Longevous Protic Hybrid Supercapacitors Using Bimetallic Prussian Blue Analogue/rGO-Based Nanocomposite Against MXene Anode.

MXenes exhibit a unique combination of properties-2D structure, high conductivity, exceptional capacity, and chemical resistance-making them promising candidates for hybrid supercapacitors (HSCs). However, the development of MXene-based HSCs is often hindered by the limited availability of cathode materials that deliver comparable electrochemical performance, especially in protic electrolytes. In this study, this challenge is addressed by introducing a durable protic HSC utilizing a bimetallic Prussian Blue Analogue (PBA) decorated on reduced graphene oxide (rGO) as a nanocomposite cathode paired with a single-layered TiCT MXene (SL-MXene) anode.

Response of particle-attached and free-living bacterial communities to Microcystis blooms.

The massive proliferation of Microcystis threatens freshwater ecosystems and degrades water quality globally. Understanding the mechanisms that contribute to Microcystis growth is crucial for managing Microcystis blooms. The lifestyles of bacteria can be classified generally into two groups: particle-attached (PA; > 3 µm) and free-living (FL; 0.

Dynamic response of bacterial communities to Microcystis blooms: A three-year study.

Although nutrient availability is widely recognized as the driving force behind Microcystis blooms, identifying the microorganisms that play a pivotal role in their formation is a challenging task. Our understanding of the contribution of bacterial communities to the development of Microcystis blooms remains incomplete, despite the fact that the relationship between Microcystis and bacterial communities has been extensively investigated. Most studies have focused on their interaction for a single year rather than for multiple years.

Antibody-free and selective detection of okadaic acid using an affinity peptide-based indirect assay.

Okadaic acid (OA) is a type of marine biotoxin produced by some species of dinoflagellates in marine environments. Consumption of shellfish contaminated with OA can cause diarrhetic shellfish poisoning (DSP) in humans with symptoms that typically include abdominal pain, diarrhea and vomiting. In this study, we developed an affinity peptide-based direct competition enzyme-linked immunosorbent assay (dc-ELISA) for the detection of OA in real samples.

Sensitive Detection of BVDV Using Gold Nanoparticle-Modified Few-Layer Black Phosphorus with Affinity Peptide-Based Electrochemical Sensor.

The lethality of the bovine viral diarrhea virus (BVDV) in cattle involves inapparent infection and various, typically subclinical, syndromes. Cattle of all ages are vulnerable to infection with the virus. It also causes considerable economic losses, primarily due to reduced reproductive performance.

The cyanobactericidal bacterium Paucibacter aquatile DH15 caused the decline of Microcystis and aquatic microbial community succession: A mesocosm study.

Microcystis blooms pose a major threat to the quality of drinking water. Cyanobactericidal bacteria have attracted much attention in the research community as a vehicle for controlling Microcystis blooms because of their ecological safety. Nonetheless, most studies on cyanobactericidal bacteria have been conducted on a laboratory scale but have not been scaled-up as field experiments.

gen. nov., sp. nov., a new member of the order , isolated from a freshwater aquarium.

A novel bacterium, strain SJAQ100, was isolated from a freshwater aquarium and was characterized taxonomically and phylogenetically. Strain SJAQ100 was a Gram-stain-negative, aerobic, rod-shaped and non-motile bacterium. The strain grew optimally with 0 % NaCl and at 25-37 °C on Reasoner's 2A agar.

Biosynthesis of a Metal Nanoparticle Encapsulated in Alginate Gel for Imageable Drug-Delivery System.

Development of drug-delivery systems that allow simultaneous imaging has gained much interest. We report a novel strategy to encapsulate metal nanoparticles (NPs) within alginate gel for imaging. The cell lysate of recombinant strain, expressing phytochelatin synthase and metallothionein genes, was encapsulated within the alginate gel.

Facile synthesis of carbon dots from Tagetes erecta as a precursor for determination of chlorpyrifos via fluorescence turn-off and quinalphos via fluorescence turn-on mechanisms.

Convenient one-pot synthetic route for the fabrication of carbon dots (CDs) from Tagetes erecta flower (TEF), named as "TEF-CDs', through solvo(hydro)-thermal carbonization of the TEF was developed. The TEF-CDs revealed high selectivity towards chlorpyrifos and quinalphos, acting as a fluorescent probe. The CDs synthesized from T.

sp. nov. isolated from culture of microalga sp.

A novel Gram-stain-negative, aerobic, non-spore-forming, non-motile, and rod-shaped bacterium, strain ETT8 was isolated from a chemostat culture of microalga sp. YC001. Optimal growth was with 0-2% NaCl and at 25-37 °C on R2A medium.

Fluorescence detection of histamine based on specific binding bioreceptors and carbon quantum dots.

Histamine is primarily found in spoiled food and often used as an indicator of food safety. Compared to various existing methods for analyzing histamine, high-performance liquid chromatography (HPLC) which is accurate but time-consuming, and immunochemical methods that are difficult to produce high specificity and affinity antibodies towards small molecules have been used. In this study, we developed a newly designed, sensitive, and selective fluorescence detection platform for histamine sensing, utilizing carbon quantum dots (CQDs) and synthetic peptides.

Fabrication of a paper strip for facile and rapid detection of bovine viral diarrhea virus signal enhancement by copper polyhedral nanoshells.

The detection of bovine viral diarrhea virus (BVDV), which is a pathogen inducing fatal gastrointestinal disease in cattle, is becoming a momentous issue in the livestock farm. In that, BVDV is related to inapparent infection and various diseases with high transmissibility; it has also led to considerable economic losses. In this study, a simple dot-blotting method was devised to construct a rapid screening system for BVDV.

Cu-nanoflower decorated gold nanoparticles-graphene oxide nanofiber as electrochemical biosensor for glucose detection.

A novel electrospinning approach is proposed for the fabrication of copper (Cu)-nanoflower decorated gold nanoparticles (AuNPs)-graphene oxide (GO) nanofiber (NF) as an electrochemical biosensor for the glucose detection. In this study, GO was mixed with poly(vinyl alcohol) (PVA) and used as a fiber precursor, which greatly improves the electrochemical properties. The above solution was uniformly coated onto the surfaces of gold chip to form GO NFs via electrospinning.

Morphological evolution of upconversion nanoparticles and their biomedical signal generation.

Advancements in the fabrication of upconversion nanoparticles (UCNPs) for synthetic control can enable a broad range of applications in biomedical systems. Herein, we experimentally verified the role of the hydrothermal reaction (HR) time in the synthesis of NaYF:20%Yb/3%Er UCNPs on their morphological evolution and phase transformation at different temperatures. Characterizations of the as-prepared UCNPs were conducted using X-ray diffraction (XRD), electron microscopy and spectroscopy, and thermogravimetric and upconversion (UC) luminescence analysis.

Development of a rapid and sensitive electrochemical biosensor for detection of human norovirus via novel specific binding peptides.

Human noroviruses cause acute foodborne gastroenteritis outbreaks worldwide. In this study, a highly sensitive and selective electrochemical biosensor was fabricated for the detection of human norovirus using novel peptides as recognition elements. The electrochemical biosensor was fabricated by assembling of eight novel peptides separately on the gold electrode and investigated their efficiencies for sensing human noroviruses.

Hexagonal tungsten oxide nanoflowers as enzymatic mimetics and electrocatalysts.

Tungsten oxide (WO) has been widely studied for versatile applications based on its photocatalytic, intrinsic catalytic, and electrocatalytic properties. Among the several nanostructures, we focused on the flower-like structures to increase the catalytic efficiency on the interface with both increased substrate interaction capacities due to their large surface area and efficient electron transportation. Therefore, improved WO nanoflowers (WONFs) with large surface areas were developed through a simple hydrothermal method using sodium tungstate and hydrogen chloride solution at low temperature, without any additional surfactant, capping agent, or reducing agent.