National Cheng Kung University – Page 4

High-temperature Desulfurization with Nanosize ZnO

Wang H.P., Wang T.C., Kang H.Y., Wang H.P., Wang T.C., Jou J.G., Wei J.L., National Cheng Kung University, TW

Thermal efficiencies of an integrated gasification combined cycle (IGCC) process can be enhanced with high-temperature desulfurization. Nanosize, sub-nano (clusters) and atomic-dispersed ZnO has been prepared for the high-temperature desulfurization. An enhanced absorbance of the nanosize [...]

Development of Device-Level Chemical-Mechanical Polishing Simulation Module Using Cellular Automata Method

Yeh H.-M., Chen K.-S., National Cheng Kung University, TW

This work briefly presents the basic theory, the development, and a primary demonstration of a device-level chemical-Mechanical Polishing (CMP) CAD module. By integrating the phenomenological material removing relation such as Preston’s equation, contact mechanics, finite [...]

Chemical structure of ZnO nanorod array on a DSSC photoanode

Chang Y-H, Liao C-Y, Wang H.P., Wei Y-L, Fukushima Y., Guo T-F, Chiang Y-F, National Cheng Kung University, TW

The main objective of the present work was to study speciation of ZnO nanorods and the photoexcited electron transfer between photosensitive dyes and the ZnO nanorod arrays (Fig. 1) on the photoanode of a dye-sensitized [...]

Mesoporous TiO2 hollow spheres on a DSSC photoanode

Liao C-Y, Wang H.P., Lin H-P, National Cheng Kung University, TW

To enhance solar energy efficiency of a dye-sensitized solar cell (DSSC), high crystallinity mesoporous TiO2 hollow spheres (MHS-TiO2) have been coated on the photoanode. The MHS-TiO2 was prepared by calcination of the Ti(OBu)4 coated mesoporous [...]

Preparation of Nanosize Copper Recycled from an Electroplating Wastewater

Huang C.H., Wang H.P., National Cheng Kung University, TW

Chemical structure of copper recycled directly from an electroplating (EP) wastewater for preparing core-shell nanoparticles has been studied by X-ray based spectroscopy in the present work. Experimentally, about 40-50% of copper in the EP wastewater [...]

Preparation of nitrogen-doped mesoporous TiO2 with a room-temperature ionic liquid

Hsiung T-L, Wang H.P., Wei Y-L, National Cheng Kung University, TW

A nitrogen-doped mesoporous TiO2 (N-TiO2) was synthesized using a room-temperature ionic liquid (RTIL) (C4mimBF4) as the template. By 1H NMR (Figure 1), interactions between Ti and nitrogen of the RTIL are observed. The nanosize mesoporous [...]

Formation mechanism of copper-silver metal nanoparticle encapsulated in carbon shell

Kang H.Y., Wang H.P., Huang C.H., Tsai C.K., National Cheng Kung University, TW

The formation mechanism of nanosize copper-silver encapsulated in the inert carbon shell (CuAg@C) has been studied by in-situ small angle X-ray scattering (SAXS) spectroscopy. SAXS is a very useful method in studies of electron density [...]

Incorporation of plasma modified multi-walled carbon nanotubes into TiO2 photoanode for dye-sensitized solar cells (DSSC)

Chan Y.F., National Cheng Kung University, TW

Dye-sensitized solar cells (DSSC) are fabricated using photoanode comprises of nanocomposite material of TiO2 and multi-walled carbon nanotubes (MWNT) treated in situ by plasma and subsequent functionalization by grafting of maleic anhydride (MA). The carboxyl [...]

Fabrications of Bifunctional Janus and Triblock Saturn Colloids

Lin C.C., Ho C.-C., Chang C-C, Kuo C., National Cheng Kung University, TW

A synthetic approach for the fabrications of Janus and Saturn colloids was demonstrated by the sequential embedment and surface modification of silica colloids. Electrospinning of poly(methyl methacrylate) (PMMA) and poly(4-vinyl pyridine) (P4VP) blends produced polymer [...]

Dye-sensitized solar cell using a TiO2 nanocrystalline film electrode prepared by solution combustion synthesis

Wang C.M., Chungb S.L., National Cheng Kung University, TW

The nanocrystalline anatase TiO2 films were prepared and characterized in connection with their application to dye-sensitized solar cells. Solution combustion synthesis of TiO2 nanocrystalline film is based on hydrolysis, nitrated, and combustion reaction. The solution [...]