Functionalization of Si Nanowire Surfaces to Create Interactive Mechanism for Heavy Metals Detection Application
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Date
2018Author
Nuri A.KH., Ehfaed
Tijjani, Adam
Mohammed, Mohammed
Omar S., Dahham
Uda, Hashim
Nik Noriman, Zulkepli
Almahdi R., Rabia
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Silicon (Si) nanostructure was prepared using a cheap and in-house technique. The device was fabricated via dry oxide etching approach with a controlled oxygen flow rate in an oxidation furnace, a network of uniform Si nanowires were successfully fabricated. The device was functionalized by (3-aminopropyl) triethoxysilane (APTES) to serve as a sensor for heavy metal detection. The amino-functionalized Si nanowires were characterized based on variation SPX spectra of four different element that, O, OH, NH2 and Si-O-NH2. Three major peaks in the C 1s region one at 289 eV is were detected indicating for the Si-O
attaching, values of 287eV 30 for Si-OH, 285eV for NH2 and 83eV for Si-O-NH2 representing hydroxide, amine and modified silicon surface that that established nitrogen atoms (-NH2, -NH-). Thus, the study identifies different chemical environments to identify heavy metals in water.