Vertically aligned Au-coated ZnO nanorods (Au-ZnO NRs) were investigated as cheap, efficient and recyclable SERS-active substrates. The NRs prepared through a simple, low-temperature hydrothermal route made deposition of gold nanoislands by sputtering at room temperature. Optimized samples able to detect methylene blue over wide range low concentrations (from 1 × 10(-4) 10(-12) M), with good reproducibility. photocatalytic properties Au-ZnO exploited recycle these substrates UV-assisted...

A remarkable enhancement of Raman scattering is achieved by TiO2 shell-based spherical resonators in the absence plasmonic enhancers. This effect ascribed to synergistic combination high refractive index shell layer, multiple light through spheres, and related geometrical factors can be exploited fabricate a new generation self-diagnostic, recyclable SERS-active substrates.

Biosensing based on nanophotonic structures has shown a great potential for cost-efficient, high-speed and compact personal medical diagnostics. While plasmonic nanosensors offer high sensitivity, their intrinsically restricted resonance quality factors strong heating due to metal absorption impose severe limitations real life applications. Here, we demonstrate an all-dielectric sensing platform silicon nanodisks with optically-induced magnetic resonances, which are able detect concentration...

Valorisation of the urban plastic waste in high-quality recyclates is an imperative challenge new paradigm circular economy. In this scenario, a key role improvement recycling process exerted by optimization sorting. spite enormous developments achieved field automated sorting systems, quest for reduction cross-contamination incompatible polymers as well rapid and punctual unmatched has not been sufficiently developed. paper, we demonstrate that miniaturized handheld near-infrared (NIR)...

In this work, we assess three different methods for the extraction of pectin from waste orange peels, using water as extracting solvent. “Hot-water”, Rapid Solid Liquid Dynamic (RSLD) and microwave-assisted extractions have been compared evaluated in terms amount quality extracted pectin, well embodied energy. This analysis provides useful guidelines production food according to green procedures, enabling identification acidic “hot-water” most sustainable route.

Abstract Organic electrochemical transistors (OECTs) rely on volumetric ion‐modulation of the electronic current to provide low‐voltage operation, large signal amplification, enhanced sensing capabilities, and seamless integration with biology. The majority OECT technologies require multistep photolithographic microfabrication methods glass or plastic substrates, which do not an ideal path toward ultralow cost ubiquitous sustainable electronics bioelectronics. At same time, development...

This work presents a new and promising method to recover Li, Co, Mn, Ni from spent LIBs, based on hybrid heating mechanism, obtained by using microwave radiation. Due the presence of graphite, is induced interfacial polarization carbon atoms. The synergistic combination an external susceptor with graphite crucible. system allows reaching carbothermic reduction conditions black mass originating treatment only few minutes considering electromagnetic radiation power ⋜1000 W, without any other...

Interaction between nanoparticles and model lipid membranes from the molecular to mesoscale domains.

Abstract Oxygen evolution reaction (OER) is the most critical step in water splitting, still limiting development of efficient alkaline electrolyzers. Here we investigate OER activity Au–Fe nanoalloys obtained by laser‐ablation synthesis solution. This method allows a high amount iron (up to 11 at %) be incorporated into gold lattice, which not possible alloys synthesized other routes, due thermodynamic constraints. The Au 0.89 Fe 0.11 exhibit strongly enhanced comparison individual pure...

SiO2/TiO2 core/shell beads (T-rex) were designed, fabricated and tested for Raman detection of environmental CO2 under real-working conditions, as those encountered, example, in solar-to-fuel conversion reactions. The exploitation light trapping morphology dependent resonances was crucial extending the limit adsorbed on TiO2 surfaces. T-rex allowed achieving surface enhanced scattering (SERS) without using plasmonic metals showing high-efficiency, fast response reproducibility both air...

The eco-sustainable use of materials derived from agricultural and food processing waste will represent one the most stimulating challenges shortly. Chitin chitosan are two remarkable examples how molecules with high added value can be extracted waste, such as crustaceans’ shells, fungi, mollusks, etc. This Perspective summarizes current state knowledge about chitin extraction, production, hydrogel formation, highlighting environmental critical steps in common route (use strong acids basis,...

Graphene oxide/iron (III–VI) oxides nanocomposites have been produced with a fast and one-pot synthesis. K2FeO4 (Fe(VI)-based compound), obtained from dry synthesis, has used as green oxidant of graphite to produce graphene oxide, avoiding the use toxic permanganates. oxide flakes low oxidation degree decorated iron in one-step reaction. The material characterized by several techniques investigate structure (SEM, TEM analysis), composition (X-ray fluorescence, XPS, FTIR, UV–visible, Raman...

Identification of extracellular vesicle (EV) subpopulations remains an open challenge. To date, the common strategy is based on searching and probing set molecular components physical properties intended to be univocally characteristics target subpopulation. Pitfalls include risk opt for unsuitable marker - which may either not represent subpopulation or also cover other unintended need use different characterization techniques equipment. This approach focused specific markers result...

Abstract Intelligent objects, autonomous factories and humans browsing the real world with artificial technology‐based capabilities is not movie set of a new saga but what going to happen next‐generation electronics bioelectronics fabricated emerging materials, technologies, devices. The emergence (bio)electronics as ubiquitous feature an advanced modern society posing challenge managing ever‐increasing amount e‐waste, also making recovery more difficult. Thus, design approaches are required...

Abstract Plasmonic metal/semiconductor nanocomposites promise to be a breakthrough for boosting and investigating photon‐assisted processes at the nanoscale, with exciting perspectives energy conversion catalysis. However, efficiency selectivity of these surface are still far from being controlled. Here, shown first time, is new class photocatalyst which based on synergistic combination bowtie‐like gold nanoantennas SiO 2 /TiO core/shell oxide beads. These systems exploited as efficient...

Abstract Here we investigated the dynamics of OER activity NiFe (90/10) catalysts over 1000 potential sweep cycles as a function their mass loading. Over twenty different films with loading in 10 ng/cm 2 –30 μg/cm range were deposited by Supersonic Cluster Beam Deposition (SCBD), allowing to study progress sub‐monolayer, monolayer and multilayer regimes. Upon prolonged sweeps electrocatalytic performances multilayers decreased, while those monolayers significantly improved. The best balance...

A Ce2Zr2O8 mixed oxide was prepared, and the influence of redox treatments on its reduction behavior systematically analyzed. The temperature found to change application cycles under severe conditions, with final appearance temperature-programmed profiles dictated by exact conditions employed in cycle (temperature treatment concentration H2). In addition, necessary reducing oxidizing parts showed interdependence. vary from a single high-temperature peak low-temperature peak, via double-peak...