A5011491287- Diamond and Carbon-based Materials Research
- Electrochemical sensors and biosensors
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Fluoride Effects and Removal
- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- Lipid Membrane Structure and Behavior
- Molecular Junctions and Nanostructures
- TiO2 Photocatalysis and Solar Cells
- Porphyrin and Phthalocyanine Chemistry
- Electric Motor Design and Analysis
- Photodynamic Therapy Research Studies
- Metal and Thin Film Mechanics
- Multilevel Inverters and Converters
- Advanced battery technologies research
- Luminescence and Fluorescent Materials
- Advanced oxidation water treatment
- Advanced biosensing and bioanalysis techniques
- Gold and Silver Nanoparticles Synthesis and Applications
Tokyo University of Science
2016-2025
The University of Tokyo
1999-2025
Kindai University
2024
NOK Corporation (Japan)
2023
Japan Science and Technology Agency
2014-2018
Analysis Group (United States)
2018
Konica Minolta (Japan)
2018
Meidensha (Japan)
2014-2016
National Cancer Centre Japan
2013
Teikyo University of Science
2013
Photocatalytic decomposition of water into H2 and O2 on Cu2O under visible light irradiation is investigated; the photocatalytic splitting powder proceeds without any noticeable decrease in activity for more than 1900 h.
Photocatalytic TiO2/SiO2 coatings with excellent superhydrophilic wettability were prepared on light-weight polycarbonate substrates for self-cleaning applications. The effect of distinct SiO2 concentrations (0–40%) in TiO2 the morphology, wettability, UV–Vis transmittance, haze, and durability was studied detail. 20% silica showed wetting properties a smooth uniform morphology more than 85% transmittance. lower haze value confirms their clear optical appearance. A low-friction layer...
Boron doped diamond (BDD) electrodes have exemplary electrochemical properties; however, widespread use of high-quality BDD has previously been limited by material cost and availability. In the present article, we report a paste electrode (BDDPE) coupled with microfluidic paper-based analytical devices (μPADs) to create low-cost, high-performance sensor. The BDDPEs are easy prepare from mixture powder mineral oil can be easily stencil-printed into variety geometries. We demonstrate utility...
In this research work, we reported the synthesis of a spherical-shaped bismuth vanadate (BiVO4) photocatalyst using cost-effective, simple, chemical hydrothermal method and studied effect deposition temperatures on structural, morphological, optical properties, etc. The XRD result confirmed monoclinic scheelite phase BiVO4. An XPS study occurrence Bi, V, O elements also found that Bi V exist in +3 +5 oxidation states, respectively. SEM micrographs revealed morphology BiVO4 photocatalyst....
S. Ikeda, T. Takata, Kondo, G. Hitoki, M. Hara, J. N. K. Domen, H. Hosono, Kawazoe and A. Tanaka, Chem. Commun., 1998, 2185 DOI: 10.1039/A804549F
AimsAlthough dietary saturated fatty acids (SFA) are considered atherogenic, associations between SFAs intake and stroke coronary heart disease still debated. We sought to test the hypothesis that SFA is associated inversely with risk of its subtypes positively among Japanese, whose average lower than Westerners.
Semiconductor photocatalysis driven by electron/hole has begun a new era in the field of solar energy conversion and storage. Here we report fabrication optimization TiO2/BDD p-n heterojunction photoelectrode using p-type boron doped diamond (BDD) n-type TiO2 which shows enhanced photoelectrochemical activity. A BDD was first deposited on Si substrate microwave plasma chemical vapor deposition (MPCVD) method then sputter coated top grains for different durations. The microstructural studies...
The combustion of high fluoride-content coal as an energy resource for heating, cooking, and food drying is a major exhaust emission source suspended particulate matter fluoride. High concentrations these pollutants have been observed in indoor air coal-burning families some rural areas China. Because airborne fluoride has serious toxicological properties, pollution the prevalence fluorosis analyzed area healthy nonfluorosis China Japan. For human health, not only directly inhaled by...
Electrical properties of detonation diamond nanoparticles (NDs) with individual diameters ∼5 nm are important for many applications. Although is an insulator, it known that hydrogen-terminated bulk becomes conductive when exposed to water. We show heating ND in hydrogen gas at 600–900 °C resulted a remarkable decrease resistivity from 107 105 Ω cm, while the was essentially unchanged after treatment 400 and lower temperatures. Fourier Transform Infrared Spectroscopy X-ray photoelectron...
An efficient solar-driven biofuel hydrogen production from direct photoelectrocatalytic oxidation of glucose on a robust Cu<sub>2</sub>O–TiO<sub>2</sub> photoelectrode was demonstrated.
We report a simple room-temperature synthesis route for increasing the reactivity of TiO2 photocatalyst using solution plasma process (SPP). Hydrogen radicals generated from SPP chamber interact with feedstock, transforming its crystalline phase and introducing oxygen vacancy defects. In this work, we examined pure anatase as model feedstock because photocatalytic attributes well-characterized properties. After treatment, was transformed to an anatase/brookite heterocrystalline vacancies....
Abstract Competitive hydrogen evolution and multiple proton-coupled electron transfer reactions limit photoelectrochemical CO 2 reduction in aqueous electrolyte. Here, oxygen-terminated lightly boron-doped diamond (BDD L ) thin films were synthesized as a semiconductor source to accelerate reduction. However, BDD alone could not stabilize the intermediates of reduction, yielding negligible amount products. Silver nanoparticles then deposited on because their selective electrochemical...
Porphyrin derivatives accumulate selectively in cancer cells and are can be used as carriers of drugs. Until now, the substituents that bind to porphyrins (mainly at meso-position) have been actively investigated, but effect functional porphyrin positions (β-, on tumor accumulation has not investigated. Therefore, we investigated correlation between position using cells. We found meso-derivative showed higher than β-derivative, with less bulky substituent When evaluating intracellular...