BIOMATERIALS
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2024
·
IF 12.8
Xinyuan Yang,Weimin Nie,Chong Wang,Zhonglin Fang,Luoran Shang
Probiotic-based therapies have shown great potential in the prevention and treatment of many diseases by positively regulating intestinal flora homeostasis. However, the efficacy of oral probiotics is severely limited due to the loss of bioactivity, short intestinal retention time, and insufficient therapeutic effect. Here, based on droplet microfluidics, we developed a hydrogel microsphere with colonic targeting and mucoadhesive capabilities as a multifunctional delivery platform, which can be used for co-delivery of probiotics ( Escherichia coli Nissle 1917, EcN) and auxiliary molecules (indole-3-propionic acid, IPA), achieving synergistic therapeutic effects. In vivo studies shown that the integrated multifunctional microspheres can significantly reduce intestinal inflammation, repair intestinal barrier function, enhance probiotic colonization in the intestine, and modulate disordered intestinal flora, demonstrating enhanced therapeutic effects in a mouse model of colitis. This work reveals that microfluidic-based smart droplet microspheres can provide a versatile platform for advanced microbial therapies.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Haiyan Wang,Renzhong Xue,Xiang Zhu,Mengxin Ning,Haidan Liu
Improving energy storage density and efficiency of antiferroelectric materials could promote their use within energy storage field, particularly in the context of pulsed power sources. In this study, Sm and Hf co-doped silver niobate (AgNbO 3 ; AN) ceramics were prepared using traditional solid-state method. Comprehensive analysis of crystal structure, microstructure, defects, absorbance, and energy storage performance of the material was conducted. Results reveal that co-doping increased the concentration of cation vacancies and band gap, decreased the M 1 –M 2 and M 2 –M 3 phase transition temperatures, and enhanced the antiferroelectric phase stability and energy storage performance. The (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited energy storage density of 5.35 J/cm 3 and energy storage efficiency of 73% at electric field ( E ) of 295 kV/cm, demonstrating significant improvement. The (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited excellent thermal stability (<5% in the range of 25 °C-125 °C) and frequency stability (<3% in the range of 1–100 Hz under E = 290 kV/cm). Additionally, the (Ag 0.955 Sm 0.015 )(Nb 0.95 Hf 0.05 )O 3 ceramic exhibited ultrahigh discharge speed (∼18 μs) and high discharge energy density (4.9 J/cm 3 ). These advantages make these ceramics promising materials for energy storage applications.
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APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Hongming Zhang,Lu Zhang,Ismael A. Rodríguez-Pérez,Wenkang Miao,Kangli Chen,Wenfeng Wang,Yuan Li,Shumin Han
Sodium borohydride (NaBH 4 ) is widely identified as a promising hydrogen storage material, therefore, developing a catalyst with high efficiency for hydrogen production is an important subject for development and utilization of hydrogen energy. Meanwhile the hydrolytic mechanism of NaBH 4 needs further study which is helpful for hydrolysis researches. In this study, an efficient catalyst comprising of carbon nanospheres (CNSs) supporting ultrafine bimetallic Pt-Co nanoparticles (CNSs@Pt 0.1 Co 0.9 ) has been successfully synthesized for hydrogen evolution from NaBH 4 hydrolysis. The growth of the Pt-Co nanoparticles on the surface of CNSs is regulated by adjustment of solvent during the preparation. The as-prepared CNSs@Pt 0.1 Co 0.9 catalyst exhibits an outstanding performance in the kinetic and thermodynamic tests with the highest hydrogen generation rate (HGR) of 8943 mL H2 ·min −1 ·g M –1 , initial turnover frequency (TOF) value of 280.1 moL H2 ·min −1 ·mol Pt –1 , and a low activation energy ( E a ) of 38.0 kJ·mol −1 . The hydrolytic mechanism has been surveyed simultaneously by the isotopic tracer method through the mass spectrometric analysis. The catalyst retains extremely high catalytic activity value and the hydrogen generation conversion is still 100% even after five cycles in the catalytic performance tests.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Xia Li,Jie Song,Yanji Jiang,Huimin Sun,Xianqiang Yin
Aniline compounds (ACs) and microplastics (MPs) are emerging contaminants that frequently co-occur in industrial wastewater and soil-groundwater systems. However, their co-transport mechanisms and in particular the role of MPs as carriers to enhance ACs transport remain unclear. This study employs adsorption and column experiments to systematically analyze the adsorption characteristics and mechanisms of polyacrylonitrile microplastics (PANMPs) for aniline and p-chloroaniline. It also examines the effects of key parameters, such as flow rates, pH, and IS, on the transport behavior of ACs in the presence of MPs, thereby offering new insights into their environmental fate. The adsorption experiments revealed that the adsorption of MPs onto ACs follows a multilayer physical adsorption mechanism, with enhanced adsorption capacity observed at lower pH and higher ionic strength (IS). Column transport experiments demonstrated that PANMPs significantly promote ACs migration. Notably, pH and IS modulated the co-transport behavior by altering the adsorption affinity between MPs and ACs, thereby enhancing the disparity in their transport behavior. Furthermore, the greater mobility of PANMPs with increasing flow rates led to a greater extent of ACs transport in the sand column. These findings are of great significance for understanding the transport behavior and fate of MPs and ACs in soil-groundwater.
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高影响因子
SYNTHETIC METALS
·
2025
·
IF 4.6
Caidi Zhang,Guangyu Li,Chengqian Duan
A dodecahedral single-atom cobalt catalysts with nitrogen-doped carbon matrices (Co-N-C) is synthesized by calcining MOFs precursors (ZIF-67), which is constructed as non-enzymatic sensor for the sensitive detection of nitrite (NO 2 − ). The characterization of the Co-N-C catalysts has been performed by X-ray powder diffraction (XRD), transmission electron microscopic (TEM) and scanning electron microscopy (SEM). The outcome shows that Co-N-C is a dodecahedron with a rough surface and a diameter of about 200–280 nm. The electrochemical measurements demonstrate that the Co-N-C/GCE sensor displays a favourable voltammetric response towards the oxidation of NO 2 − with a wide linear range from 0.1278 mM to 42.7778 mM. It also displays a low detection limit of 0.0426 mM (S/N = 3) and high sensitivity of 715.32 μA mM −1 cm −2 and 305.37 μA mM −1 cm −2 . Moreover, determinations of NO 2 − in tap water and pickle juice samples are performed respectively by the standard addition method. The results of three parallel measurements are acceptable with the relative standard deviation of 0.36–1.30 % and the recovery of 95.60–101.80 %. Therefore, Co-N-C/GCE is expected to be a new platform for NO 2 − detection.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yonghao Wang,Shanshan Lei,Miao Liu,Ming Zhou,Zhiwei Zou,Youmei Liu,Xiaomei Zheng
Electrocatalytic reduction of nitrate (NO 3 RR) to ammonia is considered as a promising strategy for nitrogen resource recovery from nitrate-contaminated water. However, conventional Cu-based catalysts often suffer from poor selectivity, with toxic nitrite accumulation and sluggish reduction kinetics. This work reports a Cu Co co-loaded carbon catalyst (CuCo-C) that leverages electron-deficient Cu sites in synergy with Co to significantly enhance the NO 3 RR activity and ammonia selectivity. The optimized CuCo-C discloses a nitrate removal rate of 94 %, an ammonia selectivity of 99 % and multi-turn stability. The combination of comprehensive surface analysis and experimental techniques reveals that the high NO 3 − -to-NH 4 + performance results from Co-induced electronic modulation of Cu sites. This synergistic effect not only kinetically facilitate the adsorption and activation of NO 3 − but also enhance the selectivity of key intermediate (NO 2 − ) towards NH 4 + formation. Density Functional Theory (DFT) calculations and synchrotron radiation-based XAFS measurements further reveal the presence of Co promotes the adsorption of NO 3 − (forming *NO 3 ), lowers the energy barrier for *NO 3 to *NO 2 deoxygenation and simultaneously suppresses the competing H 2 evolution reaction. Importantly, the presence of Co promotes the conduction of the electron reduction path by CuCo-C to generate NH 4 + . This work provides valuable insights for the rational design of high-performance Cu-based electrocatalysts for sustainable nitrate remediation and ammonia synthesis.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2025
·
IF 6.1
Huahua Gao,Yao Xiao,Juan Hu,Gen Zhang,Peiyuan Qian,Lingli Liu
Dimethoate, a widely used organophosphorus pesticide in agriculture and animal farming, poses significant risks to aquatic ecosystems and human health upon environmental release. Tetracycline, one of the most widely used antibiotics, is frequently detected in surface water and groundwater. In agricultural or urban watersheds, where pesticide runoff and antibiotic-laden wastewater frequently co-occur. The coexistence of tetracycline and dimethoate in nature is common, and this coexistence might impose environmental stress, affecting other organisms. This study investigated the interactive effects of tetracycline (0, 0.085, and 0.85 mg/L) and dimethoate (0, 1.6, and 16 mg/L) on the freshwater rotifer Brachionus calyciflorus , focusing on life cycle parameters, oxidative stress responses, and microbial-mediated dimethoate degradation. Key findings revealed that the co-exposure to tetracycline and dimethoate exerted a synergistic effect, significantly reducing rotifer population density and growth rate compared to exposure to either contaminant alone. Additionally, tetracycline inhibited bacterial growth, which in turn prolonged the environmental persistence of dimethoate in aquatic systems by impeding its natural biodegradation. Collectively, these results highlight the non-additive interactive risks associated with the coexistence of tetracycline and dimethoate, emphasizing the necessity of considering such contaminant interactions in environmental risk assessment to more accurately evaluate the ecological hazards of combined pollution in aquatic systems.
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Chemistry-An Asian Journal
·
2025
·
IF 3.3
Xingru Chen,Longhui Nie,Xueling Li
Doping is an effective way to improve the separation efficiency of photogenerated carriers, widen visible light adsorption, and tune the band structure of carbon nitride (g-C 3 N 4 , CN). Herein, Na, S co-doped CN (CNNS- x ) photocatalysts were successfully prepared by a one-step thermal polymerization method using urea and sodium thiosulfate as the raw materials. The incorporation of Na and S not only improves the visible light response intensity and photogenerated carrier separation efficiency of CN but also enhances oxygen adsorption capacity and optimizes the energy band structure of the CN. The optimal CNNS-2.5 photocatalyst revealed a significantly enhanced photocatalytic performance and yielded 4.85 mM (24.25 mmol·g −1 ·h −1 ) H 2 O 2 in 1 h under visible light irradiation. The above yield is 4.71 times that of CN. It also revealed good stability in four cycles. The active species capture test and ESR revealed that the photocatalytic mechanism for H 2 O 2 production on CNNS-2.5 was a two-step, single-electron oxygen reduction reaction (ORR) pathway.
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Sustainable Materials and Technologies
·
2025
·
IF 9.2
Haize Jin,Xiaoxia Huang,Wen Yijun,Mengyao Zhu,Cuixia Li,Qikun Wang
Photothermal synergistic catalysis provides an efficient implementation strategy for CO₂ conversion into renewable energy. Here, we synthesized a geopolymer/g-C₃N₄/Ni(OH)₂ (GCN) photothermal catalyst featuring nanoscale-interval exposed adsorption and photothermal catalytic active sites through concurrent geopolymerization and alkaline precipitation reactions. The rational modulation of Ni(NO₃)₂ proportion induced explosive nucleation of Ni(OH)₂, ultimately resulting in a nanostructure where geopolymer nanoclusters and Ni(OH)₂ nanocrystals were intergrowth on the g-C₃N₄ interface. The construction of this ternary system effectively enhanced the photogenerated electrons transfer efficiency, and synergized with the thermal effect to significantly improve CO₂ reduction efficiency. And the GCN demonstrated exceptional capture capabilities for both CO₂ and H₂. Under light irradiation, GCN exhibited non-thermal photochemical effect characteristics. Through the photo-assisted thermal catalysis synergistic action, the CO₂ conversion product rate reached 1057.89 mmol.g cat −1 .h −1 , which was 17,869.84 times and 1.16 times higher than those under pure photocatalysis and pure thermal catalysis, respectively. The corresponding CO selectivity can reach 96.05 %. And GCN exhibited stable photothermal cycling performance, the production rate in the 10th cycle still reached 970.28 mmol·g cat −1 ·h −1 . Moreover, the formation of chemical bonds at the geopolymer/Ni(OH)₂ interface effectively suppressed the excessive reduction of Ni(OH)₂ to metallic Ni 0 , thereby inhibiting deep hydrogenation of CO and ensuring high CO selectivity. This study provides both theoretical and technical foundations for the development of low-cost and high-efficiency CO₂ photothermal reduction catalysts.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yingdong Hao,Yingxiao Wang,Pengyu Chen,Lu Chen,Wei Wei,Nannan Sun
Photocatalytic oxidation of methane (CH 4 ) to value-added chemicals offers a sustainable and promising approach for chemical synthesis, however, efficient catalysts for the activation of inert C H bonds remain challenging. Herein, a novel Ag-AgCl biphasic composite was used as co-catalysts to modify ZnO semiconductor (Ag-AgCl/ZnO-z). Structure properties and catalytic performance in photocatalytic oxidation of CH 4 of the sample were systematically investigated, together with comparison with pure ZnO (ZnO-z) and a single Ag modified counterpart (Ag/ZnO-z). It was found that Ag-AgCl/ZnO-z was enriched with heterogeneous interfaces, which facilitated ultrafast carrier transport and their prolonged separation. Interestingly, AgCl acted as a hole acceptor, and the lattice Cl can be directly activated to •Cl, which is then responsible for forming a new •CH 3 formation pathway via a hydrogen atom transfer (HAT) mechanism. Moreover, a Cl-looping process can be established so that the catalyst remained stable during cyclic reactions. Under the optimum conditions, an excellent liquid oxygenates productivity of 12,731 μmol·g −1 ·h −1 was achieved. This work presents a prototype for designing biphasic composite co-catalysts, thereby offering valuable insights into introducing multiple CH 4 activation pathways.
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Processes
·
2025
·Vol. 13
·期 11
·3507
·
IF 2.8
Yongshuang Li,Ting Feng,Jifei Liu,Cheng Pan,Yi Wang,Zhenzhen Wu,Guozhi Fan
The lignin nanoparticle (LNP) was prepared by the self-assembly method and further blended with poly(butylene adipate-co-terephthalate) (PBAT) to obtain a PBAT/LNP composite using a solvent casting method. It was found that the nano-modification of lignin effectively improved the compatibility between the components, and the mechanical properties, gas barrier properties, UV resistance, degradation, and antibacterial properties of the PBAT/LNP composite. Compared with PBAT, the tensile strength, elongation at break, and elastic modulus of the PBAT/LNP composite with 8 wt% LNP (PBAT/LNP-8) increased by 37.36%, 47.30% and 50.70%, respectively. Moreover, the mechanical properties, UV-blocking performance, and gas barrier properties of PBAT/LNP-8 were better than those of the commercial degradable packing bag, and the composite derived from PBAT and lignin extracted from wheat straw also showed excellent properties. This work explored a way to expand the utilization of lignin from lignocellulosic biomass, which not only helped to solve the environmental pollution caused by the widespread use of non-degradable plastics, but also promoted the replacement of fossil resources.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yilin Zhan,Zhongyong Xu,Lei Wang,Mingle Li,Xiaoqiang Chen,Taisheng Wang,Na Zhang,Bin Liu
The extensive agricultural use of chitin synthesis inhibitors (CSIs) has garnered significant concern due to their environmental persistence and potential ecological risks. A persistent challenge in this context is the concurrent discrimination and quantitative detection of multiple CSI residues in complex matrices. To address this issue, we developed a fluorescent sensor array utilizing a supramolecular system for the identification and quantification of four common CSIs: buprofezin, chlorfluazuron, diflubenzuron, and flufenoxuron. This system exploits the co-binding of a fluorescent indicator and CSI within the hydrophobic cavity of albumin, inducing pattern-based ratiometric fluorescence responses. The generated unique fluorescence fingerprint profiles for each CSI enable differentiation through multivariate statistical analyses, including linear discriminant analysis (LDA) and hierarchical cluster analysis (HCA), yielding 100 % classification accuracy across both individual CSIs and their mixtures. Furthermore, quantitative detection is facilitated by a linear correlation between LDA feature scores and CSI concentrations. The practical utility of this platform was substantiated by successful discrimination of CSIs in real-world samples, including millet, soil, and aqueous environments, with performance maintained across diverse matrix compositions, offering a critical advancement in addressing the analytical challenges posed by these persistent pesticide residues.
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