Biomedical Materials
·
2024
·Vol. 19
·期 3
·035009
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IF 3.9
Guancheng Zhan,Lixia Yu,Qiqi Wang,Longyang Jin,Xiaohong Yin,Xiaodong Cao,Huichang Gao
Corneal stromal injury is a common surgical disease. With the development of tissue engineering materials, many artificial corneal scaffolds have been developed to replace allograft corneal transplantation and solve the problem of corneal donor shortage. However, few researchers have paid attention to corneal stromal wound healing. Herein, a nanocomposite of amino modified mesoporous bioactive glass (MBG-NH2) and microRNA-133b (miR-133b) was introduced into the patterned collagen films to achieve corneal stromal injury repair. MBG-NH2 nanoparticles as a nano delivery carrier could efficiently load miR-133b and achieve the slow release of miR-133b. The physicochemical properties of collagen films were characterized and found the microgrooved collagen films loaded with miR-133b@MBG-NH2 nanoparticles possessed similar swelling properties, optical clarity, and biodegradability to the natural cornea. In vitro cell experiments were also conducted and proved that the patterned collagen films with miR-133b@MBG-NH2 possessed good biocompatibility, and miR-133b@MBG-NH2 nanoparticles could be significantly uptake by rabbit corneal stromal cells (RCSCs) and have a significant impact on the orientation, proliferation, migration, and gene expression of RCSCs. More importantly, the patterned collagen films with miR-133b@MBG-NH2 could effectively promote the migration of RCSCs and accelerate wound healing process, and down-regulate the expression levels of α-SMA, COL-I, and CTGF genes associated with myofibroblast differentiation of corneal stromal cells, which has a potential application prospect in the repair of corneal stromal injury.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Tong Ji,Guosheng Xu,Ying Wu,Yu Wang,Chuqiao Xiao,Bao Zhang,Baocai Xu,Feiran Xu
The potential of rapeseed-derived peptides (RDPs) in the amelioration of type 2 diabetes mellitus (T2DM) has been hypothesized. However, the mechanisms of the intestinal endocrine hormones activated by RDPs have not been fully understood. This study aimed to explore the amelioration of T2DM and associated hepatic lipid metabolism disorders using RDPs by affecting glucagon-like peptide-1 (GLP-1) secretion. Eight RDPs were prepared by different stepwise enzymatic hydrolysis, wherein RCPP-3 (sequential using alcalase/flavourzyme) and RNPP-1 (sequential using alcalase/trypsin) maintained the normal blood glucose level, significantly increased the body weight (27.17 ± 0.19%) in T2DM mice compared to the positive group (p < 0.05). Western blotting and immunofluorescence experiments indicated that RCPP-3 and RNPP-1 regulated the intestinal endocrine hormones GLP-1 secretion through the calcium-sensing receptor (CaSR). Additionally, the PI3K-Akt pathway was significantly activated by GLP-1, leading to marked improvements in hepatic lipid parameters (TC, TG, LDL-c, and HDL-c) and mitigated fat accumulation (p < 0.05). Notably, the stimulating effect of RCPP-3 on GLP-1 was 10.05% ± 0.71% higher than RNPP-1. G2-R3, a fraction separated from RCPP-3, which contained 14 peptides with the best capacity to stimulate GLP-1 secretion, was identified using HPLC-QTOF-MS/MS. This study suggests the potential of RDPs as novel functional food supplements for ameliorating T2DM.
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Journal of Materiomics
·
2024
·
IF 8.4
Xin Zhou,Chenbin Ai,Xiaojing Wang,Zhen Wu,Jianjun Zhang
Pure ZnO exhibits low photocatalytic H 2 O 2 production activity due to the rapid charge recombination. To realize the spatial separation of photogenerated electrons and holes, constructing an electron transfer channel on the ZnO surface is an effective approach. This study successfully modified the surface of ZnO using F – (ZnO/F) by introducing NH 4 F in an aqueous phase photocatalytic system. The F – is adsorbed on the ZnO surface by Coulombic force and significantly improves the photocatalytic H 2 O 2 production performance of ZnO, with the highest efficiency of 4137.2 μmol·g –1 ·L –1 ·h –-1 . The photocatalytic performance enhancement mechanism of ZnO/F is explained in terms of electron transfer dynamics by femtosecond transient absorption spectroscopy (fs-TAS) measurements. F – surface modification constructs a new ultrafast electron transport pathway from the ZnO CB to F – , and the optimal ZnO/F exhibits the fastest interfacial electron transfer lifetime of 5.8 ps. The F – surface modification effectively facilitates the charge separation, thereby increasing the number of electrons available for photocatalytic H 2 O 2 reaction. This study has revealed the roles of F – surface modification in the photocatalytic H 2 O 2 production by ZnO and provides guidance for ionic modification to improve photocatalytic performance.
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Journal of Cleaner Production
·
2025
·
IF 10
Yunhao Pan,Wei Wang,Tiancheng Zha,Yibo Zhang,Xunming Tian,Yanan Zhu,Dongmei Liu,Aiwen Wang,Darren Delai Sun
Addressing the persistent bottlenecks of low efficiency, high costs, and complex fabrication in large-scale oil-in-water emulsion separation, especially for submicron emulsions where environmental compatibility and performance further degrade, this work introduces a cost-effective, biomass-derived separation layer, a straw-based gel membrane (SBGM), that emphasizes green design and functional integration. Fabricated via simple straw pretreatment and surface modification under solvent-free conditions, the SBGM is produced through an entirely green and straightforward route: one-step regeneration of straw cellulose to form gel spheres and a supporting matrix, followed by surface coating with a blended PVA/TiO 2 functional layer. Featuring a lotus-leaf-inspired bionic structure and abundant hydrophilic groups, the membrane exhibits superhydrophilicity (WCA = 0°) and underwater superoleophobicity (UOCA = 162°), together with exceptional durability and stability against acids, alkalis, and extracellular polymers in wastewater. Critically, it delivers over 99 % separation efficiency across diverse submicron oil-in-water emulsions and maintains stable performance over repeated cycles, with a flux recovery rate of approximately 90 % and a fouling deposition ratio of approximately 30 %. Moreover, the photosensitive properties of TiO 2 confer superior hydrophilicity and self-cleaning capability, enabling the SBGM to sustain over 99 % separation efficiency even when treating real kitchen wastewater. Collectively, these advances markedly enhance the SBGM's practical potential for submicron oil-in-water emulsion separation.
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PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Wei Zhang,Lianfeng Wu,Shuxue Zhou
MXenes have attracted significant attention due to their unique properties, including antibacterial property and electrical conductivity. However, the antibacterial performance of MXenes-based coatings strongly depends on their superficial distribution. In this study, Ti 3 C 2 nanosheets were modified with dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium (QAS) and further incorporated into waterborne epoxy coatings. Influence of modifier ratio on the distribution of QAS-modified Ti 3 C 2 nanosheets (Q-Ti 3 C 2 ) in coatings as well as on the antibacterial/antistatic performance of coatings was investigated. Appropriate amount of QAS (i.e., 10 %) for modification was critical to achieve high antibacterial performance at low content of Ti 3 C 2 nanosheets. The Q-Ti 3 C 2 embedded coating could get 99.4 % inhibition against E. coil and 100 % against S. aureus at 0.5 wt% loading. In contrast, the coating with unmodified Ti 3 C 2 only exhibited antibacterial rate of 85.3 % and 87.4 % for E. coil and S. aureus , respectively. The prominent antibacterial performance of Q-Ti 3 C 2 based coatings mainly results from the enriched residence of Ti 3 C 2 nanosheets at the upper layer of coatings and partially from the intrinsic antibacterial property of QAS. Additionally, the superficial distribution of Ti 3 C 2 nanosheets endowed the coatings with low surface resistance of 1.8 × 10 9 Ω, thereby conferring antistatic properties, and hence, facilitating antibacterial durability, even if the coating contains as low as 1 wt% Q-Ti 3 C 2 nanosheets. The nanocomposite coatings also exhibited better adhesion and high pencil hardness.
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FUEL
·
2025
·
IF 7.5
Wenji Liang,Junwei Shi,Zhenhua Qin,Jinguang Cai,Yun He,Jianfen Li
Exploring efficient and durable non-noble metal catalysts toward oxygen reduction/evolution reaction (ORR/OER) is of practical significance in advancing Zn-air batteries. Herein, we introduce a three-dimensional (3D) bifunctional electrocatalyst (Fe/Ni@NSC) consisting of N, S-dual doped mesoporous carbon nanosheets/carbon nanotubes embedded with abundant FeS/FeNi nanoparticles and Fe/Ni-N x sites by integrating rod-like ZIF-L@S-g-C 3 N 4 with Fe/Ni-phen complex and subsequent pyrolysis. The 3D structure not only offers a high surface area for active sites but also accelerates O 2 transport/charge transfer. Leveraging the synergistic effect of the 3D porous carbon network and multiple active sites, Fe/Ni@NSC exhibited outstanding activities in both ORR (half-wave potential, 0.868 V) and OER (overpotential, 317 mV at 10 mA cm −2 ), indicating a low potential gap of 0.679 V, outperforming the Pt/C + RuO 2 benchmarks (0.695 V). The Zn-air batteries based on Fe/Ni@NSC achieved a promising open circuit voltage (1.47 V), peak power density (172.59 mW cm −2 ), as well as long-term cycling stability (370 h). Furthermore, density functional theory (DFT) calculations also demonstrated that the interfacial electronic interaction between FeS and FeNi effectively boosted the bifunctional catalytic performance for ORR/OER. This study lays the foundation for designing low-cost and efficient 3D structure non-noble metal catalysts for more energy conversion and storage devices.
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CARBON
·
2025
·
IF 11.6
Hongsheng Liang,Tian Hou,Tiancheng Liu,Shengchong Hui,Zhaoyang Hou,Zhen Wang,Bin Shi,Limin Zhang,Hao Shen,Hongjing Wu
Comprehensively understanding the role of interfacial engineering in tailoring dielectric response is essential for the development of next-generation electromagnetic wave (EMW) absorbers. Rare-earth oxides, with their flexible valence states and localized 4f orbitals, hold great potential to mediate interfacial charge transfer and polarization, yet the electromagnetic loss mechanisms underlying such effects remain unclear. Here, we demonstrate a rare-earth oxide–regulated interfacial engineering strategy, where the incorporation of CeO 2 into NiCo 2 O 4 constructs abundant heterointerfaces with dynamic valence states. Such CeO 2 -induced interfacial polarization markedly strengthens dielectric response and facilitates impedance matching, thereby surpassing the limitations of single-phase components. Dielectric analysis reveals that polarization loss dominates (>88 %) within the absorption band, while conduction loss plays a secondary role. The results show that interfacial charge redistribution driven by Ce 3+ /Ce 4+ redox flexibility, which creates abundant interfacial polarization centers and enhances relaxation. As a result, the optimized NiCo 2 O 4 /CeO 2 –T3 delivers outstanding EMW absorption, achieving a broad effective absorption bandwidth of 6.37 GHz at 2.00 mm and reflection loss of −60.09 dB at 2.20 mm (>99.99 % attenuation). This study establishes rare-earth oxide–enabled interfacial engineering as a powerful paradigm for amplifying interfacial polarization and guides the rational design of high-performance, lightweight EMW absorbers.
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APPLIED CLAY SCIENCE
·
2025
·
IF 5.8
Guixiang Wang,Qizi Wu,Maomao Guo,Shilong Zhang,Qiuyan Luo,Hao Yu,Xuyan Guo,Fuqiu Ma,Haining Feng,Ruizhi Wu,Boris Krit
In this study, a novel CoZnAl-LDH coating was synthesized in-situ on anodized aluminum through a hydrothermal method without introducing trivalent metal salts. Subsequently, a vanadate-intercalated LDH-VS coating was fabricated via ion exchange and hexadecyltrimethoxysilane (HDTMS) self-assembly, which integrated long-term corrosion resistance, friction reduction, and superhydrophobicity into a single coating. The morphology and structure of the coatings were investigated using SEM, EDS, XRD, FT-IR, and XPS. The coating performance was evaluated through scratch tests, contact angle, electrochemical, and friction wear tests. The results demonstrated that the contact angle of the LDH-VS increased from 26° to 154° and remained above 120° even after prolonged immersion, exhibiting outstanding self-cleaning and antifouling properties. After 28 days of immersion in 3.5 wt% NaCl solution, the corrosion current density of LDH-VS decreased by four orders of magnitude to 8.09 × 10 −9 A·cm −2 compared to bare aluminum alloy and the microstructure remained intact, indicating excellent long-term corrosion resistance. Friction tests confirmed the superior friction reduction of the modified coating, with the average friction coefficient of LDH-VS decreasing to 0.28, significantly lower than that of the aluminum alloy. Scratch tests also verified the coating's excellent adhesion strength. This study provides new insights into the development and application of LDH in superhydrophobicity, long-term corrosion protection, and wear resistance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Min Tang,Wu Liu,Jinquan Wan,Shiyu Zuo,Zhiyong Wang,Rui Peng
Fenton-like oxidation is often hampered by high energy barriers, uncontrolled oxidation pathways, and inefficient reactive oxygen species (ROS) utilization. Here, we report an energy-driven confined catalytic nanoreactor that leverages the in-situ confinement energy generated within nanopores to fundamentally regulate degradation thermodynamics. Taking sulfamethoxazole (SMX) as a model contaminant, the confined nanoreactor exhibited a 22.11-fold higher kinetic constant (0.157 min −1 ) and 40 % enhanced mineralization efficiency compared with its non-confined system. The imprinting channel of confined nanoreactor enabled selective adsorption of SMX within the nanochannel, inducing pronounced confinement effects. The resulting confinement energy triggered a low-entropy degradation pathway (ΔS reduced by 3.2 × 10 3 -fold), which broke thermal equilibrium constraints and redirected SMX oxidation along a low-energy-barrier route. The in-situ confinement-induced low-entropy reaction not only accelerated pollutant degradation but also improved ROS conversion efficiency. This study demonstrated a green and sustainable approach to overcome the intrinsic efficiency bottleneck of Fenton-like processes and provide a new perspective on exploiting nanoconfinement effects for environmental remediation.
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FUEL
·
2025
·
IF 7.5
Yangshuo Liu,Yaotian Yan,Feiyu Xu,Liang Qiao,Jiehe Sui,Wei Cai,Xiaohang Zheng
The activation of the lattice oxygen oxidation mechanism is vital for enhancing oxygen evolution reaction (OER) performance as it enables direct O–O bond formation, avoiding the *OOH formation. Compared with the conventional adsorbate evolution mechanism (AEM), the lattice oxygen-mediated mechanism (LOM) can break the theoretical limit of conventional adsorbate-based scaling relations and enhance the oxygen evolution reaction kinetics. Thus, there is an urgent need for an efficient strategy for designing OER electrocatalysts based on LOM. The O p band center is employed as descriptor in conjunction with machine learning to facilitate the activation of lattice oxygen. The descriptor can accelerate the catalyst design process as it circumvents the need for complex intermediate calculations. According to predictions, the Fe-Co 3 O 4 catalyst exhibits OER performance comparable to that of noble metal catalysts. The Fe-Co 3 O 4 catalyst achieves a low overpotential of 258 mV at 20 mA cm -2 in 0.5 M H 2 SO 4 , attributed to the shift in catalytic mechanism from AEM to LOM.The incorporation of Fe effectively induces an upshift in the O p band center and weakens the Co–O bond, thereby promoting direct O–O coupling for O 2 generation and consequently reducing the OER overpotential. Our study introduces a method to activate the lattice oxygen of metal oxide electrocatalysts, holding substantial promise for enhancing large-scale hydrogen production.
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FUEL
·
2025
·
IF 7.5
Badusha Mohamad Ali,Hao Zhang,Lei Wang,Ziqi Yu,Chenbing He,Tangxin Zhang,Kaisen Jiang,Weiheng Liu,Jiayuan Wang,Lingyu Zhu,Jianli Wang
The production of biodiesel from renewable feedstocks through energy-efficient processes remains a pressing challenge. Pickering emulsions, stabilized by solid particles, have emerged as a promising approach to enhance biodiesel production. This study presents the synthesis of dumbbell-shaped Janus polymer nanoparticles (DS-JPNs) functionalized with organic amine bases, which serves as Pickering interfacial catalysts (PICs) for transesterification reaction. The anisotropic morphology and amphiphilic nature of DS-JPNs promote stable adsorption at the soybean oil-methanol interface, leading to reduced interfacial tension, smaller droplet formation, and the generation of thermodynamically stable emulsions. This microreactor system prominently enhances the interfacial area and mass transfer efficiency, thereby accelerating the transesterification efficiency. Consequently, the DS-JPN-TMA catalyst achieved a biodiesel yield of 85.4 % under static conditions, a 2.6-fold increase compared to the spherical PS-TMA counterpart (34.2 %). Among the examined Janus organic base catalysts, DS-JPN-TBD demonstrated the highest catalytic performance (TOF 12.51 h −1 ), attaining a biodiesel yield of 96.7 %, attributable to the strong basicity of its bicyclic guanidine moieties. Furthermore, DS-JPN-TBD retained 94.2 % of its catalytic activity after five reaction cycles, evidencing excellent reusability and durability. This study underscores DS-JPN-TBD as an innovative, energy-efficient, and sustainable solution for biodiesel production and proposes a scalable strategy for green energy applications.
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RENEWABLE & SUSTAINABLE ENERGY REVIEWS
·
2025
·
IF 16.3
Xiaolong Wang,Wenhao Li,Mingzhu Xie,Xiaowei Wang,Yong Shuai,Zhaolong Wang
As the demand for sustainable energy continues to rise, the development of high-efficient hydrogen (H 2 ) production via water electrolysis based on precise bubble manipulation is garnering significant attention. This study presents a novel three-dimensional (3D) micro-cone engineered electrode to enhance the ion exchange rate and catalytic active site regeneration during the electrochemical water splitting process, thereby improving H 2 production rates. The unique micro-cones enables precise manipulation of H 2 bubble behavior, which achieves directional transport from nucleation to detachment at the top within a mere 224 ms. Simultaneously, the bubble manipulation performance of micro-cones with varying geometric configurations and dimensional parameters is investigated. The optimal bubble manipulation performance is achieved when the micro-cones have a circular base with a diameter of 100 μm, a height of 300 μm, and an array center distance of 100 μm. The performance of the 3D micro-cone engineered electrode outperforms conventional commercial electrodes, with its capacitance ( C dl ) value reaching 35.1 mF cm −2 , which is significantly higher than those of Ni foam and Ni-CP. Additionally, under a 1.7 V vs. RHE condition, the electrode achieves a current density of 80 mA cm −2 , with a H 2 collection rate 32.3 % higher than that of a Ni foam under identical conditions. Large-scale outdoor experiments driven by solar energy further confirm the scalability and stability of the micro-cone engineered electrodes, which is capable of producing substantial H 2 quantities over extended periods without bubbles blockage. The large-area micro-cone electrodes, when operated continuously under high outdoor current density, still exhibit excellent H 2 production and bubble directional manipulation stability. This research highlights the transformative impacts of advanced electrode design on water electrolysis efficiency and H 2 bubbles manipulation, offering new insights for ultra-high efficient sustainable H 2 production.
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