The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concent...The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concentration: iron | iron oxide | ODA layer with iron oxide Higher ODA concentration: iron | iron oxide | ODA layer with iron oxide | pure ODA layer It is shown from infrared specular reflection that the surface layer of iron treated with higher ODA concentration reflects ν (CH) absorption peak corresponding to pure ODA layer. Every ν (CH) absorption peak shows opposite absorption phenomenon because of reflection from the iron oxide, which is under the pure ODA layer.Photoelectrochemical study exhibits that ODA treatment leads to the changes in physical structure of iron oxide layer. ODA treatment was successfully applied to lay- up protection in power plant.展开更多
Mesoporous titania with anatase crystal framework was generated directly by ho mogeneous precipitation method using titanium sulfate (Ti(SO4)2) mixed with urea as precursor and octadecylamine (C18H37NH2) as structure-...Mesoporous titania with anatase crystal framework was generated directly by ho mogeneous precipitation method using titanium sulfate (Ti(SO4)2) mixed with urea as precursor and octadecylamine (C18H37NH2) as structure-directing agent. The as-synthesized titania has been characterized by XRD, TEM, FT-IR and N2 adsorp tion-desorption isotherm. The results displayed a wormhole-like anatase mesost ructure lacking of long-range order with BET surface area of 35m2·g-1, pore v olume of 0.1cm3·g-1 and broader pore size distribution including microporous a nd mesoporous domain. C18H37NH2 incorporated into the as-synthesized oxide.展开更多
文摘The anti- corrosion performance of iron is greatly improved after octadecylamine (ODA) treatment. It is assumed from AES that the structure of surface layer of samples treated with ODA is as follows: Lower ODA concentration: iron | iron oxide | ODA layer with iron oxide Higher ODA concentration: iron | iron oxide | ODA layer with iron oxide | pure ODA layer It is shown from infrared specular reflection that the surface layer of iron treated with higher ODA concentration reflects ν (CH) absorption peak corresponding to pure ODA layer. Every ν (CH) absorption peak shows opposite absorption phenomenon because of reflection from the iron oxide, which is under the pure ODA layer.Photoelectrochemical study exhibits that ODA treatment leads to the changes in physical structure of iron oxide layer. ODA treatment was successfully applied to lay- up protection in power plant.
文摘Mesoporous titania with anatase crystal framework was generated directly by ho mogeneous precipitation method using titanium sulfate (Ti(SO4)2) mixed with urea as precursor and octadecylamine (C18H37NH2) as structure-directing agent. The as-synthesized titania has been characterized by XRD, TEM, FT-IR and N2 adsorp tion-desorption isotherm. The results displayed a wormhole-like anatase mesost ructure lacking of long-range order with BET surface area of 35m2·g-1, pore v olume of 0.1cm3·g-1 and broader pore size distribution including microporous a nd mesoporous domain. C18H37NH2 incorporated into the as-synthesized oxide.
