APPLIED CATALYSIS A-GENERAL
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2025
·
IF 4.8
Jin Guo,Xueying Bai,Xianquan Li,Jifeng Pang,Lele Feng,Yujia Zhao,Yang Su,Shimin Liu,Chaoqian Liu,Mingyuan Zheng
Copper(Cu)-based catalysts are highly promising candidates for ethanol dehydrogenation owing to their exceptional activity in cleaving O-H and C-H bonds. Nevertheless, their widespread application is hindered by challenges such as rapid deactivation and complex preparation procedures. Herein, inspired by the deactivation mechanism of Cu/MFI (silicalite-1) catalysts, two strategies, i.e., using mixed solvents for impregnation and enriching silanol nests of MFI to anchor Cu particles, were used to synthesize Cu/MFI-R catalysts with high stability and activity. The mixed solvent approach reduces the surface tension of solvents, enhancing the uniform dispersion of Cu over the hydrophobic surface of MFI. Subsequently, a MFI-R support with abundant silanol nests was synthesized via optimizing hydrothermal conditions, as confirmed by reaction results and characterizations of FT-IR, UV-Vis and solid NMR. By combining these strategies, Cu/MFI-R catalysts were synthesized for ethanol dehydrogenation, achieving > 90 % ethanol conversion and 95 % acetaldehyde selectivity over the 600 h time on stream test. This work provides a very promising scalable approach for the design of stable Cu-based catalysts in hydrogen-related reactions.
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MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
He Cui,Chen Li,Raz Muhammad,Yuanyuan Wang,Zhihua Qian,Kaixin Song
In this study, (1- x )Ni 0.5 Zn 0.5 Fe 2 O 4 - x K 2 MoO 4 ((1- x )NZO- x KMO) composite ceramics were prepared through a cold sintering process. The research aimed to investigate the effect of different cold sintering conditions on the densification, phase, and magnetic/dielectric properties of the composites. The 0.6NZO-0.4KMO composite, prepared at 180 °C for 30 min under an applied pressure of 500 MPa, and utilizing 10 wt.% deionized water as a solvent, exhibited a high dielectric constant and permeability. SEM analysis revealed that the two phases were uniformly mixed, and the microstructure was dense. The cold sintering mechanism proposed for (1- x )NZO- x KMO composites suggests that the 'dissolution-precipitation' mechanism plays a key role in driving the densification of the ceramics.
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MATERIALS LETTERS
·
2014
·
IF 2.269
Shanshan Ji,Peixia Yang,Jinqiu Zhang,Ye Lian,Jie Zhang,Maozhong An
BMIm-OTF (1-Butyl-3-methylimidazolium trifluoromethanesulfonate) ionic liquid was used for the first time to prepare Cu 1.00 In 0.83 Ga 0.23 Se 1.64 thin films . The standard CIGS sample was calibrated using its inductively coupled plasma optical emission. The morphological properties were detected using scanning electron microscopy . The band gap of the CIGS thin film was approximately 1.55 eV, as measured using UV–visible absorption spectra . The carrier concentration and average Hall coefficient of the CIGS thin films were 2.741×10 20 cm −3 and 2.277×10 −2 cm 3 /C, respectively.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2023
·
IF 5.2
Lei Wu,Mengmeng Zhao,Qiuyan Ye,Xian Xin,Kun Zhang,Yongnan Chen,Ziwei Wang
Electrochemical synthesis of polymer/MOF composite membranes holds great potential for practical applications, yet the preparation of flexible and dense MOF layers remains a challenge, which is crucial for achieving practicality. Herein, a novel ultra-flexible polyethersulfone (PES)/Cu-based metal–organic framework (HKUST-1) composite membrane has been fabricated via an electrochemical synthesis method. Various reaction conditions, including voltage, stirring speed, and reaction time, were systematically investigated to elucidate their influence on crystal growth and the resulting membrane uniformity. The characterization results showed that high voltage and moderate stirring as well as are conducive to obtaining uniform fine crystals. Additionally, a relatively extended reaction time is advantageous for achieving a more continuous and denser MOFs membrane with outstanding flexibility. The optimized membrane possesses an excellent separation flux (2.81 × 10 3 ±32 L m −2 h −1 ·bar −1 ) and efficiency (99.7 ± 0.3%) for n -hexane/water mixtures, as well as excellent photodegradation efficiency (>99%) for methylene blue (MB). Remarkably, the optimized membrane exhibits remarkable scalability and stability, maintaining superior separation performance even after being rolled up 10 times with a curvature of 200 m −1 . This suggests that it has great potential for practical applications in complex environments.
研究领域:
材料科学
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环境工程
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膜技术
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电化学
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纳米材料
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Frontiers in Chemical Engineering
·
2026
·
IF 2.6
Gideon Abaidoo Ocran,Bosong Zhang,Yi Zuo,Huali Tan,Gudan Li,Hong Yang,Chunshan Song,Xinwen Guo
The epoxidation of allyl alcohol with H2O2 over titanium silicalite-1 (TS-1) is an environmentally friendly route for producing glycidol. However, the catalytic activity and stability of TS-1 is not satisfactory. In this study, strip-shaped TS-1 was hydrothermally treated by TPAOH solution, change theTi coordination states and diffusion property, thereby enhancing its catalytic performance. The influences of TPAOH concentration and treating time on the physical chemical property and catalytic performance were studied systematically. It was found that the SiO2 agglomerant was dissolved and crystallized during the treatment, resulting in an increased Si content on the external surface. The tetrahedrally coordinated Ti was transformed to pentahedrally and octahedrally coordinated Ti, which possess higher catalytic activity for selective oxidation. The treatment also leads to the formation of cavities in the TS-1 crystals, which can shorten the diffusion pathway of substates and improve the diffusion property. Both the chemical property and microstructure enhance the catalytic activity for allyl alcohol epoxidation.
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Advanced Science
·
2026
·
IF 14.1
Honggang Su,Huimin Pan,Yaqiang Liu,Wei Wang,Yang Jiao,Yumo Hang,Xiahe Huang,Yong E. Zhang,Yuhang Chen,Mei Ding,Xun Huang
Lipid droplets (LDs) are central to cellular energy homeostasis and lipid metabolism. While LD-associated proteins are known to regulate LD dynamics and function, their roles in LD transport and their broader cellular significance remain poorly understood. In this study, we identify lipid droplet-localized spindle apparatus coiled-coil protein 1 (SPDL1-L) as a key regulator of intracellular LD transport. SPDL1-L localizes to LDs through the synergistic action of its hydrophobic region and nearby basic residues. SPDL1-L expression promotes LD clustering at the microtubule-organizing center (MTOC) and the formation of donut-shaped (toroidal) nuclei during cell division. SPDL1-L-mediated LD clustering is likely through dynein-mediated minus end transport. LD clustering activity is diminished when the LD targeting or dynein binding function of SPDL1-L is impaired. Together, our findings provide new insights into the mechanisms governing LD dynamics and their impact on cellular organization.
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PubMed
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.2
Yinzhi Wang,Yunqing Zhou,Zhenzhen Wu,Hualiang Li,Chuanqi Shi,Siyi Bao,Jianhua Yan,Hao Zhang
The pyrolysis mechanism of polyethylene (PE) remains elusive owing to its inherent complexity and the difficulty in identifying reactive intermediates. In this work, 1-hexadecene was employed as a model compound and pyrolyzed in a custom low-pressure flow tube reactor. The pyrolysis intermediates and products were detected via in-situ electron ionization molecular beam mass spectrometry (EI-MBMS) across 300–980 °C. A total of up to 59 species were identified, including primary pyrolysis intermediates (PPIs), primary pyrolysis products (PPPs), secondary reaction intermediates (SRIs), and secondary reaction products (SRPs), with 16 key species quantified. Three distinct pyrolysis stages were revealed: at the initial stage (320–680°C), 1-hexadecene underwent limited decomposition, dominated by β -scission near the double bond, producing mainly unsaturated hydrocarbons, while hydrogen transfer reactions exhibited pronounced olefin selectivity. At the stage with increasing temperature (680–880°C), the radical concentration increased sharply, promoting extensive β -scission and the onset of secondary reactions. Aromatic precursors such as cyclopentadiene emerged, accompanied by intensified dehydrogenation. At the final stage (880–980°C), the reactant was nearly depleted, and olefins underwent deep cracking. Both Diels–Alder reactions and the chain reaction hydrocarbon aggregation (CHRCR) mechanism jointly drove aromatization, with the propargyl radical (C 3 H 3 ) serving as a key intermediate for the first aromatic ring formation. This study systematically elucidates the pyrolysis pathway of 1-hexadecene from radical initiation to aromatic and small-molecule formation, highlighting the temperature-dependent transition from primary bond scission to extensive dehydrogenation and aromatization. The findings offer fundamental insights for accurate modeling and optimization of polyethylene pyrolysis in chemical recycling.
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Journal of Engineered Fibers and Fabrics
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2021
·
IF 1.573
Ying Han,Jiaxun Li,Bobing He,Lixin Li
Environmental challenges, especially dye wastewater produced by printing and dyeing industry, pose a serious threat to global public health, and it is an urgent problem to realize harmless treatment of dye wastewater. Here, the combination of covalent organic framework materials (TpPa-1) and biological matrix materials (CF) was explored for the adsorption of dyes for the first time. The functional ACF-TpPa-1 composite adsorption materials were successfully prepared with collagen fiber (CF) made of leather waste as matrix, ethylenediamine (EDA) and covalent organic framework material (TpPa-1) as modified raw materials. It’s structure and properties were characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM). The experimental results showed that ACF-TpPa-1 had an adsorption capacity of 257.98 and 449.54 mg/g for acid fuchsia and reactive blue 19, respectively. It also showed excellent adsorption/desorption performance and repeatability after six cycles. As a collagen-based dye adsorbent with pH response, it has potential application prospects in the treatment of dye wastewater.
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CERAMICS INTERNATIONAL
·
2016
·Vol. 43
·期 1
·1552-1557
·
IF 2.758
Hua Lan,Shangshu Qian,Qin Wang,Lei Yan,Haoxiang Yu,Peng Li,Nengbing Long,Miao Shui,Jie Shu
In order to further expand the application of lithium titanate anode materials for lithium ion batteries (LIBs), a series of Sr 1−x Na 2x Li 2 Ti 6 O 14 (x=0, 0.25, 0.5, 0.75, 1) have been synthesized by the solid-state method. The structure, morphology and their electrochemical properties have been investigated by X-ray diffraction (XRD), scanning electronic microscope (SEM), high-resolution transmission electron microscope (HRTEM), galvanostatic charge-discharge tests and electrochemical impedance spectroscopy (EIS) measurements. Electrochemical analysis suggests Sr 0.5 NaLi 2 Ti 6 O 14 to show the better cycling stability, delivering a charge capacity of 184 mA h g −1 at the current density of 50 mA g −1 for the first cycle, and to exhibit reversible capacity of 176.8 mA h g −1 after 50 cycles corresponding to 0.0782% capacity decrease per cycle. Besides, Sr 0.5 NaLi 2 Ti 6 O 14 also has the highest lithium-ion diffusion coefficient among all the examined samples.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Ming Jiang,Xueyu Man,Moya Yang,Qiwei Yan,Haijuan Wu,Feng Yang,Youhuan Wei
DNA serves as the primary target for numerous metal complexes in suppression tumor cell proliferation, and Poly ADP ribose polymerase-1 (PARP-1) is critical for DNA repair. In this study, benzothiazole hydrazone was used as a framework to design and synthesize a series of Cu(II) complexes (Cu1-Cu3), which functions as novel PARP-1 inhibitors. These Cu(II) complexes not only effectively inhibited the proliferation of a panel of tumor cells (IC 50 range: 0.51–5.37 μM) but also exhibited potent PARP-1 inhibitory activity (IC 50 range: 0.45–1.52 μM). Notably, complex Cu3 had the most potent activities, exhibiting strong cytotoxicity against T98G cells (IC 50 = 0.51 μM) and significant PARP-1 inhibition (IC 50 = 0.45 μM). Additionally, Cu3 effectively inhibited the migration of T98G cells. Mechanistic studies revealed that Cu3 generated excessive reactive oxygen species (ROS), induced DNA damage, exacerbated DNA double-strand breaks by inhibiting PARP-1 activity, and promoted apoptosis in tumor cells via the mitochondrial pathway.
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Regenerative Therapy
·
2026
·
IF 4
Yi Zhang,Qi Fang,Xiao Yang
Introduction 3D-printing implants have attracted increasing attention for enhancing the regeneration of various wound types. The rigidity of traditional 3D printing materials limits their applicability in skin wound repair. In addition, improving the bioactivity of polymeric materials remains an urgent challenge to be addressed. Insulin-like growth factor-1 (IGF-1) is widely recognized for its efficacy in skin wound repair. However, the potency of IGF-1 in wound regeneration is limited by its unstable binding to the implants. Methods In this study, A phase inversion-based deposition modeling 3D printing technique was employed to construct flexible poly(lactic-co-glycolic acid) (PLGA) scaffold. Additionally, a novel 3D-printing flexible skin implantation functionalized with bioorthogonal IGF-1 (DA-IGF-1) was fabricated. The adhesion, proliferation and relative mRNA expression of cells on PLGA scaffold were assessed. Meanwhile, a full-thickness skin defect regeneration model was established on the rat back to evaluate the wound repair efficacy of the implanted scaffolds. Results The DA-IGF-1 exhibited outstanding binding ability on the scaffold. The resulting PLGA flexible scaffold modified with DA-IGF-1 showed significantly enhanced hydrophilicity and biocompatibility compared with the control group materials ( p < 0.05). The expression of wound regeneration related genes was also upregulated significantly in the DA-IGF-1 group ( p < 0.05). In vivo study indicated that bioactive implants effectively promoted healing and neovascularization of full-thickness skin defects in rats. Conclusion These results demonstrated that the 3D-printing flexible PLGA scaffold modified with bioorthogonal IGF-1 holds great potential for application as a novel therapeutic strategy for wound regeneration.
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Cell Host & Microbe
·
2026
·Vol. 34
·期 6
·1000-1017
·
IF 23.2
Liang Bian,Yang Cai,Yuan Zhang,Ling Shen,Huijuan Wang,Feng Gao,Ningbo Cai,Wenbo Chen,Conghui You,Yurui Yang,Fang Wang,Yonggui Yuan,Bing Han,Honghong Yao
Despite widespread clinical use of glucagon-like peptide-1 receptor (GLP-1R) agonists for metabolic disease, their neuropsychiatric effects remain poorly understood and controversial. Here, we demonstrate that liraglutide alleviates depression through a gut-brain pathway that operates independently of GLP-1R. Using both pharmacological and genetic approaches, we demonstrated that liraglutide retained antidepressant efficacy in GLP-1R antagonist-Exn9-treated mice or in Glp1r −/− mice, whereas gut microbiota depletion abolished its effects. Multi-omics analyses revealed that liraglutide increased the abundance of Lactobacillus delbrueckii , which in turn restored the levels of the endocannabinoid 2-arachidonoylglycerol (2-AG). The elevation of 2-AG mediated the antidepressant effects by normalizing excessive neuronal activity in emotional processing brain regions. Importantly, fecal microbiota transplantation from liraglutide-treated mice or Lactobacillus delbrueckii colonization replicated the antidepressant effects. These findings uncover a non-canonical mechanism of action for GLP-1 analogs, highlighting a specific microbiota-endocannabinoid metabolic pathway as a potential therapeutic target for depression.
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