ORIGINAL RESEARCH
Visible Light-Driven Photocatalytic Degradation of 1,2,4-trichlorobenzene with Synthesized Co3O4 Photocatalyst
Chuang Wang 1, 2
,  
Bozhi Ren 1, 2, 3  
,  
Baolin Hou 1, 2
,  
 
 
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1
Hunan Provincial Key Laboratory of Shale Gas Resource Exploitation, Xiangtan, P.R. China
2
School of Civil Engineering, Hunan University of Science and Technology, Xiangtan, P.R. China
3
Key Laboratory of Theoretical Organic Chemistry and Functional Molecule, Ministry of Education, Xiangtan, P.R. China
4
School of Science and Sport, University of the West of Scotland, Paisley, United Kingdom
Online publish date: 2018-04-13
Publish date: 2018-05-30
Submission date: 2017-08-02
Final revision date: 2017-09-23
Acceptance date: 2017-09-24
 
Pol. J. Environ. Stud. 2018;27(5):2285–2292
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ABSTRACT:
A cubic crystal form Co3O4 was synthesized using the sol-gel method and applied as catalyst in the visible light-driven photocatalytic degradation of 1,2,4-trichlorobenzene (1,2,,4-TCB). 1,2,4-TCB removal efficiency initially increased and was followed by a gentle decrease as the Co3O4 dosage increased, with the optimal dosage of 2.0 g/L. The degradation rate changed positively with light intensity and reaction temperature. However, pH exerted only a slight effect on 1,2,4-TCB degradation. Strong acidic and basic conditions were conducive to the photocatalytic degradation of 1,2,4-TCB. The optimal parameters for the photocatalytic degradation of 1,2,4-TCB were found at a Co3O4 dosage of 2.0 g/L, 350 W of illumination intensity, initial 1,2,4-TCB concentration of 7.5 mg/L at 30ºC, with 1,2,4-TCB removal efficiency of 90.13% after 6.0 hours photocatalytic degradation. The Co3O4 synthesized in the study with high-purity and stable properties guaranteed its high catalytic activity and stability. The possible mechanisms of visible light-driven photocatalytic degradation of 1,2,4-TCB with synthesized Co3O4 photocatalyst were also proposed.
CORRESPONDING AUTHOR:
Bozhi Ren   
Hunan university of science and technology, Hunan university of science and technology, Xiangtan, Hunan, China, 411201 Xiangtan, China
eISSN:2083-5906
ISSN:1230-1485