Using reduced graphene oxide (RGO) as a two-dimensional support, we have succeeded in selective anchoring of semiconductor and metal nanoparticles at separate sites. Photogenerated electrons from UV-irradiated TiO(2) are transported across RGO to reduce silver ions into location distinct the anchored site. The ability store shuttle electrons, visualized via stepwise electron transfer process, demonstrates its capability serve catalyst nanomat on demand adsorbed species. These findings pave...

Graphene−TiO2 nanocomposites synthesized via a solution-based method involving photocatalytic reduction of graphene oxide have been employed as photoanodes. Nearly 90% enhancement in the photocurrent is seen reduced serves electron collector and transporter. Additionally, graphene−TiO2 nanocomposite electrodes exhibit significant activity for complete decomposition 2,4-dichlorophenoxyacetic acid (2,4-D). Combined with safe, synthetic practices, promising degradation rates provide framework...

Graphene based 2-D carbon nanostructures provide new opportunities to fortify semiconductor light harvesting assemblies. Electron and energy transfer rates from photoexcited CdSe colloidal quantum dots (QDs) graphene oxide (GO) reduced (RGO) were isolated by analysis of excited state deactivation lifetimes as a function degree oxidation charging in (R)GO. Apparent rate constants for electron determined CdSe–GO composites 5.5 × 108 6.7 s–1, respectively. Additionally, incorporation GO QD...

Graphene not only possesses interesting electrochemical behavior but also has a remarkable surface area and mechanical strength is naturally abundant, all advantageous properties for the design of tailored composite materials. Graphene–semiconductor or −metal nanoparticle composites have potential to function as efficient, multifunctional materials energy conversion storage. These next-generation systems could possess capability integrate storage solar energy, detection, selective...

High-frequency ultrasound at 211 kHz is effective in developing graphene-based nanoarchitectures. Both simultaneous and sequential reduction steps have been employed to reduce the graphene oxide (GO) a gold precursor, HAuCl4. Characterization of composites by transmission electron microscopy following process revealed well-dispersed Au nanoparticles on reduced GO (RGO) sheets that are no more than few layers thick (1−4 layers). The Raman spectra RGO−Au showed distinct surface enhancement...

A bottom-up strategy has been developed to construct a multiple electron transfer system composed of organic/inorganic ternary composites (porphyrin, zinc oxide nanoparticles, reduced graphene oxide) on semiconducting electrode without impairing the respective donor–acceptor components. The hierarchical cascade exhibited remarkably high photocurrent generation with an incident-photon-to-current efficiency up ca. 70%.

We demonstrate, for the first time, monolithic 3D (M3D) integration of back-end-of-line (BEOL) compatible Hf <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.5</sub> Zr O xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> (HZO) ferroelectric FET (FeFET) with front-end-of-line (FEOL) high-k/metal gate (HKMG) Si-NMOS. use low thermal budget (<; 400°C) processing to integrate HZO 1% Tungsten (W)-doped amorphous In...

Excited, or "hot" charge carrier generation and transfer driven by the decay of localized surface plasmon resonances (LSPRs) are key steps in plasmonic photocatalysis. Hybrid structures that contain both metal semiconductor building blocks facilitate extraction reactive carriers their utilization for photoelectrocatalysis. Additional functionality arises from hybrid combine noble nanostructures with components, such as chalcopyrite (CuFeS

A transformative approach is required to meet the demand of economically viable solar cell technology. By making use recent advances in semiconductor nanocrystal research, we have now developed a one-coat paint for designing quantum dot cells. binder-free paste consisting CdS, CdSe, and TiO(2) nanoparticles was prepared applied conducting glass surface annealed at 473 K. The photoconversion behavior these film electrodes evaluated photoelectrochemical graphene-Cu(2)S counter electrode...

We experimentally demonstrate back-end-of-the-line (BEOL) compatible (<;250 °C thermal budget)1% tungsten (W)-doped amorphous In <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (IWO) back-gate field-effect transistor (BGFET) and dual-gate (DGFET) with 7-nm channel thickness. The 100-nm length IWO DGFET exhibits excellent subthreshold slope of 73 mV/decade, record I...

We experimentally demonstrate BEOL compatible (<; 250C thermal budget) 1 % W-doped amorphous In <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (IWO) back-gate (BGFET) and dual-gate (DGFET) field-effect transistors with 7nm channel thickness. The 100nm length IWO DGFET exhibits excellent subthreshold slope (SS) of 73m V /dec, record ID,SAT 370μA/μm, on-off ratio > 4×10 <sup...

Single- to few-layer graphene oxide (GO) sheets have been successfully anchored onto TiO2 films using electrophoretic deposition. Upon UV illumination of TiO2-GO films, photogenerated electrons from are captured by GO. These initially used in GO's reduction, while additional electron transfer results storage across its sp(2) network. In the presence silver ions, deposition nanoparticles (NPs) is accomplished on GO surface opposite TiO2, thus confirming ability transport through plane....

Smart material nanoassemblies that can simultaneously sense and shoot low-level contaminants from air water are important for overcoming the threat of hazardous chemicals. Graphene oxide (GO) sheets deposited on mesoscopic TiO2 films underpin deposition Ag nanoparticles with UV irradiation provide foundation design a smart material. The particle size is readily controlled through precursor concentration time. These semiconductor–graphene oxide–metal (SGM) SERS-active hence capable sensing...

The widespread loss of stony reef-building coral populations has been compounded by the low settlement and survival juveniles. To rebuild communities, restoration practitioners have developed workflows to settle vulnerable larvae in laboratory outplant settled juveniles back natural artificial reefs. These often make use biochemical cues, which are presented swimming induce settlement. This paper establishes potential for inorganic cues complement these known effects. Settlement substrates...

Metal oxides have been considered as photo/electrocatalysts for water splitting because of their compositional and structural flexibility, consequently, tunable band gaps. These semiconductor nanomaterials could be used electrocatalysts artificial photosynthesis, which mainly includes the oxygen evolution reaction (OER) at anode hydrogen (HER) cathode. In this study, we synthesized nanostructured manganese tungstate (MnWO 4 ) using hydrothermal method a bifunctional electrocatalyst HER OER...

Nickel tungstate/graphene composite was synthesized in various compositions with application of a hydrothermal method. Chemical composition and morphology each sample studied via x-ray diffraction transmission electron microscopy techniques. In the continuous, photosystem obtained by deposition on fluorine-doped tin oxide electrode electrophoretic Electrode employment atomic force SEM Eventually, light conversion properties involved mechanism fabricated Mott–Schottky Our results confirmed...

Electroreduction of CO2 became an important topic recently because it can reduce the atmospheric levels and simultaneously synthesize chemical fuels. However, efficient conversion to produce fuels remains a challenge proper electrocatalyst is needed make this reduction process more selective efficient. In study, we prepared nanostructured tungstate-derived copper test its application in reduction. The tungstate (CuWO4) nanomaterials were first characterized by analytical techniques such as...

Titanium nitride (TiN) is a unique refractory plasmonic material, the nanocomposites and alloys of which provide further opportunities to tailor its optical photonic properties. We prepare TiAlN films continuously variable compositions through systematic variation TiN versus AlN cycle ratio in plasma-enhanced atomic layer deposition (PEALD) investigate resulting thin-film composition, crystallinity, The properties are not simple linear combinations films, exhibit distinct metallic dielectric...

Békés 103, a primarily Middle Bronze Age (c. 1600–1280 calBC) cemetery and settlement on the Great Hungarian Plain, has been investigated by BAKOTA project since 2011. Ceramics from site are covered in dense white concretions, it noted during compositional analyses that these vessels exhibit elevated concentrations of several potentially mobile elements comparison to regional tell sites. Here, we use multimethod (optical mineralogy, FT-IR, XRD, XPS, PXRF, SEM-EDS, LA-ICP-MS) mineralogical...

An organometallic complex catalyzes H 2 O disproportionation with an overall performance 14 200-fold greater than the best-performing MnSOD mimic.