Photoluminescent zero-dimensional (0D) quantum dots (QDs) derived from transition metal dichalcogenides, particularly molybdenum disulfide, are presently in the spotlight for their advantageous characteristics optoelectronics, imaging, and sensors. Nevertheless, up to now, little work has been done synthesize explore photoluminescent 0D WS2 QDs, especially by a bottom-up strategy without using usual toxic organic solvents. In this work, we report facile high-quality water-soluble tungsten...

Two-dimensional niobium carbide (Nb2C), a member of the emerging MXene family, has recently garnered attention in various fields, including materials science, physics, chemistry, and nanotechnology. In this review, we highlight material properties, synthesis strategies, applications Nb2C energy storage devices, catalysis, photovoltaic devices. We first introduce methods, structural characteristics, notable chemical physical properties. Then, discuss influence morphology, functional groups,...

Nanoscale transition-metal dichalcogenide materials showed promising potential for visible-light responsive photocatalysis. Here, we report our investigations on the synthesis of heterodimensional nanostructures two-dimensional (2D) ultrathin MoS2 nanosheets interspersed with ZnO nanoparticles by using a facile two-step method consisting sonication-aided exfoliation technique followed wet chemical process. The photocatalytic activity nanocomposites was examined studying degradation different...

Vertically aligned ZnO nanorods (NRs) on aluminum-doped zinc oxide (AZO) substrates were fabricated by a single-step aqueous solution method at low temperature. In order to optimize optical quality, the effects of annealing and structural properties investigated scanning electron microscopy, X-ray diffraction, photoluminescence (PL), Raman spectroscopy. We found that temperature strongly affects both near-band-edge (NBE) visible (defect-related) emissions. The best characteristics have been...

We present studies of the compositional dependence optical properties AlxGa1−xN(0<x<0.22) alloys by modulation spectroscopy and photoluminescence. The yellow luminescence, which is well known in GaN generally assigned to shallow donor–deep acceptor pair recombination has also been observed AlxGa1−xN. As aluminum concentration increases, color band changes from (2.2 eV) blue (2.6 eV). shift was less than that gap. Together with previously published studies, it implies deep level...

The heterogeneous nature of trimetallic catalyst systems comes with beneficial synergy for catalytic applications. Nonetheless, the challenges associated to validate and control critical characteristics enhanced electrocatalytic efficiencies are yet be known. Herein, a genre catalysts were synthesized Ni, Co, Mo metals, whose morphological, structural, electronic, interface properties depend on Ni/Co Mo+4/Mo+5 ratios dominant element surface catalyst. results suggest that introduction third...

We report the facile and economic preparation of two-dimensional (2D) 0D MoSe2 nanostructures based on systematic non-toxic top-down strategies. demonstrate intrinsic peroxidase-like activity these nanostructures. The catalytic processes begin with facilitated decomposition H2O2 by using as peroxidase mimetics. In turn, a large amount generated radicals oxidizes 3,3,5,5-tetramethylbenzidine (TMB) to produce visible color reaction. enzymatic kinetics our complies typical Michaelis–Menten...

The fabrication and properties of n-ZnO nanowires/p-CuO coaxial heterojunction (CH) with a photoresist (PR) blocking layer are reported. In our study, c-plane wurtzite ZnO nanowires were grown by aqueous chemical method, monoclinic CuO (111) was then coated on the electrochemical deposition to form CH. To improve device performance, PR inserted between buffer film serve as block leakage current. Structural investigations CH indicate that sample has good crystalline quality. It found refined...

The synthesis of noble metal/semiconductor hybrid nanostructures for enhanced catalytic or superior optical properties has attracted a lot attention in recent years. In this study, facile and all-solution-processed synthetic route was employed to demonstrate an Au/ZnO platform with plasmonic-enhanced UV/Vis while retaining strengthened luminescent properties. visible-light response photocatalysis is supported by localized surface plasmon resonance (LSPR) excitations the performance under UV...

We exploit the utilization of two-dimensional (2D) molybdenum oxide nanoflakes as a co-catalyst for ZnO nanorods (NRs) to enhance their photocatalytic performance. The 2D orthorhombic α-MoO3 were synthesized through sonication-aided exfoliation technique. MoO3 can be further converted substoichiometric quasi-metallic MoO3-x by using UV irradiation. Subsequently, 1D-2D /ZnO NR and composite photocatalysts have been successfully synthesized. performances novel nanosystems in decomposition...

A Sb-doped ZnO microrod array was fabricated on an Al-doped thin film by electrodeposition. Strong violet luminescence, originated from free electron-to-acceptor level transitions, identified temperature-dependent photoluminescence measurements. This acceptor-related transition attributed to substitution of Sb dopants for Zn sites, instead O form a complex with two vacancies (VZn), the SbZn-2VZn complex. has lower formation energy and acts as shallow acceptor which can induce observed strong...

The present study deals with photothermal therapy of solid tumors using different forms oxygen-deficient sub-stoichiometric two-dimensional (2D) molybdenum oxide nanoflakes (α-MoO3-x ). Upon exfoliation power fine gridding followed by ultrasonication, bluish green (BG α-MoO3 ) was obtained. Oxygen vacancies in BG were generated upon irradiation an intense xenon lamp. Irradiating the for 3 and 5 h, deep blue (B) olive (G) obtained respectively. All exhibited high NIR absorption, making these...

Electrochemical water splitting is a promising technology for clean energy generation, specifically hydrogen (H2) production. However, the anodic oxygen evolution reaction (OER) sluggish, motivating exploration of alternative reactions, such as methanol oxidation (MOR) to achieve efficient H2 fuel production and value-added formate simultaneously. Therefore, development high-performance cost-effective electrocatalysts crucial boosting methanol-assisted (HER). In this study, we present facile...

In this study, the growth and properties of LiAlO2 material a nonpolar GaN-based light-emitting-diode (LED) structure on have been investigated. The is grown by Czochralski pulling technique used as substrate for nitride growth. An improved surface roughness can be obtained four-step polishing process. With subsequent nitridation treatment, pure M-plane (101̱0) GaN obtained. electron microscope shows an abundance cracks that are oriented parallel to (001) (100) planes rear GaN. absence...

In this study, a nearly lattice-matched (100) γ-LiAlO2 single crystal was demonstrated as potential substrate for the epitaxial growth of nonpolar ZnO materials. The adopted approach is simple chemical vapor deposition (CVD) method. orientation identified [10−10] (m-plane) by X-ray diffraction pattern. Characterization further structures and defects films were performed field emission transmission electron microscopy (FETEM). Room-temperature photoluminescence spectra showed strong UV peak...