Synthesis and characterization of CuO-Mn3O4: application to chromium (VI) photocatalytic reduction

被引：9
作者：
Arulkumar, E. [1 ]
Shree, S. Shanthosh [1 ]
Thanikaikarasan, S. [1 ]
机构：
[1] Saveetha Inst Med & Tech Sci, Saveetha Sch Engn, Dept Phys, Chennai 602105, Tamil Nadu, India
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2024年 / 35卷 / 03期
关键词：
HEXAVALENT CHROMIUM; WATER; PERFORMANCE; CUO; EFFICIENT; NANOSTRUCTURES; NANOCOMPOSITE; DEGRADATION; ADSORPTION; COMPOSITE;
D O I：
10.1007/s10854-023-11904-7
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
CuO-Mn3O4 nanocomposite and its pristine material were synthesized via precipitation method and method and characterized by XRD, SEM with EDX, TEM, UV-DRS, PL, and XPS. XRD, TEM, and SEM analysis prove that the merging of CuO in Mn3O4 changes its matrix from orthorhombic to tetragonal structure. The presence of Cu, Mn, and O elements in each sample is confirmed by EDX analysis, while XPS reveals their oxidation states. 30 mg CuO-Mn3O4 dosage exhibit the highest efficiency (90.37%) in photocatalytic reduction of aqueous Cr(VI) under halogen lamps (250W) irradiation. Finally, Cr(VI) photocatalysis showed that CuO-Mn3O4 reduction should be carried out in acidic medium (pH 5). The CuO-Mn3O4 composite exhibits higher photocurrent (1.09 mu A cm(-2)) compared with pristine CuO (0.21 mu A cm(-2)) and Mn3O4 (0.49 mu A cm(-2)).
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页数：19
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