Aluminum/water reaction system has gained considerable attention for potential hydrogen storage applications. In this paper, we report a new aluminum-based hydrogen generation system that is composed of aluminum/sodium hydroxide/sodium stannate solid mixture and water. This new system is charact...

In this study, we fabricated a stretchable strain sensor using a composite of three-dimensional zinc stannate (ZnSnO3) nanocubes (NCs) and one-dimensional silver nanowires (Ag-NWs) in a polydimethylsiloxane (PDMS) elastomer. The composite was spin-coated onto a polyethylene terephthalate (PET) s...

Sodium stannate is widely used in the electroplating and tin alloy industries. The traditional sodium stannate production processes suffer a variety of disadvantages including long flowsheet, high production cost and strict requirements for the equipment. In this study, a novel process for prepa...

Carbon nanotubes and amorphous carbon have been introduced into a bismuth telluride matrix (0.15 and 0.30 wt.% ratio) to investigate the influence of the carbon on the composite’s thermoelectric properties. Composites with well-dispersed additives have been obtained by sonication and ball-milli...

Development of high proton conducting, chemically stable electrolyte for solid oxide fuel cell application still remains as a major challenge. In this work, yttrium (0, 5, 10, 15 and 20 mol%) doped barium zirconate synthesised by hydrothermal assisted coprecipitation exhibited highly crystalline...

Piezoelectric ceramic – Portland cement composites have been developed for sensor application in concrete structures to overcome the acoustic matching problem that may occur for piezoelectric ceramic or polymers with concrete. Pozzolanic materials such as fly ash are commonly used in concrete t...

In this work, a novel method is proposed to integrate ferroelectric lead zirconate titanate (PZT) films on Si with highly tunable functionalities, through bi-layering with a barium titanate (BTO) film. First of all, the BTO film acts as a growth-promotion template layer which has successfully lo...

A new route for preparing barium zirconate titanate nanoparticles (BaZr0.3Ti0.7O3 (BZT)) has been developed by ultrasonication of BaCl2·2H2O, ZrOCl2·8H2O and TiCl4 precursors in a high concentration of NaOH aqueous solution. The as-prepared powders were identified by X-ray diffraction (XRD) as...

We report the barium zirconate supported NiOx catalysts (NiOx/BZO) for dry reforming of methane and feasibility test for their industrial application by using temperature-regulated chemical vapor deposition together with extrusion. Nickel oxide nanoparticles are well deposited and dispersed on B...

Trivalent rare-earth cation (R3+) and Y3+ co-doped BaCeO3 materials show an enhanced proton conductivity than single Y doped BaCeO3 material. For the same purpose, Sm3+ and Y3+ as paired ions are incorporated into BaZrO3 perovskite structure. The crystal structure, electrical conductivity and si...

Monolithic macroporous barium zirconate derived from ionic precursors has been successfully prepared via a phase separation route in the presence of poly(ethylene oxide) (PEO) and propyleneoxide (PO). Poly(ethylene oxide) (PEO) acts as a phase separation inducer, while propyleneoxide (PO) acts a...

The dissociation behavior of protons incorporated in yttrium-doped barium zirconate (BZY20) was investigated via combination of in-situ diffuse reflectance Fourier transform infrared spectroscopy (FT-IR) and evolved gas analysis. The vicinities of dopant or host ions were considered as sites of ...

Yttrium-doped Barium Zirconate is a protonic conductor that shows excellent chemical stability but low sinterability, demanding high sintering temperatures to achieve appropriate densification. However, even after sintering at high temperature, the grain size remains small, resulting in a low el...

Perovskite-structured oxides are promising materials for proton conduction. We use first-principles calculations to investigate the chemical stability and proton conductivity of doped barium hafnate (BaHfO3) and barium stannate (BaSnO3). Previously, we [RSC Adv. 3, 3333 (2013)] reported first-pr...

In the present work, we report the results of the influence of the Ni ions which partly substitute the Ba ions in the barium stannate (Ba1−xNixSnO3, where x = 0; 0.1; 0.2; 0.5), on the structural and electronic properties, as well as on the sensitivity to humidity. With the view to obtain a poro...

The processing route of barium stannate titanate ceramics were optimized to prepare full composition range solid solution sample. The phase structure, microscopic morphology and dielectric properties of barium stannate titanate ceramics were studied. X-ray diffraction patterns indicated that the...

In barium stannate titanate (BTS) ceramics, low frequency dielectric relaxation was observed at temperatures far below room temperature. Curve fitting of the temperature dependence of dielectric constant was done according to empirical equations. Several models were employed to study the thermal...

Density-functional theory calculations are performed to examine how two characteristics of a trivalent dopant (the one, physical – the ionic radius, the other, chemical – the electronegativity) impact the thermodynamics of doping, the defect association energy and the hydration energy in bariu...

Sm3+-doped barium stannate (BaSnO3:Sm3+) down-conversion particle was prepared via a sol-gel method with SnCl4·5H2O, BaCO3 and Sm(NO3)3 as raw materials followed by an annealing process. Differential thermal analysis (TG/DTA), X-ray diffraction analysis (XRD), scanning electronic microscope (SE...

In this study, electrically conductive perovskite lanthanum-doped barium stannate, LaxBa1-x SnO3-δ (x = 0, 0.05, 0.1 and 0.15) ceramics were synthesized through polymerized complex method. The evolution of BaSnO3 phase with temperature and effect of La doping was investigated. Doping of La incr...