Photocatalytic Degradation of Methylene Blue by Magnetic Opal/Fe3O4 Colloidal Crystals under Visible Light Irradiation

被引：3

作者：

Carmona-Carmona, Abraham Jorge ^{[1
]}

Mora, Enrique Sanchez ^{[2
]}

Flores, Jesus Ivan Pena ^{[2
]}

Marquez-Beltran, Cesar ^{[2
]}

Castaneda-Antonio, Maria Dolores ^{[3
]}

Gonzalez-Reyna, Marlen Alexis ^{[4
]}

Barrera, Maria Concepcion ^{[5
]}

Misaghian, Khashayar ^{[6
,7
]}

Lugo, Jesus Eduardo ^{[1
,6
,7
]}

Toledo-Solano, Miller ^{[8
]}

机构：

[1] Benemerita Univ Autonoma Puebla, Fac Ciencias Fisico Matemat, Puebla 72570, Mexico

[2] Benemerita Univ Autonoma Puebla, Inst Fis Luis Rivera Terrazas, Puebla 72570, Mexico

[3] Inst Ciencias BUAP, Ctr Invest Ciencias Microbiol, Puebla 72570, Mexico

[4] Univ Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, Campus UNAM 3001, Queretaro 76230, Mexico

[5] Univ Veracruzana, Fac Ciencias Quim, Coatzacoalcos 96538, Mexico

[6] Univ Montreal, Faubert Lab, Montreal, PQ H3T 1P1, Canada

[7] Sage Sentinel Smart Solut, 1919-1 Tancha, Onna Son, Okinawa 9040495, Japan

[8] Benemerita Univ Autonoma Puebla, Fac Ciencias Fisico Matemat, CONAHCYT, Puebla 72570, Mexico

来源：

PHOTOCHEM | 2023年 / 3卷 / 04期

关键词：

photocatalytic degradation; composites; methylene blue; HPLC; SILICA NANOSPHERES; THIN-FILMS; AZO-DYES; SIZE; NANOCOMPOSITES; NANOPARTICLES; TIO2; PHOTODEGRADATION; NANOSTRUCTURES; FABRICATION;

D O I：

10.3390/photochem3040024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, opal-magnetite photocatalysts based on SiO2 artificial opal crystals infiltrated with different concentrations of Fe3O4 nanoparticles (NPs) were synthesized using a combination of lateral infiltration and co-assembly methods. By adjusting the concentration of Fe3O4 NPs in the SiO2 opal crystal, the energy band gap (Eg) was tuned to enable efficient degradation of methylene blue (MB) under visible light (410 nm and 575 nm). The photocatalytic process involved two stages: MB adsorption on the surface due to charge differences in the composite film and subsequent degradation through oxidative radicals on the catalyst's surface. The developed material exhibited potential for applications in water remediation.

引用

页码：390 / 407

页数：18

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