Enhanced photodegradation by RGO/ZnO core-shell nanostructures

CCUR > College of Natural Science and Engineering > College of Engineering > Department of Chemical & Materials Engineering > journal articles > Item 987654321/48889

Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/48889

Title:	Enhanced photodegradation by RGO/ZnO core-shell nanostructures
Authors:	Wang, CC (Wang, Chih-Chiang) Shieu, FS (Shieu, Fuh-Sheng) Shih, HC (Shih, Han C.)
Contributors:	化材系
Keywords:	RGO/ZnO core-shell nanostructures Photocatalysts Visible light Localized surface plasmon resonance
Date:	2020-02
Issue Date:	2020-12-11 14:36:44 (UTC+8)
Abstract:	RGO/ZnO core-shell nanostructures were synthesized by a simple sol-gel method and then heated to 500 degrees C at 4 x 10(-3) Torr to remove moisture. The photodegradation efficiency and its related rate constant (k) were evaluated by using it in the degradation of methylene blue (MB, C16H18N3ClS) solution. The RGO/ZnO CSNs has a high photodegradation efficiency, which is attributable to the increased specific surfaces area, enhanced absorption of the visible light (lambda = 380-780 nm), the defect levels of VO2- and Zn-i(2+) which supply the extra electrons, highly effective charge-carrier transfer, and localized surface plasmon resonance (LSPR) at the interface between dielectric ZnO and electric RGO, resulting in the effective absorbance of MB molecules and an increase in the electron-hole lifetime, and a consequent increase in photodegradation efficiency. A critical loading of 800 ppm RGO was identified and found to provide an efficiency of higher than 93 % in 15 min under visible radiation.
Relation:	JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING卷冊: 8 期: 1 文獻號碼: 103589
Appears in Collections:	[Department of Chemical & Materials Engineering] journal articles

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	240	View/Open

View Licence

Loading...