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Room temperature amphiphiles assisted synthesis of nanomaterials

Author: XiaoZuo
Tutor: ZuoYing
School: Northeast Normal University
Course: Physical and chemical
Keywords: Nanomaterials Amphiphiles Copper oxide Silver / silver halide
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 53
Quote: 0
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Abstract


Controlled synthesis of nanostructures nanotechnology development is an important part is to explore the properties and applications of nano-materials basis . In the preparation of nanomaterials chemistry methods, liquid phase method , especially in water as a solvent liquid phase due to low consumption, environmental protection and concern. In this paper, a supporting role amphiphiles , at room temperature , the liquid phase synthesis of a hydrophilic / super-hydrophilic properties of the substrate material of CuO , and Ag / AgX visible catalyst composite material . In recent years , with the wettability of functional materials are more and more attention. Wetting properties not only by the properties of the material itself , but also by the important influence of surface structure . In this paper , the use of amphiphilic molecules CTAB and PEG, in situ synthesis of a copper foil surface having a hydrophilic surface of CuO substrate material. Simple and mild experimental conditions . A series of studies show that , NaOH concentration of amphiphilic molecules and its concentration , have a direct impact on the surface of the substrate material of CuO morphology and wetting properties. A photosensitive silver halide material high . After absorbing a photoelectron , silver halide can produce an electron and a hole , so that the silver halide ions directly into silver atoms , and so forth continues, in a stable sunlight , become a kind of silver halide photocatalytic performance of chemical materials . In this paper, the regulation of amphiphilic molecules at room temperature , through visible light irradiation was successfully synthesized Ag / AgX composite nanomaterials. A series of studies showed that , Ag / AgBr visible light photocatalytic best performance. In addition, the type of amphiphilic molecules on the Ag / AgX nanocomposite visible light photocatalytic performance is also greatly affected. Polymer System (PVP or PEG) obtained in the best photocatalytic silver halide .

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