Doped tin dioxide (d-SnO2) and its nanostructures : review of the theoretical aspects, photocatalytic and biomedical applications.
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2022
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Nanomaterials based on metal oxides are extensively studied for several applications due
to their versatility. Improvements in their performances can be obtained due to specific structural
modifications. One possible modification is by doping the crystal structure, which can affect the
materials structure and properties, especially in nanosized particles. Electronic features are among the
properties that can be modified through the doping process, consequently morphological and optical
parameters can also be controlled by this process. In this sense, this review presents some modifica-
tions to tin dioxide (SnO2
), one the most studied materials, mainly through the doping process and
their impact on several properties. The article starts by describing the SnO2 structural features and
the computational models used to explain the role of the doping process on these features. Based on
those models, some applications of doped SnO2
, such as photocatalytic degradation of pollutants,
CO2 reduction, and desulfurization of fossil fuels are presented and discussed. Additionally, the
review describes many biological applications related to antimicrobial activity for doped SnO2 and
its nanostructures. Although most of the examples presented in this article are based on the doped
SnO2
, it also presents examples related to SnO2 composites with other nanomaterials forming hetero-
junctions. The metal oxides SnO2
, doped-SnO2 and their nanostructures are promising materials,
with results reported in many fields presented in this review, such as theoretical and computational
chemistry, environmental remediation, nanoparticle morphology control, fossil fuels improvement,
and biomedical applications. Although widely explored, there are still fields for innovation and
advances with tin dioxide nanostructures, for example, in transparent conducting oxides, in forensics
as materials for latent fingerprints visualization, and sensors in medicine for detection of exhaled
volatile organic compounds. Therefore, this article aims to be a reference regarding correlating the
doping processes and the properties presented by the SnO2 nanostructures.
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CO2 photoreduction, Nanoparticle, Desulfurization
Citação
PINTO, A. H. et al. Doped tin dioxide (d-SnO2) and its nanostructures: review of the theoretical aspects, photocatalytic and biomedical applications. Solids v. 3, p. 327–360, 2022. Disponível em: <https://www.mdpi.com/2673-6497/3/2/24>. Acesso em: 11 out. 2022.