Advanced Materials Interfaces最新文献

This study presents the development of multifunctional bioactive coatings composed of bioglass, vitamin D3, and melittin, deposited on titanium substrates using the Matrix-Assisted Pulsed Laser Evaporation technique. The goal is to enhance the biological and physicochemical performance of titanium implants through improved osseointegration, corrosion resistance, and antibacterial activity. Comprehensive characterization reveals that the composite coatings exhibited excellent chemical integrity and favorable micro/nanostructured morphology, promoting cellular adhesion and viability. Electrochemical analyses demonstrate that the bioglass, vitamin D3, and melittin composite coating significantly improves the corrosion resistance of titanium in simulated body fluid, indicating long-term material stability. Biological assays confirm the coatings’ biocompatibility and their ability to support osteogenic differentiation without inducing cytotoxic or immunotoxic effects. Moreover, the laser obtained coatings show a sustained release of active compounds over 7 weeks and robust antibiofilm activity against pathogens such as S. aureus, P. aeruginosa, and E. coli. These results highlight the synergistic potential of bioglass, vitamin D3, and melittin in addressing critical challenges in implantology, positioning these coatings as a promising strategy for next-generation biomedical implants with enhanced functionality and longevity.

In this work, a novel nanosized Ti₃C₂ MXene-supported Au@Ag nanocube catalyst synthesized via a three-step process is reported. The Au@Ag nanocubes are selected for their synergistic properties, combining the electron-donating ability of Ag with the catalytic stability of Au, thereby enhancing electron transfer and accelerating reduction reactions. Nanosized Ti₃C₂ MXene served as a support owing to its high surface area, conductivity, and abundant active sites, promoting strong metal-support interaction and uniform nanocube dispersion. The catalysts are applied for rapid aqueous-phase reduction of nitroaromatics, including 4-nitrophenol (4-NP), 4-nitroaniline (4-NA), and 4-nitrobenzaldehyde (4-NB), using NaBH₄ at room temperature. The Au@Ag nanocubes (71.7 ± 0.3 nm) are well integrated with nanosized MXene (5.4 ± 0.2 nm), achieving superior catalytic efficiencies of 99.5% for 4-NP, 98.4% for 4-NA, and 84.5% for 4-NB within 1 to 2 min. The apparent rate constants (k_app) and turnover frequency (TOF) values reached 1.457 min⁻¹ and 73 h⁻¹ for 4-NP, 1.668 min⁻¹ and 145 h⁻¹ for 4-NA, and 1.137 min⁻¹ and 124 h⁻¹ for 4-NB, respectively. The nanocatalysts maintained excellent efficiency and stability over multiple recycling cycles. This study highlights the synergistic role of MXene-noble metal interactions in achieving efficient and sustainable catalytic reduction for environmental and industrial applications.

The emergence of real-time edge computing, artificial intelligence inference, and the continuous expansion of connected devices highlight the energy and latency constraints inherent in von Neumann circuits. Solution-processed halide perovskite quantum dots (QD) present a cost-effective option due to their flexible ABX₃ lattice, which allows collaborative electronic and ionic movement. This review initially examines the chemical principles, defect chemistry, and scalable methods such as hot injection or ligand-assisted precipitation that enhance phase purity and stability. The latest advancements in QD resistive memories, high-density crossbar matrices, neuromorphic synaptic elements, and perovskite-enabled field-effect transistors (FETs) are subsequently examined, emphasizing low-voltage operation, multilevel storage, and light-programmable conductance. The combination of transport mechanisms within the dots results in a significant ON/OFF ratio, prolonged retention capabilities, and gradual weight adjustments. The process of ionic drift also supports artificial synapses that emulate both short-term and long-term plasticity. Furthermore, integrating a switching layer with an organic channel results in programmable transistors that combine sensing, storage, and logic capabilities on flexible substrates. Halide perovskite QDs offer a flexible basis for the development of future low-power electronic materials and universal memory systems, facilitating widespread edge intelligence across both mobile and centered platforms.

Polyoxometalate-based aerogels, built through supramolecular interactions and metal coordination, have the potential to expand the field of smart materials. Here, the first example of the conversion of an Anderson-polyoxometalate-based organogel into a catalytically active aerogel is reported. The polyoxometalate organogel is formed by the reaction of ZnCl₂ with the TRIS-functionalized Anderson polyoxometalate (nBu₄N)₃[MnMo₆O₁₈{(OCH₂)₃CNH₂}₂]. Conversion of the organogel into the aerogel is achieved by a scalable freeze-drying procedure. A range of experimental methods are employed to follow the conversion of the POM into the organogel and aerogel, and insights into the role of the polyoxometalate, the metal salt, and the solvent are reported. The catalytic activity of the aerogel for selective alcohol oxidations (model compounds: benzyl alcohol, furfuryl alcohol, octanol) is reported together with initial recyclability studies. A conversion yield of 30% for benzaldehyde is achieved using aerogel as a catalyst. The study opens the door to (multi-)functional polyoxometalate-based aerogels for sorption, separation, catalysis, and energy technologies.

Amorphous Carbon Film

N-doped amorphous carbon films over large uniformity are synthesized at room temperature by using high ionization method. Synergistic improvement of sp²-C content, conductive pyrrolic N and pyridinic N benefits the stronger Cu²⁺ adsorption for the electrodes, revealing the ultra-sensitivity of 8×10⁻³ mM in 3.5 wt% NaCl and excellent long-term stability for marine corrosion monitoring. More details can be found in the Research Article DOI: 10.1002/admi.202500583 by Guanshui Ma, Aiying Wang, and co-workers.

The conduction band offset ϕ₀ at semiconductor surfaces and interfaces is a crucial parameter for quantum devices exploiting proximity-induced collective states such as superconductivity and magnetism. Recently, a method combining angle-resolved conduction band and core-level photoelectron spectroscopy was shown to yield band offsets aligning well with direct measurements of quantized conduction subband energies. However, the method was limited to surfaces with native accumulation layers. To address this shortcoming, a broader approach is proposed using angle-resolved valence band (VB) photoemission spectra, applicable to all semiconductor surfaces and interfaces. The goal is to identify the top of the VB by fitting a summation of contributions from individual layers to the VB signal at the Γ-point of the Brillouin zone. The technique achieves high accuracy, matching conduction subband-derived offsets for InAs(111) surfaces, with a deviation of only 51 meV – significantly better than conventional leading-edge methods. This approach is applied to systems relevant for topological superconductivity, extracting band offsets for InSb(110)/vacuum (ϕ₀ = 5 ± 21 meV), oxidized InSb(110) (ϕ₀ = 65 ± 69 meV), hydrogen-cleaned InSb(110) (ϕ₀ = 40 ± 63 meV), and InSb(110)/Al interfaces (ϕ₀ = 74 ± 13 meV), all of which lack observable accumulation layers by angle-resolved photoemission spectroscopy.

Surface-Engineered Solar Interfacial Evaporator

In article 10.1002/202500371, Xiayun Huang, Zhihong Nie, and co-workers review recent advances in surface-engineered solar evaporation, highlighting how polyelectrolyte-modified interfaces enhance solar-driven evaporation by disrupting hydrogen bonding and activating interfacial water, thereby enabling multifunctional purification and resource recovery systems. The cover design draws inspiration from traditional Chinese ink painting to symbolize the interplay between interfacial polyelectrolyte engineering and water activation, reflecting the harmony between materials science and nature.

Diamond holds exceptional promise in biosensing and quantum applications due to its unique physical, chemical, and electronic properties. This work addresses two critical aspects of diamond material utilization: surface functionalization for biosensors and surface roughness effects on fluorescence. First, this study introduces a novel biosensor approach, preparing oxygen-terminated diamond surfaces with controlled roughness (4 and 14 nm) and functionalizing them via esterification and silanization to generate DBCO-, thiol-, and epoxy-terminated surfaces. These are used to immobilize microarrays of fluorescent and non-fluorescent inks through click chemistry. Optimal click reaction strategies are identified for streptavidin detection, demonstrating a stable and sensitive biointerface. Second, the influence of surface roughness are investigated on fluorescence intensity, revealing that smoother surfaces (4 nm) exhibit significantly enhanced fluorescence compared to rougher surfaces (14 nm). This enhancement is attributed to reduced light scattering and defect density. This integrated approach advances diamond-based technologies by optimizing surface properties for both biosensing and photonic applications.

Amorphous Carbon Film

N-doped amorphous carbon films over large uniformity are synthesized at room temperature by using high ionization method. Synergistic improvement of sp²-C content, conductive pyrrolic N and pyridinic N benefits the stronger Cu²⁺ adsorption for the electrodes, revealing the ultra-sensitivity of 8×10⁻³ mM in 3.5 wt% NaCl and excellent long-term stability for marine corrosion monitoring. More details can be found in the Research Article DOI: 10.1002/admi.202500583 by Guanshui Ma, Aiying Wang, and co-workers.

This paper assesses whether copper surfaces retain their anti-viral efficacy, or whether this property is altered by exposure to the cleaning solutions of glutaraldehyde or NaClO, when used in high-touch surfaces that are regularly touched by many people. The results obtained show that copper has a virus titer of 50% after 30 and 60 min of exposure, but for Cu-30Ni, 50% is not reached until 70 and 80 min in artificial sweat after cleaning. Cu-30Ni has more effective resistance to tarnishing. Copper and nickel ions are released from Cu and Cu-30Ni samples in NaClO and glutaraldehyde solutions. A brief exposure to disinfectant solutions causes corrosion product formation on both Cu and Cu-30Ni surfaces, primarily composed of Cu₂O. In contrast, CuO and Cu(OH)₂ are the primary compounds that contribute to creating a thicker film formed as exposure time is increased. Phases containing chlorine are present in the corrosion product composition. This research introduces a new understanding of how copper and Cu-30Ni alloys respond to disinfectant solutions and humid air. The Cu-30Ni alloy offers superior corrosion resistance, retaining a shiny appearance, but simultaneously reflects an increased viral inactivation time due to a more stable oxide layer compared to pure copper.