کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11032801 | 1645135 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
UV-visible light-induced antibacterial and photocatalytic activity of half harmonic generator WO3 nanoparticles synthesized by Pulsed Laser Ablation in water
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, synthesis of WO3 nanoparticles (NPs), using the physically clean method known as laser ablation of a tungsten target immersed in distilled water is reported. Fundamental wavelength of an acousto-optically Q-switched Nd:YAG laser with 13, 18, 23â¯J/cm2 laser fluences was utilized for this purpose. Transmission Electron Microscopy (TEM) associated with Dynamic Light Scattering (DLS) show an increase in average particle size as the laser fluence increases from 13 to 23â¯J/cm2, also with a precise look into the TEM images, the chains of WO3 NPs are observable although the length of the chains decreases while decreasing the laser fluence. Photocatalytic and antimicrobial activity of the products against E. coli (Escherichia coli) bacteria under UV and visible light illumination were investigated and showed that for photocatalytic and antibacterial processes, active surface area and energy band gap play the main roles while illuminating the nanoparticle samples with UV and visible light, respectively. Moreover, anti-UV properties of the products originated from half harmonic generation process were corroborated by PL (photoluminescence) emission studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 85, November 2018, Pages 491-499
Journal: Optical Materials - Volume 85, November 2018, Pages 491-499
نویسندگان
Majid Fakhari, Mohammad Javad Torkamany, Seyed Noureddin Mirnia, Seyed Mohammad Elahi,