Transition metal elements-doped SnO2 for ultrasensitive and rapid ppb-level formaldehyde sensing

Zejun Han; Yunxiang Tang; Guixia Lu; Yuan Qi; Hao Wu; Zhengyi Yang; Hecheng Han; Xue Zhang; Lili Wu; Zhou Wang; Jiurong Liu; Fenglong Wang

doi:10.1016/j.heliyon.2023.e13486

Transition metal elements-doped SnO₂ for ultrasensitive and rapid ppb-level formaldehyde sensing

Zejun Han (Co-first Author), Yunxiang Tang (Co-first Author), Guixia Lu^*, Yuan Qi, Hao Wu, Zhengyi Yang, Hecheng Han, Xue Zhang, Lili Wu^*, Zhou Wang, Jiurong Liu^*, Fenglong Wang^*

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

12 Citations (Scopus)

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Abstract

Pristine SnO₂, Fe-doped SnO₂ and Ni-doped SnO₂ were synthesized using facile hydrothermal method. Analysis based on XRD, TEM and UV–Vis DRS measurements demonstrated the successful insertion of Fe and Ni dopants into SnO₂ crystal. Formaldehyde-detection measurements revealed that transition metal-doped SnO₂ exhibited improved formaldehyde-sensing properties compared with that of pristine SnO₂. When the amount of incorporated dopant (Fe or Ni) was 4 at.%, the most effective enhancement on sensing performance of SnO₂ was obtained. At 160 °C, the 4 at.% Fe–SnO₂ and 4 at.% Ni–SnO₂ exhibited higher response values of 7.52 and 4.37 with exposure to low-concentration formaldehyde, respectively, which were 2.4 and 1.4 times higher than that of pristine SnO₂. The change of electronic structure and crystal structure as well as catalytic effect of transition metals are chiefly responsible for the enhanced sensing properties. © 2023

Original language	English
Article number	e13486
Journal	Heliyon
Volume	9
Issue number	2
Online published	4 Feb 2023
DOIs	https://doi.org/10.1016/j.heliyon.2023.e13486
Publication status	Published - Feb 2023

Research Keywords

Catalytic effect
Crystal structure
Electronic structure
Fe and Ni dopants
Formaldehyde sensing
SnO2

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@article{1791cead246b4bdeb2af6b0203fcbf99,

title = "Transition metal elements-doped SnO2 for ultrasensitive and rapid ppb-level formaldehyde sensing",

abstract = "Pristine SnO2, Fe-doped SnO2 and Ni-doped SnO2 were synthesized using facile hydrothermal method. Analysis based on XRD, TEM and UV–Vis DRS measurements demonstrated the successful insertion of Fe and Ni dopants into SnO2 crystal. Formaldehyde-detection measurements revealed that transition metal-doped SnO2 exhibited improved formaldehyde-sensing properties compared with that of pristine SnO2. When the amount of incorporated dopant (Fe or Ni) was 4 at.%, the most effective enhancement on sensing performance of SnO2 was obtained. At 160 °C, the 4 at.% Fe–SnO2 and 4 at.% Ni–SnO2 exhibited higher response values of 7.52 and 4.37 with exposure to low-concentration formaldehyde, respectively, which were 2.4 and 1.4 times higher than that of pristine SnO2. The change of electronic structure and crystal structure as well as catalytic effect of transition metals are chiefly responsible for the enhanced sensing properties. {\textcopyright} 2023",

keywords = "Catalytic effect, Crystal structure, Electronic structure, Fe and Ni dopants, Formaldehyde sensing, SnO2",

author = "Zejun Han and Yunxiang Tang and Guixia Lu and Yuan Qi and Hao Wu and Zhengyi Yang and Hecheng Han and Xue Zhang and Lili Wu and Zhou Wang and Jiurong Liu and Fenglong Wang",

year = "2023",

month = feb,

doi = "10.1016/j.heliyon.2023.e13486",

language = "English",

volume = "9",

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TY - JOUR

T1 - Transition metal elements-doped SnO2 for ultrasensitive and rapid ppb-level formaldehyde sensing

AU - Han, Zejun

AU - Tang, Yunxiang

AU - Lu, Guixia

AU - Qi, Yuan

AU - Wu, Hao

AU - Yang, Zhengyi

AU - Han, Hecheng

AU - Zhang, Xue

AU - Wu, Lili

AU - Wang, Zhou

AU - Liu, Jiurong

AU - Wang, Fenglong

PY - 2023/2

Y1 - 2023/2

N2 - Pristine SnO2, Fe-doped SnO2 and Ni-doped SnO2 were synthesized using facile hydrothermal method. Analysis based on XRD, TEM and UV–Vis DRS measurements demonstrated the successful insertion of Fe and Ni dopants into SnO2 crystal. Formaldehyde-detection measurements revealed that transition metal-doped SnO2 exhibited improved formaldehyde-sensing properties compared with that of pristine SnO2. When the amount of incorporated dopant (Fe or Ni) was 4 at.%, the most effective enhancement on sensing performance of SnO2 was obtained. At 160 °C, the 4 at.% Fe–SnO2 and 4 at.% Ni–SnO2 exhibited higher response values of 7.52 and 4.37 with exposure to low-concentration formaldehyde, respectively, which were 2.4 and 1.4 times higher than that of pristine SnO2. The change of electronic structure and crystal structure as well as catalytic effect of transition metals are chiefly responsible for the enhanced sensing properties. © 2023

AB - Pristine SnO2, Fe-doped SnO2 and Ni-doped SnO2 were synthesized using facile hydrothermal method. Analysis based on XRD, TEM and UV–Vis DRS measurements demonstrated the successful insertion of Fe and Ni dopants into SnO2 crystal. Formaldehyde-detection measurements revealed that transition metal-doped SnO2 exhibited improved formaldehyde-sensing properties compared with that of pristine SnO2. When the amount of incorporated dopant (Fe or Ni) was 4 at.%, the most effective enhancement on sensing performance of SnO2 was obtained. At 160 °C, the 4 at.% Fe–SnO2 and 4 at.% Ni–SnO2 exhibited higher response values of 7.52 and 4.37 with exposure to low-concentration formaldehyde, respectively, which were 2.4 and 1.4 times higher than that of pristine SnO2. The change of electronic structure and crystal structure as well as catalytic effect of transition metals are chiefly responsible for the enhanced sensing properties. © 2023

KW - Catalytic effect

KW - Crystal structure

KW - Electronic structure

KW - Fe and Ni dopants

KW - Formaldehyde sensing

KW - SnO2

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U2 - 10.1016/j.heliyon.2023.e13486

DO - 10.1016/j.heliyon.2023.e13486

M3 - RGC 21 - Publication in refereed journal

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SN - 2405-8440

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JO - Heliyon

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