Mussel foot proteins (MFPs) hold tremendous potential for various fields, but their low natural production yield presents a significant challenge for practical use. This study aims to explore ...possible solutions to overcome this limitation. While advanced recombinant technology can improve production efficiency, the resulting proteins lack the crucial chemical signature of mussel adhesion, 3,4-Dihydroxyphenylalanine (DOPA). Recent studies have shown that adhesives in nanoparticle form offer higher adhesion on solid surfaces, making them a promising alternative. Moreover, metal ions can enhance the cohesive forces between MFPs, leading to improved adhesion. In this study, we prepared MFP nanoparticles via spray-drying and tested their adhesion performance on surfaces with varying hydrophobicity using a universal testing machine. Our findings confirmed that MFP nanoparticles exhibit stronger adhesive performance than native MFPs, with metal ions contributing to even more robust adhesion. This study offers valuable insights into the adhesive behavior of MFPs in nanoparticle form with metal ions, presenting a potential solution to the challenge of low natural production yield of MFPs and the possibility of enhancing their adhesion properties in bio-adhesive materials.
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•A lack of yield limits the use of mussel foot proteins (MFPs).•Spray-dried MFP Nanoparticles adhere stronger than native MFPs.•Metal ions further enhance the adhesion of MFP particles.•MFP nanoparticles with metal ions offer a solution to MFPs' low natural yield.
Copper sulfide with ease fabrication, low cost and high electrocapacitive behavior has been widely applied as electrocapacitive material of battery supercapacitor hybrids (BSH). Several morphologies ...are designed to achieve excellent surface properties and high energy storage ability. Large specific surface area and vigorous pore structure are easier to attain by constructing three-dimensional morphologies especially with hollow features. In this study, novel copper sulfide plate-assembled hollow cages are synthesized using solution and hydrothermal processes. The cage structure is formed for copper sulfide prepared using different hydrothermal temperatures, but pure copper sulfide composition is obtained only by using hydrothermal temperature higher than 130 °C. With the preferable morphology and composition, the copper sulfide electrode synthesized using 130 °C (Cu–O–S130) shows the highest specific capacitance (CF) of 292.1 F/g at 20 mV/s and excellent rate performance. The Cu–O–S130 positive electrode and a carbon negative electrode are used to assemble a BSH, which reaches a maximum energy density of 22.4 Wh/kg at 500 W/kg and CF retention of 80% and Coulombic efficiency larger than 95% after 7000 cycles. This work provides blueprints for designing efficient morphology of copper sulfide to achieve excellent energy storage ability.
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•Novel CuS plate-assembled hollow cage is made via solution and hydrothermal process.•Hydrothermal temperature effects on physical and electrochemical property is studied.•Cu–O–S130 electrode shows highest specific capacitance (CF) of 292.1 F/g at 20 mV/s.•Battery supercapacitor hybrid shows maximum energy density of 22.4 Wh/kg at 500 W/kg.•CF retention of 80% and Coulombic efficiency higher than 95% in 7000 cycles are got.
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•A novel BSA/anti-PRL/EDC/NHS/MPA/Bi2S3/PPy/SPE immunoprobe used for the detection of PRL.•The synergistic effect of Bi2S3 and PPy enhanced the electrochemical performances.•The PRL ...immunosensor demonstrated a broad linear range with a low LOD (0.130 ng/mL).•The practical feasibility of the PRL was evaluated in mouse and human serum samples.
Prolactin (PRL) is produced by the pituitary gland and plays a vital role in the production of milk after a baby is born. PRL levels are normally elevated in pregnant and nursing women, and high levels of PRL in the human body cause hyperprolactinemia, infertility, galactorrhea, infrequent or irregular periods, amenorrhea, breast pain, and loss of libido. Accordingly, herein, a novel label-free immunosensor using a bismuth sulfide/polypyrrole (Bi2S3/PPy)-modified screen-printed electrode (SPE) for the fast and facile detection of the peptide hormone PRL. Bi2S3 nanorods were synthesized via a facile hydrothermal technique, and PPy was prepared by chemical polymerization method. Subsequently, the Bi2S3/PPy/ SPE was modified with 3-mercaptopropionic acid (MPA) and EDC/NHS. Owing to the cross-linking effect of EDC/NHS, antibody-PRL (anti-PRL) was firmly stabilized on the modified SPE surface. These layer-by-layer modifications enhanced the conducting properties, anti-PRL loading capacity, and sensitivity of the developed immunosensor. Under optimized conditions, the PRL immunosensor demonstrated a broad linear range of approximately 1–250 ng/mL, a low detection limit of approximately 0.130 ng/mL (3 × SD/b), good specificity, reproducibility, and stability. PRL was successfully evaluated in human and mouse serum samples, and the corresponding outcomes were compared with those of the electrochemical and ELISA methods.
Surface plasmon resonance (SPR) sensing is a real-time detection technique for measuring biomolecular interactions on gold surfaces. This study presents a novel approach using nano-diamonds (NDs) on ...a gold nano-slit array to obtain an extraordinary transmission (EOT) spectrum for SPR biosensing. We used anti-bovine serum albumin (anti-BSA) to bind NDs for chemical attachment to a gold nano-slit array. The covalently bound NDs shifted the EOT response depending on their concentration. The number of ND-labeled molecules attached to the gold nano-slit array was quantified from the change in the EOT spectrum. The concentration of anti-BSA in the 35 nm ND solution sample was much lower than that in the anti-BSA-only sample (approximately 1/100). With the help of 35 nm NDs, we were able to use a lower concentration of analyte in this system and obtained better signal responses. The responses of anti-BSA-linked NDs had approximately a 10-fold signal enhancement compared to anti-BSA alone. This approach has the advantage of a simple setup and microscale detection area, which makes it suitable for applications in biochip technology.
In this study, a novel Ce2MgMoO6/CNFs (cerium magnesium molybdite double perovskite decorated on carbon nanofibers) nanocomposite was developed for selective and ultra-sensitive detection of ...ciprofloxacin (CFX). Physical characterization and analytical techniques were used to explore the morphology, structure, and electrocatalytic characteristics of the Ce2MgMoO6/CNFs nanocomposite. The sensor has a wide linear range (0.005–7.71 μM and 9.75–77.71 μM), a low limit of detection (0.012 μM), high sensitivity (0.807 μA μM−1 cm−2 nM), remarkable repeatability, and an appreciable storage stability. Here, we used density functional theory to investigate CFX and oxidized CFX as well as the locations of the energy levels and electron transfer sites. Furthermore, the Ce2MgMoO6/CNFs-modified electrode was successfully tested in food samples (milk and honey), indicating an acceptable response with a recovery percentage and relative standard deviation of less than 4%, which is comparable to that of GC-MS. Finally, the developed sensor exhibited high selectivity and stability for CFX detection.
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•Electrochemical sensor was fabricated based on Ce2MgMoO6/f-CNFs nanocomposite.•This sensor determination of ciprofloxacin with low limit of detection (0.012 μM).•Wide linear range with excellent selectivity and stability was demonstrated.•Practicability of the developed sensor was estimated in milk and honey samples.
This article evaluates the fabrication technologies of titanium aluminide (Ti-Al) and its practical applications by comparing it with the well-known Ti-Al binary phase diagram and US patents. ...Meanwhile, by analyzing and discussing the various patented Ti-Al fabrication technologies and applications, this article discusses the applications of Ti-Al-based alloys, mainly in the aircraft field. The improved fabrication processes and new application technologies are under patent protection. These technologies are classified into six categories: basic research on Ti-Al-based alloys, powder metallurgy of Ti-Al-based alloys, casting and melting of Ti-Al-based alloys, PM and AM manufacturing methods for aircraft applications, other fabrication technologies by Ti-Al-based alloys, and self-propagating high-temperature synthesis (SHS) of Ti-Al-based alloys. By comparing the principles and characteristics of the above techniques, the advantages, disadvantages, and application fields of each are analyzed and their developments are discussed. Based on the characteristics of Ti-Al, new fabrication and application technologies can be developed, which can overcome the existing disadvantages and be used to form new aircraft components.
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•Dual Z-scheme Pr2Sn2O7/P@g-C3N4/SnS2 heterojunction by PS activation to removal of TC.•Over 89.48% of TC (75 mg/L) was degraded within 60 min at 0.03 g/L of photocatalyst.•A rate ...constant (0.0989 min−1) was calculated which is followed pseudo-first-order.•OH, SO4−, O2−, and 1O2 were the main radicals in the degradation system.•Kinetics, thermodynamics, DFT, and toxicity studies of TC were investigated.
In this study, a Pr2Sn2O7/P@g-C3N4/SnS2 ternary nanocomposite photocatalyst is obtained by hydrothermal synthesis followed by mechanical grinding. By separating electrons and holes (e−/h+) effectively through the dual Z-scheme heterojunction and activating persulfate (PS), the heterojunction demonstrated superior visible light-driven catalytic activity. Tetracycline (TC) was degraded (89.48%) in 60 min using 30 mg/L of ternary composite and 30 mg/L of PS. This system displayed the highest pseudo-first-order kinetic constant (0.0989 min−1 and R2 = 0.969). The electron paramagnetic resonance analysis showed that SO4−, OH, O2−, and 1O2 were involved in TC degradation. TC's vulnerability positions and degradation pathways were analyzed using DFT and gas chromatography-mass spectrometry analysis, while toxicity assessment software was used to determine the toxicity of intermediate products. Thus, Pr2Sn2O7/P@g-C3N4/SnS2 was established to be a promising photocatalyst template for pollutant remediation.
Post-implant inflammation is a leading factor in the failure of orthopedic implant surgery. Hydrogen therapy is viewed as a medium capable of reducing reactive oxygen species (ROS) to alleviate ...inflammatory responses. However, existing hydrogen therapy methods have limitations, often involving undesired inhalation, injection, or non-targeted exposure of hydrogen to the body. To address this, the concept of delivering hydrogen precisely using the implant itself has been conducted in this study. Traditional hydrogen treatments for metallic implant materials, such as 316 L stainless steel (316 L SS), can induce hydrogen embrittlement (HE), significantly restricting the potential applications of hydrogenated implants in the biomedical field. Therefore, in this study, the electrochemical cathodic hydrogen charging method was employed to diffuse a hydrogenated layer of approximately 216 ± 31 nm on the surface of 316 L SS. This renders the material minimized by HE and alters its surface properties. Through in vitro and in vivo experiments, an approximately 80 % free radical scavenging rate was achieved. Additionally, significant anti-inflammatory effects were observed in the histological analysis of Femur implantation. This demonstrates that the surface hydrogenation treatment can impart anti-inflammatory properties to metallic implant materials without compromising their inherent material properties, thereby enhancing the success rate of surgical procedures.
Schematic illustration of the hydrogenated 316 L stainless steel femoral implant prepared via cathodic charging technique, aimed at mitigating inflammatory response and augmenting osseointegration between the implant and surrounding tissues. Display omitted
•Hydrogen acts as a therapeutic approach for diseases and inflammation by mitigating oxidative stress.•An innovative surface hydrogenation treatment of 316 L SS implants, imparting anti-inflammatory properties.•The surface hydrogenation of 316 L SS can effectively eliminate reactive oxygen species and reduce inflammation.•Hydrogenated 316 L SS reduces the surface hardness and enhances its bonding strength with biological tissues.
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•A microfluidic synthesis process for CsPbBr3/Cs4PbBr6 NCs was optimized.•Colloidal CsPbBr3/Cs4PbBr6 NCs with the highest PLQY of 86.9% were obtained.•A luminescent ink was produced ...by the as-synthesized CsPbBr3/Cs4PbBr6 NCs.•The ink was used to print large high-resolution patterns and fabricate mini-LED.•The narrow green emission of the mini-LED well obeyed the Rec. 2020 standard.
Zero-dimensional Cs4PbX6 (X = Cl, Br, I) perovskite material is recognized as a potential luminescent material and host owing to its excellent optical properties. However, the synthesis of large-scale CsPbBr3/Cs4PbBr6 complex nanocrystals (NCs) is difficult, and their application in mini- or micro-LEDs remains limited. Herein, we applied a microfluidic system for a simple, continuous, and stable synthesis of CsPbBr3/Cs4PbBr6 NCs. The CsPbBr3/Cs4PbBr6 complex NCs were obtained after the optimization of the Cs/Pb precursor ratio and alkaline environment, and their photoluminescent quantum yield is up to 86.9%. These as-synthesized CsPbBr3/Cs4PbBr6 NCs were used to produce a luminescent ink with the optimization of different solvents. This ink was successfully used to print large and high-resolution patterns, and fabricated mini-sized color-converted LED. The narrow green emission of the LED well obeyed the requirements of the Rec. 2020 standard, demonstrating the potential of this material in the inkjet printing applications of color-converted mini- or micro-LED arrays.
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