光催化
亚甲蓝
锐钛矿
纳米颗粒
二氧化钛
吸附
光化学
材料科学
降级(电信)
可见光谱
基础(拓扑)
化学
核化学
化学工程
催化作用
纳米技术
有机化学
复合材料
工程类
数学分析
电信
光电子学
计算机科学
数学
作者
Nasikhudin Nasikhudin,Markus Diantoro,Ahmad Kusumaatmaja,Kuwat Triyana
出处
期刊:Journal of physics
[IOP Publishing]
日期:2018-04-01
卷期号:1011: 012069-012069
被引量:69
标识
DOI:10.1088/1742-6596/1011/1/012069
摘要
Titanium dioxide has been widely studied for its ability to photocatalytic and applications have high performance for photovoltaic applications. In this paper TiO2 nanoparticle was investigated for the degradation of methylene blue under UV light in various pH condition. The TiO2 nanoparticle was characterized by SEM and XRD. The results showed that TiO2 nanoparticle has the structure of anatase and have a particle size of 27 nm. The photocatalytic activity of TiO2 nanoparticle show that the degradation of methylene blue under UV light have dye removal of 97% dye was degraded in 3 h, but the degradation of methylene blue without UV light have dye removal of 15% dye was degraded in 3 h. It indicated that The photocatalytic activity of TiO2 nanoparticle could occur if there the UV light. If not UV light the photocatalytic activity cannot occurs, the degradation of Methylene Blue 15% is not a photocatalytic activity but it is adsorption of Methylene Blue by TiO2 nanoparticle. The photocatalytic activity of TiO2 nanoparticle has pH-sensitive. The photocatalytic activity of TiO2 nanoparticle in acid condition (pH 4.1) is 40%, in neutral condition (pH 7.0) is 90%, and in base condition (pH 9.7) is 97%. The highest photocatalytic activity occurs in base condition, it causes in base condition OH- can be direct reaction with a hole to produce hydroxyl radical (OH*).
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