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Acetone sensing applications of Ag modified TiO2 porous nanoparticles synthesized via facile hydrothermal method

Wang, Zhe and Haidry, Azhar Ali and Xie, Lijuan and Zavabeti, Ali and Li, Zhong and Yin, Wenqiang and Lontio Fomekong, Roussin and Saruhan, Bilge (2020) Acetone sensing applications of Ag modified TiO2 porous nanoparticles synthesized via facile hydrothermal method. Applied Surface Science, 533, pp. 147383-147391. Elsevier. doi: 10.1016/j.apsusc.2020.147383. ISSN 0169-4332.

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Abstract

Titanium dioxide, owing to its manifold characteristics, specifically excellent sensitivity and stability under harsh environment, is considered as one of the probable replacements for VOCs gas sensing applications. The response of TiO2 is significantly influenced by its porosity and metal doping. To this context, this report demonstrates a facile one-pot hydrothermal method to synthesize porous TiO2 nanoparticles (NPs) modified with sliver (1–5 mol%). The gas sensing performance of the sensors was investigated by testing their gas response to acetone, which is proved of highly effective for sensor applications. For instance, the sensor based on 2 mol % Ag-TiO2 showed high response (SR ~ 13.9), fast response (11 s) and recovery (14 s) time, good long-term stability (30 days) and good selectivity (SF ~ 12.6) toward 100 ppm acetone against other VOCs. To understand and authenticate the sensing mechanism, the structure and morphology of synthesized NPs was performed by XRD, XPS, SEM, EDS, TEM and HRTEM. Furthermore, a plausible sensing mechanism is discussed on basis of the obtained results.

Item URL in elib:https://elib.dlr.de/136563/
Document Type:Article
Title:Acetone sensing applications of Ag modified TiO2 porous nanoparticles synthesized via facile hydrothermal method
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wang, ZheCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Haidry, Azhar AliCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Xie, LijuanCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Zavabeti, AliCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Li, ZhongCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Yin, WenqiangCollege of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, 211100 Nanjing, ChinaUNSPECIFIED
Lontio Fomekong, RoussinRoussin.LontioFomekong (at) dlr.deUNSPECIFIED
Saruhan, BilgeInstitute for Materials Research, German Aerospace Center, Köln, Germanyhttps://orcid.org/0000-0001-6895-8387
Date:August 2020
Journal or Publication Title:Applied Surface Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:533
DOI :10.1016/j.apsusc.2020.147383
Page Range:pp. 147383-147391
Publisher:Elsevier
ISSN:0169-4332
Status:Published
Keywords:Gas sensors, Titanium Oxide, Acetone sensing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > High Temperature and Functional Coatings
Deposited By: Saruhan-Brings, Dr. Bilge
Deposited On:19 Oct 2020 10:13
Last Modified:03 Nov 2020 10:21

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