Wang H.P. – TechConnect Briefs

Preparation of size-controllable (Cu-ZnO)@C core- and yolk-shell nanoparticles

Hong C.-I., Kang H.Y., Chang F-C, Wang H.P., National Cheng Kung University, TW

Size-controllable Cu-ZnO@C core-shell nanoparticles having diameters of 7-20 nm were prepared by carbonization of Cu2+- and Zn2+-CD (Cu-to-Zn ratio=0.1-1) at 343-573 K for 2 hrs. By XRD, the major compounds in the Cu-ZnO@C core-shell nanoparticles [...]

Simultaneous Desulfurization and Particulate Removal with ZnO Dispersed Ceramic Filters at High Temperatures

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

Flue gas cleaning at high temperatures can increase thermal efficiency with more importantly to simplify processes and lower cost. The main objective of this work was to investigate the feasibility of simultaneous desulfurization and particulate [...]

Simultaneous Desulfurization and Particulate Removal with ZnO Dispersed Ceramic Filters at High Temperatures

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

Flue gas cleaning at high temperatures can increase thermal efficiency with more importantly to simplify processes and lower cost. The main objective of this work was to investigate the feasibility of simultaneous desulfurization and particulate [...]

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 [...]

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 [...]

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 [...]

The Reaction of Nano-scale Iron Fluidized in Microwave Radiation Field to Treat Chlorobenzene

Lee C-L, Wang H.P., Wang Y-S, Wu C-R, Wang H.P., Wang Y-S, Jou C.-J.G., National Kaohsiung First University of Science and Technology, TW

Microwave (MW) energy is combined with nano-scale iron particles fluidized in aqueous chlorobenzene (CB) solution for reducing the activation energy of CB to enhance it decomposition. When the metal particles are fluidized in solution, the [...]

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 [...]