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Micro and Nanosystems


ISSN (Print): 1876-4029
ISSN (Online): 1876-4037

Research Article

Synthesis and Photocatalytic Activity of Si-doped TiO2 Nanotube/SnS Hybrids for Environmental Decontamination

Author(s): Ning Ma and Hai-Yan He*

Volume 15, Issue 2, 2023

Published on: 06 September, 2022

Page: [108 - 117] Pages: 10

DOI: 10.2174/1876402914666220628145557

Price: $65


Background: Heterostructures with nanoscale sizes have great superiorities in photocatalytic environment decontaminant because of their efficient interface charge transfer and great surface area.

Objective: This work reports the facile fabrication of nano-tubular TiO2 and Si-doped TiO2 (NTs) hybridizing SnS nanocrystallites and their high-efficient photocatalytic activity.

Methods: The modified hydrothermal processes were used to synthesize the nanotubes. A chemical bath deposition process was used to hybridize SnS nanocrystalline with the nanotubes.

Results: The fabricated nanostructures show wide light absorption in the UV-visible region. The SBET, light absorption, hydrophilicity, and photo-induced super hydrophilicity were enhanced by Si-doping and SnS modification. Moreover, high-efficient interface charge transfer was produced after the SnS modification and further enhanced by the Si doping because of band structure modulation.

Conclusion: Thus, the Si-doped TiO2 nanotubes/SnS heterostructures showed remarkably enhanced photocatalytic and Fenton-like photocatalytic activity in dye wastewater treatment than the TiO2 NTs. This work suggests potential materials and their facile fabrication process for the photocatalytic application of environmental decontamination.

Keywords: Nanotubes, semiconductor, heterojunction, photocatalytic properties, interface effect, environmental decontamination.

Graphical Abstract
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