کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11029577 | 1646486 | 2018 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic properties of composite iron (II, III) oxide (Fe3O4) carbonaceous absorber materials by electron spectroscopy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electronic properties of composite Fe3O4 carbonaceous absorber materials were obtained by using X-ray photoelectron spectroscopy (XPS), reflection electron energy loss spectroscopy (REELS), and Fourier transforms infrared spectroscopy (FTIR). The bandgap of composite was increasing slightly from 2.5âeV for 10% activated carbon (AC) to 2.9âeV for 25% AC. The increase in the band-gap of the composite confirms; the bonding formation by the charge transfer complex between surface hydroxyl groups of Fe3O4 and carbonaceous in the form of AC particle. From the REELS, XPS, and FTIR shows effective orbital hybridization between the 2p(O), Ï(C) orbitals of amorphous carbon and 3d (Fe) orbital of Fe3O4 could lead to strong bonding formation of O-C-Fe1-x-O. For all composites shows reflection loss (R) values less than -10âdB can be designed to attenuate EM wave, thus the composites in this study are very promising for new types of EM wave absorptive materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 229, December 2018, Pages 47-51
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 229, December 2018, Pages 47-51
نویسندگان
Dahlang Tahir, Sultan Ilyas, Bualkar Abdullah, Bidayatul Armynah, Hee Jae Kang,