JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jingru Chen,Nian Liu,Hongzhou Zheng,Linshan Jia,Xiaohong Hou,Jianhua Qu,Xiaoli Huang,Qi Hu
With the increasing demand for sustainable energy, enzyme-catalyzed biodiesel preparation has garnered significant interest owing to its green and efficient characteristics. However, conventional immobilized lipase (LIP) is susceptible to desorption and inactivation and fails to balance the catalytic efficiency and stability, limitations that seriously restrict the industrial application. To address this, we constructed a carrier through hydrophobically modifying University of Oslo-66-NH 2 (UiO-66-NH 2 ), an amino-functionalized metal-organic framework (MOF), with octadecylphosphonic acid (OPA). Subsequently, OPA/UiO-66-NH 2 was employed to immobilize LIP. Under optimal conditions, the immobilization capacity of OPA/UiO-66-NH 2 @LIP reached 48.59 mg/g. Compared to free LIP, OPA/UiO-66-NH 2 @LIP exhibited superior thermostability, pH adaptability, and storage stability, retaining 85.0 % activity after 30 days. Using sunflower oil as the substrate, a biodiesel conversion of 84.8 % was achieved under optimized parameters. After adding 2 % fatty acid methyl ester ethoxylate (FMEE), interfacial activation enhanced the catalytic efficiency, increasing the conversion to 99.2 %, moreover, this value remained at 84.1 % after ten cycles. This study combines carrier engineering with interfacial activation to develop a novel nano-immobilized biocatalyst with promising potential for biodiesel synthesis.
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Nanoscale
·
2025
·
IF 5.1
Xinke Yu,Sili Liu,Zhili Wan,Xiaoquan Yang
Supramolecular hydrogels assembled from natural herbal small molecules represent a promising platform for the development of biocompatible and multifunctional soft biomaterials. In this study, we report a novel multicomponent supramolecular hydrogel system constructed from the co-assembly of glycyrrhizic acid (GA) and rhein (Rh) via Zn2+ modulation. The introduction of Zn2+ not only reinforces the mechanical stiffness and toughness of the GA-Rh hydrogel network through complexation but also improves its antibacterial efficacy and anti-inflammatory capacity. Notably, a hierarchical nanofibrillar gel network with an internal multiscale structure is formed, in which a micron-scale pore network formed by the GA nanofibrils and a submicron-scale pore network formed by the GA-Rh co-assembled nanofibrils synergistically contributed to the overall structural integrity and biological performance. In vitro assays demonstrate that the GA-Zn-Rh hydrogels exhibit potent antibacterial activity against Staphylococcus aureus and Escherichia coli, excellent biocompatibility, and pronounced anti-inflammatory effects. This work provides valuable insights into the relationships between nanostructure and functionality in multicomponent bioactive herbal hydrogels, offering a supramolecular strategy to mimic the synergistic therapeutic principles of traditional Chinese medicine. These findings pave the way for the development of nature-inspired bioactive hydrogels for wound healing and broader biomedical applications.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yan Liu,Xingnian Duan,Xiaoyu Qiu,Chengjia Luo,Xixiang Liu,Jianmei Cen
Developing efficient electrocatalysts is very important for hydrogen production. These catalysts help speed up the oxygen evolution reaction (OER). This is crucial for solving energy shortages and reducing pollution. Herein, Co-doped NiMoO 4 (Co-NiMoO 4 /NF) was successfully prepared by pyrolysis of ZIF-67 via an impregnation-hydrothermal strategy and as a catalyst for oxygen evolution reaction in alkaline solutions. The nanorod-nanosheet structure of Co-NiMoO 4 /NF provides large surface area and abundant active sites, while cobalt doping modulates the electronic structure of NiMoO 4 , which is conducive to the enhancement of the electrochemical activity of catalysts. Density-functional theory calculations further demonstrated that Co-doped Co-NiMoO 4 /NF was more favorable to the adsorption and stabilization of *OOH intermediates than NiMoO 4 /NF. As a result, Co-NiMoO 4 /NF exhibits excellent OER performance with an overpotential of 199 mV at 10 mA cm −2 and remains stable after 200 h of continuous testing under current density conditions of 10 and 500 mA cm −2 . The remarkable electrocatalytic performance of Co-NiMoO 4 /NF highlights its strong potential as an efficient catalyst for sustainable energy conversion systems.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Shan Li,Huixia Li,Taotao Huang,Xuebo Chen
The development of efficient Cu–Ce catalysts for selective CO oxidation in hydrogen streams (CO-PROX) remains a critical challenge for hydrogen purification technologies. Herein, we report an acid-modified Cu–Ce/γ-Al2O3 catalyst synthesized through HCl-assisted wet impregnation and thermal aging, demonstrating exceptional low-temperature CO-PROX performance. The optimized CuCe0.8(Cl)0.2/γ-Al2O3 catalyst achieves superior CO conversion below 160 °C and maintains stable activity for 50 h at 160 °C. Mechanistic studies reveal that HCl modification induces dual enhancement effects: (1) increased Cu+ species density enhances CO adsorption capacity; (2) elevated Ce3+ concentration promotes oxygen vacancy formation for efficient O2 activation. Complementary characterization demonstrates that the acid treatment optimizes the active species dispersion and creates hierarchical pore structures in the γ-Al2O3 support, which facilitates reactant accessibility and stabilizes catalytic intermediates. The reaction mechanism involves synergistic cooperation between Cu+-mediated CO adsorption, oxygen vacancy-assisted O2 activation, and hydroxyl-assisted bicarbonate intermediate formation on the alumina support. This work establishes an effective acid-modification strategy for designing durable CO-PROX catalysts, advancing the development of a practical hydrogen purification system.
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Catalysis Science & Technology
·
2025
·
IF 4.2
Congyu Qin,Shuchen Xing,Guiming Ba,Huilin Hu,Jinhua Ye,Defa Wang
Photothermocatalytic carbon dioxide (CO2) reduction into value-added chemicals is one of the promising methods for solar-to-chemical energy conversion. However, it remains a challenge in the improvement of catalytic activity and product selectivity in view of practical applications. Herein, we report a facile “two-step” approach – nitrogen treatment of Ti3C2 MXene (TC) and loading of Co nanoparticles – to synthesize a Co-nanoparticle/layered TiO2-TiN (Co/TiO2-TiN) composite as an efficient photothermocatalyst for selective reduction of CO2 to methane (CH4). In contrast to the Co/Ti3C2 catalyst that shows a high CO selectivity, the optimal 35Co/TiO2-TiN catalyst exhibits a CH4 evolution rate of 45.5 mmol gcat−1 h−1 with 99.3 % selectivity under a 300 W Xe lamp irradiation. The synergistic effect of increased light absorption capacity, reactive sites, CO2 adsorption/activation ability, and desorption energy barrier of CO* intermediate by the loaded Co nanoparticles and the formation of Ti−N−O bonds accounts for the significantly enhanced photothermocatalytic performance of 35Co/TiO2-TiN for selective CO2 reduction into CH4. Our work demonstrates that metal nanoparticle loading and formation of Ti−N−O bonds can be integrated into the strategy in developing a photothermocatalyst for efficient CO2 reduction with controlled product selectivity.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Qiansheng Li,Yi Dai,Hong Lu,Xiaoman Li,Fanghao Cheng,Jiti Zhou
Microbial-driven Fenton reactions are essential sources of reactive oxygen species in the aqueous environment and important pathways for pollutant degradation. However, their rates are usually limited by microbial respiration. Herein, N and Fe co-doped CDs (N, Fe-CDs) were used to construct a biological Fenton system with marine community YEP-1 for ketoprofen (KTP) removal. The addition of N, Fe-CDs significantly increased the aerobic degradation rate of KTP by 60.8 % at 48 h. Further analysis showed that N, Fe-CDs enhanced the microbial electron transfer system activity of YEP-1 to produce more H 2 O 2 . Moreover, the regeneration of Fe(II) in extracellular N, Fe-CDs was achieved under aerobic conditions, which was beneficial to activate the extracellular H 2 O 2 for more ·OH generation. Based on the metagenome analysis, N, Fe-CDs significantly increased the populations of genera Exiguobacterium , Leucobacter and Microbacterium . The enriched genes related to electron transfer and Fe(III) reduction were found to be closely associated with Microbacterium . Furthermore, the relative abundances of genes related to the chemotaxis and degradation of aromatic compounds were also increased. These results indicated that biological enzyme-catalyzed processes and N, Fe-CD-mediated Fenton reaction were jointly involved in KTP degradation. This work further advances our understanding of N, Fe-CDs-mediated microbial Fenton reactions.
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Materials Today Communications
·
2025
·
IF 4.5
Dong Kong,Lu Mei,Guoyun Tang,Bingsheng Xu,Zhuo Chen,Zhangfu Yuan
Super-hydrophobic nickel-cobalt (Ni-Co) alloy coating was fabricated on Q235 steel by single-step electrodeposition, without any post-treatment with low-surface-energy agents. The influence of NH 4 Cl concentration on surface morphology, chemical composition, thickness, crystal structure, wettability, and corrosion performance was systematically investigated. Characterization techniques included scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and a contact-angle goniometer, while corrosion behavior was evaluated by Tafel polarization and electrochemical impedance spectroscopy (EIS). The results showed that the addition of crystal modifier NH 4 Cl did not affect the thickness and phase structure of Ni-Co coating but affected the composition and micro-morphology of the coating. With the increase of NH 4 Cl concentration, the cobalt content of the coatings gradually decreased, the nickel content gradually increased, and the micromorphology of the coatings changed from a prismatic cone-like structure to a sea urchin-like micro-nano structure. The contact angle of the Ni-Co coating prepared by 150 g/L NH 4 Cl was 152.56°, showing stable super-hydrophobicity, the self-corrosion current density ( I corr ) of the coating was the smallest, and the polarization resistance ( R p ) was the largest, which had the best corrosion resistance. After 12 h immersion in 3.5 wt% NaCl the coating retained its morphology and a contact angle above 150°, with only minor localized corrosion products, confirming durable super-hydrophobicity and superior anticorrosion performance.
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Materials Today Communications
·
2025
·
IF 4.5
Siwen Pi,Jie Li,Yingde Zhang,Weina Zhou,Hui Liu,Qing Wang
M-type strontium ferrite Sr 0.98 Ce 0.02 Dy x Fe 12- x O 19 ( x =0.00-0.20) doped with Ce-Dy elements was prepared by solid-phase sintering. The X-ray diffraction (XRD) results revealed the formation of the M-type hexaferrite having P6 3 /mmc as a space group along with the co-existence of a secondary DyFeO 3 phase; The field emission scanning electron microscopy (FESEM) results show that the grain boundaries of the samples are clear, the crystallinity is good and the grains have been refined; The purity of the sample can be proved by energy dispersive spectrometer (EDS), and no other elements were found except for doped elements; It is clear that the experimental weight percentages of each element are quite close to the theoretical from the reactants used to synthesize each sample. Meanwhile, the FTIR results show tetrahedral and octahedral tensile vibration peaks induced by Fe–O bonds of M-type strontium ferrite; Through the analysis of the vibrating sample magnetometer (VSM), when the doping amount of Dy element is x =0.08, the coercive force of strontium ferrite is increased. At this time, hard ferrite with high coercive force and high saturation magnetization intensity is prepared. Demonstrating the unlimited potential of M-type strontium ferrite in the fields of magnetic recording and storage devices.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Renze Zhang,Hongmin Zhu,Hanyang Ji,Fangling Zhou,Huai Wang,Zhuangzhuang Mu,Lu Kong,Zhenyu Yuan,Fanli Meng
Formic acid, a corrosive and toxic organic compound, poses risks to health and ecosystems due to environmental residues, highlighting the need for efficient detection methods. This study synthesized pure CuO and Co-doped CuO (CCO) cocklebur-like nanostructures using a one-step hydrothermal method. Moreover, the crystal structure, morphology, and elemental composition of CCO-4 samples were also investigated. Experimental results demonstrated that the optimal sample, CCO-4, exhibited a gas sensing response value of 118.6–100 ppm formic acid at an operating temperature of 125°C, which is approximately 16.5 times higher than that of pure CuO. Additionally, CCO-4 displayed excellent comprehensive performance, including low power consumption, a detection limit as low as 100 ppb, good selectivity for formic acid, and long-term stability. Based on Lewis acid-base theory and the formation of Cu 2 + −O 2 -• metal ion complexes, the gas sensing process and sensitization mechanism of CCO-4 were systematically analyzed. These findings offer new theoretical and technical pathways for developing low-power, high-performance formic acid sensors.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Xinle Han,Jing Xu,Yanfeng Shi,Lixingzi Wu,Ling Fu,Weina Xue,Yanhao Zhang,Xu Zhang,Xuli Jing,Zhibin Zhang
Microplastics and PFOA are emerging contaminants that are widely present in groundwater, posing threats to human health and ecosystems. This study aimed to investigate the remediation of polystyrene microplastics (PS-MPs) and perfluorooctanoic acid (PFOA) in groundwater using waste coconut shell biochar in permeable reactive barriers (PRBs). Fixed-bed column experiments were conducted with different bed depths, flow rates, initial pollutant concentrations, and co-contamination conditions. Results demonstrated that coconut shell biochar exhibited an effective adsorption capacity, with an initial concentration of 1 mg/L, flow rate of 0.5 mL/min, and bed depth of 2.5 mm, removal efficiencies of 75.00 % for PFOA and 36.24 % for PS-MPs were achieved within 10 days. Increasing the depth of biochar from 1.5 mm to 5.0 mm enhanced the removal efficiencies (PFOA:96.43 %, PS-MPs:61.72 %) and extended breakthrough times (480 min for PS-MPs, 2410 min for PFOA). Lower flow rates (0.2 mL/min) extended hydraulic retention time, improving adsorption (both PFOA and PS-MPs were > 75 %), while higher pollutant concentrations accelerate PRB depletion and reduce removal efficiency. Additionally, the presence of PS-MPs exhibited dual effects on PFOA remediation: promoting adsorption at low concentrations but causing competitive inhibition at high concentrations. Meanwhile, increasing PFOA concentrations intensified electrostatic repulsion, which reduced the removal efficiency of PS-MPs from 36.24 % to 10.43 % as the PFOA concentration increased from 0 to 10 mg/L. Furthermore, among the tested models (Thomas, Yoon-Nelson and BDST), the Thomas model best fitted the fixed-bed adsorption data for PS-MPs, PFOA, and composite contamination.
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RSC Advances
·
2025
·Vol. 15
·期 34
·28298-28312
·
IF 4.6
Fan Yang,Hongchi Liu,Qian Luo,Hao Deng,Rongrong Zhang,Yi Yang,Hong Yang,Huaying Wu,Xiaojun Tao
In this study, the amphiphilic polymer HA–ANI, formed by grafting hyaluronic acid (HA) and 6-(2-nitroimidazolyl)hexylamine (ANI), was self-assembled in water to form nanoparticles (NPs), which were modified to obtain dual drug-loaded nanoparticles (P/I NPs) by dialysis loading of paclitaxel (PTX) and IR780. Electron microscopy and dynamic light scattering (DLS) results showed that the P/I NPs presented a near-spherical shape with a size of 221.10 ± 2.31 nm. The drug loading and encapsulation rates of PTX in P/I NPs were 22.73% and 89.23%, respectively, and those of IR780 were 1.11% and 42.44%, respectively. In vitro release experiments demonstrated that NADPH could accelerate the drug release from the NPs. Under the irradiation of an NIR laser, the temperature of the P/I NPs increased significantly. In an in vitro cellular assay treating 4T1 cells for 24 h, the cellular uptake rate of NPs could reach 91.50 ± 3.51%, the 4T1 cell migration rate was 2.68 ± 0.34%, the cell viability was 39.96 ± 0.55%, and the apoptotic cell death rate was 13.93 ± 0.42%. In an in vivo anti-tumor experiment, the inhibition rate of the P/I NPs towards tumors was up to 35.44%; the fluorescence intensity at the tumor site gradually increased with time, and the maximum value appeared within 24 h, indicating that the P/I NPs had a targeting function. The results of H&E staining showed that there was no obvious pathological damage to the main organs of the mice in each group, that means there were no obvious side effects.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 22
·1-13
·
IF 2.8
Ma Kangrui,Wu Jiawen,Wei Derong,Chen Jin,Rong Xuanting,Ding Ruyun,Gu Jia,Ma Xuetiao,Zheng Hui
With the development and use of the electronic and electrical equipment, solving electromagnetic pollution has become a top priority for human health. In this work, ternary co-doped (Ca 2 ⁺, Cu 2 ⁺, Sn 4 ⁺) ions were incorporated into M-type hexagonal barium ferrite (Ba 1-x Ca x Fe 11.6 Cu 0.2 Sn 0.2 O 27 ), and the effects of varying Ca 2 ⁺ doping levels on the crystal structure, surface morphology, and electromagnetic characteristics were thoroughly investigated. Structural characterizations confirms that Ca 2+ substitutes Ba 2+ sites, decreasing the grain size and lattice values while increasing the lattice strain. At x = 0.15, the Ba 1-x Ca x Fe 11.6 Cu 0.2 Sn 0.2 O 27 ferrite achieves the maximum value of saturation magnetization of 67.7 emu/g, the highest RL min value of -44.2 dB@14.3 GHz and effective absorption bandwidth of 3.04 GHz, showing potential as an effective material for absorption applications.
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