Photocatalytic degradation of Rose Bengal using a Z-scheme NiFe2O4/α-Fe2O3 heterojunction composite obtained by the Pechini method

被引:0
作者
Galvez-Barbosa, S. [1 ]
Gonzalez, Luis A. [2 ]
机构
[1] Univ Michoacana, Inst Invest Met & Mat, Ave Francisco J Muj S-N,Ciudad Univ, Morelia 58030, Michoacan, Mexico
[2] Inst Politecn Nacl, Ctr Invest & Estudios Avanzados, Ave Ind Metalurg 1062, Ramos Arizpe 25900, Coahuila, Mexico
关键词
Pechini method; Z-scheme; Heterojunction; Photocatalytic; Rose Bengal; NIFE2O4;
D O I
10.1016/j.matlet.2024.137898
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study investigates the relationship between the concentration ratios of Fe:Ni wt% of 60.5:39.5 and 70.5:29.5 in the synthesis of NiFe2O4/alpha-Fe2O3 heterojunction composites (NFHCs) by the Pechini method and their photocatalytic performance for the degradation of Rose Bengal (RB). Results indicate the presence of NiFe2O4 and alpha-Fe2O3 phases in NFHCs formed by octahedral and icosahedral particles with sizes from 20 to 1200 nm. The NFHC, with a Fe:Ni ratio of 70.5:29.5 wt%, achieved a superior RB degradation efficiency of 93 % after 120 min of solar irradiation. This performance was attributed to alpha-Fe2O3 acting as an electron mediator in the Z-scheme heterojunction mechanism.
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页数:5
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