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首页> 外文期刊>Journal of Wood Chemistry and Technology >Characterization of Silver Particles in Silver-Containing Activated Carbon Fibers Prepared from Liquefied Wood
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Characterization of Silver Particles in Silver-Containing Activated Carbon Fibers Prepared from Liquefied Wood

机译：液化木材制得的含银活性炭纤维中银颗粒的表征

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摘要

Silver particles in silver-containing activated carbon fibers prepared from liquefied wood were characterized by X-ray diffraction, X-ray photoelectron spectrometer, scanning electron microscope, and nitrogen adsorption isotherms. Silver irons (Ag+) and metallic silver (Ag-0) were detected in fibers, and the amount of Ag-0 was much higher than that of Ag+. Ag-0 were migrated and aggregated together to form silver particles with a wide size (0-5m), which were distributed in micropores, mesopores, and surface of fibers. The mean size of silver particles on the surface was directly related to soaking concentration, while the larger silver particles were easier to peel off from the surface. Also, the increasing micropores and mesopores were blocked by silver particles at higher concentration, and some blocked mesopores were converted into micropores. When the washing treatment was carried out, the silver particles on the surface were removed significantly, resulting in an increase in mesopore quantity. However, most of the silver particles in micropores were firmly supported. The silver-containing activated carbon fibers showed the high and lasting antibacterial activity.
机译：用X射线衍射，X射线光电子能谱仪，扫描电子显微镜和氮吸附等温线对由液化木材制得的含银活性炭纤维中的银颗粒进行了表征。在纤维中检测到银铁（Ag +）和金属银（Ag-0），并且Ag-0的含量远高于Ag +。 Ag-0迁移并聚集在一起形成大尺寸（0-5m）的银颗粒，这些银颗粒分布在微孔，中孔和纤维表面。表面上银颗粒的平均尺寸与浸泡浓度直接相关，而较大的银颗粒则更容易从表面剥离。而且，增加的微孔和中孔被较高浓度的银颗粒阻塞，并且一些阻塞的中孔被转化为微孔。当进行洗涤处理时，表面上的银颗粒被显着去除，导致中孔量的增加。但是，微孔中的大多数银颗粒都得到了牢固的支撑。含银活性炭纤维显示出高而持久的抗菌活性。

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