Porous In2O3 powders prepared by ultrasonic-spray pyrolysis as a NO2-sensing material

Utilization of polymethylmethacrylate microspheres synthesized by ultrasonic-assisted emulsion polymerization as a template

Takeo Hyodo, Shu Ichi Furuno, Eriko Fujii, Katsuhide Matsuo, Suguru Motokucho, Ken Kojio, Yasuhiro Shimizu

研究成果: ジャーナルへの寄稿記事

23 引用 (Scopus)

抄録

NO2-sensing properties of porous In2O3 (pr-In2O3) powders prepared by ultrasonic-spray pyrolysis employing polymethylmethacrylate (PMMA) microspheres as a template has been investigated in this study. The PMMA microspheres were synthesized in water by ultrasonic-assisted emulsion polymerization employing methyl methacrylate monomer, sodium lauryl sulfate as a surfactant and ammonium persulfate as an initiator. The PMMA microspheres synthesized was quite uniform and the particle size was ca. 60.2 nm (measured by dynamic light scattering). The microstructure of pr-In2O3 powders prepared was largely dependent on the kind of In2O3 sources. The pr-In2O3 which was prepared from In(NO3)3 as an In 2O3 source (pr-In2O3(N)) consisted of submicron-sized spherical particles with welldeveloped spherical mesopores (several tens of nanometers in pore diameter) and each oxide wall among pores was constructed with meso-sized In2O3 particles connected continuously. On the other hand, the pr-In2O3 which was prepared from InCl3 as an In2O3 source (pr-In2 O3(Cl)) was composed of a large number of dispersed meso-sized particles and a few submicron-sized dense spherical particles. In contrast, the morphology of conventional In2O3 powder (c-In 2O3) prepared by ultrasonic-spray pyrolysis of PMMAfree In(NO3)3 aqueous solution as a reference was relatively dense and roughly spherical with a diameter of ca. 100-700 nm. The responses to 1.0 and 10ppm NO2 of pr-In2O3 sensors in air were much larger than those of a c-In2O3(N) sensor in the temperature range of less than 250°C and 300°C, respectively. In addition, the response and recovery speeds of both the pr-In2O 3 sensors were much faster than those of the c-In2O 3(N) sensor, because of the well-developed porous structure of the pr-In2O3 sensors.

元の言語英語
ページ(範囲)495-502
ページ数8
ジャーナルSensors and Actuators, B: Chemical
187
DOI
出版物ステータス出版済み - 1 1 2013

Fingerprint

Spray pyrolysis
Emulsion polymerization
Polymethyl Methacrylate
Microspheres
Powders
emulsions
pyrolysis
sprayers
templates
polymerization
ultrasonics
Ultrasonics
sensors
Sensors
Methylmethacrylate
porosity
Ammonium persulfate
Sodium dodecyl sulfate
Dynamic light scattering
initiators

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

これを引用

Porous In2O3 powders prepared by ultrasonic-spray pyrolysis as a NO2-sensing material : Utilization of polymethylmethacrylate microspheres synthesized by ultrasonic-assisted emulsion polymerization as a template. / Hyodo, Takeo; Furuno, Shu Ichi; Fujii, Eriko; Matsuo, Katsuhide; Motokucho, Suguru; Kojio, Ken; Shimizu, Yasuhiro.

:: Sensors and Actuators, B: Chemical, 巻 187, 01.01.2013, p. 495-502.

研究成果: ジャーナルへの寄稿記事

@article{bd4409526f4344359794fcd585861276,
title = "Porous In2O3 powders prepared by ultrasonic-spray pyrolysis as a NO2-sensing material: Utilization of polymethylmethacrylate microspheres synthesized by ultrasonic-assisted emulsion polymerization as a template",
abstract = "NO2-sensing properties of porous In2O3 (pr-In2O3) powders prepared by ultrasonic-spray pyrolysis employing polymethylmethacrylate (PMMA) microspheres as a template has been investigated in this study. The PMMA microspheres were synthesized in water by ultrasonic-assisted emulsion polymerization employing methyl methacrylate monomer, sodium lauryl sulfate as a surfactant and ammonium persulfate as an initiator. The PMMA microspheres synthesized was quite uniform and the particle size was ca. 60.2 nm (measured by dynamic light scattering). The microstructure of pr-In2O3 powders prepared was largely dependent on the kind of In2O3 sources. The pr-In2O3 which was prepared from In(NO3)3 as an In 2O3 source (pr-In2O3(N)) consisted of submicron-sized spherical particles with welldeveloped spherical mesopores (several tens of nanometers in pore diameter) and each oxide wall among pores was constructed with meso-sized In2O3 particles connected continuously. On the other hand, the pr-In2O3 which was prepared from InCl3 as an In2O3 source (pr-In2 O3(Cl)) was composed of a large number of dispersed meso-sized particles and a few submicron-sized dense spherical particles. In contrast, the morphology of conventional In2O3 powder (c-In 2O3) prepared by ultrasonic-spray pyrolysis of PMMAfree In(NO3)3 aqueous solution as a reference was relatively dense and roughly spherical with a diameter of ca. 100-700 nm. The responses to 1.0 and 10ppm NO2 of pr-In2O3 sensors in air were much larger than those of a c-In2O3(N) sensor in the temperature range of less than 250°C and 300°C, respectively. In addition, the response and recovery speeds of both the pr-In2O 3 sensors were much faster than those of the c-In2O 3(N) sensor, because of the well-developed porous structure of the pr-In2O3 sensors.",
author = "Takeo Hyodo and Furuno, {Shu Ichi} and Eriko Fujii and Katsuhide Matsuo and Suguru Motokucho and Ken Kojio and Yasuhiro Shimizu",
year = "2013",
month = "1",
day = "1",
doi = "10.1016/j.snb.2013.02.090",
language = "English",
volume = "187",
pages = "495--502",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",

}

TY - JOUR

T1 - Porous In2O3 powders prepared by ultrasonic-spray pyrolysis as a NO2-sensing material

T2 - Utilization of polymethylmethacrylate microspheres synthesized by ultrasonic-assisted emulsion polymerization as a template

AU - Hyodo, Takeo

AU - Furuno, Shu Ichi

AU - Fujii, Eriko

AU - Matsuo, Katsuhide

AU - Motokucho, Suguru

AU - Kojio, Ken

AU - Shimizu, Yasuhiro

PY - 2013/1/1

Y1 - 2013/1/1

N2 - NO2-sensing properties of porous In2O3 (pr-In2O3) powders prepared by ultrasonic-spray pyrolysis employing polymethylmethacrylate (PMMA) microspheres as a template has been investigated in this study. The PMMA microspheres were synthesized in water by ultrasonic-assisted emulsion polymerization employing methyl methacrylate monomer, sodium lauryl sulfate as a surfactant and ammonium persulfate as an initiator. The PMMA microspheres synthesized was quite uniform and the particle size was ca. 60.2 nm (measured by dynamic light scattering). The microstructure of pr-In2O3 powders prepared was largely dependent on the kind of In2O3 sources. The pr-In2O3 which was prepared from In(NO3)3 as an In 2O3 source (pr-In2O3(N)) consisted of submicron-sized spherical particles with welldeveloped spherical mesopores (several tens of nanometers in pore diameter) and each oxide wall among pores was constructed with meso-sized In2O3 particles connected continuously. On the other hand, the pr-In2O3 which was prepared from InCl3 as an In2O3 source (pr-In2 O3(Cl)) was composed of a large number of dispersed meso-sized particles and a few submicron-sized dense spherical particles. In contrast, the morphology of conventional In2O3 powder (c-In 2O3) prepared by ultrasonic-spray pyrolysis of PMMAfree In(NO3)3 aqueous solution as a reference was relatively dense and roughly spherical with a diameter of ca. 100-700 nm. The responses to 1.0 and 10ppm NO2 of pr-In2O3 sensors in air were much larger than those of a c-In2O3(N) sensor in the temperature range of less than 250°C and 300°C, respectively. In addition, the response and recovery speeds of both the pr-In2O 3 sensors were much faster than those of the c-In2O 3(N) sensor, because of the well-developed porous structure of the pr-In2O3 sensors.

AB - NO2-sensing properties of porous In2O3 (pr-In2O3) powders prepared by ultrasonic-spray pyrolysis employing polymethylmethacrylate (PMMA) microspheres as a template has been investigated in this study. The PMMA microspheres were synthesized in water by ultrasonic-assisted emulsion polymerization employing methyl methacrylate monomer, sodium lauryl sulfate as a surfactant and ammonium persulfate as an initiator. The PMMA microspheres synthesized was quite uniform and the particle size was ca. 60.2 nm (measured by dynamic light scattering). The microstructure of pr-In2O3 powders prepared was largely dependent on the kind of In2O3 sources. The pr-In2O3 which was prepared from In(NO3)3 as an In 2O3 source (pr-In2O3(N)) consisted of submicron-sized spherical particles with welldeveloped spherical mesopores (several tens of nanometers in pore diameter) and each oxide wall among pores was constructed with meso-sized In2O3 particles connected continuously. On the other hand, the pr-In2O3 which was prepared from InCl3 as an In2O3 source (pr-In2 O3(Cl)) was composed of a large number of dispersed meso-sized particles and a few submicron-sized dense spherical particles. In contrast, the morphology of conventional In2O3 powder (c-In 2O3) prepared by ultrasonic-spray pyrolysis of PMMAfree In(NO3)3 aqueous solution as a reference was relatively dense and roughly spherical with a diameter of ca. 100-700 nm. The responses to 1.0 and 10ppm NO2 of pr-In2O3 sensors in air were much larger than those of a c-In2O3(N) sensor in the temperature range of less than 250°C and 300°C, respectively. In addition, the response and recovery speeds of both the pr-In2O 3 sensors were much faster than those of the c-In2O 3(N) sensor, because of the well-developed porous structure of the pr-In2O3 sensors.

UR - http://www.scopus.com/inward/record.url?scp=84885473494&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84885473494&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2013.02.090

DO - 10.1016/j.snb.2013.02.090

M3 - Article

VL - 187

SP - 495

EP - 502

JO - Sensors and Actuators, B: Chemical

JF - Sensors and Actuators, B: Chemical

SN - 0925-4005

ER -