Characterization and Comparison of Photocatalytic Activity Silver Ion doped on TiO2(TiO2/Ag+) and Silver Ion doped on Black TiO2(Black TiO2/Ag+)

Content Provider	Scilit
Author	Kim, Jin Yi Sim, Ho Hyung Song, Sinae Noh, Yeoung Ah Lee, Hong Woon Kim, Hee Taik
Copyright Year	2018
Description	Journal: Journal of Physics: Conference Series Titanium dioxide $(TiO_{2}$) is one of the representative ceramic materials containing photocatalyst, optic and antibacterial activity. The hydroxyl radical in $TiO_{2}$ applies to the intensive oxidizing agent, hence $TiO_{2}$ is suitable to use photocatalytic materials. Black $TiO_{2}$was prepared through reduction of amorphous $TiO_{2}$ conducting under $H_{2}$ which leads to color changes. Its black color is proven that absorbs 100% light across the whole-visible light, drawing enhancement of photocatalytic property. In this study, we aimed to compare the photocatalytic activity of silver ion doped on TiO_{2}(TiO_{2}$/Ag^{+}$) and silver ion doped on black $TiO_{2}$(black TiO_{2}$/Ag^{+}$) under visible light range. $TiO_{2}$/Ag+ was fabricated following steps. 1) $TiO_{2}$ was synthesized by a sol-gel method from Titanium tetraisopropoxide (TTIP). 2) Then $AgNO_{3}$ was added during an aging process step for silver ion doping on the surface of $TiO_{2}$. Moreover, Black $TiO_{2}$/Ag+ was obtained same as TiO_{2}$/Ag^{+}$ except for calcination under $H_{2}$. The samples were characterized X-ray diffraction (XRD), UV-visible reflectance (UV-vis DRS), and Methylene Blue degradation test. XRD analysis confirmed morphology of $TiO_{2.}$ The band gap of black TiO_{2}$/Ag^{+}$ was confirmed (2.6 eV) through UV-vis DRS, which was lower than TiO_{2}$/Ag^{+}$ (2.9 eV). The photocatalytic effect was conducted by methylene blue degradation test. It demonstrated that black TiO_{2}$/Ag^{+}$ had a photocatalytic effect under UV light also visible light.
Related Links	https://iopscience.iop.org/article/10.1088/1742-6596/987/1/012042/pdf
ISSN	17426588
e-ISSN	17426596
DOI	10.1088/1742-6596/987/1/012042
Journal	Journal of Physics: Conference Series
Issue Number	1
Volume Number	987
Language	English
Publisher	IOP Publishing
Publisher Date	2018-03-01
Access Restriction	Open
Subject Keyword	Journal: Journal of Physics: Conference Series Silver Ion Doped Photocatalytic Activity Doped On Black
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy