Materials Literature
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Polypyrrole (PPy) was successfully electropolymerized potentiodynamically on prepassivated Fe electrode in an aqueous solution containing monomer and oxalic acid. Electropolymerization of PPy was performed between 0.3 V and 0.8 V vs SCE with a scan rate of 20 mV/s. Electrochemical properties of PPy coated Fe electrode…
The pursuit of high-capacitance carbon materials is urgently needed for supercapacitors, which are among the most promising energy storage devices. Herein, we developed an effective KOH-activation method to improve the porous structures of electrospun carbon nanofibers for high-performance supercapacitors. In detail,…
Protein-based microporous carbon (PMC) with high nitrogen, sulfur content and the specific surface area was obtained from commercial protein powder (PP) by KOH activation. Many interconnected micropores and mesopores were formed in the carbonization process, the specific surface area of the PMC was up to 1117 m 1 g -1…
Abstract BACKGROUND Trace quantities of phenylacetylene can poison styrene polymerisation catalysts. The phenylacetylene content must be less than 10 ppm and selective hydrogenation (to styrene) is viewed as a viable process solution. High styrene selectivities have been achieved in batch liquid phase operations while…
Many nanoparticle-based chiral liquid crystals are composed of polydisperse rod-shaped particles with considerable spread in size or shape, affecting the mesoscale chiral properties in, as yet, unknown ways. Using an algebraic interpretation of Onsager-Straley theory for twisted nematics, we investigate the role of le…
Fe-doped CaTi2O4(OH)2 cathode materials for supercapacitors were synthesized by a facile hydrothermal method. The effects of Fe-doping ion content on the electrochemical performance of CaTi2O4(OH)2 were studied by galvanostatic charge/discharge and cyclic voltammetry measurements. The optimal Fe-doping ion content x w…
Abstract In this paper, how rare‐earth element dopants (samarium and erbium) affect the scale development of sintered ZrB 2 /SiC (ZBS) samples during ablation testing was investigated. ZBS billets with five different Sm to Er ratios, with a nominal total amount of 3 mol% dopant incorporated, were prepared by sintering…
Fe-Sn compound layer on interface was studied during the interaction between liquid Sn and 304 stainless steel (304 SS), and the effect of the intermetallics on the corrosion of 304 SS in 300 °C high temperature water was researched. The experimental results indicate that a (Fe, Cr)Sn2 compound layer forms at the Sn/3…
Corrosion is one of the major problems of mild steels in acidic medium. This can be minimized by the application of corrosion inhibitors, however; the most of inhibitors are toxic in nature. Therefore inhibitors from green sources are highly desirable to maintain the sustainability of the environmental system. Consequ…
In this work, we describe a robust composite film-modified indium tin oxide (ITO) electrode with improved detection capabilities for an example neurotransmitter, dopamine (DA). The composite film was developed by the combination of a Dawson-type vanadium tungstophosphate, α2- K7P2W17VO62·18H2O (P2W17V), and cationic c…
A new cogeneration system model consisting of a DCFC (direct carbon fuel cell), a TTEG (two-stage thermoelectric generator) and a regenerator is proposed, where the DCFC directly and efficiently converts the chemical energy of carbon into electricity and waste heat, and the TTEG harvests the waste heat for additional…
The impact of some Pyridopyrimidine derivatives on the corrosion of carbon steel (CS) in 0.5M HCl was examined utilizing mass loss (ML), potentiodynamic polarization (PP), AC impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibition efficiency (IE) increases with increasing…
In this work, the corrosion behavior of aluminum in carbon dioxide solutions with different concentrations at high temperature (50 o C) was studied. The corrosion of aluminum in the carbon dioxide solutions was inhibited to a certain extent compared to the corrosion in deionized water. It was found that an aluminum el…
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Glioma is a primary intracranial malignant tumor with poor prognosis. In this study, we aimed to develop transferrin (Tf)-modified poly(lactic-co-glycolic acid) (PLGA) nanoparticles to deliver temozolomide (TMZ) to glioma and evaluate their efficacy to kill glioma. TMZ-loaded nanoparticles were prepared by nanoprecipi…
Gallic acid-based epoxy resin monomer was synthesized by the natural extract of gallnut for the efficient dispersion of graphene in epoxy resin. The graphene zinc-rich anticorrosion coatings were further prepared on the basis of the graphene / gallic acid-based epoxy resin monomer dispersion system. Electrochemical ex…
We fabricated an indium tin oxide (ITO)/Ga2O3/Ag/Ga2O3 multilayer as a transparent conductive electrode for ultraviolet light-emitting diodes (UV LEDs). The electrical and optical properties of the multilayer were improved by optimizing the annealing temperature of the ITO contact layer and the whole ITO/Ga2O3/Ag/Ga2O…
ABSTRACT Scalable, bottom‐up chemical synthesis and electrospinning of novel Cl ‐ substituted poly( para ‐phenylene terephthalamide) (PPTA) nanofibers are herein reported. To achieve Cl‐PPTA nanofibers, the chemical reaction between the monomers was precisely controlled, and dissolution of the polymer into solvent was…
The time-dependence of electrochemical reduction current, which was observed during the one-dimensional (1-D) crystal growth of ferromagnetic cobalt nanowire arrays, was analyzed by Johnson–Mehl–Avrami–Kolmogorov (JMAK) theory. Textured hcp-Co nanowire arrays were synthesized by potentio-static electrochemical reducti…
This paper investigates the inhibition effects of Vitamin B1 without and with bromide ion on carbon steel corrosion in 1.0 mol/L phosphoric acid solution using potentiodynamic polarization and electrochemical impedance spectroscopy techniques. The results indicate that combination of Vitamin B1 and bromide ion perform…