Highly efficient solar light-driven BiOX (X=Br/Cl/I) and BiOY heterojunction (Y=Br/Cl) nano photocatalysts in suspended and immobilised forms for malachite green dye wastewater treatment

Author(s):  
Sukriti Mishra ◽  
Manasa Mandhan ◽  
Hari Mahalingam
Author(s):  
Honglian Liang ◽  
Shujun Wang ◽  
Yanhong Lu ◽  
Ping Ren ◽  
Guihua Li ◽  
...  

Abstract Highly efficient dye wastewater treatment by photocatalytic catalysis commonly requires expensive catalysts, long degradation time and a complicated procedure. Here, we for the first time prepared cheap graphene-doped titanium dioxide microspheres with a simple procedure to degrade dye with high efficiency. When the catalyst concentration was 0.2 g·L−1, the photocatalysis degradation extent of methylene blue solution, methylene green solution and 1,9-dimethyl methylene blue solution reached 96.4, 85.9 and 98.7%, respectively. The results showed that the degradation reactions accorded with the Langmuir–Hinshelwood model, and the photocatalytic reactions belonged to a first-order reaction in the primary stage. Furthermore, different photocatalytic degradation mechanisms were proposed, which have not been found in other literature. This work opened a new route for simple preparation of cheap microspheres in photocatalytic dye wastewater treatment with high efficiency.


2015 ◽  
Vol 490 ◽  
pp. 42-49 ◽  
Author(s):  
Lakshi Saikia ◽  
Diganta Bhuyan ◽  
Mrinal Saikia ◽  
Banajit Malakar ◽  
Dipak Kumar Dutta ◽  
...  

2020 ◽  
Vol 63 (5-6) ◽  
pp. 564-574 ◽  
Author(s):  
D. A. Solís-Casados ◽  
J. Martínez-Peña ◽  
S. Hernández-López ◽  
L. Escobar-Alarcón

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