This work describes a ternary nanocomposite system, composed of poly(vinylidene fluoride) (PVDF), NH2-treated graphene nanodots (GNDs), and reduced oxides (RGOs), for use in high energy density capacitor. When the RGO sheets were added to PVDF matrix, β-phase content became higher than that pristine PVDF. The surface-treatment GNDs with an ethylenediamine can promote hydrogen bonding interactions between PVDF, which formation finding could be extended combine advantages both GND developing...

In the present work, a series of zinc whitlockite (CaxZny(HPO4)2(PO4)12) powders was synthesized by low-temperature dissolution–precipitation process for first time. The phase conversion from calcium hydroxyapatite to occurred in an acidic medium presence Zn2+ ions. Variable chemical composition synthesis products achieved changing Ca-to-Zn molar ratio reaction mixture. Investigation evolution as function time demonstrated that phase-pure can be just 3 h. It is also single-phase obtained...

Thermally induced degradation and phase transformation of magnesium whitlockite (Ca 18 Mg 2 (HPO 4 ) (PO 12 powders were investigated in detail by combining XRD analysis, FTIR Raman spectroscopy as well 1 H 31 P NMR.

Abstract The Nb 2 CT x prepared by hydrothermal-assisted in-situ HF generation etching was investigated in terms of its gas sensor performance. obtained mixing AlC with pure water, hydrochloric acid, and fluoride (LiF or NH 4 F) then hydrothermally treated at 180 °C for 24 h. This hydrothermal treatment more efficient safer the synthesis than direct etching. etched LiF had relatively wide interlayer spacing because hydration radius Li + larger that . results also suggest O 5 is formed during...

Abstract Al 2 O 3 /Ti composites containing 0‐30 vol% dispersed fine Ti particles were fabricated using a hot‐press sintering method at 1500°C from mixtures of and TiH powders. During sintering, decomposed to form metallic Ti. The effects the content on mechanical electrical properties then investigated. No Ti‐Al intermetallic compounds detected by X‐ray diffraction, energy‐dispersive spectroscopy indicated presence Al‐Ti‐O solid solution Ti‐O phases. showed enhanced densification; measured...

Photo‐rechargeable batteries represent a synergistic concept that integrates both energy harvesting and storage modalities based on dual‐functional materials. Electrospun vanadium oxide nanofibers (VNFs) seamlessly coated with conductive carbon (VNF‐C‐120) as dual‐action cathode materials for photo‐rechargeable lithium‐ion (LIBs) are reported. The deliver high discharge capacity of 160 mAh g −1 , which could be increased up to 184 (C rate 0.75) under light illumination confirmed the...

Hydrogen, a clean-burning fuel, is of key importance to various industrial applications, including fuel cells and in the aerospace automotive industries. However, hydrogen gas odorless, colorless, highly flammable; thus appropriate safety protocol implementation monitoring are essential. Highly sensitive leak detection surveillance sensor systems needed; additionally, ability maintain uniformity through repetitive sensing becoming increasingly important. In this report, we detail fabrication...

SrTiO3 is an excellent photocatalyst due to its high photocorrosion resistance and thermal stability. In this study, we synthesized nanoparticles with specific surface areas by the hydrothermal method at reduced temperature. Titanium(IV) bis(ammonium lactato)dihydroxide (TALH) solution strontium hydroxide octahydrate [Sr(OH)2·8H2O] were used as starting materials. directly heating 150°C for 72–120 h. The had diameters of 20–40 nm, powder heated 72 h exhibited highest area 33.1 m2/g. This...

Visible light-activated yellow titanate nanotubes (TNTs) modified by peroxo groups were directly synthesized via a facile chemical reaction route using titanium complex ions as precursor. Obtained peroxo-modified TNTs (PTNTs) possessed cylindrical-shaped tubular morphology with an outer diameter of approximately 10 nm. The functional group (Ti-O-O) was formed between the interlayers lepidocrocite-type crystal that base structure TNTs, interlayer distance estimated at 10.02 Å. formation...

In this work, copper whitlockite (Cu-WH, Ca 18 Cu 2 (HPO 4 ) (PO 12 was successfully synthesized and comprehensively characterized. This material is a copper-containing analog of the well-known biomineral magnesium (Ca Mg ).

Using melt-derived LD glass powders and 5–20 M NaOH solutions, porous lithium disilicate (Li2Si2O5, LD) glass–ceramics were prepared by the cold sintering process (CSP) associated with post-annealing technique. In this novel technique, H2O vapor originating from condensation reactions between residual Si–OH groups in cold-sintered glasses played role of a foaming agent. With increasing concentration many more appeared, then rising trends number as well size found for spherical pores formed...

The effects of HCl additives (HCl/Si molar ratio = 0.1) on the crystallization behavior, chemical microstructure, and surface morphology gel-derived lithium disilicate (Li2Si2O5, LD) powders were investigated using sol–gel heat treatment processes. With additives, metasilicate (Li2SiO3, LM) phase preferentially crystallized even at 200 °C for post-heat treated LD powders. Moreover, several Li+ ions might not be attached to [SiO4] network but could located in residual pores surfaces form...

Lepidocrocite-type layered sodium titanate (NaxH2-xTi2O5) is widely used in environmental remediation because of its large specific surface area, formed by anisotropic crystal growth, and ability to store exchange cations between layers. Additionally, peroxo-titanate nanotubes (PTNTs), which are tubular titanates with peroxy groups, exhibit visible-light absorption capabilities, rendering them suitable for photocatalytic applications under visible light irradiation. However, cation...

We report a novel method for fabricating Pd-decorated nanoporous poly(aniline-co-aniline-2-sulfonic acid):poly(4-styrenesulfonic acid) (P(ANI-co-ASA):PSS) nanostructures and demonstrate their use as sensing elements hydrogen (H2) gas sensors. Both co-monomers PSS provide sufficient –SO3H groups to effectively anchor palladium nanoparticles lead enhanced interactions with H2 gas, while retaining the charge transport properties of P(ANI-co-ASA):PSS. The pores were 10–30 nm in diameter readily...

Titanate nanotubes (TNTs) have attracted significant attention as functional materials in various fields for their photocatalytic properties. However, synthesis method, which requires high alkali concentrations, limits preparation and application. Here, we applied a peroxo titanium complex precursor low of titanate to design appropriate inorganic nanostructures through controlled bottom-up route photocatalyst applications. The use complexes could minimize the number alkaline species used...