Atomic Layer Deposition of SnO2-Coated Anodic One-Dimensional TiO(2 )Nanotube Layers for Low Concentration NO2 Sensing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F20%3A39916394" target="_blank" >RIV/00216275:25310/20:39916394 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26620/20:PU137115

Result on the web

<a href="https://pubs.acs.org/doi/10.1021/acsami.0c07791" target="_blank" >https://pubs.acs.org/doi/10.1021/acsami.0c07791</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsami.0c07791" target="_blank" >10.1021/acsami.0c07791</a>

Result language

angličtina

Original language name

Atomic Layer Deposition of SnO2-Coated Anodic One-Dimensional TiO(2 )Nanotube Layers for Low Concentration NO2 Sensing

Original language description

The continuous emission of nitrous oxides contributes to the overall air pollution and deterioration of air quality. In particular, an effective NO2 sensor capable of low concentration detection for continuous monitoring is demanded for safety, health, and wellbeing. The sensing performance of a metal oxide-based sensor is predominantly influenced by the availability of surface area for O-2 adsorption and desorption, efficient charge transport, and size or thickness of the sensing layer. In this study, we utilized anodic one-dimensional (1D) TiO2 nanotube layers of 5 mu m thick which offer large surface area and unidirectional electron transport pathway as a platform to accommodate thin SnO2 coatings as a sensing layer. Conformal and homogeneous SnO2 coatings across the entire inner and outer TiO2 nanotubes were achieved by atomic layer deposition with a controlled thickness of 4, 8, and 16 nm. The SnO2-coated TiO2 nanotube layers attained a higher sensing response than a reference Figaro SnO2 sensor. Specifically, the 8 nm SnO2-coated TiO2 nanotube layer has recorded up to ten-fold enhancement in response as compared to the blank nanotubes for the detection of 1 ppm NO2 at an operating temperature of 300 degrees C with 0.5 V applied bias. This is attributed to the SnO2/TiO2 heterojunction effect and controlled SnO2 thickness within the range of the Debye length. We demonstrated in this work, a tailored large surface area platform based on 1D nanotubes with thin active coatings as an efficient approach for sensing applications and beyond.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20506 - Coating and films

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACS Applied Materials &amp; Interfaces

ISSN

1944-8244

e-ISSN

1944-8252

Volume of the periodical

12

Issue of the periodical within the volume

29

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

33386-33396

UT code for WoS article

000555417200119

EID of the result in the Scopus database

2-s2.0-85088490137