作者:Elson Longo et al 来源:Scientific Reports 发布时间:2018/9/6 13:47:48
选择字号:
用更高效的方法生产更有杀菌力的钨酸银纳米粒子

论文标题:Towards the scale-up of the formation of nanoparticles on α-Ag2WO4 with bactericidal properties by femtosecond laser irradiation

期刊:Scientific Reports

作者:Elson Longo et al

发表时间:2018/01/30

数字识别码:10.1038/s41598-018-19270-9

原文链接:https://www.nature.com/articles/s41598-018-19270-9?utm_source=Other_website&utm_medium=Website_linksWebsite_links&utm_content=RenLi-MixedBrand-OAB-Multidisciplinary-China&utm_campaign=OAB_USG_JRCN_RL_article_promotion_sciencenet_Sep_1st

近年来,金属钨酸盐,尤其是钨酸银(α-Ag2WO4)的应用潜力越来越受到关注。钨酸银的用途包括光催化,光电继电器或作为传统宽带隙半导体的替代物。最近的研究表明,钨酸银的晶体表现出了金属纳米粒子能生长于半导体框架上的性能,使得该材料在光催化,臭氧探测及抗菌性上有了非常大的潜力。

但是由于现有的生产方法是通过透射电镜来加工,限制了分子结构的生长与控制,所以很难从基础研究过渡到商业用途。在《科学报告》发表的文章Towards the scale-up of the formation of nanoparticles on α-Ag2WO4 with bactericidal properties by femtosecond laser irradiation 里,西班牙贾米一世大学的Juan Andrés和巴西的圣卡洛斯联邦大学的Elson Longo的团队合作并发现了一个更高效地生产钨酸银的方法。

图1:用激光照射生产钨酸银纳米粒子

作者发现在飞秒激光协助的照射下,无需任何特殊条件,即可大量合成Ag及(AgxWyOz)纳米粒子。作者们随即将该结果与之前文献中记录的由电子束照射激发的实验结果进行了比较。在比较结果的基础上,作者们解释了Ag纳米粒子在激光照射下的合成方式。最后,作者们还用耐甲氧西林金黄色葡萄球菌来衡量激光照射得到的纳米粒子的杀菌性,发现其杀菌能力提高了32倍。并获得了一种新型的球型AgxWyOz 纳米粒子。

摘要:In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an α-Ag2WO4 semiconductor network have emerged as promising bactericides, where the semiconductor attracts bacterial agents and Ag nanoparticles neutralize them. However, the production rate of such materials has been limited to transmission electron microscope processing, making it difficult to cross the barrier from basic research to real applications. The interaction between pulsed laser radiation and α-Ag2WO4 has revealed a new processing alternative to scale up the production of the nanocomposite resulting in a 32-fold improvement of bactericidal performance, and at the same time obtaining a new class of spherical AgxWyOz nanoparticles.

阅读论文全文请访问https://www.nature.com/articles/s41598-018-19270-9?utm_source=Other_website&utm_medium=Website_linksWebsite_links&utm_content=RenLi-MixedBrand-OAB-Multidisciplinary-China&utm_campaign=OAB_USG_JRCN_RL_article_promotion_sciencenet_Sep_1st

期刊介绍:Scientific Reports is an online, open access journal from the publishers of Nature. We publish scientifically valid primary research from all areas of the natural and clinical sciences.

The 2016 journal metrics for Scientific Reports are as follows:

•2-year impact factor: 4.259

•5-year impact factor: 4.847

•Immediacy index: 0.647

(来源:科学网)

 
 
 
特别声明:本文转载仅仅是出于传播信息的需要,并不意味着代表本网站观点或证实其内容的真实性;如其他媒体、网站或个人从本网站转载使用,须保留本网站注明的“来源”,并自负版权等法律责任;作者如果不希望被转载或者联系转载稿费等事宜,请与我们接洽。
 
 打印  发E-mail给: 
    
 
以下评论只代表网友个人观点,不代表科学网观点。
SSI ļʱ
 
相关新闻 相关论文

图片新闻
中国超重元素研究加速器装置刷新纪录 彩色油菜花又添7色!总花色达70种
考研复试,导师心仪这样的学生! 地球刚刚经历最热2月
>>更多
 
一周新闻排行 一周新闻评论排行
 
编辑部推荐博文
 
论坛推荐