11436.7 μmol g −1 h −1 ) and lactic acid (92.6 %), respectively. Zn 2 /O@IP- g -CN exhibits a fast separation/migration rate and low resistance compared to those of pure CN, resulting in Zn 2 /O@IP- g -CN showing enhanced photocatalytic activity. The hydrogen release rate of 86.8 % and lactic acid yield of 89.0 % were retained compared to initial values when Zn 2 /O@IP- g -CN was reused in 5 th cycles. Poisoning experiments indicated that 1 O 2 , ·O 2 - , ·OH, and h + were all beneficial for lactic acid production.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hao Zhang,Yunxiong Zeng,Xinqing Wang,Xingyu Zhan,Jingcai Xu,Ao Jin,Bo Hong
The fast recombination of electron-hole pairs results in low photoactivity, limiting carbon nitride further application in wastewater purification. To address this issue, regulation of electron configuration via optimizing surface atom properties is a promising strategy for improving the separation of electron-hole pairs. Here, sea-urchin carbon nitride (SUCN-6) with C-v and O-s mediated electronic structures were facile prepared, endowing it with a decrease in transportation resistance of charge carriers and increased activation towards oxygen. Under visible light, the SUCN-6 showed a removal efficiency of ∼ 89% towards tetracycline (TC) in 20 min and no obvious decaying after five consecutive cycles. This TC photodegradation follows a first-order kinetic, and its kinetic constant reaches 0.0908 min −1 , which is 2.35 folds higher than that of pristine carbon nitride. In addition, several crucial factors of practical wastewater purification (such as pH, TC concentration, water sources, inorganic salts, and organic matters) that might affect photoactivity were investigated. Moreover, the degradation pathways of TC and intermediates were detected by an HPLC-MS and electron spin resonance instrument, and a possible photodegradation mechanism over SUCN-6 was elucidated. This study offers new insights into the photocatalysis kinetics and photodegradation mechanism over carbon nitride for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Ming Nie,Lu Wang,Shengmin Lu,Yangguang Wang,Meiyu Zheng,Zhongxiang Fang
The protective effects of three amino acids ( l -phenylalanine, l -tryptophan and l -methionine) on the stability of bayberry anthocyanins were investigated. The anthocyanin stability under constant illumination (5000 Lux, 50 Hz) or in the presence of ascorbic acid were evaluated by degradation kinetic parameters, and the interaction between l -methionine and cyanidin-3-O-glucoside (C3G) in a model beverage system was analyzed using Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance, X-ray diffraction, molecular docking, and molecular dynamics simulation. Results indicated that the three amino acids significantly reduced the degradation rate of bayberry anthocyanins (p < 0.05), with the most effect by l -methionine. l -methionine could bind to C3G via hydrogen bonds and Van der Waals forces. This study suggested that l -methionine could well protect anthocyanin against degradation in the aqueous solution and have the potential to be used as a co-pigment to improve the sensory property and extend the shelf life of anthocyanin rich berry products.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 24
·5270-5276
·
IF 6.569
Shiwei Liu,Jiale Chen,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
The dimensional reduction theory is applied to an A2O–P2O5–Bi2O3 system where P2O5 serves as a binary parent while A2O and Bi2O3 are regarded as dimensional reduction agents. Thus, three novel phosphates ACs5Bi4(PO4)2(P2O7)3 (A = K, Rb and Cs) have been prepared through the high-temperature solution method. Single-crystal X-ray diffraction measurements reveal that they all crystallize in the monoclinic space group P21/c (no. 14) and in their structures, two different kinds of P–O units, i.e. isolated PO4 tetrahedra and P2O7 dimers, are interconnected by Bi–O groups to construct a 3∞[Bi4(PO4)2(P2O7)36−] framework. Note that with the change of cationic size in their structures, the Bi3+ cations also exhibit flexible coordination, i.e. BiO5 and BiO6 polyhedra in KCs5Bi4(PO4)2(P2O7)3 and only BiO6 polyhedra in Cs6Bi4(PO4)2(P2O7)3, suggesting that combining the flexible coordination of Bi3+ cations with phosphates based on dimensional reduction theory is an effective strategy to guide the synthesis of new compounds.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Tiefeng Xu,Lulu Dong,Zhanghao Xu,Nan Li,Wenxing Chen,Wangyang Lu
Co-based hybrid organic–inorganic heterogeneous catalyst was prepared using cobalt tetraaminophthalocyanine (CoTAPc) as precursor via simple one-pot calcination under oxidizing atmosphere, and characterized by X-ray photoelectron spectroscopy, transmission electron microscopy, X-ray absorption fine spectroscopy, etc. The results showed that the oxygen (O) atom was introduced into the Co(II)–N4 structure of CoTAPc, generating the active N–Co(II)–O centers with novel coordination environment around the ion of cobalt. This heterogeneous Co-based hybrid catalyst exhibits high catalytic activity and sufficient stability for the elimination of organic pollutants by H 2 O 2 activation, even in high backgrounds of complex constituents. Moreover, the controllable H 2 O 2 activation was achieved at relatively low H 2 O 2 dosage under mild condition. The possible mechanism of the heterolytic cleavage of O–O bond during H 2 O 2 activation was proposed, and such different cobalt coordination environment facilitated the formation of high active Co(IV) = O species. Besides, the oxidation pathway of substrates was presented according to the intermediates and the final products detected by ultra-performance liquid chromatography/high-definition mass spectrometry and gas chromatography/mass spectrometry, respectively.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）