Kang H.Y. – TechConnect Briefs

Decomposition of Methanol Catalyzed by Cu-ZnO@C

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

Decomposition of methanol (DM) to CO and H2 can be catalyzed by Cu-ZnO@C core-shell nanoreactors. It is found that reactivity of DM catalyzed by the nanoreactors increase with an increase in the fractions of ZnO [...]

Decomposition of Methanol Catalyzed by Cu-ZnO@C

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

Decomposition of methanol (DM) to CO and H2 can be catalyzed by Cu-ZnO@C core-shell nanoreactors. It is found that reactivity of DM catalyzed by the nanoreactors increase with an increase in the fractions of ZnO [...]

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 [...]

California’s Approach for safe Nanotechnologies: Second Information Call-in from Manufacturers

Kang H.Y., Takatori S., Cal/EPA, US

The California Environmental Protection Agency’s Department of Toxic Substances Control (DTSC) initiated the second chemical information call-in on nanometal oxides (titanium dioxide, cerium oxide, and zinc oxide), nanometals (silver and zero valent iron), and quantum [...]

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 [...]

California’s Efforts to Safe and Responsible Nanotechnologies: Information Call-in from Manufacturers of Nanometals and Oxides

Kang H.Y., California Environmental Protection Agency, US

The nanotechnologies and their applications encompass many areas. However, because of their unique properties, nanomaterials might have the potential to adversely effects to human health and the environment. The potential risks of nanomaterials such as [...]

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 [...]