SnO2-core/ZnO-shell nanowires were synthesized using a two-step process: the synthesis of SnO2 by thermal evaporation Sn powders followed atomic layer deposition ZnO. The room temperature NO2 gas sensing properties under ultraviolet (UV) illumination examined. cores and shells primitive tetragonal-structured single crystal wurtzite-structured ZnO, respectively. responses multiple networked nanowire sensors increased 2-3-fold at concentrations ranging from 1 to 5 ppm encapsulating with showed...

Bi2O3-decorated In2O3 nanorods were synthesized using a one-step process, and their structure, as well the effects of decoration with Bi2O3 on ethanol gas-sensing properties examined. The multiple networked nanorod sensor showed responses 171–1774% at concentrations 10–200 ppm 200 °C. stronger than those pristine-In2O3 sensors by 1.5–4.9 times corresponding concentrations. two exhibited short response long recovery times. optimal Bi concentration in operation temperature 20% °C,...

Submicron-sized monodispersed TiO2 spheres (SPs) with high porosity were synthesized by a controlled hydrolysis of titanium tetraisopropoxide (TTIP) and subsequent hydrothermal treatment at 230 °C. By adjusting the ratio TTIP to water (the r-factor) in reaction, diameters SPs selectively 260, 350, 450, 560, 800, 980 nm. The prepared pure anatase phase highly porous structures crystallite sizes ∼15 nm surface areas 101–121 m2g−1. nanoporous different then applied as light-scattering layer...

Polycrystalline ZnO nanowires with grain sizes ranging from 20 to 100 nm were synthesized using a newly designed two-step process: (first step) synthesis of ZnSe by vapor transportation mixture powders; and (second thermal oxidation the at 650 °C. Compared single-crystal nanowire gas sensors other nanomaterial reported previously, multiple networked fabricated nanograined showed substantially enhanced electrical responses NO2 300 The sensing properties increased dramatically increasing...

We fabricated TiO 2 –ZnO core‐shell nanofibers via a novel two‐step process. In the first step, core were synthesized by electrospinning. Subsequently, ZnO shell layers grown in controlled manner using atomic layer deposition. The methodology proposed this work is expected to be one of most suitable methods for preparing various kinds oxide or nanowires. investigated O sensing properties nanofibers. Good sensitivity and dynamic repeatability observed sensor, demonstrating that hold promise...

For the first time, a single crystalline FeTiO3 nanodisc in ilmenite phase has been synthesized by hydrothermal reaction at 220 °C. The prepared was hexagonal disk-like structure with an average diameter of ∼400 nm and thickness ∼70 nm, while its face oriented (001) plane grown to (110) direction. heterojunction formed between as-prepared Degussa P25 particle size ∼25 employing maleic acid as organic linker. FeTiO3/TiO2 coupled nanoscale demonstrated greatly enhanced photocatalytic activity...

This study examined the gas sensing mechanism of multiple networked core–shell nanowire sensors. The ethanol properties In2O3/ZnO nanowires synthesized by thermal evaporation indium powder in an oxidizing atmosphere followed atomic layer deposition ZnO were as example. pristine In2O3 and In2O3-core/ZnO-shell exhibited responses ∼30% ∼196%, respectively, to 1000 ppm at 300 °C. response nanostructures also showed a strong dependence on shell width. strongest was obtained with thickness ∼44 nm...

There have been very few studies on the effects of combining two or more techniques sensing performance nanostructured sensors. Cr2O3-functionalized ZnO nanorods were synthesized using carbothermal synthesis involving thermal evaporation a mixture and graphite powders followed by solvothermal process for Cr2O3-functionalization. The ethanol gas-sensing properties multinetworked pristine nanorod sensors under UV illumination examined to determine Cr2O3-ZnO heterostructure formation...

We have prepared Al2O3 films by the atomic layer deposition technique using trimethylaluminum as precursor for aluminum and O3, instead of commonly used H2O, an oxidant. show that even without any postdeposition annealing or preventive between film Si substrate to suppress formation metallic clusters, O3 significantly less amount defect states like Al–Al OH bonds compared with those H2O. The device quality leakage characteristics, showing a current density one two orders lower smaller...

In recent years, new thermotherapies based on nanoshells and more recently single-wall carbon nanotubes (SWCNTs) in combination with near-infrared (NIR) light irradiation have received significant attention as efficient techniques to destroy cancer cells selectively. Very we reported that porous silicon (PSi) can also be utilized a therapeutic agent generates heat sufficient kill without toxicity upon exposure NIR light. this paper, report the generation abilities of PSi suspension, PSi/NaCl...

PbS quantum dot-sensitized solar cells (QDSCs) with a photovoltaic conversion efficiency (η) of 5.73% have been fabricated by applying Au/CuS/FTO as counter electrode (CE), post-annealing the deposited QDs, and introducing bilayered TiO2 nanostructure photoanode.

Abstract The in vitro cell tests and vivo animal were performed to investigate the feasibility of photothermal therapy based on porous silicon (PSi) combination with near-infrared (NIR) laser. According Annexin V- fluorescein isothiocyanate Apoptosis assay test results, untreated cells exposed NIR laser without PSi treatment had a viability 95.6 91.3%, respectively. Likewise, treated but not irradiation also 74.4%. Combination these two techniques, however, showed 6.7%. Also, deaths mostly...