scholarly journals Highly Efficient Photocatalytic and Antimicrobial AgGaCl Tri-Doped ZnO Nanorods for Water Treatment under Visible Light Irradiation

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 752
Author(s):  
Marlene N. Cardoza-Contreras ◽  
Samuel Sánchez-Serrano ◽  
Oscar E. Contreras
Keyword(s):  
Methylene Blue ◽  
Antimicrobial Activity ◽  
Water Treatment ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Zno Nanorods ◽  
Precursor Solution ◽  
Light Irradiation ◽  
Microwave Assisted Synthesis ◽  
Doped Zno

The aim of the present study is to analyze the synergy of antimicrobial elements, such as Ga, Ag and Cl by incorporating them in ZnO nanorods and measuring their antimicrobial and photocatalytic activity under visible light irradiation for water treatment. AgGa-doped ZnO nanorods and AgGaCl-doped ZnO nanorods on polyethylene substrate were prepared by a simple and fast microwave assisted synthesis. HCl was used in order to lower the pH of the precursor solution and favor Ga and Cl incorporation in the ZnO nanorods. The synthesized undoped and doped ZnO nanorods were analyzed with SEM, EDX, XRD and CL. The photocatalytic properties of the nanorods were evaluated via methylene blue degradation under visible light irradiation. Antimicrobial activity of the nanorods was measured via growth kinetics of Vibrio parahaemolyticus. It was found that AgGaCl-doped ZnO nanorods improve the methylene blue photo-degradation and above all, the antimicrobial activity of the AgGaCl tri-doped ZnO nanorods showed a lethal effect on the bacteria’s growth. This work shows that AgGaCl NRs are an excellent alternative for the development of sustainable water treatment devices and antimicrobial applications.

scholarly journals Comparison of photocatalytic activity of ZnO, Ag-ZnO, Cu-ZnO, Ag, Cu-ZnO and TPPS/ZnO for the degradation of methylene blue under UV and visible light irradiation

2021 ◽  
Author(s):  
Mahboubeh Rabbani ◽  
Javad Shokrayian ◽  
Rahmatollah Rahimi ◽  
Rezvaneh Amrollahi
Keyword(s):  
Methylene Blue ◽  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Diffuse Reflectance Spectroscopy ◽  
Zno Nanorods ◽  
Light Irradiation ◽  
Zinc Oxide Nanorods ◽  
Ft Ir

Abstract In this study, Zinc Oxide and Silver and Copper-doped Zinc Oxide nanorods were synthesized by a simple template-free precipitation technique. In addition, meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS4) was prepared and immobilized on ZnO nanorods (TPPS/ZnO). The synthesized photocatalysts were characterized by various techniques such as X-Ray Powder Diffraction (XRD), Scanning Electron Microscopy (SEM), UV-visible Spectroscopy, Diffuse Reflectance Spectroscopy (DRS), and Fourier Transform Infrared Spectroscopy (FT-IR). The potential of the obtained photocatalysts in the degradation of methylene blue was investigated under UV and visible light irradiation. The results revealed that the photocatalytic activity of TPPS/ZnO was higher than those of the pure ZnO and doped ZnO under visible light irradiation.

Photocatalytic synthesis of unsymmetrical thiourea derivatives via visible-light irradiation using nitrogen-doped ZnO nanorods

2020 ◽  
Vol 44 (34) ◽  
pp. 14505-14512
Author(s):  
Mehdi Koohgard ◽  
Abdollah Masoudi Sarvestani ◽  
Mona Hosseini-Sarvari
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Zno Nanorods ◽  
Environmentally Friendly ◽  
Light Irradiation ◽  
Thiourea Derivatives ◽  
Nitrogen Doped ◽  
Doped Zno ◽  
Photocatalytic Synthesis

N-ZnO as a photocatalyst under visible-light irradiation promoted an environmentally friendly route for the synthesis of unsymmetrical thiourea derivatives.

scholarly journals Fabrication of AgCl/Ag3PO4/graphitic carbon nitride heterojunctions for enhanced visible light photocatalytic decomposition of methylene blue, methylparaben and E. coli

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 6383-6394 ◽  
Author(s):  
Haishuai Li ◽  
Linlin Cai ◽  
Xin Wang ◽  
Huixian Shi
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Light Irradiation ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Decomposition ◽  
E Coli ◽  
Visible Light Photocatalytic

A noval ternary nanocomposite AgCl/Ag3PO4/g-C3N4 was successfully synthesized for photocatalytic degradation of methylene blue, methylparaben and inactivation of E. coli under visible light irradiation, showing excellent photocatalytic degradation performance and stability.

ZrO2/g-C3N4 with enhanced photocatalytic degradation of methylene blue under visible light irradiation

2014 ◽  
Vol 29 (20) ◽  
pp. 2473-2482 ◽  
Author(s):  
Yingchang Ke ◽  
Hongxu Guo ◽  
Dongfang Wang ◽  
Jianhua Chen ◽  
Wen Weng
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Image Position

Abstract

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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