Suppression of CO Adsorption on PtRu/C and Pt/C with RuO2 Nanosheets

RuO2 nanosheets were studied as a promotor for the hydrogen oxidation reaction in the presence of 300 ppm CO/H-2. The hydrogen oxidation current in 300 ppm CO/H-2 for RuO2 nanosheet modified PtRu/C catalyst (RuO2:Pt:Ru = 0.5:1:1 (molar ratio)) exhibited higher CO tolerance than Pt1Ru1/C and Pt2Ru3/C. Based on hydrodynamic voltammetry, chronoamperometry and CO stripping voltammetry, the addition of RuO2 nanosheets is suggested to suppress CO adsorption on the catalyst surface, resulting in an improvement in CO tolerance. (C) The Author(s) 2015. Published by ECS.ArticleECS ELECTROCHEMISTRY LETTERS. 4(5):F35-F37 (2015)journal articl

Effect of EDTA on Copper and Cadmium Absorption in Pharbitis nil and Triticum aestivum

Article信州大学環境科学論集6:94-98(1984)research repor

Inkjet printed intelligent reflecting surface (IRS) for indoor applications

A passive, low-cost, paper-based intelligent reflecting surface (IRS) is designed to reflect a signal in a desired direction to overcome non-line-of-sight scenarios in indoor environments. The IRS is fabricated using conductive silver ink printed on a paper with a specific nanoparticle arrangement, yielding a cost effective paper-based IRS that can easily be mass-produced. Full-wave numerical simulation results were consistent with measurements results, demonstrating the IRS's ability to reflect incident wave into a desired nonspecular direction based on the inkjet-printed design and materials

Improving oxygen reduction reaction activity and durability of 1.5nm Pt by addition of ruthenium oxide nanosheets

The durability of commercial carbon supported Pt nanoparticles with an average particle size of 1.5 nm (20 mass% Pt/C) has been improved by the addition of ruthenium oxide nanosheets (RuO2ns) without sacrificing the initial activity towards oxygen reduction reaction. The initial oxygen reduction reaction activity of the composite catalyst was slightly higher than as-received Pt/C. The electrocatalytic activity after consecutive potential cycling tests of the composite catalyst was c.a. 1.3 times higher than non-modified Pt/C. The increased durability of the composite catalyst is attributed to the improved preservation of the electrochemically active Pt surface area with the addition of ruthenium oxide. Keywords: Polymer electrolyte fuel cell, Oxygen reduction reaction, Durability, Ruthenium oxide, Nanosheet

Improving oxygen reduction reaction activity and durability of 1.5 nm Pt by addition of ruthenium oxide nanosheets

The durability of commercial carbon supported Pt nanoparticles with an average particle size of 1.5 nm (20 mass% Pt/C) has been improved by the addition of ruthenium oxide nanosheets (RuO2ns) without sacrificing the initial activity towards oxygen reduction reaction. The initial oxygen reduction reaction activity of the composite catalyst was slightly higher than as-received Pt/C. The electrocatalytic activity after consecutive potential cycling tests of the composite catalyst was c.a. 1.3 times higher than non-modified Pt/C. The increased durability of the composite catalyst is attributed to the improved preservation of the electrochemically active Pt surface area with the addition of ruthenium oxide. Keywords: Polymer electrolyte fuel cell, Oxygen reduction reaction, Durability, Ruthenium oxide, Nanosheet

Size Dependent Fast Li Ion Storage Based on Size Regulated TiO2(B) Nanosheet Electrodes with Vertical, Horizontal and Random Alignment

TiO2(B) has a high theoretical capacity of 335 mAh g−1 for Li+ intercalation and thus has been considered as a candidate for lithium-ion capacitor and Li-ion battery negative electrodes. For high rate lithium storage, i.e. high power density, it is important to shorten the Li+ diffusion path by using nanostructured TiO2(B). In this work, TiO2(B) nanosheet with different equivalent diameter of 300 nm and 30 nm were prepared. In addition, the orientation of the TiO2(B) nanosheets was manipulated by altering the deposition method and drying process. Smaller size TiO2(B) nanosheets had better Li+ intercalation ability compared to larger sized TiO2(B) nanosheets. The effect of alignment of the TiO2(B) nanosheets was evident for small-sized TiO2(B) nanosheets; vertical or random alignment of small-sized TiO2(B) afforded higher capacity compared to horizontally oriented nanosheets