Ag/Ag2O/TiO2 nanocomposites: Microwave-assisted synthesis, characterization, and photosonocatalytic activities

S. P. Prakoso; A. Taufik; Rosari Saleh

doi:10.1088/1757-899X/188/1/012029

Ag/Ag₂O/TiO₂ nanocomposites: Microwave-assisted synthesis, characterization, and photosonocatalytic activities

S. P. Prakoso, A. Taufik, Rosari Saleh

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

Nanocomposites of Ag/Ag₂O/TiO₂ were synthesized using a microwave-assisted method. As-prepared samples were systematically characterized by X-ray diffraction, electron spin resonance, and diffuse reflectance spectroscopy. The photosonocatalytic performance was investigated under both UV and visible light and ultrasonic irradiation in terms of degradation of methylene blue (MB) dye in aqueous solution. Compared with the pure TiO₂ nanoparticles and Ag/Ag₂O nanocomposites, the Ag/Ag₂O/TiO₂ nanocomposites presented more responsive photosonocatalytic activity in the wide range of light wavelengths. It is believed that defect states in TiO₂ nanoparticles, which were observed by ESR measurements, played an important role in trapping the charge carrier in the photosonocatalytic process. In addition, the degradation process was studied in terms of the influence of several experimental parameters, and a reasonable mechanism of photosonocatalysis with Ag/Ag₂O/TiO₂ nanocomposites was proposed by correlating the active radical species involved with the physical properties of the as-synthesized samples.

Original language	English
Article number	012029
Journal	IOP Conference Series: Materials Science and Engineering
Volume	188
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/188/1/012029
Publication status	Published - 2017 May 2
Externally published	Yes
Event	International Symposium on Current Progress in Functional Materials 2016, ISCPFM 2016 - Bali, Indonesia Duration: 2016 Jul 26 → 2016 Jul 27

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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title = "Ag/Ag2O/TiO2 nanocomposites: Microwave-assisted synthesis, characterization, and photosonocatalytic activities",

abstract = "Nanocomposites of Ag/Ag2O/TiO2 were synthesized using a microwave-assisted method. As-prepared samples were systematically characterized by X-ray diffraction, electron spin resonance, and diffuse reflectance spectroscopy. The photosonocatalytic performance was investigated under both UV and visible light and ultrasonic irradiation in terms of degradation of methylene blue (MB) dye in aqueous solution. Compared with the pure TiO2 nanoparticles and Ag/Ag2O nanocomposites, the Ag/Ag2O/TiO2 nanocomposites presented more responsive photosonocatalytic activity in the wide range of light wavelengths. It is believed that defect states in TiO2 nanoparticles, which were observed by ESR measurements, played an important role in trapping the charge carrier in the photosonocatalytic process. In addition, the degradation process was studied in terms of the influence of several experimental parameters, and a reasonable mechanism of photosonocatalysis with Ag/Ag2O/TiO2 nanocomposites was proposed by correlating the active radical species involved with the physical properties of the as-synthesized samples.",

author = "Prakoso, {S. P.} and A. Taufik and Rosari Saleh",

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T2 - International Symposium on Current Progress in Functional Materials 2016, ISCPFM 2016

AU - Prakoso, S. P.

AU - Taufik, A.

AU - Saleh, Rosari

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2017/5/2

Y1 - 2017/5/2

N2 - Nanocomposites of Ag/Ag2O/TiO2 were synthesized using a microwave-assisted method. As-prepared samples were systematically characterized by X-ray diffraction, electron spin resonance, and diffuse reflectance spectroscopy. The photosonocatalytic performance was investigated under both UV and visible light and ultrasonic irradiation in terms of degradation of methylene blue (MB) dye in aqueous solution. Compared with the pure TiO2 nanoparticles and Ag/Ag2O nanocomposites, the Ag/Ag2O/TiO2 nanocomposites presented more responsive photosonocatalytic activity in the wide range of light wavelengths. It is believed that defect states in TiO2 nanoparticles, which were observed by ESR measurements, played an important role in trapping the charge carrier in the photosonocatalytic process. In addition, the degradation process was studied in terms of the influence of several experimental parameters, and a reasonable mechanism of photosonocatalysis with Ag/Ag2O/TiO2 nanocomposites was proposed by correlating the active radical species involved with the physical properties of the as-synthesized samples.

AB - Nanocomposites of Ag/Ag2O/TiO2 were synthesized using a microwave-assisted method. As-prepared samples were systematically characterized by X-ray diffraction, electron spin resonance, and diffuse reflectance spectroscopy. The photosonocatalytic performance was investigated under both UV and visible light and ultrasonic irradiation in terms of degradation of methylene blue (MB) dye in aqueous solution. Compared with the pure TiO2 nanoparticles and Ag/Ag2O nanocomposites, the Ag/Ag2O/TiO2 nanocomposites presented more responsive photosonocatalytic activity in the wide range of light wavelengths. It is believed that defect states in TiO2 nanoparticles, which were observed by ESR measurements, played an important role in trapping the charge carrier in the photosonocatalytic process. In addition, the degradation process was studied in terms of the influence of several experimental parameters, and a reasonable mechanism of photosonocatalysis with Ag/Ag2O/TiO2 nanocomposites was proposed by correlating the active radical species involved with the physical properties of the as-synthesized samples.

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Ag/Ag₂O/TiO₂ nanocomposites: Microwave-assisted synthesis, characterization, and photosonocatalytic activities

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