Reduced graphene oxide/polymethyl methacrylate (rGO/PMMA) nanocomposite for real time gamma radiation detection 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Nuclear Instruments and Methods in Physics Research, Section A. Accelerators, Spectrometers, Detectors and Associated Equipment
年/卷/期
2019 / 940 /
页码
72-77
ISSN号
0168-9002
作者单位
Nucl Sci & Technol Res Inst, Radiat Applicat Res Sch, Moazzen Blvd,POB 31485-498, Karaj, Iran;Shiraz Univ Med Sci, INIRPRC, Shiraz, Iran;Shiraz Univ Med Sci, INIRPRC, Shiraz, Iran;Shiraz Univ Med Sci, INIRPRC, Shiraz, Iran;Nucl Sci & Technol Res Inst, Radiat Applicat Res Sch, Moazzen Blvd,POB 31485-498, Karaj, Iran;
作者
Feizi, Shahzad;Mehdizadeh, Alireza;Hosseini, Mohammad Amin;Jafari, Seyed Amin;Ashtari, Parviz;
摘要
Novel 3 dimensional radiation sensors using reduced graphene oxide (rGO) nanoflakes in polymethyl methacrylate matrix as sensing material were synthesized and fabricated to measure the dose rate of gamma radiation. A detailed characterization of the prepared reduced graphene oxide using X-ray diffraction (XRD), thermal gravimetric analysis (TGA), atomic force microscopy (AFM), Field Emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR) and High-resolution transmission electron microscopy (HRTEM) is presented. Reduced graphene oxide-polymethyl methacrylate composite was prepared using methylene chloride solvent-assisted dispersion of nano flakes of reduced graphene oxide in the polymer matrix. The gamma sensor mainly consists of polymethyl methacrylate/reduced graphene oxide (rGO/PMMA) nanocomposite as the sensing material and two silver coated glass electrodes to make a conductive cell. Real time dose rate information of the nanocomposite such as linearity response to dose rate and sensitivity are investigated. rGO/PMMA based gamma sensors show better performance at a standard bias voltage with respect to graphene oxide (GO) dosimeters. The response to dose rate is linear in the range of 50-130 mGy/min and the sensor array can be introduced for gamma radiation application dosimetry in diagnostic activities.
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关键词/主题词
Reduced graphene oxide;Polymethyl methacrylate;Dosimetry;Radiation detection;
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