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Chemical fabrication, structural characterization and photocatalytic water splitting application of Sr-doped SnO2 nanoparticles

Authors
  • Jain, Sapan K
  • Pandit, Nayeem Ahmad
  • Fazil, Mohd
  • Ali, Syed Asim
  • Ahmed, Jahangeer
  • Alshehri, Saad M
  • Mao, Yuanbing
  • Ahmad, Tokeer
Type
Published Article
Journal
Nanotechnology
Publisher
IOP Publishing
Publication Date
Jun 14, 2022
Volume
33
Issue
35
Identifiers
DOI: 10.1088/1361-6528/ac705a
Source
ioppublishing
Keywords
Disciplines
  • Materials: properties, characterization or tools
License
Unknown

Abstract

Semiconductor photocatalysis has gained considerable attention in recent years due to their enabling nature to convert solar energy into fuels of renewable hydrocarbon. However, many of them suffer from some drawbacks like the inability to visible light irradiation and wide band gaps. Herein, we have synthesized monophasic strontium (Sr) doped SnO2 nanoparticles by a cost-effective and environmental friendly hydrothermal method. As-synthesized nanoparticles showed rutile crystalline structure with irregular and rough cubical shape and no other elemental impurities. Sr-doped SnO2 nanoparticles show a constant decrease in bandgap with increasing dopant concentration, which is estimated for excellent photocatalytic activity. The photocatalytic water splitting of as-prepared Sr-doped SnO2 nanoparticles for H2 generation shows a large influence of the increasing dopant concentration related to the narrowing bandgap on H2 generation rate. Hence, the tunable bandgap with adjusted dopant concentration indicates that band gap tuning through doping for produced nanostructures may open up a new opportunities for photocatalytic and other optoelectronic applications.

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