Light-stimulated composition conversion in TiO2-based nanofibers

Ming Jin; Xintong Zhang; Shunsuke Nishimoto; Zhaoyue Liu; Donald A. Tryk; Alexei V. Emeline; Taketoshi Murakami; Akira Fujishima

doi:10.1021/jp065590n

Light-stimulated composition conversion in TiO₂-based nanofibers

Ming Jin, Xintong Zhang, Shunsuke Nishimoto, Zhaoyue Liu, Donald A. Tryk, Alexei V. Emeline, Taketoshi Murakami, Akira Fujishima

Research output: Contribution to journal › Article › peer-review

105 Citations (Scopus)

Abstract

Silver-TiO₂ nanofibers (Ag/Ti = 1/50) were fabricated by the electrospinning method, followed by heat treatment at 200°C and calcination at 550°C. The electrospinning solution was comprised of AgNO₃ and titanium tetraisopropoxide (TTIP) with polyvinylpyrrolidone (PVP). Alternating irradiation of the silver-TiO₂ nanofibers with ultraviolet and visible light can interconvert the silver species on the TiO₂-based nanofibers to yield Ag metal and Ag₂O, respectively, and this process has been characterized by UV-visible spectra, TEM, XRD, and XPS. The interconversion process can be rationalized in terms of the photoreduction of Ag₂O by TiO₂ and the oxidization of Ag by visible light. Acetaldehyde photodecomposition measurements indicate that Ag₂O has better mineralization ability than Ag⁰ in this kind of silver-TiO₂ nanofiber photocatalytic system. The photoinduced conversion of composition on TiO₂-based nanofibers may find applications in photocatalysis, antibacterial technology, and other areas.

Original language	English
Pages (from-to)	658-665
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	2
DOIs	https://doi.org/10.1021/jp065590n
Publication status	Published - Jan 18 2007
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Light-stimulated composition conversion in TiO2-based nanofibers",

abstract = "Silver-TiO2 nanofibers (Ag/Ti = 1/50) were fabricated by the electrospinning method, followed by heat treatment at 200°C and calcination at 550°C. The electrospinning solution was comprised of AgNO3 and titanium tetraisopropoxide (TTIP) with polyvinylpyrrolidone (PVP). Alternating irradiation of the silver-TiO2 nanofibers with ultraviolet and visible light can interconvert the silver species on the TiO2-based nanofibers to yield Ag metal and Ag2O, respectively, and this process has been characterized by UV-visible spectra, TEM, XRD, and XPS. The interconversion process can be rationalized in terms of the photoreduction of Ag2O by TiO2 and the oxidization of Ag by visible light. Acetaldehyde photodecomposition measurements indicate that Ag2O has better mineralization ability than Ag0 in this kind of silver-TiO2 nanofiber photocatalytic system. The photoinduced conversion of composition on TiO2-based nanofibers may find applications in photocatalysis, antibacterial technology, and other areas.",

author = "Ming Jin and Xintong Zhang and Shunsuke Nishimoto and Zhaoyue Liu and Tryk, {Donald A.} and Emeline, {Alexei V.} and Taketoshi Murakami and Akira Fujishima",

year = "2007",

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doi = "10.1021/jp065590n",

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T1 - Light-stimulated composition conversion in TiO2-based nanofibers

AU - Jin, Ming

AU - Zhang, Xintong

AU - Nishimoto, Shunsuke

AU - Liu, Zhaoyue

AU - Tryk, Donald A.

AU - Emeline, Alexei V.

AU - Murakami, Taketoshi

AU - Fujishima, Akira

PY - 2007/1/18

Y1 - 2007/1/18

N2 - Silver-TiO2 nanofibers (Ag/Ti = 1/50) were fabricated by the electrospinning method, followed by heat treatment at 200°C and calcination at 550°C. The electrospinning solution was comprised of AgNO3 and titanium tetraisopropoxide (TTIP) with polyvinylpyrrolidone (PVP). Alternating irradiation of the silver-TiO2 nanofibers with ultraviolet and visible light can interconvert the silver species on the TiO2-based nanofibers to yield Ag metal and Ag2O, respectively, and this process has been characterized by UV-visible spectra, TEM, XRD, and XPS. The interconversion process can be rationalized in terms of the photoreduction of Ag2O by TiO2 and the oxidization of Ag by visible light. Acetaldehyde photodecomposition measurements indicate that Ag2O has better mineralization ability than Ag0 in this kind of silver-TiO2 nanofiber photocatalytic system. The photoinduced conversion of composition on TiO2-based nanofibers may find applications in photocatalysis, antibacterial technology, and other areas.

AB - Silver-TiO2 nanofibers (Ag/Ti = 1/50) were fabricated by the electrospinning method, followed by heat treatment at 200°C and calcination at 550°C. The electrospinning solution was comprised of AgNO3 and titanium tetraisopropoxide (TTIP) with polyvinylpyrrolidone (PVP). Alternating irradiation of the silver-TiO2 nanofibers with ultraviolet and visible light can interconvert the silver species on the TiO2-based nanofibers to yield Ag metal and Ag2O, respectively, and this process has been characterized by UV-visible spectra, TEM, XRD, and XPS. The interconversion process can be rationalized in terms of the photoreduction of Ag2O by TiO2 and the oxidization of Ag by visible light. Acetaldehyde photodecomposition measurements indicate that Ag2O has better mineralization ability than Ag0 in this kind of silver-TiO2 nanofiber photocatalytic system. The photoinduced conversion of composition on TiO2-based nanofibers may find applications in photocatalysis, antibacterial technology, and other areas.

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Light-stimulated composition conversion in TiO₂-based nanofibers

Abstract

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