紫外光表面處理對ZnO納米粒子的晶體結(jié)構(gòu)與光學(xué)性質(zhì)的影響
發(fā)布時間:2018-11-27 08:48
【摘要】:利用溶膠凝膠法制備了ZnO納米粒子,用紫外光照射對其進行表面處理.探討了表面處理對ZnO納米粒子晶體結(jié)構(gòu)與光學(xué)性質(zhì)的影響.結(jié)果顯示:在晶體結(jié)構(gòu)方面,紫外光照射會降低ZnO納米粒子的團聚現(xiàn)象,縮短晶格常數(shù),使其所受應(yīng)力由壓縮應(yīng)力釋放變?yōu)樯鞆垜?yīng)力,增大表面能,使能量最佳化并穩(wěn)定而導(dǎo)致ZnO納米粒子形成再構(gòu).在光學(xué)性質(zhì)方面,紫外光照射會使ZnO納米粒子表面產(chǎn)生較多的氧空位,而氧空位又會使其表面容易吸附羥基,使得ZnO納米粒子變得更加親水.
[Abstract]:ZnO nanoparticles were prepared by sol-gel method and treated by UV irradiation. The effect of surface treatment on the crystal structure and optical properties of ZnO nanoparticles was investigated. The results show that UV irradiation can reduce the agglomeration of ZnO nanoparticles, shorten the lattice constant, change the stress from compressive stress to tensile stress, and increase the surface energy. Energy optimization and stabilization result in the reconfiguration of ZnO nanoparticles. In terms of optical properties, ultraviolet irradiation will lead to more oxygen vacancies on the surface of ZnO nanoparticles, and oxygen vacancies will make it easy to adsorb hydroxyl groups on the surface, which makes ZnO nanoparticles become more hydrophilic.
【作者單位】: 漢中職業(yè)技術(shù)學(xué)院機電工程系;陜西理工大學(xué)物理與電信工程學(xué)院;漢中市產(chǎn)品質(zhì)量監(jiān)督檢驗所;
【基金】:國家自然科學(xué)基金資助(41105107) 陜西省自然科學(xué)基礎(chǔ)研究計劃基金資助(2012JM5014) 陜西省教育廳科學(xué)研究計劃基金資助(2013JK0617)
【分類號】:TB383.1;TN304.21
[Abstract]:ZnO nanoparticles were prepared by sol-gel method and treated by UV irradiation. The effect of surface treatment on the crystal structure and optical properties of ZnO nanoparticles was investigated. The results show that UV irradiation can reduce the agglomeration of ZnO nanoparticles, shorten the lattice constant, change the stress from compressive stress to tensile stress, and increase the surface energy. Energy optimization and stabilization result in the reconfiguration of ZnO nanoparticles. In terms of optical properties, ultraviolet irradiation will lead to more oxygen vacancies on the surface of ZnO nanoparticles, and oxygen vacancies will make it easy to adsorb hydroxyl groups on the surface, which makes ZnO nanoparticles become more hydrophilic.
【作者單位】: 漢中職業(yè)技術(shù)學(xué)院機電工程系;陜西理工大學(xué)物理與電信工程學(xué)院;漢中市產(chǎn)品質(zhì)量監(jiān)督檢驗所;
【基金】:國家自然科學(xué)基金資助(41105107) 陜西省自然科學(xué)基礎(chǔ)研究計劃基金資助(2012JM5014) 陜西省教育廳科學(xué)研究計劃基金資助(2013JK0617)
【分類號】:TB383.1;TN304.21
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