Publication result detail

Sulfur treated 1D anodic TiO2nanotube layers for significant photo- and electroactivity enhancement

KRBAL, M.; NG, S.; MOTOLA, M.; HROMÁDKO, L.; DVOŘÁK, F.; PROKOP, V.; SOPHA, H.; MACÁK, J.

Original Title

Sulfur treated 1D anodic TiO2nanotube layers for significant photo- and electroactivity enhancement

English Title

Sulfur treated 1D anodic TiO2nanotube layers for significant photo- and electroactivity enhancement

Type

WoS Article

Original Abstract

In this work, we show that sulfur treated 1D anodic TiO2 nanotube layers lead to improved photo-electrochemical and catalytic properties compared to the blank nanotube layers. This treatment was performed in the evacuated quartz ampoules in the temperature range from 250 to 450 degrees C. Inspection of the sulfurized nanotube layers via scanning electron microscopy (SEM) and X-ray diffraction (XRD) has disclosed a gradual crystal growth within nanotube walls, represented by TiS2 or TiS3 phases. Optimally sulfurized TiO2 nanotube layers exhibit 3 times enhanced photocurrent in the UV spectral region, compared to the blank counterpart, with a shift of the light absorption up to the wavelength of 550 nm. In addition, the photocatalytic decomposition of a methylene blue aqueous solution using a wavelength of 365 nm is gradually improved with increasing sulfurization temperature. The highest photocatalytic decomposition rate is 2.3 times larger compared to the blank TiO2 nanotube layer. The application of sulfurized TiO2 nanotube layers for the electrocatalytic hydrogen evolution is also discussed. (C) 2019 The Authors. Published by Elsevier Ltd.

English abstract

In this work, we show that sulfur treated 1D anodic TiO2 nanotube layers lead to improved photo-electrochemical and catalytic properties compared to the blank nanotube layers. This treatment was performed in the evacuated quartz ampoules in the temperature range from 250 to 450 degrees C. Inspection of the sulfurized nanotube layers via scanning electron microscopy (SEM) and X-ray diffraction (XRD) has disclosed a gradual crystal growth within nanotube walls, represented by TiS2 or TiS3 phases. Optimally sulfurized TiO2 nanotube layers exhibit 3 times enhanced photocurrent in the UV spectral region, compared to the blank counterpart, with a shift of the light absorption up to the wavelength of 550 nm. In addition, the photocatalytic decomposition of a methylene blue aqueous solution using a wavelength of 365 nm is gradually improved with increasing sulfurization temperature. The highest photocatalytic decomposition rate is 2.3 times larger compared to the blank TiO2 nanotube layer. The application of sulfurized TiO2 nanotube layers for the electrocatalytic hydrogen evolution is also discussed. (C) 2019 The Authors. Published by Elsevier Ltd.

Keywords

TiO2nanotube layers, Sulfurization, Photocurrent, Photocatalysis, Photoelectrochemistry

Key words in English

TiO2nanotube layers, Sulfurization, Photocurrent, Photocatalysis, Photoelectrochemistry

Authors

KRBAL, M.; NG, S.; MOTOLA, M.; HROMÁDKO, L.; DVOŘÁK, F.; PROKOP, V.; SOPHA, H.; MACÁK, J.

RIV year

2020

Released

01.12.2019

ISBN

2352-9407

Periodical

Applied Materials Today

Volume

17

Number

1

State

Kingdom of the Netherlands

Pages from

104

Pages to

111

Pages count

8

URL

https://www.sciencedirect.com/science/article/pii/S2352940719305608?via%3Dihub

BibTex

@article{BUT158990,
  author="Miloš {Krbal} and Siow Woon {Ng} and Martin {Motola} and Luděk {Hromádko} and Filip {Dvořák} and Vít {Prokop} and Hanna Ingrid {Sopha} and Jan {Macák}",
  title="Sulfur treated 1D anodic TiO2nanotube layers for significant photo- and electroactivity enhancement",
  journal="Applied Materials Today",
  year="2019",
  volume="17",
  number="1",
  pages="104--111",
  doi="10.1016/j.apmt.2019.07.018",
  issn="2352-9407",
  url="https://www.sciencedirect.com/science/article/pii/S2352940719305608?via%3Dihub"
}