Bismuth-based nanocomposites as potential materials for indoor air treatment

被引：0
作者：
Martínez-Montelongo, Jorge H. [1 ]
Pineda-Arellano, Carlos A. [2 ]
Hernandez-Rangel, Rafael [1 ]
Jiménez-González, M.L. [1 ]
Betancourt, Israel [3 ]
Peralta-Hernández, Juan Manuel [4 ]
Medina-Ramírez, Iliana E. [1 ]
机构：
[1] Chemistry Department, Universidad Autónoma de Aguascalientes, Av. Universidad 940, Ags, Aguascalientes
[2] CONAHCYT-Centro de Investigaciones en Óptica, A.C. Unidad Aguascalientes, Prol. Constitución 607, Fracc. Reserva Loma Bonita, Ags, Aguascalientes
[3] Instituto de Investigaciones en Materiales, Universidad Nacional Autonoma de México
[4] Departamento de Química, División de Ciencias Naturales y Exactas, Campus Guanajuato, Guanajuato
来源：
Chemosphere | 2024年 / 367卷
关键词：
Compendex;
D O I：
10.1016/j.chemosphere.2024.143539
中图分类号：
学科分类号：
摘要：
Air pollution is a worldwide health hazard; thus, improving air quality is a demanding need. Photocatalysis is a robust strategy for air treatment. The boosted activity of the photocatalytic system depends on tuning their properties for the particular application. BiOX (X: Cl, I) compounds are emergent photocatalytic systems with numerous advantages for air treatment. However, their optical properties (Eg) and fast recombination of active species (e−/h+) limit their practical applications. In this study, we remark on the properties of BiOX-GO systems for indoor air purification. We use a microwave-activated solvothermal technique to synthesize the nanomaterials (NMs). BiOX NMs exhibit hierarchical 3D structures, crystallinity, and tunable optical absorption properties. BiOX-GO composites present an enhanced visible-light photocatalytic activity due to the electron acceptor capacity of GO and modification of Eg. The indoor air disinfection capacity of the NMs ranked as follows: BiOCl-GO (96.7%) > BiOI-GO (96.2%) > BiOI (89.2%) > BiOCl (79%). The higher efficiency under visible light of BiOCl-GO can be related to the presence of oxygen vacancies, strong oxidation potential, and single crystalline phase of the materials. Due to the abundance and biocompatibility of bismuth-containing compounds, together with their enhanced visible light activity, BiOX become potent candidates for environmentally sustainable remediation technologies. © 2024 Elsevier Ltd
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