Synthesis of PAN Fiber Supported Fe(bpy)32+ for RhB Degradation under Visible Light Irradiation

2012 ◽  
Vol 268-270 ◽  
pp. 225-228
Author(s):  
Zhen Bang Han ◽  
Jia Guo ◽  
Wei Li
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Dye Degradation ◽  
Visible Region ◽  
Light Irradiation ◽  
Pan Fiber ◽  
Fenton Catalyst ◽  
Ionic Bonds ◽  
Coordination Effect

The amidoximated Polyacrylonitrile (PAN) fiber was applied for the support to immobilize Fe(bpy)32+ through ionic bonds, and the obtained fibrous complex was used as heterogeneous Fenton catalyst for the degradation of Rhodamine B under visible light irradiation. The results indicated that increasing Fe(bpy)32+ concentration in solution led to higher Fe(bpy)32+ content on the prepared catalysts, and the amidoxime groups helped greatly for the immobilization of Fe(bpy)32+ via coordination effect. This catalyst exhibits an obvious absorption in the visible region and could effectively degrade Rhodamine B in the presence of H2O2 under visible light irradiation. In addition, no deactivation of the catalyst was observed even after five consecutive runs of dye degradation.

Synthesis of Ilmenite NiTiO3 Rods and Effect of pH on Rhodamine B Textile Dye Degradation under LED Visible-Light Irradiation

2021 ◽  
Author(s):  
Nguyen Thi Thu Trang ◽  
Do Manh Khang ◽  
Dang Duc Dung ◽  
Nguyen Ngoc Trung ◽  
Nguyen Thanh Phuong ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Dye Degradation ◽  
Light Irradiation ◽  
Textile Dye ◽  
Effect Of Ph

Visible-Light-Induced Degradation of Rhodamine B by Wool-Fe Catalyst

2014 ◽  
Vol 997 ◽  
pp. 229-232 ◽  
Author(s):  
Ying Ye ◽  
Yang Hu ◽  
Shi Xiong Yi ◽  
Sheng Sun ◽  
Yi Min Deng
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Visible Region ◽  
Light Irradiation ◽  
Ion Concentration ◽  
Ferric Ion ◽  
Fe Catalyst ◽  
Degradation Of Dyes ◽  
Catalyst Dosage

The wool fiber was applied for the support to immobilize ferric ion at room temperature, and the wool-Fe complexes obtained were used as heterogeneous Fenton catalyst for the degradation of Rhodamine B under visible light irradiation. Some factors affecting the degradation of dyes such as ferric ion concentration, catalyst dosage and pH values were investigated. In addition, the photo catalytic degradation of dyes was examined by UV-Vis spectra. The results indicated that increasing ferric ion concentration and catalyst dosage in solution led to the higher decoloration rate of dyes with pH≤6.0. The wool-Fe catalyst exhibits an obvious absorption in the visible region and could effectively degrade Rhodamine B in the presence of H2O2under visible light irradiation.

scholarly journals Visible Light Induced Photocatalytic Performance of Mn-Sno2@Zno Nanocomposite for High Efficient Cationic Dye Degradation

2021 ◽  
Author(s):  
S. Asaithambi ◽  
P. Sakthivel ◽  
M. Karuppaiah ◽  
V. Balaji ◽  
R. Yuvakkumar ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Optical Absorption ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Dye Degradation ◽  
Energy State ◽  
Light Irradiation ◽  
High Efficient ◽  
Mn Doped

Abstract In this work, we have synthesized Mn-doped SnO2@ZnO nanocomposite for photo degradation of Methylene blue and Rhodamine B dyes upon visible light irradiation. The crystal structure, functional group, optical absorption, defect related emission, morphology, purity and binding energy state of synthesized samples were identified by using various analytical tools. The optical absorption shift and the reduction of band gap values are confirming the formation of hetero-junction of SnO2@ZnO composites. The Mn-SnO2@ZnO hetero-junction effectively induces the photo-generated charge carrier separation and enriches the charge transfer which helps in enhancing the photo-catalytic activities. The photocatalytic degradation results clearly indicate that the Mn-doped SnO2@ZnO nanocomposite has higher degradation efficiency of 98 % and 92 % for the Methylene blue and Rhodamine B dyes, respectively and is higher than the other synthesized samples. The present study reveals a low cost and highly efficient photo-catalyst which works up on visible light irradiation for the purification of waste water from industries.

Photocatalytic Degradation of Methylene Blue over Co-Ag3VO4 under Visible Light Irradiation

2011 ◽  
Vol 335-336 ◽  
pp. 1385-1390 ◽  
Author(s):  
Shuo Wiei Zhao ◽  
Hui Xu ◽  
Hua Ming Li ◽  
Yuan Guo Xu
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Absorption Edge ◽  
Diffuse Reflectance Spectroscopy ◽  
Dye Degradation ◽  
Light Irradiation ◽  
Experimental Conditions ◽  
X Ray

In order to improve the photocatalytic activity, Co was successfully loaded into Ag3VO4 by using impregnation process. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS) and diffuse reflectance spectroscopy (DRS). The XRD and SEM–EDS analyses revealed that Co ion was dispersed on Ag3VO4. The DRS results indicated that the absorption edge of the Co–Ag3VO4 catalyst shifted to longer wavelength. The enhanced photocatalytic activity of Co–Ag3VO4 for Methylene Blue(MB) dye degradation under visible light irradiation was due to its wider absorption edge and higher separation rate of photo-generated electron and holes. In the experimental conditions, it is demonstrated that the MB was effectively degraded by more than 95% within 40 min when the Co–Ag3VO4 catalyst was calcined at 300°C with 1 wt.% Co content.

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