ACS Applied Polymer Materials
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2024
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IF 4.4
Qianqian Yu,Haijun Wang,Chunlei Yuan,Tong Wang,Chao Yan
Due to the limitation of the intrinsic dielectric constant, the energy storage density of PVDF polymers cannot meet the needs of electronic materials. In this regard, this work focuses toward enhancing the dielectric and energy storage performance of PVDF by preparing PVDF nanocomposites impregnated with sepiolite modified with cetyltrimethylammonium bromide (CTAB@Sep) and carboxylated carbon nanotubes (C-MWCNTs). The results show that CTAB@Sep nanofibers can serve as efficient nucleation agents for γ-PVDF crystals. Furthermore, Sep nanofibers modified with CTAB can significantly promote the dispersion of C-MWCNTs through the electrostatic adsorption effect and then block the conductive path, therefore improving the dielectric and energy storage properties of PVDF-based composites. The dielectric constant of PVDF/CTAB@Sep/C-MWCNTs composites increases by 8 times compared with that of pure PVDF at 1 kHz, while the loss remains at only 0.08. Under an electric field of 110 kV·mm–1, the discharge energy density is 4.03 J·cm–3, and the energy storage efficiency reaches 81.85%. Therefore, this work provides an alternative strategy for preparing high-performance polymer-based energy storage materials under low field strength.
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高影响因子
VACUUM
·
2024
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IF 3.8
Zuhong Ji,Yunfei Sun,Xiaodong Guan,Yang Zhou,Junchao Qian,Feng Chen
In this work, the La substitution of iron and replacing the oxygen with fluorine are both adopted to expectantly enhance the rate performance and structure stability of LiFePO 4 during working. The characterizations of X-ray diffraction, scanning electron microscope , transmission electron microscope, charging-discharging tests, electrochemical impedance spectroscopy and safety tests are used to investigate the influences of La 3+ and F − doping on the LiFePO 4 . The results indicate the cathodes after La 3+ doping not only deliver the larger lattice parameters and unit cell volume to broaden the lithium ions migration pathway and accelerate the Li + diffusion speed, but also strengthen the whole bond energy of LiFePO 4 owing to the high bond energy of La–O. In addition, the F replacement of O could increase the length of Li–O bonds and decrease the length of P–O bonds, further be helpful to enhance the Li + diffusion between LiFePO 4 phase and FePO 4 phase due to the weakening of Li–O bonds. Finally, the La 3+ and F − co-doped cathode delivers the superior discharge capacity of 139.3 mAh g −1 at 5C high rate and 127.2 mAh g −1 at −20 °C, with the high discharging capacity of 160.1 mAh g −1 after 100 cycles at 45 °C.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2024
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IF 11.2
Xin Yang,Lijie Zhong,Songxin Ye,Dequan He,Shuxian Yuan,Huixin Li,Yuting Ma,Xiaocheng Mo,Shiyu Gan,Li Niu
Selective electrocatalysis of two-electron oxygen reduction reaction (2e – ORR) has been recognized as a sustainable and on-site process for hydrogen peroxide (H 2 O 2 ) production. Great progress has been achieved for 2e – ORR in alkaline media. However, it is challenged by insufficient activity and selectivity of the catalysts in acidic electrolytes. Herein, we report sulfur-poisoned PtNi/C catalysts (PtNiS x /C) that could regulate ORR from the 4e – to 2e – pathway. The identified PtNiS 0.6 /C offers high activity in terms of onset potential of ∼0.69 V (vs. RHE) and ∼80 % selectivity. The mass activity is also comparable and outperforms representative Pt-based precious and transition-metal-based catalysts. In addition, it is interestingly found that the Faradaic efficiency further increased to 95 % during the long-term electrolysis test due to Ni atom surface migration. The electrochemical production of the H 2 O 2 system was applied to the electro-Fenton process, which has realized the effective degradation of organic pollutants. This work offers a strategy by sulfur poisoning PtNi/C catalyst to realize Pt-based 2e – ORR active catalysts to electrolysis of H 2 O 2 in acidic media.
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Journal of the Iranian Chemical Society
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2025
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IF 2.3
Wang Liping,Tao Xin,Ruan Yuxian,Yu Ying,Wang Zhijuan,Ming Yingchun
Photocatalytic water splitting has emerged as a pivotal strategy to tackle global energy crises and environmental degradation by producing clean hydrogen. In this study, a novel Cu 2 O/CuO/C composite photocatalyst was prepared from cupric nitrate trihydrate and 1,3,5-benzenetricarboxylic acid via the two-step solvothermal-calcination method as the photocatalyst for hydrogen evolution. Advanced characterization techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), transient photocurrent responses, electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), and Mott-Schottky test, confirmed the composite's excellent visible and near-infrared light absorption and Z-scheme heterojunction architecture. Its remarkable performance originates from the effective p-n heterojunction formed between Cu 2 O and CuO. Upon a 300 W xenon lamp (350 < λ < 780 nm) illumination, photogenerated electrons and holes are produced in Cu 2 O and CuO, respectively. Electrons from the conduction band (CB) of CuO migrate to the valence band (VB) of Cu 2 O, recombining with holes. This mechanism not only enhances charge separation and extends carrier lifetime but also preserves the strong reducing capability of Cu 2 O, significantly boosting photocatalytic activity. The composite achieved a hydrogen production rate of 511.07 μmol/(g h). Notably, it retained stable performance over three consecutive cycles without significant activity loss, demonstrating robust durability. These findings highlight the potential of Cu 2 O/CuO/C Z-scheme heterojunctions as efficient, stable photocatalysts for sustainable hydrogen evolution.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Ming Yue,Yanzhe Sheng,Xilin Wang,Yanhe Xiao,Baochang Cheng,Shuijin Lei
Two-dimensional (2D) layered NiPS 3 has drawn considerable attention as a promising anode candidate for alkali-ion batteries, boasting tunable electronic configurations and high theoretical capacity (∼1296.8 mAh g −1 ). However, two fundamental challenges impede its practical application: irreversible nanosheet restacking during synthesis seriously compromising Na + ion diffusion, and structural collapse during cycling causing catastrophic capacity fade. Addressing these limitations, we proposed a metal–organic framework (MOF)-mediated structural transformation strategy to construct hierarchical hydrangea-like NiPS 3 /C microspheres through carbonization and phospho‑sulfurization of Ni-BPDC (BPDC = 4,4′-biphenyldicarboxylic) precursor. The unique architecture manifested multiple advantageous features: (i) randomly oriented NiPS 3 nanosheets ensuring abundant electrochemical active sites and efficient electrolyte permeation; (ii) interconnecting conductive carbon networks enabling ultrafast electron transport; and (iii) spatially distributed carbon nanoparticles helping accommodate volume changes. Benefiting from these synergistic effects, the developed NiPS 3 /C electrode delivered outstanding electrochemical performance, including high specific capacity (1107.8 mAh g −1 at 0.1 A g −1 ) and superb cycling stability (98.2% capacity retention after 1000 cycles at 5.0 A g −1 ). Through in-situ / ex-situ structure diagnostics, we decoded the dynamic phase evolution during sodiation/desodiation, revealing a conversion-alloying mechanism. This work established a general strategy for designing high-performance MOF-derived anode materials for energy storage systems.
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PubMed
高影响因子
FREE RADICAL BIOLOGY AND MEDICINE
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2025
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IF 8.2
Lin Wang,Zhiqi Cao,Zhaochen Wang,Zhenni Zhang,Juan Liu,Weiwei Wu,Juncheng Huang,Lei An,Jianhui Tian,Guangyin Xi
It is widely accepted that the poor quality of in vitro -produced (IVP) embryos becomes one of the most intractable issues currently limiting the outcomes of human assisted reproductive technology (ART). Although diverse molecules and pathways may be involved in this process, strategies to optimize culture conditions for the improvement of embryo development potential and the relevant mechanisms remain underexplored. Here, we demonstrate that the supplementation of C-type natriuretic peptide (CNP), a potential embryokine present in the oviduct, can improve the blastocyst formation rate and embryo quality, as evidenced by an increased total cell number and inner cell mass (ICM) cells, elevated embryonic cell proliferation, and reduced embryonic cell apoptosis. RNA-sequencing analysis suggests that CNP may regulate biological processes related to lipid metabolism and redox homeostasis in early embryos. Furthermore, our results reveal that CNP significantly reduces lipid droplet content, fatty acid storage, and the expression of lipogenesis-related genes. Notably, we show that CNP alleviates the elevated reactive oxygen species (ROS) levels and lipid peroxidation in in vitro embryos. These findings demonstrate that CNP supplementation is a feasible and effective approach to prevent deterioration in embryo quality and improve developmental potential by inhibiting excessive lipid droplet accumulation and elevated oxidative stress in embryos. Collectively, our study not only provides new insights into understanding the crosstalk between early mammalian embryos and the maternal reproductive tract but also presents a promising strategy for improving the success rate of human ART.
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高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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2024
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IF 5.8
Shuang Wang,Huihui Zhang,Chunyan Yu,Yue Liu,Yanju Lu,Lu Li
In this study, Co-Corrin/C catalysts with corrin active skeleton were prepared by pyrolysis under anaerobic conditions using vitamin B12 (VB12) as a precursor and activated carbon with rich mesoporous structure as a carrier. The Co-Corrin/C catalyst was applied to the oxidative cleavage reaction of lignin, showing a 92.74 % breakage of β-O-4 bonds. Density functional theory (DFT) calculations indicate that the low energy gap difference of Co-Corrin/C promotes electron transfer between Co and O. Meanwhile, the pyrrole ring in the corrin structure will be adsorbed and bonded to oxygen, which promotes the generation of large amounts of oxygen free radicals. The C α -OH bond in the lignin aliphatic chain is oxidized to C α =O bond under the action of oxygen radicals, which reduces the dissociation energy of the β-O-4 bond and significantly improves the oxidation efficiency. Cycling experiments proved that Co-Corrin/C has good stability.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Jiajun Zhang,Yuxuan Xie,Fanzhen Meng,Jingyu Xu,Xing Wang,Chao Liu,Boyu Du,Shangru Zhai,Shuangxi Nie
Developing biomass-based triboelectric films with excellent robust and superior tough is crucial for realizing next-generation green, sustainable and flexible wearable sensors. However, simultaneously achieving highly robust and superior tough in biomass-based triboelectric films remains a significant challenge. In this study, inspired by natural creatures, particularly spider silk, based on the structural properties of catechol lignin (C-lignin, CL) and the synergistic effects of nano-confinement and solvent-induced, the robust and tough recyclable C-lignin-based triboelectric films (CNT/CL/PVA film, CCLPF) with a multi-scale reinforcement network was successfully constructed. The prepared lignin-based films exhibited high tensile strength (43.1 MPa, 816%), excellent fracture toughness (512.3 MJ m −3 ), outstanding energy dissipation efficiency (94.9%), superior antibacterial properties, significant antioxidant capacity, and stable triboelectric output performance (245.1 V and 7500 cycles). Notably, a self-powered sensor array is also designed that could accurately perceive pressure distribution changes of different objects, thereby meeting diverse application demands and ultimately providing important technical pathways for the development of wearable devices and human-machine interaction systems. In summary, this study not only offers a novel solution to the conflict between robust and tough in biomass-based triboelectric films but also opens new avenues for the extensive application of lignin resources in flexible electronics and self-powered sensing technologies.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yanxu Wang,Lijia Huang,Tian C. Zhang,Yan Wang,Shaojun Yuan
Ammonia gas (NH 3 ) is a notorious malodorous pollutant with detrimental effects on environment and human health. Removing NH 3 through photocatalytic oxidation remains a challenging task due to unclear reaction mechanisms. In this study, DFT simulation results revealed that C doped TiO 2 could extend the photo-response range to the visible region, but the introduction of deep impurity levels was found to accelerate photogenerated carrier recombination. Fortunately, the rational doping of Mo was found to mitigate this negative effect. Accordingly, Mo, C co-doped TiO 2 was synthesized via a facile low-temperature calcination process, resulting in unique band structure that enhanced the photocatalytic oxidation of NH 3 . Notably, in-situ DRIFTS and DFT results demonstrated that the gradual reaction of NH 3 adsorbed on Mo atoms with oxygen species through the N 2 H 4 mechanism, promoting the formation of N 2 . These findings offer insights into the design of efficient photocatalysts for NH 3 removal under visible light, and present a promising technology for indoor air pollution control.
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高影响因子
Frontiers in Pharmacology
·
2025
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IF 4.8
Jihong Bi,Yan Li,Lin Lu,Tingting Yin,Shaohua Mao,Run Zhang,Juan He,Xing Ni,Kai Wang,Jirui Bi
Objective: To investigate the protective effects of luteolin on ALI induced by lipopolysaccharide (LPS) in male mice and to explore the underlying mechanisms.Methods: A two-sample Mendelian randomization (MR) analysis was conducted to assess the causal relationship between hepatocyte growth factor (HGF) and acute respiratory distress syndrome (ARDS). Network pharmacology analysis was employed to identify herbs that mitigate inflammation and apoptosis by upregulating HGF expression and to determine the hub active ingredients. These findings were subsequently validated through in vivo experiments using an LPS-induced ALI mouse model. Lung histopathological examination, enzyme-linked immunosorbent assay, and Western blot analysis were performed to evaluate relevant biomarkers of inflammation and apoptosis.Results: The MR analysis demonstrated a causal effect of HGF on ARDS (IVW: β = −1.120, OR = 0.326, 95% CI = 0.116–0.916, P = 0.033). Among herbs associated with upregulating HGF expression, Salvia miltiorrhiza Bunge is involved in the negative regulation of apoptotic process and positive regulation of cell population proliferation. Luteolin was identified as the hub active ingredient extracted from S. miltiorrhiza Bunge. In LPS-induced ALI mice, luteolin significantly alleviated histopatholocial damage, inflammation, and apoptosis in the lungs. However, these protective effects were abrogated by c-Met inhibition.Conclusion: Luteolin attenuates inflammation and apoptosis in the lungs of LPS-induced ALI mice via activation of the HGF/c-Met pathway.
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高影响因子
ACS Nano
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2022
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IF 18.027
Yujun Zhang,Shenghua Ye,Min Gao,Yong Li,Xuan Huang,Jun Song,Hong Cai,Qianling Zhang,Junmin Zhang
Heterogenization of homogeneous catalysis through supported single-atom catalysts (SACs) provided a feasible solution to recycling catalysts while keeping its efficiency in chemical synthesis. In this work, Cu SACs anchored on N-doped graphene (Cu SACs/NG) were prepared and first used for C–N coupling reactions. During the preparation, Cu–N–C structures, including Cu–N4 moieties, were formed in a one-step pyrolysis method. As-prepared Cu SACs/NG exhibited excellent catalytic activity toward C–N coupling reactions with a broad scope of substrates and showed outstanding performance of recycling. Compared with Cu nanoparticles (Cu NPs/NG), the advantages of single-atom catalysts were validated via experimental and theoretical calculations. The enhanced performances were attributed to increasing the number of active sites and increasing the intrinsic activity of each active site. This work provides an alternative synthetic strategy for fabricating atomically dispersed SACs and represents a significant advance for coupling reactions.
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CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Huimei Mo,Zhanhong Chen,Xiaoying Liao,Shiting Liang,Jin Xu,Haolang Zeng,Shuqian Shen,Junhui Yi
Morphology engineering and heteroatom doping are established strategies for developing high-performance photocatalysts. In this study, phosphorus-doped three-dimensional porous g-C₃N₄ nanosheets were synthesized by calcining melamine–cyanuric acid supramolecular precursors, followed by gas-phase phosphidation using NaH₂PO₂ at 300 °C. The optimized material exhibited exceptional photocatalytic activity, achieving over 99 % Rhodamine B degradation within 40 min under visible light, significantly outperforming undoped 3D and bulk g-C₃N 4 . It also showed the highest photocurrent density and prolonged carrier lifetime, indicating enhanced charge separation. The catalyst maintained >90 % efficiency after four cycles, demonstrating remarkable stability. Mechanistic studies revealed that holes and superoxide radicals serve as the primary active species, with hydroxyl radicals also participating. The enhanced performance is attributed to the synergistic effect of P-doping—which modifies the electronic structure—and the 3D porous framework, which facilitates mass transfer and exposes active sites. This work provides a scalable route to efficient photocatalysts for environmental remediation.
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