Three types of Co3O4 nanoparticles are synthesized and characterized as a catalyst for the air electrode of a Li/air battery. The shape and size of the nanoparticles are observed using scanning electron microscopy and transmission electron microscopy analyses. The formation of the Co3O4 phase is confirmed by X-ray diffraction. The electrochemical property of the air electrodes containing Co3O4 ...

Modification of conventional Pt/C electrocatalyst with silicomolybdic acid (SiMoA) was performed using electrochemical cyclic voltammetry method. The modified and unmodified catalysts were tested under identical conditions for electrooxidation of CO, methanol, and ethanol. In the CO-stripping experiments, the modified catalyst was characterized by significant shifts (80 and 60 mV) to lower onse...

N-methyl imidazolium phosphotungstic salt has been synthesized and used as a special catalyst for photopolymerization of vinyl monomers. This is a fast and smooth reaction, and high molecular weight polymers with narrow polydispersity are obtained within 60 min. The compound was structurally characterized by elemental analysis, IR spectroscopy, and 1H NMR spectroscopy. The electrochemical prope...

Conjugated porphyrin arrays that possess delocalised electronic networks have, for the most part, been assembled by using alkene or alkyne type bridging units or by directly connecting individual porphyrin chromophores with multiple bonds to form fused porphyrin arrays. Throughout the last two decades, such conjugated porphyrin arrays have been actively explored due to their attractive electron...

The incorporation of a redox-active tris(4-(pyridine-4-yl)phenyl)amine (NPy3) ligand into the Cu(I) coordination frameworks [CuNPy3NO3·solvent]n and [CuNPy3Cl·solvent]n has been shown to facilitate redox state switching in the materials. In both cases, the initial Cu(II) metal centre was reduced in situ during the solvothermal synthesis under relatively mild conditions where the use of chloride...

The electrochemical oxidation of the benzothiazole dye Thioflavin T (ThT) was found to be modulated by its interaction with electric eel acetylcholinesterase (AChE). Modifications of AChE by trace amounts of small molecule inhibitors such as carbachol and paraoxon were detectable electrochemically using minimal reagents and with greater sensitivity than attainable through conventional fluoresce...

This work reports the coating of porous silicon (PS) with LaF3 and its influence on the photoluminescence (PL) property of PS. PS samples, prepared by electrochemical etching in a solution of HF and ethanol, were coated with e-beam evaporated-LaF3 of different thicknesses. It was observed that the thin LaF3 layer on PS led to a good enhancement of PL yield of PS. But with the increasing thickne...

Ti and Ti alloys have been widely applied to biomedical and dental fields and the demands for their applications have increased gradually in these fields. Ti and its alloys have been used as biomaterial because of their high corrosion resistance, low toxicity, low elastic modulus and low density. Their defects are low shear strength, low wear resistance, low weldability, low formability and low...

A series of chiral aromatic imides and diimides were synthesized and their electrochemical, absorption, fluorescent, and chiroptical properties were examined for their potential application as molecular chiroptical switches. These compounds exhibit strong UV–vis absorptions, and can be electrochemically reduced to radical anions that absorb in the near infrared (NIR) region. Further reduction t...

Polyaniline (PANI) and MnO2/PANI composites are simply fabricated by one-step interfacial polymerization. The morphologies and components of MnO2/PANI composites are modulated by changing the pH of the solution. Formation procedure and capacitive property of the products are investigated by XRD, FTIR, TEM, and electrochemical techniques. We demonstrate that MnO2 as an intermedia material plays ...