Polymers
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2022
·Vol. 14
·期 24
·5348
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IF 4.967
Shuqiong Liu,Wanzhu Li,Zhenyi Xu,Jiapeng Hu,Fangfang Wu,Yuying Zheng
To promote the bone repair ability of drug-loaded scaffolds, poly(lactic acid) (PLA)/graphene oxide (GO)/Salvianolic acid B (Sal-B)/aspirin (ASA) dual drug-loaded biomimetic composite scaffolds were prepared. The results showed that the addition of these two drugs delayed the gel formation of the composite system, but a biomimetic nanofiber structure could still be obtained by extending the gel time. The addition of Sal-B increased the hydrophilicity of the scaffold, while an increase in ASA reduced the porosity. Dual drug-loaded scaffolds had good haemocompatibility and synergically promoted the proliferation of MC3T3-E1 cells and enhanced alkaline phosphatase activity. Sustained-release experiments of the two drugs showed that the presence of ASA slowed the cumulative release of Sal-B, while Sal-B promoted the release of ASA. Kinetic modeling showed that the release of both drugs conforms to the Korsmeyer–Peppas model, but Sal-B conforms to the Fick diffusion mechanism and ASA follows Fick diffusion and carrier swelling/dissolution.
研究领域:
生物材料学
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骨修复研究
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药物释放系统
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2024
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IF 4.1
Jiarong Wu,Xinyu Li,Dayong Fan,Ming Li,Hongyu Zhu,Shuai Li
Bismuth vanadate (BiVO 4 ) is a promising metal oxide photoabsorber for photoanode applications but is limited by its relatively short hole diffusion length resulting in severe charge complexation and limited performance. Herein, Ag 3 PO 4 was compounded on BiVO 4 through photodeposition of Ag followed by solution oxidation. The annealing of the composite BiVO 4 /Ag 3 PO 4 heterojunction at 400 °C precipitated some Ag from Ag 3 PO 4 on BiVO 4 /Ag 3 PO 4 to form a new ternary photoanode BiVO 4 /Ag 3 PO 4 /Ag. Compared to the unannealed sample, the light trapping and crystal quality enhanced, resulting in increased photocurrent density of the annealed BiVO 4 /Ag 3 PO 4 photoanode (4.46 mA cm −2 ) by 59.9 % when compared to the unannealed photoanode (2.79 mA cm −2 ). To further optimize the photoanode, co-catalyst iron hydroxyl oxide (FeOOH) was deposited to yield BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode with maximum photocurrent density of 4.71 mA cm −2 at 1.23 V (vs. reversible hydrogen electrode, V RHE ), equivalent to about 3.7-fold the value of BiVO 4 photoanode. The photoanode maintained 90.8 % of its initial current density after 3 h stability tests. Besides, the photoelectrocatalytic degradation of Rhodamine B pollutant by BiVO 4 /Ag 3 PO 4 /Ag and BiVO 4 /Ag 3 PO 4 /Ag/FeOOH photoanode showed performance enhancement when compared to BiVO 4 /Ag 3 PO 4 . Overall, the proposed strategy looks very promising for the rational fabrication of high-efficiency heterojunction photoanodes.
研究领域:
材料科学
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光电化学
·
催化
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环境科学
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DOI
高影响因子
TALANTA
·
2018
·
IF 4.244
Yang Zhang,Lu Yang,Yan-Hua Wang,Ai-Hua Liu
Highly porous carbon-based materials with 3-dimensional mesh structure as an adsorbent that have been used extensively in environmental treatment, however, it remains challenging to improve performance and to reduce costs. A novel Mo x P y nanoparticles anchored mesh structural biomass carbon (Mo x P y /MSBC) was prepared from renewable seaweed and applied as an efficient absorbent for the selective adsorption of dyes . The mesh structure of provides a powerful support for the Mo x P y nanoparticles and could protect the nanoparticles from being lost. Meanwhile, a better 3D mesh structure obtained endows MSBC a high surface area with a large number of active interaction sites. The Mo x P y /MSBC composite exhibits excellent selective adsorption properties and high adsorption capacity for methyl blue (MB) and rose bengal (RB) at distinctive pH and rapid removal rates within 5 min at 298 K. The adsorption kinetics , isotherm and thermodynamics were determined. In addition, the regeneration of the Mo x P y /MSBC could be accomplished in only three minutes through a simple method by using the absolute alcohol. Therefore, the simple synthesis, high efficacy, excellent selectivity and regenerability in aqueous medium enable the hybrid nanocomposites as excellent candidates to selective removal processes of dyes.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
AICHE JOURNAL
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2026
·
IF 4.4
Chi Wang,Juncheng Wu,Yi Cheng,Jinshu Tian,Chong Hao,Guan Sheng,Lingkun Wu,Yonghe Li,Zailai Xie
Supported boron oxide catalysts show great potential in propane oxidative dehydrogenation yet suffer severe hydrolytic deactivation at high temperatures. Here, an interfacial bond gradient strategy is proposed to stabilize boron-based catalysts. CeO 2 anchored on γ-Al 2 O 3 modulates local bonding and firmly immobilizes active boron species. The catalyst achieves over 40% propane conversion, 80% olefin selectivity and superior stability within 200 h. Formed B-O-Ce interfaces trigger oriented electron transfer and enhance surface hydrophobicity, raising hydrolysis activation energy and suppressing active site loss. This interfacial engineering offers a universal route to design robust catalysts for alkane transformation.
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产品关联
DOI
高影响因子
ACS Catalysis
·
2026
·
IF 13.6
Guilan Xu,Huan Liu,Yunlong Zhang,Wangwang Zhang,Pan Gao,Guangjin Hou,Liang Yu,Xiaoju Cui,Dehui Deng
The photocatalytic conversion of CH4 and O2 to C1 oxygenates represents a promising route for chemical synthesis, yet current systems predominantly depend on metal-based catalysts to achieve efficient light harvesting and charge separation. Herein, we report a metal-free alternative using boron confined within g-C3N4 (B/C3N4), which achieves a C1 oxygenates production rate of 28.1 μmol gcat.–1 h–1 with a 60% improvement in activity compared with pristine g-C3N4. Combined experimental and theoretical investigations reveal that boron confinement in g-C3N4 induces orbital delocalization, which enhances charge carrier separation and creates dual-functional nitrogen sites that facilitate CH4 oxidation and O2 reduction reactions. Delocalized nitrogen sites with the lowest unoccupied molecular orbital are responsible for reducing O2 to •OH radicals, whereas counterparts with the highest occupied molecular orbital facilitate the oxidation of CH4 to •CH3 radicals. The resulting •OH radicals can either oxidize CH4 to generate •CH3 or directly combine with transient •CH3 radicals, initiating a cascade reaction that sequentially yields CH3OH, HOCH2OH, and HCOOH.
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DOI
高影响因子
APPLIED GEOCHEMISTRY
·
2026
·
IF 3.5
Wenteng Chu,Runshen Feng,Cheng Wang,Yanting Pan,Hong Su,Feng Jiang,Xiaoming Wang,Hui Yin,Xionghan Feng
Vernadite is often used for pollutant adsorption, oxidation and interfacial catalysis due to its diverse structure, high reactivity and environmental friendliness. Rhodamine B was employed as a model organic contaminant in this study to investigate the capability of Vernadite-activated sulfite for organic pollutant degradation and to elucidate the activation mechanism of sulfite in the Vernadite/sulfite system. Vernadite was able to partially decolorize approximately 90.3% of Rhodamine B (RhB) due to its strong surface activity. Upon the addition of sulfite, RhB was fully degraded within 20 minutes, and the solution was observed to change from red to colorless. It was discovered that dissolved oxygen was crucial to the process. As the sulfite content rose, the degradation efficiency first rose and then decreased, but it rose as the mineral dosage increased. The system was effective within the pH range of 3-7, though efficiency declined as pH increased. The presence of common coexisting ions had minimal impact on the performance, particularly in the presence of humic acid (HA), where degradation remained effective. Mn (III) and singlet oxygen ( 1 O 2 ) were confirmed to be the primary reactive species in charge of RhB degradation by electron paramagnetic resonance (EPR) and quenching studies. These results demonstrate the possible uses of minerals containing manganese dioxide as heterogeneous catalysts for environmental remediation under realistic wastewater treatment conditions.
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高影响因子
DIAMOND AND RELATED MATERIALS
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2026
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IF 5.2
Qingwang Liu,Xiangping Pan,Jiewei Rong,Yuxin Zheng,Ruilin Guo,Mai Xu
Antibiotics pose a significant threat to ecosystems and human health, creating an urgent need to develop highly efficient visible-light-driven degradation catalytic technologies. In this study, we synthesized a CuO/B-g-C 3 N 4 (CO/BCN) direct Z -scheme heterojunction composite photocatalyst based on non-metallic doping and heterojunction engineering. XRD, TEM, and XPS analyses indicate that the material exhibits good crystallinity and forms a tightly bound interfacial heterostructure. Photoelectronic measurements reveal a significant enhancement in visible light absorption and an improvement in carrier separation efficiency. Under illumination, the 0.2-CO/BCN system achieved 97.6% degradation of tetracycline (TC) within 120 min. The performance improvement is attributed to the Z -scheme heterojunction, which facilitates charge transport and suppresses the recombination of photo-generated electrons and holes. Radical trapping, EPR and work function characterization further elucidated the reaction mechanism. This study provides a theoretical basis and experimental reference for regulating energy levels through elemental doping and constructing heterojunction composite photocatalytic materials. Download: Download high-res image (266KB) Download: Download full-size image
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高影响因子
Materials
·
2026
·Vol. 19
·期 12
·2566
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IF 3.7
Hongjie Li,Shaomu Wen,Yunqing Xia,Jizhong Yang,Chunyong Gu,Honglin Yang
HighlightsFabricate Ni-B/La2O3composite coatings by co-depositing nano-La2O3particles into an electroless Ni-B alloy matrix.The optimal concentration was determined to be 8 g·L−1, evidenced by the best anti-corrosion property.The results conclusively show that nano-La2O3reinforcement effectively enhances the corrosion resistance of electroless Ni-B alloy coatings.This study was conducted to explore how varying the concentration of nano-La2O3particles in the plating bath influences the morphology, constitution, and corrosion resistance of Ni-B composite coatings deposited on N80 carbon steel via electroless plating. The novelty of this work lies in the systematic investigation on the co-deposition behavior and grain refinement mechanism of nano-La2O3in electroless Ni-B system, which has been rarely reported in previous studies. The microstructure and chemical composition of the coatings were characterized through a combination of SEM, EDS, XPS and XRD analyses. SEM confirmed that a dense Ni-B/La2O3composite coating was formed, with a uniform thickness of approximately 10 μm, and the nano-La2O3particles were evenly distributed. XPS analysis verified the presence of B, C, O, Ni and La, while XRD analysis revealed a refinement in crystalline size due to the addition of the nanoparticles. The corrosion resistance enhancement mechanism is attributed to the triple synergistic effect: nano-La2O3pins grain boundaries and refines Ni-B grains to the minimum average size of 12.943 nm at the optimal concentration of 8 g·L−1; the refined grain structure promotes the formation of a continuous and dense Ni(OH)2passive film; the uniformly dispersed nanoparticles act as physical barriers to block the penetration of corrosive media. Electrochemical measurements demonstrated that this coating exhibited outstanding anti-corrosion performance, as confirmed by a remarkably positive corrosion potential (Ecorr= −0.37189 V) and a minimal corrosion current density (Icorr= 3.7524 μA/cm2). The results conclusively show that nano-La2O3reinforcement effectively enhances the corrosion protection performance of electroless Ni-B alloy coatings.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiayan Liang,Hongyu Zhang,Jian Zhang,Xuwen Wang,Yangming Wang,Hao Bai,Yi Rong,Kaifeng Lin,Debin Xia,Yulin Yang
Pomegranate-like B@(NH 4 ) 2 SiF 6 @LiClO 4 enables ordered boron combustion. • Sequential fluorination–oxidation suppresses oxide re-passivation. • The optimized composite shows faster ignition and stronger flames. Boron suffers from severely limited combustion efficiency due to the kinetic barrier imposed by its native oxide layer. In this work, a pomegranate-inspired B@(NH 4 ) 2 SiF 6 @LiClO 4 composite was fabricated via a two-step solvent evaporation-induced self-assembly strategy, enabling highly dispersed reactive domains and intimate interfacial contact. The distinctive pomegranate-inspired architecture establishes particle-level spatial organization of the reactive components, while their distinct thermal activation windows provide the temporal basis for a proposed spatiotemporally coordinated reaction pathway. TG-DSC and TG-FTIR analyses reveal that fluorine-containing species derived from (NH 4 ) 2 SiF 6 evolve prior to LiClO 4 melting and major oxidizer release, supporting a proposed sequential fluorination-oxidation pathway involving early fluorine-mediated interfacial modification followed by oxidizer-driven boron oxidation. At an optimal (NH 4 ) 2 SiF 6 content of 10 wt%, the ignition delay and combustion duration are reduced by 15.47% and 68.22%, respectively, compared with B@LiClO 4 , demonstrating substantially improved ignition and combustion kinetics. Combined structural, thermal, and combustion analyses support the proposed spatiotemporally coordinated fluorination-oxidation pathway arising from the coupling of particle-level organization and temporally separated thermal events. This work provides a particle-level interfacial engineering strategy for coordinating fluorination and oxidation in high-performance boron-based energetic systems. A pomegranate-inspired B@(NH₄)₂SiF₆@LiClO₄ enables spatiotemporally ordered boron combustion by coupling fluorination and oxidation reactions within confined nanoscale domains. Sequential interfacial activation and molten-salt-mediated oxygen transport promote continuous reaction propagation and suppress oxide re-passivation, resulting in faster ignition, intensified flame propagation, and more efficient energy release compared with conventional physically mixed systems. Download: Download high-res image (176KB) Download: Download full-size image
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Li Zhu,Sun Ningxin,Li Shiwei,Yang Jiaao,Guo Yi,Dong Lijie
Biofouling on marine aquaculture nets poses significant challenges to the economic viability and environmental sustainability of mariculture. This study developed a novel composite coating PS- b -PDMS/CaO 2 on the net surface by incorporating oxygen-releasing calcium peroxide nanoparticles (CaO 2 NPs) into a polystyrene-polydimethylsiloxane block copolymer (PS- b -PDMS). This coating synergistically combines low surface energy with a sustained oxygen-enriched microenvironment and enhanced reactive oxygen species (ROS) generation, resulting in significantly enhanced antifouling performance. Experiments demonstrated that the coating achieved outstanding antifouling efficacy, with antibacterial rates exceeding 99% against Escherichia coli, Staphylococcus aureus, and the marine bacterium Pseudomonas aeruginosa, anti-diatom adhesion rates of 92.18%, and anti-protein adhesion rates of 96.82%, with an optimal loading of 0.6 wt%. Moreover, the coating improved the mechanical properties (~ 35.53 MPa) while preserving the low-surface-energy characteristics and sustained oxygen release for over 60 h. A 90-day marine field test verified minimal biological fouling on the PS- b -PDMS/CaO 2 -0.6 coating surface, showing excellent real-sea antifouling performance and structural stability, indicating the long-term serviceability of aquaculture nets in marine environments. This study proposes a novel technical pathway for the development of environmentally friendly, long-term stable, and high-performance antifouling and antibacterial coatings that can effectively adapt to complex marine environments. Graphical abstract
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高影响因子
CHEMICAL PAPERS
·
2025
·
IF 2.5
Li Liuqing,Wei Zhengwen,Lü Xiang-fei,Jiang Zhen-Yi,Wang Wei
By utilizing the in situ polymerization reaction of o-tolidine and p-phthalaldehyde, magnetic inorganic/organic hybrid materials were synthesized. Various characterization techniques were employed to analyze the morphology and phase composition of the materials. Using Rhodamine B as a characteristic pollutant, it was found that the maximum adsorption capacity of the materials reached 171.59 mg/g. Density functional theory (DFT) calculations were conducted on different adsorption configurations, revealing that the adsorption process is primarily dominated by π–π interactions, alongside electrostatic attraction and donor–acceptor interactions. This provides a theoretical basis for the subsequent design and preparation of more efficient adsorption materials.
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DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Yanzhi Yang,Zhengyi Zhao,Xin Yu,Minghong Long,Zhiyong Yan,Xuechun Xiao
ABO 3 -type perovskite oxides have found extensive applications in various fields electrocatalysis and photocatalysis owing to their remarkable advantages such as facile synthesis, low cost, and high thermal stability. As catalytic materials, perovskites possess the ability to catalyze both oxidation and reduction reactions. The thermal decomposition process of AP involves a significant number of redox reactions. However, the utilization of perovskite catalysts for AP decomposition has received relatively limited research attention. In this study, LaMO 3 (M = Co, Fe, Al) perovskite catalysts were synthesized through the sol-gel method. The aim was to explore the disparities in band gap values and electrical conductivity caused by the substitution of different B-site elements. Subsequently, based on these properties, the catalytic mechanisms of AP thermal decomposition were analyzed. The results revealed that LaCoO 3 exhibits exceptional catalytic performance. The addition of LaCoO 3 significantly decreased the decomposition temperature of AP from 473.3 °C to 323.0 °C, lowered the activation energy from 465.5 kJ mol −1 to 182.9 kJ mol −1 , and increased the heat release from 88.8 J/g to 942.5 J/g. A series of characterizations, including XPS, EPR, DFT, EIS and UV–vis were performed on the three catalysts. The results demonstrate that perovskite catalytic materials with a narrower band gap and a higher concentration of oxygen vacancies exhibit superior electron transport efficiency and significantly enhanced thermal catalytic performance toward AP, thereby elucidating the underlying mechanism responsible for the differences in catalytic activity among the materials.
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高影响因子
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