Inorganic semiconductor nanostructures are ideal systems for exploring a large number of novel phenomena at the nanoscale and investigating size dimensionality dependence their properties potential applications. The use such with tailored geometries as building blocks is also expected to play crucial roles in future nanodevices. Since discovery carbon nanotubes much attention has been paid usage inorganic field-emitters due low work functions, high aspect ratios mechanical stabilities,...

Single-crystalline ZnS nanobelts with sharp ultraviolet-light emission (∼337 nm) at room temperature have been assembled as UV Sensors. The high spectral selectivity, combined photosensitivity and fast response time, justifies the effective utilization of present "visible-light-blind" photodetectors in different areas.

Abstract ZnO and ZnS, well-known direct bandgap II–VI semiconductors, are promising materials for photonic, optical, electronic devices. Nanostructured have lent a leading edge to the next generation technology due their distinguished performance efficiency device fabrication. As two of most suitable with size- dimensionality-dependent functional properties, wide semiconducting ZnS nanostructures attracted particular attention in recent years. For example, both been assembled into...

We designed solar-blind deep-ultraviolet semiconductor photodetectors using individual Ga2O3 nanobelts. The photoconductive behavior was systematically studied. demonstrate high selectivity towards 250 nm light, fast response times of less than 0.3 s, and a large photocurrent to dark current ratio up 4 orders magnitude. photoresponse parameters such as photocurrent, time, quantum efficiency depend strongly on the intensity detector environment, nanobelt size. mechanism discussed, which...

Photocatalytic generation of hydrogen by using the hybrid nanostructures, ZnO/Pt/CdS, ZnO/Pt/Cd1−xZnxS and ZnO/Pt/CdS1−xSex, has been studied under UV-visible visible irradiation employing Na2S Na2SO3 as hole scavengers. Good H2 evolution rates up to 17.4 mmol h−1 g−1 an apparent quantum yield (AQY) 11.1% were obtained with ZnO/Pt/CdS irradiation. With alone, rate production was slower. 20% Zn substitution in place Cd CdS, 31.2 12.5 respectively irradiation, corresponding AQY values being...

The effects of in-situ generated interfacial oxygen vacancies on the catalytic efficiency copper-cobalt (CuCo) supported colored TiO 2 nanoparticles were studied. These catalysts synthesized via a solid-state approach...

Abstract Although there has been significant progress in the fabrication and performance optimization of one‐dimensional nanostructure‐based photodetectors, it is still a challenge to develop an effective low‐cost device with high characteristics, such as photocurrent/dark‐current ratio, photocurrent stability, fast time response. Herein efficient method achieve high‐performance ‘visible‐blind’ microscale ZnS nanobelt‐based ultraviolet (UV)‐light sensors without using lithography technique,...

Abstract Here, a facile and effective route toward full control of vertical ZnO nanorod (NR)/nanowire (NW) arrays in centimeter‐scale areas considerable improvement field‐emission (FE) performance is reported. Controlled deformation colloidal crystal monolayer templates introduced by heating near glass‐transition temperature. The NR/NW density, uniformity, tapering were all adjusted through selection template size deformation, electrolyte composition. In line with the adjustments,...

Single-crystalline zinc selenide (ZnSe) nanobelts were fabricated via the ethylenediamine (en)-assisted ternary solution technique and subsequent thermal treatment. Individual ZnSe assembled into nanoscale devices (see figure), showing a high spectral selectivity photocurrent/immediate-decay ratio fast time response, justifying effective utilization of as blue/UV-light-sensitive photodetectors. Detailed facts importance to specialist readers are published "Supporting Information". Such...

Single crystalline nanorods and nanowires of t-Te have been prepared by a simple solution route. The procedure involves the disproportionation NaHTe, reduction Te with NaBH4. By carefully controlling reaction conditions, diameter could be varied in 20–300 nm range. Nanowires 10 were obtained presence sodium dodecylbenzenesulfonate. nanobelts nano junctions employing hydrothermal solvothermal conditions. characterized variety microscopic spectroscopic techniques. UV-Visible spectra reveal two...

We report on a controlled synthesis of two novel semiconducting heterostructures: heterocrystalline-ZnS/single-crystalline-ZnO biaxial nanobelts and side-to-side single-crystalline ZnS/ZnO via simple one-step thermal evaporation method. In the first heterostructure, ZnS domain is composed heterocrystalline superlattice (3C-ZnS) N /(2H-ZnS) M [111]-[0001] with atomically smooth interface between wurtzite zinc blende fragments. High-spatial resolution cathodoluminescence studies individual...

We report on the synthesis of a novel core-shell metal-semiconductor heterostructure where In forms core nanowire and wurtzite ZnS shell nanotube. addition, controlled reaction conditions result in growth secondary quasi-aligned nanowires as numerous branches nanotubes. These hierarchical architectures are attractive for two reasons: (i) sharp tips nanostructures potential field-emitters (ii) since bulk form is superconducting should now pave way further investigations magnetic versus...

Recently, we have shown that the graphene–VO2(B) nanotube hybrid is a promising lithium ion battery cathode material (Nethravathi et al. Carbon, 2012, 50, 4839–4846). Though observed capacity of this was quite satisfactory, rate capability not. To improve wanted to prepare in which VO2(B) would be built on 2D nanosheets enable better electrode–electrolyte contact. Such material, N-doped nanosheet-built 3D flower hybrid, fabricated by single-step hydrothermal reaction within mixture ammonium...

Individual ZrS2-nanobelt field-effect transistors were fabricated using a photolithography process. Temperature-dependent electrical transport revealed different conductivity mechanism at working temperature regions. photodetectors demonstrated high-performance visible-light photoconductivity. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by the authors....

Abstract Homogenous crystallization in solution, the absence of external influences, is expected to lead growth that symmetric at least two opposite facets. Such was not case when we attempted synthesize ZnO nanostructures by employing a solvothermal technique. The reaction product, instead, consisted bullet‐shaped tiny single crystals with an abrupt hexagonal base and sharp tip. A careful analysis product intermediate states synthesis reveals one intermediates sheet‐like morphology acts as...

The reaction of β-Co(OH)2 hexagonal platelets with graphite oxide in an aqueous colloidal dispersion results the formation rings anchored to graphene layers. interaction between basic hydroxide layers and acidic groups on induces chemical etching platelets, forming rings. On heating air or N2, hybrid is morphotactically converted porous Co3O4/CoO ring–graphene hybrids. Porous NiCo2O4 also obtained through a similar process starting from β-Ni0.33Co0.67(OH)2 platelets. As electrode materials...

Insights into developing innovative routes for the stabilization of photogenerated charge-separated states by suppressing charge recombination in photocatalysts is a topic immense importance. Herein, we report synthesis metal-organic framework (MOF)-based composite where CdS nanoparticles (NPs) are confined inside nanosized pores Zr4+-based MOF-808, namely, CdS@MOF-808. Anchoring l-cysteine nanospace MOF-808 via postsynthetic ligand exchange allows capture Cd2+ ions from their aqueous...

Even though the anion exchange membrane fuel cells have many advantages, stability of their electrocatalysts for oxygen reduction reaction (ORR) has remained remarkably poor. We report here on ultrathin twisty PdNi-alloy nanowires (NWs) exhibiting a very low overpotential with an E1/2 ∼ 0.95 V versus RHE in alkaline media maintained over 200 K cycles, highest ever recorded electrocatalyst. The mass activity used NWs is >10 times higher than fresh commercial Pt/C. Therein, Ni improves Pd...

Piezocatalytic water splitting is an emerging approach to generate "green hydrogen" that can address several drawbacks of photocatalytic and electrocatalytic approaches. However, existing piezocatalysts are few with minimal structural flexibility for engineering properties. Moreover, the scope utilizing unprocessed yet unknown may widely differ from competing techniques due constantly varying nature surface potential. Herein, we present Bi4TaO8Cl as a representative class layered perovskite...

Carbon quantum dots (CQDs) represent a class of carbon materials exhibiting photoresponse and many potential applications. Here, we present unique property that dissolved CQDs capture large amounts molecular oxygen from the air, quantity which can be controlled by light irradiation. The O2 content varied between remarkable 1 wt % in dark to nearly half it under illumination, reversible manner. Moreover, depletion enhances away air–solution interface as nearby quickly regain them creating...