Insight into surface segregation and chromium deposition on La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ cathodes of solid oxide fuel cells
Selective and preferential deposition of Cr on segregated SrO on the surface of LSCF cathodes of solid oxide fuel cells.
Materials Literature
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Carbon Deposition in Solid Oxide Cells during Co-Electrolysis of H2O and CO2
Carbon formation during co-electrolysis of H 2 O and CO 2 in Ni-YSZ supported Solid Oxide Electrolysis Cells (SOECs) may occur, especially at high current density and high conversion.In order to evaluate the carbon formation limits, five galvanostatic tests were performed in this work at electrolysis current densities…
Cobalt-based catalysts for the hydrolysis of NaBH4 and NH3BH3
Cobalt has been widely used as the main component of catalysts for the hydrolysis of sodium borohydride NaBH4 and, to a lesser extent, for the hydrolysis of ammonia borane NH3BH3. Though active in these reactions, the cobalt-based catalyst generally suffers from rapid deactivation. As emphasized in a perspective paper…
Temperature-dependent upconversion luminescence and dynamics of NaYF 4 :Yb 3+ /Er 3+ nanocrystals: influence of particle size and crystalline phase
Oleic acid-capped NaYF4:Yb(3+)/Er(3+) upconversion nanocrystals (UCNCs) with different sizes and crystalline phases were prepared, and their temperature-dependent upconversion luminescence (UCL) and dynamics were studied. It is interesting to observe that the temperature-dependent behavior of UCL for the β-phase (25 n…
Carbon Nanotubes and Their Growth Methods
Carbon Nanotubes (CNTs) are the allotropes of carbon which belong to the fullerene structural family. These are cylindrical structures with at least one end closed with a buckyball structure hemisphere. They are few nano meter in diameter and have tensile strength of ∼63 GPa and young's modulus of ∼1TPa. On the basis…
Quinoline derivative-functionalized carbon dots as a fluorescent nanosensor for sensing and intracellular imaging of Zn 2+
Functionalization of carbon nanodots (C-dots) with quinoline derivatives enables a highly sensitive and specific nanosensor for Zn 2+ sensing in aqueous solution and Zn 2+ imaging in vivo .
Recent progress in low-voltage cathodoluminescent materials: synthesis, improvement and emission properties
Nowadays there are several technologies used for flat panel displays (FPDs) and the development of FPDs with enhanced energy efficiency and improved display quality is strongly required. Field emission displays (FEDs) have been considered as one of the most promising next generation flat panel display technologies due…
Enhancement of seawater corrosion resistance in copper using acetone-derived graphene coating
We show that acetone-derived graphene coating can effectively enhance the corrosion efficiency of copper (Cu) in a seawater environment (0.5-0.6 M (∼3.0-3.5%) sodium chloride). By applying a drop of acetone (∼20 μl cm(-2)) on Cu surfaces, rapid thermal annealing allows the facile and rapid synthesis of graphene films…
Tracking dissolution of silver nanoparticles at environmentally relevant concentrations in laboratory, natural, and processed waters using single particle ICP-MS (spICP-MS)
Calculating nanosilver dissolution rates by measuring reduction in nanoparticle mass is more direct than measuring release of ionic silver alone.
Biobased building blocks for the rational design of renewable block polymers
Block polymers (BPs) derived from biomass (biobased) are necessary components of a sustainable future that relies minimally on petroleum-based plastics for applications ranging from thermoplastic elastomers and pressure-sensitive adhesives to blend compatibilizers. To facilitate their adoption, renewable BPs must be a…
Fluorescent carbon nanomaterials: “quantum dots” or nanoclusters?
Despite many efforts, the mechanisms of light absorption and emission of small fluorescent carbon nanoparticles (C-dots) are still unresolved and are a subject of active discussion. In this work we address the question as to whether the fluorescence is a collective property of these nanoparticles or they are composed…
A green one-arrow-two-hawks strategy for nitrogen-doped carbon dots as fluorescent ink and oxygen reduction electrocatalysts
A green strategy has been developed for synthesizing nitrogen-doped carbon dots (N-CDs) via hydrothermal treatment of willow leaves. The supernatant exhibits strong blue fluorescence under UV radiation and can be directly used as a fluorescent ink, while the solid product with pyrolysis possesses excellent electrocata…
Blend of Polypropylene/Poly(lactic acid) for Medical Packaging Application: Physicochemical, Thermal, Mechanical, and Barrier Properties
The effect of polypropylene/poly(lactic acid) weight ratios on the properties of blend films compatilized with polypropylene-grafted-maleic anhydride were investigated with 100:0, 60:40, 50:50, 40:60, and 0:100 of weight ratio. The blend films were prepared by melt mixing technique and cast film extrusion. The results…
Fe 2 MnSi x Ge 1−x : influence thermoelectric properties of varying the germanium content
The semi-classical Boltzmann theory, as implemented in the BoltzTraP code, was used to study the influence of varying the germanium content on the thermoelectric properties of the Heusler compounds, Fe 2 MnSi x Ge 1−x ( x = 0.0, 0.25, 0.5, 0.75 and 1.0).
Preparation and adsorption performance of cross-linked porous polycarbazoles
Hypercrosslinked carbazole-based porous organic polymers were prepared via FeCl 3 -promoted one-step oxidative coupling reaction and Friedel–Crafts alkylation in one pot.
Gas uptake, molecular sensing and organocatalytic performances of a multifunctional carbazole-based conjugated microporous polymer
A multifunctional conjugated microporous polymer exhibits a combination of functionalities such as selective CO 2 uptake, sensing hazardous and explosive molecules and highly efficient heterogeneous catalysis.
Morphology-tunable synthesis of ZnO nanoforest and its photoelectrochemical performance
Understanding and manipulating synthesis reactions and crystal growth mechanisms are keys to designing and constructing the morphology and functional properties of advanced materials. Herein, the morphology-controlled synthesis of three-dimensional (3D) ZnO nanoforests is reported via a facile hydrothermal route. Spec…
Single-source-precursor synthesis of dense SiC/HfC x N 1−x -based ultrahigh-temperature ceramic nanocomposites
A novel single-source precursor was synthesized by the reaction of an allyl hydrido polycarbosilane (SMP10) and tetrakis(dimethylamido)hafnium(iv) (TDMAH) for the purpose of preparing dense monolithic SiC/HfC(x)N(1-x)-based ultrahigh temperature ceramic nanocomposites. The materials obtained at different stages of the…
Multifunctional structural energy storage composite supercapacitors
This paper addresses the challenge of producing multifunctional composites that can simultaneously carry mechanical loads whilst storing (and delivering) electrical energy. The embodiment is a structural supercapacitor built around laminated structural carbon fibre (CF) fabrics. Each cell consists of two modified stru…
Facile synthesis of titanium nitride nanowires on carbon fabric for flexible and high-rate lithium ion batteries
We demonstrate the good performance of TiN nanowires as anodes for lithium-ion batteries.