Osmotic swelling and exfoliation behaviors in a lepidocrocite-type titanate H1.07Ti1.73O4·H2O were investigated upon reactions with tetramethylammonium (TMA+) tetrabutylammonium (TBA+) cations. The reaction products various physical states (suspension, wet aggregate, deposited nanosheets) characterized by several techniques, including X-ray diffraction under controlled humidity, small-angle scattering, particle size analysis, atomic force microscopy. As the ratio of tetraalkylammonium ion...

In order to commercialize the rapidly developing technology of energy harvesters, following devices need be developed further for enhancing output performance, flexibility, scalability, facile fabrication, and cheaper price. The composite-based triboelectric nanogenerator (CTENG), which contains above properties, is a promising that has attracted special interest decade. Focus been placed on hybrid concept between piezoelectric (CPENG) CTENG in enhance efficiency. This study presented...

Abstract There is a need to develop inexpensive, lightweight, and flexible high‐performance triboelectric nanogenerators (TENGs) from renewable resources. Here, multifunctional cellulose filter paper (CFP)‐based TENG consisting of dielectric Ti 0.8 O 2 nanosheets (Ti NSs) conducting Ag nanoparticles (Ag NPs) prepared by simple dip coating method. The incorporation NSs onto the CFP significantly improves charge generation, while inclusion NPs provides an electrically conductive path for...

Abstract The emergence of tribovoltaic nanogenerators (TVNGs) paves the way for developing a new kind semiconductor‐based energy harvester that overcomes restriction low output current in conventional approach. traditional TVNG generally depends on frictional pair between two rigid semiconductors (or metal‐semiconductor), limiting practicability flexible and portable electronics. Recent developments require fundamental understanding charge generation diverse operating modes structures. Here,...

Abstract Droplet‐based electricity generators (DEGs) harness liquid‐solid electrification to convert water droplets impacts into electrical energy. This study systematically examines how droplet height, volume, flow rate, and substrate tilt angle influence DEG performance using polytetrafluoroethylene (PTFE) as a triboelectric layer deionized water. Three electrode designs (double, top, bottom) are evaluated, revealing that the double‐electrode configuration delivers highest output. enhanced...

In this paper, titanium dioxide nanosheets (Ti0.91O2 NSs) were incorporated into bacterial cellulose (BC) film for dielectric property tuning while maintaining the flexibility of resulting composite paper. By taking advantage improved constant, nanosheets/BC composites employed as capacitive sensors. The fabricated devices showed highest sensing performance ∼2.44 × 10-3 kPa-1 from 0 to 30 N when incorporating little 3 vol% Ti0.91O2 NSs (or ∼2 wt% Ti). Stable operation and high robustness...

Two-dimensional (2D) pentagonal nanostructures have been caught research attention down to their electronic, optical, mechanical and thermal transport properties. Among them, the newly proposed ternary penta-BCN monolayer shows a great potential for piezoelectric materials according intrinsic piezoelectricity spontaneous polarization. Nevertheless, effect of strain toward these properties has not elucidated. In this study, using density-functional theory with Perdew–Burke–Ernzerhof (PBE)...

The pentagonal boron carbon nitride (penta-BCN) monolayer has been recently proposed as a new member of the pentagon-based two-dimensional nanosheets [Zhao et al., J. Phys. Chem. Lett. 11(9), 3501 (2020)]. By using density functional theory with generalized gradient approximation, we have carried out detailed investigations hydrogenated penta-BCN sheet, where pristine penta sheet is decorated H atoms to composition BCNH2. (H-BCN) structure mechanically, thermally, and dynamically stable. It...

New ternary graphite intercalation compounds (GICs) containing Na+ and linear alkylamines (Na-Cx-GIC) are reported. The following new GICs with indicated stages intercalate arrangements obtained: stage 1, monolayer (C3, C4); bilayer (C6, C8); 2 (C12, C14). Two features to donor-type found (i) an arrangement guest alkyl chains parallel encasing graphene layers, (ii) the transition from upon evacuation for C6. Although there many reports on of short, medium, long-chain in layered hosts, this...

Two-dimensional (2D) materials with a penta-atomic-configuration, such as penta-graphene and penta-B2C, have received great attention anodes in Li-ion batteries (LIBs). Recently, penta-BCN has been demonstrated to exhibit the highest theoretical capacity date of 2183 mA h g-1, corresponding composition Li3BCN. Herein, we study layer-by-layer Li adsorption on by explicitly comprehensively considering its structure. We discover new, more energetically favorable site that is distinct from...

The lepidocrocite-type layered alkali titanate AxMyTi2-yO4 has diverse chemical compositions with variation in charge per formula unit x, the interlayer cation A+, and intralayer metal M. Despite this multivariable nature, composition dependence of physical properties is not well explored. We report herein AC conductivity complementary dielectric Cs0.7M0.35Ti1.65O4, K0.8M0.4Ti1.6O4 (M = Zn, Ni), mixed-interlayer ion Cs0.6K0.1Zn0.35Ti1.65O4. For Cs0.7Zn0.35Ti1.65O4, total ∼7 × 10-8 to 2 10-6...

The structure of experimentally synthesized α-PdPSe (left) and the theoretically proposed β-PdPSe (right) which is thermodynamically, dynamically, mechanically, thermally stable.

The TiO 2 /CNNS composite shows enhanced sensitivity to atmospheric water ( i.e. , varied impedance with exposure air during the measurement) compared CNNS.

A series of ternary graphite intercalation compounds (GICs) alkali metal cations (M = Li, Na, K) and diamines [EN (ethylenediamine), 12DAP (1,2-diaminopropane), DMEDA (N,N-dimethylethylenediamine)] are reported. These include stage 1 2 M-EN-GIC d(i) 0.68-0.84 nm; M 0.68 nm), Li-12DAP-GIC (d(i) 0.83 Li-DMEDA-GIC 0.91 where is the gallery height. For a perpendicular-to-parallel transition EN observed upon evacuation, whereas for remains in parallel orientation. contain chelated Li(+) do not...

The ubiquitous (re)adsorption of atmospheric water by functional ceramics leads to some applications such as humidity sensing; at the same time, this phenomenon complicates understanding nature original conducting species. We presented herein effects adsorbed on electrical properties and charge transport K0.8Zn0.4Ti1.6O4, Cs0.7Zn0.35Ti1.65O4, Cs0.6K0.1Zn0.35Ti1.65O4 lepidocrocite-type alkali titanate ceramics. A small amount (0.02–0.33 mol/mol) is merely external surface but not intercalated...

The cold sintering process (CSP) has emerged as a revolutionary technique for low-temperature processing of ceramics and composites, enabling high-density fabrication at low temperatures. In this study, we demonstrated the implementation CSP in fabricating γ-glycine (γ-G)-bacterial cellulose (BC) composite evaluated effect temperature holding time on microstructure electrical properties. Our findings revealed that an increase leads to grain growth, transient solvent (water) facilitates...

Increased interlayer expansion and reduction of layered charge density in lepidocrocite-titanate.

Proton-free, alkali-containing layered metal oxides are thermally stable compared to their protonic counterparts, potentially allowing catalysis by Lewis acid sites at elevated temperatures. However, the acidic nature of these materials has not been well explored, as alkali ions generally considered promote basic but suppress character. Here, we report a rare example an unusually cesium-containing oxide CsxTi2–yMyO4 (x = 0.67 or 0.70; M Ti vacancy □ Zn). These lepidocrocite-type...

The action of a tetrapropylammonium hydroxide solution on lamellar zeolite precursor MCM-22P produced stable aqueous colloidal suspension which was shown by X-ray diffraction, small angle scattering and atomic force microscopy to contain ultrathin two-dimensional (2D) crystallites, including one-unit cell thick (i.e., 2.5 nm) monolayers.

Recent research into the cancer stem cell (CSC) concept has driven progress in understanding of biology and revealed promising CSC-specific targets for drug discovery efforts. As malignancies lung have been shown to be strongly associated with activities CSCs, we examined effects Ti_0.8O₂ nanosheets on these cells. Here show that target CSCs but not normal primary dermal papilla (DP) Whereas caused a dramatic apoptosis along decrease CSC phenotypes, human DP cells such...