Silicon (Si) — FTIR-absorptions-toppe og tildelinger

Hurtigt svar

Silicon (Si) tildeles normalt ved at lede efter en tilbagevendende klynge af karakteristiske toppe frem for et præcist lærebogsnummer. Tabellen nedenfor viser, hvor litteraturen oftest placerer denne gruppe i FTIR, rangeret efter akkumuleret evidens.

Karakteristiske FTIR-toppe for Silicon (Si)

Viser de 30 bedst understøttede toppe ud af 715 i alt for Silicon (Si).

Mulige materialer

Spektrumlogik

En funktionel gruppetildeling bliver mere sikker, når flere forventede bånd optræder sammen. Brug denne side til at finde de bedst understøttede peaks, og bekræft derefter, at den samme prøve udviser et sammenhængende mønster snarere end et enkelt isoleret hit.

Anvendelse i virkeligheden

Disse sider er nyttige til analyse af ukendte materialer, topforklaring i rapporter, polymerfejlfinding og verifikation af, om en kandidatmaterialefamilie er kemisk plausibel.

Almindelige fejl

• Brug af én funktionel-gruppe-side som en komplet materialebedømmelse uden at kontrollere resten af spektret.
• Antager, at det stærkeste bånd altid er det mest diagnostiske.
• At glemme, at forarbejdning, tilsætningsstoffer, ældning og blandinger kan flytte eller udvide forventede toppe.

Verifikationsrådgivning

Brug DSC, GC-MS eller TGA, når flere materialefamilier deler lignende bånd, eller når blandings-effekter gør FTIR-tildelingen usikker.

Litteratur bag disse tildelinger

• 3429 cm⁻¹ tillid 1,0

  “The FTIR spectra of the cm-1 montmorillonite-carbon nanotube nano filler display bands at 3429, 1076, and 798 which correspond to OH functional groups, Si-O-Si stretching, and Si-O-Si vibration, respectively.”

  Synthesis and Physical Properties Characterization of Montmorillonite-modified Carbon Nanotubes Filler DOI: 10.1088/1757-899X/546/4/042004
• 1089 cm⁻¹ tillid 1,0

  “FTIR spectra showed peaks at 1089 and cm-1, 801 which corresponded to asymmetric and symmetric O-Si-O.”

  Fabrication of Biogenic Silica Nanostructures from Sorghum bicolor Leaves for Food Industry Applications DOI: 10.1007/s12633-020-00379-4
• 3604 cm⁻¹ tillid 1,0

  “3741cm-1 sorption peaks at 3604 and observed on both treatment of H-BEA is as follows: H-BEA powder was imH-BEA and Ca/H-BEA have been assigned to Si (OH) Al mersed in an aqueous solution of an alkaline earth metal nibridge structure and lo”

  Phenol oxidation over alkaline earth metal ion exchange beta zeolite in the presence of ketone DOI: 10.1016/j.molcata.2004.08.020
• 1106 cm⁻¹ tillid 1,0

  “cm(cid:2)1, 1040¨1180 Acknowledgments It shows a weak peak at 1106 which is attributed to the stretching vibration of Si-O.”

  Structural characterization of β-SiC nanowires synthesized by direct heating method DOI: 10.1016/j.msec.2005.09.083
• 1000 cm⁻¹ tillid 1,0

  “In the spectrum peaks are observed cm-1 cm-1 in the region of 1258.88 corresponding to methyl, between 1000 - 1100 a peak cm-1 corresponding to the Si-O-Si bond and a band at 792.10 characteristic of the siloxanes, confirming the presence o”

  Fabrication of a silver particle-integrated silicone polymer-covered metal stent against sludge and biofilm formation and stent-induced tissue inflammation DOI: 10.1038/srep35446
• 1009 cm⁻¹ tillid 1,0

  “3.3 Topographical analysis Si-O-Si modes.20 breathing The spectra display asymmetric cm(cid:1)1, stretching at 1009 which corresponds to the presence of The topographical investigation of pristine the PC, PC/FAC and PC/GFACwerestudiedbyAFM.”

  Thin film encapsulation of nano composites of polycarbonate (PC) for thermal management systems DOI: 10.1039/c4ra10183a
• 470 cm⁻¹ tillid 1,0

  “cm-1 The absorption bands centered at around 470, 820, 1170, 2180, and 3300 can be assigned to the Si-N symmetric stretching, Si-N asymmetric stretching, N-H bending, Si-H stretching, and NH stretching modes, respectively.”

  Evolution of Optical and Structural Properties of Silicon Nanocrystals Embedded in Silicon Nitride Films with Annealing Temperature DOI: 10.4028/www.scientific.net/JNanoR.49.163
• 721 cm⁻¹ tillid 1,0

  “381.74 Si-Ob-Si bending vibration 720.8 128.70 725.9 110.96 766.2”

  Theoretical and experimental study of structures and properties of cement paste: The nanostructural aspects of C–S–H DOI: 10.1016/j.jpcs.2011.05.001