CHINESE JOURNAL OF POLYMER SCIENCE
·
2014
·Vol. 32
·期 3
·371-376
·
IF 1.42
Cao Jing,Feng Jun-xiang,Wu Shi
Novel conjugated polymers with aza-15-crown-5 as pendant groups, P1 were synthesized by the Sonogashira coupling reaction. The polymer P1 was found to show fluorescence enhancement response towards Ba 2+ . The gradual recovery and turning-point of emission intensity of polymers appeared in the addition of Ba 2+ , which provided good evidence for the fluorescence amplification mechanism of conjugated polymers.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Wei-Yao Yang,Shu-Ting Bao,Sheng-Bo Du,Heng Mao,Zhi-Ping Zhao,Le Sang
Highly efficient HMF synthesis was realized in μPBRs over ACB18-Si-ILs. • HMF (90.8%) or LA (65.2%) was selectively produced in μPBRs within 252 s. • ACB 18 -Si-ILs stably catalyzed fructose conversion to HMF in μPBRs for 1440 min. • Product yields in μPBRs were predicted by an intrinsic kinetic model. • LHHW kinetic analysis identified the surface reaction as the rate-determining step. In this work, acidic ionic liquids (ILs) were immobilized on activated carbon beads (ACB) with a particle size of 0.3 mm (ACB 18 -Si-ILs), and combined with micropacked bed reactors (μPBRs) to achieve continuous and long-term conversion of fructose to 5-hydroxymethylfurfural (HMF). After pretreatment, the specific surface area of ACB reached 1249.4 m 2 /g, and the ionic liquid was chemically bonded to the support, exhibiting good stability. Selective production of HMF and levulinic acid (LA) was achieved through reaction optimization and solvent regulation, achieving a yield of 90.8% HMF or 65.2% LA within 252 s in μPBRs. The space-time yield of HMF and LA were both increased by an order of magnitude compared to traditional reactors, and the HMF yield maintained over 85% after 1440 min continuous operation. A heterogeneous intrinsic kinetic model was established for predicting product yield in μPBRs, with the error controlled within ±15%. Under the intrinsically kinetic controlled regime, the Langmuir-Hinshelwood-Hougen-Watson model was constructed, identifying the catalyst surface reaction as the rate-limiting step. The adsorption constants of fructose and HMF were obtained and the catalyst surface reaction rate was predicted with an error less than ±10%. Download: Download high-res image (167KB) Download: Download full-size image
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Green Energy & Environment
·
2019
·Vol. 4
·期 4
·424-431
·
IF 0
Yangyang Zhang,Xinli Tong,Linhao Yu,Lingwu Meng,Pengfei Guo,Song Xue
The catalytic transformation of furfuryl alcohol and hexose into value-added chemicals have been investigated with a series of polymer-based catalysts including poly(styrenesulfonic acid) (PSS), graphite oxide-doped poly(styrenesulfonic acid) (PSS-GO), and graphite-doped poly(styrenesulfonic acid) (PSS-C). It is found that the selective conversion of furfuryl alcohol to methyl levulinate (MLE) was successfully performed with PSS as the catalyst, in which a 96.4% yield is attained in methanol solvent. Moreover, the efficient dehydration of d -fructose to produce 5-hydroxymethylfurfural (HMF) has also been achieved using PSS-GO as the catalyst, where a 76.5% yield of HMF was obtained in N -methylpyrrodinone solvent. The effects of reaction temperature, time and solvent were investigated. Furthermore, the used catalysts have been respectively characterized by XRD, TG, FTIR, SEM and TEM techniques to reveal the physical properties and structures of these polymeric catalytic materials.
研究领域:
催化化学
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生物质能源
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绿色化学
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有机转化
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高分子材料
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可持续化学
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生物基化学品
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Nanoscale
·
2019
·Vol. 11
·期 34
·15881-15891
·
IF 6.97
Yong Xu,Jun Chen,Ze'en Xiao,Caixia Ou,Weixia Lv,Lihong Tao,Shengwen Zhong
A porous composite electrode composed of diatomite-mixed 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA) is prepared by electrostatic spinning technology. Compared with traditional coated electrodes without diatomite mixing, the obtained composite electrode materials have higher porosity, larger specific surface area and faster lithium ion transport channels, which makes them exhibit better electrochemical performance, such as smaller impedance, higher capacity, and better cycling stability and rate performance. The electrospun diatomite-mixed 1,4,5,8-NTCDA composite (ED-1,4,5,8-NTCDA) electrode shows an initial coulombic efficiency of 77.2%, which is much higher than that of the electrospun 1,4,5,8-NTCA (E-1,4,5,8-NTCDA) electrode without diatomite mixing (63.8%) and the coated 1,4,5,8-NTCA (C-1,4,5,8-NTCDA) electrode (48.3%). Moreover, the ED-1,4,5,8-NTCDA electrode displays an initial discharge capacity of 1106.5 mA h g−1, which is much higher than that of the E-1,4,5,8-NTCDA electrode (546.0 mA h g−1) and the C-1,4,5,8-NTCDA electrode (185.4 mA h g−1). After 200 cycles, the capacity of the ED-1,4,5,8-NTCDA electrode remains at 1008.5 mA h g−1 with a retention ratio of 91.2%, which is also much higher than that of 753.2 mA h g−1 for the E-1,4,5,8-NTCDA electrode and 288.1 mA h g−1 for the C-1,4,5,8-NTCDA electrode. Even at a higher current density of 1500 mA g−1, its capacity remains above 508.9 mA h g−1. The ED-1,4,5,8-NTCDA electrode presents superior performance, which opens up a promising new approach for further utilization of organic materials as electrode materials in rechargeable lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
功能材料
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高影响因子
ACS ES&T Engineering
·
2026
·
IF 6.3
Zhenyu Gu,Jianhai Lu,Huimin Xu,Yemin Zhao,Shan Gao,Qiguang Dai,Xiaole Weng,Zhongbiao Wu
A novel Fe-doped ZSM-5 nanosphere catalyst was synthesized via a complex-assisted dynamic two-stage hydrothermal method using Na2EDTA as a chelating agent, followed by calcination under an inert atmosphere. The resulting material (Fe-ZSM-5EDTA-Ar) featured a hierarchical spherical architecture assembled from nanorods, possessing a high surface area (up to 511 m2/g), hierarchical porosity, and uniform dispersion of Fe species within the zeolite framework. Structural and spectroscopic analyses confirmed the successful isomorphous substitution of Fe2+/Fe3+ with a high proportion into the framework of ZSM-5, which concurrently enhanced structural stability and effectively suppressed iron leaching. Fe-ZSM-5EDTA-Ar demonstrated exceptional efficacy in the heterogeneous Fenton degradation of chlorobenzene (CB) employing H2O2 as the oxidant. This catalyst uniquely integrated high adsorption affinity with outstanding catalytic activity, resulting in complete dechlorination elimination of the target pollutant under optimized reaction conditions. Quenching experiments and electron paramagnetic resonance (EPR) collectively demonstrated that hydroxyl radicals were the dominant reactive oxygen species, driving the degradation process. Furthermore, Fe-ZSM-5EDTA-Ar also exhibited excellent recyclability in multiple cycles with negligible activity and iron loss. This work provides a robust synthesis strategy for designing stable and efficient zeolite-based Fenton catalysts for the remediation of chlorinated organic wastewater.
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高影响因子
Journal of Materials Chemistry B
·
2026
·
IF 6.2
Jiahao Du,Yunyun Sun,Dong Yu,Shengwei Lu,Simin Yu,Mei Wang,Guoqing Zhou,Songxin Xu,Lei Zhang,Yefei Zhu,Longxiang Zhou
Inflammatory bowel disease (IBD) is a refractory gastrointestinal disorder characterized by sustained intestinal inflammation, mucosal barrier dysfunction, and gut dysbiosis. Excess reactive oxygen species (ROS) is a key driver of these pathological processes. Although CeO₂-based nanozymes can scavenge ROS, its clinical application is limited by poor aqueous stability. Here, we developed an oral nanozyme by co-encapsulating ultrasmall CeO₂ nanoparticles and the clinical drug 5-aminosalicylic acid (5-ASA) within liposomes. The resulting formulation (CeLA) exhibited excellent colloidal stability and robust ROS-scavenging activity, and provided marked cytoprotection against oxidative stress in vitro. In a dextran sulfate sodium (DSS)-induced colitis model, CeLA alleviated clinical symptoms, restored intestinal barrier integrity, and suppressed pro-inflammatory cytokine expression. Notably, CeLA also reshaped the dysbiotic gut microbiome by reducing pro-inflammatory bacterial taxa. This multifunctional nanozyme integrates antioxidant, anti-inflammatory, and microbiome-modulating effects, offering a promising therapeutic strategy for IBD.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Ruofei Li,Hao Zhou,Jing Yao,Tiefeng Xu,Gangqiang Wang,Wangyang Lu
The conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) via aerobic oxidation is a crucial step toward transforming biomass into sustainable bio-based energy materials. In this study, a mesoporous Au-CoO x /m-CeO 2 catalyst was prepared using vacuum-assisted in situ self-assembly to realise this conversion. The well-defined mesostructure, as confirmed by transmission electron microscopy and nitrogen adsorption–desorption analyses, significantly enhanced active site accessibility and facilitated reactant diffusion, thereby accelerating the selective oxidation of HMF to produce FDCA. This catalytic system achieved complete conversion of HMF and an FDCA yield of 99.89 ( ± 0.03)% under ambient pressure at 90 °C. Using Au/m-CeO 2 or Au-CoO x /CeO 2 as catalysts under identical conditions, the FDCA yields were limited to 56.8 ( ± 1.9)% and 78.1 ( ± 0.8)%, respectively. The optimal catalyst also demonstrated outstanding durability, retaining 93.9 ( ± 0.7)% FDCA yield after 18 reuse cycles. This remarkable activity was attributed to the integrated Au-CoO x /m-CeO 2 architecture, wherein a synergistic metal–oxide interaction coupled with the ordered mesoporous CeO 2 framework collectively optimised the reaction–diffusion process, driving efficient HMF oxidation. This study therefore provides a new perspective for designing efficient catalysts for the conversion of HMF to FDCA, which is conducive to the conversion of biomass resources.
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Yinghang Kou,Zilong Liu,Zhenyu Wang,You Fu,Mingjie Jia,Yaxin Li,Yinggang Jia,Hong-bin Sun
A 5-Ph-Tet protective layer is engineered on Zn for dendrite-free aqueous zinc-ion batteries. • Strong Zn-tetrazole coordination lowers the desolvation barrier and guides preferential Zn (002) deposition. • The layer suppresses byproduct formation by modulating the interfacial chemical environment. • It enables 3400 h of cycling in a symmetric cell and 5000 cycles in a Zn@5-Ph-Tet||NVO full cell. Constructing an artificial interfacial protective coating on the zinc surface represents a facile yet effective strategy to suppress dendrite growth and parasitic reactions in aqueous zinc-ion batteries. In this work, a protective coating containing 5-phenyl-1H-tetrazole (5-Ph-Tet) was applied onto the zinc anode surface. Owing to its electrochemical properties and a pKa of approximately 4.3, 5-Ph-Tet can buffer local pH variations at the zinc anode interface during the inevitable hydrogen evolution reaction (HER). Furthermore, the abundant zincophilic nitrogen atoms on 5-Ph-Tet coordinate with Zn 2+ , thereby facilitating uniform Zn deposition. Electrochemical evaluations validated the effectiveness of the 5-Ph-Tet protective layer: the symmetric cell exhibited a cycling life of 3400 h under the testing conditions of 1 mA cm −2 and 1 mAh cm −2 (versus only 105 h for Bare Zn), while the Zn||NVO full cell demonstrated excellent cycling stability at 1 A g −1 , remaining free from short-circuiting even after 5000 cycles. This work offers a new strategy for future investigations into anode protection in aqueous zinc-ion batteries.
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高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xu Chen,Weijing Cao,Ziyi Fan,En Zhao,Lang Zhou,Zupeng Chen
AuPd-TCN enables photocatalytic 5-HMF oxidation coupled with H 2 evolution. • Achieving 69.2% DFF yield and 421.9 μmol·g⁻ 1 ·h⁻ 1 H 2 evolution rate within 2 h. • Revealing AuPd-TCN interfacial interactions to promote charge separation and transfer. • Confirming valence-band oxidation and conduction-band reduction coupling by DRIFTS and EPR. The selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF) coupled with hydrogen (H 2 ) evolution offers a sustainable strategy for the high-value conversion of biomass-derived platform chemicals and clean energy production. In this study, tubular carbon nitride (TCN) is first prepared via self-assemble of a supramolecular precursor, followed by the loading of AuPd bimetallic nanoparticles on its surface through an impregnation-reduction method to construct the AuPd-TCN photocatalyst. Under visible-light irradiation for 2 h, AuPd-TCN delivers a DFF yield of 69.2% and a H 2 evolution rate of 421.9 μmol·g −1 ·h −1 , markedly outperforming pristine TCN (22.4%, 17.7 μmol·g −1 ·h −1 ), Au-TCN (39.8%, 204.2 μmol·g −1 ·h −1 ), and Pd-TCN (48.6%, 255.4 μmol·g −1 ·h −1 ). Structural and photoelectrochemical characterizations reveal that Au and Pd form bimetallic nanoparticles on TCN with strong interfacial electronic interactions that promote the separation and transfer of photogenerated charge carriers. In situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) confirms that the hydroxymethyl group of 5-HMF is selectively oxidized to an aldehyde group, while the furan ring skeleton remains intact during the reaction. Active species trapping experiments and electron paramagnetic resonance (EPR) analysis further demonstrate that photogenerated holes (h + ) and electrons (e - ) are the primary active species in this coupled reaction: h⁺ drives the selective oxidation of 5-HMF to DFF, while e - reduces H⁺ to H 2 on the AuPd bimetallic nanoparticles surface. This study provides an effective strategy for simultaneous biomass-derived chemical valorization and clean hydrogen production. Download: Download high-res image (147KB) Download: Download full-size image
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 17
·3084
·
IF 5.1
Shuyi Wu,Yanji Shi,Qihao Zheng,Jianle Yuan,Yilin Xiang,Yining Jiang,Jiaxing Zhang,Ajuan Zhou,Xinwen Guo
Low-cost synthesis of ZSM-5 zeolite is critical for its large-scale industrial application. Herein, a seed-assisted low-template hydrothermal route was employed to fabricate ZSM-5 zeolites. The regulatory effects of gradient crystallization temperatures on the crystallization kinetics, morphology, pore structure and acid properties of ZSM-5 were systematically investigated, and the structure–activity relationship linking temperature-driven evolution and catalytic behavior in benzene alkylation with methanol was established. The results reveal that increasing the crystallization temperature shortens the amorphous induction period, facilitates framework aluminum (Al) incorporation and increases the concentration of Brønsted acid sites. Meanwhile, crystallization temperature modulates the specific surface area and intercrystalline mesopore volume, thereby tuning the accessibility of acid sites and the mass transfer efficiency of reactants and products. The sample synthesized at a moderate temperature of 170 °C achieves an optimal balance between textural properties and acid concentration. Benefiting from its large specific surface area, abundant intercrystalline mesopores and high Brønsted acid concentration, the catalyst affords a benzene conversion of 69.1% and a methanol utilization of 79.1%, and maintains stable operation over 135 h on stream. The temperature-dependent regulation insights uncovered in this work facilitate low-cost synthesis of ZSM-5 and rational design of high-performance catalysts for aromatic alkylation.
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PubMed
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2026
·
IF 3.2
Dongying Qin,Xunlin Chen,Keyan Pan,Zixuan Tang,Zhongzheng Chen,Xiaorong Lin,Yuanyuan Zhang
5-Hydroxymethylfurfural (5-HMF), a common by-product of thermal-processed foods, poses a potential risk of intestinal toxicity upon ingestion. However, its underlying toxic mechanisms remain incompletely understood. In this study, we investigated the effects and potential molecular pathways of 5-HMF using normal human intestinal epithelial cells (HIEC-6). The results showed that 5-HMF inhibited the proliferation of HIEC-6 cells in a concentration-dependent manner and induced apoptosis possibly through both the death receptor and mitochondrial pathways, as evidenced by increased activities of caspase-8 and caspase-9. 5-HMF increased intracellular reactive oxygen species (ROS) levels by 1.42 to 2.12 fold, disrupted antioxidant enzymes activities, and increased malondialdehyde content, indicating oxidative damage. Meanwhile, 5-HMF upregulated the mRNA expression of the pro-inflammatory cytokines TNF-α and IL-6 and downregulated the mRNA and protein expression of key tight junction proteins ZO-1, Occludin and Claudin-1, indicating promotion of inflammation and impairment of epithelial barrier. 5-HMF also altered the mRNA expression of MAPK pathway-associated genes and NF-κB , indicating a possible correlation between this signaling cascade and the toxic effects of 5-HMF. Collectively, these findings provide a theoretical foundation for the risk assessment of dietary 5-HMF exposure and for future mechanistic studies on the role of MAPK signaling in 5-HMF-induced intestinal toxicity.
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PubMed
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Tengxin Ren,Lei Yang,Zicheng Li,Zhiping Wu,Na Liu,Caixia Zhu,Minghui Tan,Lishu Shao,Hao Chen,Linlin Zhao,Noritatsu Tsubaki
5-Hydroxymethylfurfural (HMF) is an important biomass-based platform molecule, its oxidation product, 2,5-furandicarboxylic acid (FDCA), can be used to produce polyethylene furanoate (PEF) that replace petroleum-based compound polyethylene terephthalate (PET). At present, the development of low-cost and efficient catalytic systems remained a significant challenges. In this work, ZSM-5 and SBA-15 zeolites were used as a composite support with micro-mesopores structure through a simple and efficient mechanical treatment, and then Co–Mn bimetallic sites were loaded on the composites by co-precipitation methods. These catalysts exhibited showed different morphology, distribution of active components, and micro-mesopores structure by adjusting Co/Mn molar ratio, loading amounts and calcination temperature. The effects of pore structure, metal composition and distribution, and electronic structure on the catalytic conversion of HMF were studied. Specially, the valence state and content of Co and Mn active species had a significant impact on the catalytic performance of HMF, and we found that the content of Mn 4+ directly affected the selectivity of FDCA, and with a positive correlation between them into a certain extent. Under optimized conditions, 15Co 2 Mn-ZS-21-400 catalyst achieved 92.2% HMF conversion and 81.7% FDCA yield. Its order micro-mesoporous structures provided rapid reaction kinetics, and the synergistic effect of the bimetallic sites enhanced the catalytic activity. Mechanism study revealed that the Co and Mn species were coordinated through electron transfer during the redox process, thereby enabling the cyclic transformation between Co 3+ and Co 2+ , as well as Mn 4+ and Mn 3+ , and then gradually oxidize HMF into FDCA. In addition, 15Co 2 Mn-ZS-21-400 maintained excellent activity after five cycles, the conversion and yield kept at 89.2% and 79.1%, respectively. This work provided a new strategy for developing highly selective and stable thermal catalysts for HMF to FDCA.
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高影响因子
危险品化学品经营许可证（带存储）