Optical Properties of the Carbon-Modified TiO2 Prepared by Microwave Carbonization Process
スポンサーリンク
概要
- 論文の詳細を見る
The carbon-modified TiO2 were synthesized through microwave carbonization of ethanol by using a domestic microwave oven. This process enabled to form the carbonaceous compounds on the surface of TiO2 and created several new mid-gap bands into the original bandgap within few minutes operation. The sample showed a remarkable visible-light absorption even at the wavelength of around 800 nm. The promotion of photocatalytic activity under visible and ultraviolet (UV) light irradiation were also confirmed by the I3- formation in KI aqueous solution. The I3- formation rate of carbon-modified TiO2 per unit mass under visible light is almost 25 times higher than that of pure TiO2. The mid-gap optical absorption mechanisms were investigated through analysis of absorption edges. It is revealed that surface state change against microwave-treatment time results in different mid-gap optical absorption processes.
- 2008-11-25
著者
-
Mitani Tomohiko
Research Institute For Sustainable Humanosphere (rish) Kyoto University
-
Yoshikawa Susumu
Institute Of Advanced Energy Kyoto University
-
Jitputti Jaturong
Institute Of Advanced Energy Kyoto University
-
Hachiya Kan
Graduate School of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
-
Shinohara Naoki
Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
-
Sonobe Taro
Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
-
Yoshikawa Susumu
Institute of Advanced Energy (IAE), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
-
Jitputti Jaturong
Institute of Advanced Energy (IAE), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
関連論文
- Effect of HCl Acid Treatment on the Microstructure of Titanate Nanotubes
- A high-resolution imaging algorithm based on scattered waveform estimation for UWB pulse radar systems(Remote sensing/Radar (2), Workshop for Space, Aeronautical and Navigational Electronics (WSANE 2005))
- Preparation and microstructure of titanate nanowire thin films by spray Layer-by-Layer assembly method(Aqueous Solution Science for Ceramic Processing II)
- Isosceles-Trapezoidal-Distribution Edge Tapered Array Antenna with Unequal Element Spacing for Solar Power Satellite
- New Stochastic Algorithm for Optimization of Both Side Lobes and Grating Lobes in Large Antenna Arrays for MPT
- Fundamental study on localized heating in hyperthermia using phase control of long-wavelength microwaves (特集 電気関係学会関西支部連合大会)
- Study of Isosceles Trapezoidal Edge Tapered Phased Array Antenna for Solar Power Station/Satellite(Antennas and Propagation)
- Effect of ZrO2-Addition on Structure of Sol-Gel Derived TiO2 Nanopowder (特集 ナノメータコンポジット材料)
- Hydrophilic Improvement of PET Fabrics Using Plasma-Induced Graft Polymerization
- Feasibility Study on New SPS Concept Utilizing Multiple Satellites in Formation Flight
- Nanowire/nanoparticle composite electrodes for dye-sensitized solar cells (特集 環境保護に必須のナノテク材料)
- A-11 Structural and Photovoltaic Properties of High Surface Area Nanosheet TiO_2(Session: Ceramics III)
- A-10 Structural, and Photovoltaic Properties of One-dimensional Nanostructured TiO_2(Session: Ceramics II)
- Charge Transporting Properties and Output Characteristics in Polythiophene:Fullerene Derivative Solar Cells
- Fabrication and Optical Properties of Electrospun Conductive Polymer Nanofibers from Blended Polymer Solution
- Zinc Plasma Emission from Zinc Oxide Ceramics under a Microwave Electric Field
- Electrochemiluminescence Devices Consisting of ZnO Nanorods Vertically Grown on Substrate
- Formation of Titania Nanotubes with High Photo-Catalytic Activity
- De Novo Design and Synthesis of Myoglobin-Peptide Conjugate
- GaN Schottky Diodes for Microwave Power Rectification
- Development of a Two-Dimensional Evaluation Method for Thin Layers Using Surface Plasmon Resonance
- Hydrothermal Production of SrTiO_3 Nanotube Arrays
- Improvement of Power Conversion Efficiency in Organic Photovoltaics by Slow Cooling in Annealing Treatment
- Optical Properties of the Carbon-Modified TiO2 Prepared by Microwave Carbonization Process
- Plasma Emission and Surface Reduction of Titanium Dioxides by Microwave Irradiation
- Synthesis of TiO2 Nanotubes and Its Photocatalytic Activity for H2 Evolution
- Retraction: Structural and Photovoltaic Properties of High Surface Area One-dimensional Nanostructured TiO2 [Journal of Solid Mechanics and Materials Engineering, 2007, 1(4), 459-468]
- Rectennas for microwave power transmission
- Structural and Photovoltaic Properties of High Surface Area One-dimensional Nanostructured TiO2
- Experimental Investigation of Co-channel and Adjacent Channel Operations of Microwave Power and IEEE 802.11g Data Transmissions
- Implementation and Feasibility Study of Co-channel Operation System of Microwave Power Transmissions to IEEE 802.11-Based Batteryless Sensor