Quasi-spherical undoped ZnO and Al-doped nanoparticles with different aluminum content, ranging from 0.5 to 5 at% of Al respect Zn, were synthesized. These evaluated as photocatalysts in the photodegradation Rhodamine B (RhB) dye aqueous solution under UV-visible light irradiation. The nanopowder annealed at 400 °C resulted highest degradation efficiency ca. 81% after 4 h green irradiation (525 nm), presence mg catalyst. samples characterized using ICP-OES, PXRD, TEM, FT-IR, 27Al-MAS NMR,...

A combined experimental and first-principles study is performed to the origin of conductivity in ZnO:Al nanoparticles synthesized under controlled conditions <italic>via</italic> a reflux route using benzylamine as solvent.

This work explores the synthesis and characterization of undoped ZnO, Ga-doped ZnO (Ga:ZnO), γ-Ga2O3 quasi-spherical nanoparticles their catalytic activity in Rhodamine B photodegradation under UV–visible light exposure. Gallium dopant incorporation into Ga:ZnO was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES), Fourier transform infrared (FT-IR), powder X-ray diffraction (XRD), maintaining hexagonal wurtzite structure with an additional zinc gallium...

Methane, which has a high energy storage density and is safely stored transported in our existing infrastructure, can be produced through conversion of the undesired carrier H2 with CO2. Methane production standard transition-metal catalysts requires high-temperature activation (300-500 °C). Alternatively, semiconductor metal oxide photocatalysts used, but they require high-intensity UV light. Here, we report Ru catalyst that facilitates methanation below 250 °C using sunlight as an source....

Abstract Plasmon catalysis is an interesting technology concept for powering chemical processes with light. Here, we report the use of various Al 2 O 3 ‐supported Ru spheroidal nanoparticles as catalyst low‐temperature conversion CO and H to CH 4 (Sabatier reaction), using sunlight energy source. At high loadings (5.9 % w/w), observe a sharp increase in rate powered reaction when compared dark at same bed temperature. Based on our results exclude plasmon coupling cause, attribute enhancement...

In this paper a 28−4 fractional factorial design of experiments is applied to identify the important parameters that affect average diameter ZnO rods, synthesized by means hydrothermal procedure. A water-based Zn2+ precursor used for formation one-dimensional particles, without presence an organic additive. Results indicate that, at investigated levels, four have significant effect on mean diameter. These are temperature, heating rate, stirring and ultrasonic pre-treatment solution....

The ability to achieve an understanding of the correlations between chemical synthesis, doping mechanism and properties aluminium-doped zinc oxide (ZnO:Al) nanocrystals is great importance evaluate potential ZnO:Al as optimal building blocks for solution deposited transparent conductive layers. Two series Al-doped ZnO nanoparticles were synthesized by solution-based methods under different conditions yielding phase-pure wurtzite with morphologies (quasispheres rods). In both 80% input Al...

The experiment described in this article is designed for undergraduates as well high school students to help them understand nanoscience a basic way. attractive subject of sunscreen used illustrate the properties nanoparticles. prepare particles Zn(OH)2 by same reaction either microemulsion, microemulsion contaminated with acetone, or an aqueous solution. Hereby it shown that has different depending on its particle size. Furthermore, discover that, due their higher surface-to-volume ratio,...

Solution processing of Al-doped ZnO (AZO) is interesting from an economical point view for reducing synthesis and deposition costs in comparison to that vacuum methods. Several (aqueous) chemical solution routes have been explored AZO, but the question has never answered how state-of-the-art conductivity achieved. Here, we fine tune aqueous precursor resulting resistivities within 10–3 Ohm cm range after a reductive treatment. Profound insights are gained through study density film, crystal...

The properties of nanocomposites biodegradable polycaprolactone containing zinc oxide (ZnO) nanoparticles with diverse morphologies, that is, ZnO nanospheres, nanorods, and nanodisks are investigated. It is demonstrated for the first time dual action reduces gas permeability via two mechanisms: by creation a tortuous path second adsorption. Depending on morphology particles, oxygen can be reduced more than 60%. Tensile tests show remain very ductile. nominal strain all higher 500% before...

Due to a dominant one-dimensional growth rate, nanoparticles of zinc oxide often show rodlike morphology. As result, the synthesis small spherical undoped ZnO remains challenging. This paper presents two procedures that successfully produce powder consisting equiaxed nanoparticles: one using polyethylene glycol- (PEG-) assisted solvothermal method and other by calcination oxalate obtained from microemulsion-mediated method. In latter, zinc-substituted aerosol OT (AOT) is used as surfactant....

Fast and scalable low-temperature deposition of microscale metallic features is utmost importance for the development future flexible smart applications including sensors, wireless communication, wearables. Recently, a new class metal–organic decomposition (MOD) copper inks was developed, consisting self-reducing formate containing amine complexes. From these novel inks, metal with outstanding electrical conductivity (±105 S cm–1) are deposited at temperature 150 °C or less, which well below...

This study reports the low temperature and pressure conversion (up to 160 °C, p = 3.5 bar) of CO2 H2 CO using plasmonic Au/TiO2 nanocatalysts mildly concentrated artificial sunlight as sole energy source 13.9 kW·m−2 suns). To distinguish between photothermal non-thermal contributors, we investigated impact Au nanoparticle size light intensity on activity selectivity catalyst. A comparative P25 TiO2-supported a 6 nm 16 displayed 15 times higher for smaller particles, which can only partially...

Silver nanowire networks have demonstrated significant potential as semi-transparent electrodes for various applications. However, their widespread utilisation in devices, upscaled coating technologies such screen-printing need to be explored and related this, the formulation of suitable inks is indispensable. This work contributes this effort by synthesis Ag-NW based formulations. The rheological characteristics that are essential obtained addition hydrophobically modified cellulose....

Al-doped ZnO nanoparticles are synthesized by means of a heating up solution based thermal decomposition method. The synthesis involves reaction zinc acetylacetonate hydrate, aluminium and 1,2-hexadecanediol in the presence oleic acid oleyl amine. A proposed mechanism from reagents to monomers is corroborated analysis evolving gases using headspace GC-MS analysis. dynamically stabilized adsorbed oleate ions, after deprotonation amine, as was found NOESY proton NMR complementary FTIR...

Integration of electronic circuit components onto flexible materials such as plastic foils, paper and textiles is a key challenge for the development future smart applications. Therefore, conductive metal features need to be deposited on temperature sensitive substrates in fast straightforward way. The feasibility these emerging (nano-) technologies depends availability well-designed deposition techniques novel functional inks. As ultrasonic spray coating (USSC) one most promising meet above...

This work introduces a polymeric backbone eutectogel (P-ETG) hybrid solid-state electrolyte with an N-isopropylacrylamide (NIPAM) for high-energy lithium-ion batteries (LIBs). The NIPAM-based P-ETG is (electro)chemically compatible commercially relevant positive electrode materials such as the nickel-rich layered oxide LiNi0.6Mn0.2Co0.2O2 (NMC622). chemical compatibility was demonstrated through (physico)chemical characterization methods. nonexistence (within detection limits) of interfacial...

The recent cost-driven transition from silver- to copper-based inks for printing on flexible substrates is connected with new key challenges. Given the high oxidation sensitivity of copper before, during, and after curing process, conductivity thereby device performance can be affected. Strategies limit or even avoid this drawback include development metal organic decomposition (MOD) selected "protective" ligands. In study, influence ligand oxide formation during ink process described using...

The expanding field of flexible organic electronics has led to a high demand for flexible, stable, and transparent electrodes that retain their conductivity at high‐strain deformation. Among many conductive (TCEs) which indium tin oxide (ITO) is the most renowned, silver nanowires (AgNWs) prove be an excellent highly alternative. These 1D nanostructures form mesh nanometer‐thin wires can applied using solution‐processing printing techniques. Ultrasonic spray coating high‐end low‐cost,...

The preparation of Ru nanoparticles supported on γ-Al2O3 followed by chemical reduction using RuCl3 as a precursor is demonstrated, and their properties are compared to prepared impregnation with Ru3(CO)12 subsequent thermal decomposition. resulting from slightly larger (1.2 vs. 0.8 nm). In addition, were deposited Stöber SiO2 both deposition techniques. These particles than the ones (2.5 3.4 nm for decomposition, respectively). Taking into account size differences between nanoparticles, all...