Silanol (Si-OH) — FTIR-absorptions-toppe og tildelinger
Dette er de karakteristiske FTIR-bølgetal, hvor Silanol (Si-OH) har tendens til at absorbere, samlet fra publiceret litteratur og rangeret efter understøttende bevis. Hver tildeling kan spores til en kilde (DOI) og krydsvalideres mod vores 130.000+ referencespektre og vidensgraf.
Backed by 8 cited sources
Hurtigt svar
Silanol (Si-OH) 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 Silanol (Si-OH)
| Bølgetal (cm⁻¹) | Understøttende fakta | Citerede kilder | Højeste tillid |
|---|---|---|---|
| 960 | 14 | 13 | 1,0 |
| 3740 | 12 | 10 | 1,0 |
| 3745 | 12 | 9 | 1,0 |
| 950 | 10 | 8 | 1,0 |
| 3500 | 8 | 7 | 1,0 |
| 3400 | 8 | 7 | 1,0 |
| 970 | 7 | 6 | 1,0 |
| 3450 | 6 | 5 | 1,0 |
| 3650 | 5 | 5 | 1,0 |
| 3610 | 5 | 3 | 1,0 |
| 955 | 4 | 4 | 1,0 |
| 3300 | 4 | 4 | 1,0 |
| 3747 | 4 | 3 | 1,0 |
| 800 | 3 | 3 | 1,0 |
| 900 | 3 | 3 | 1,0 |
| 460 | 3 | 3 | 1,0 |
| 3744 | 3 | 3 | 1,0 |
| 956 | 3 | 3 | 1,0 |
| 555 | 3 | 3 | 1,0 |
| 945 | 3 | 3 | 1,0 |
| 3700 | 3 | 3 | 1,0 |
| 943 | 3 | 3 | 1,0 |
| 1635 | 3 | 3 | 1,0 |
| 940 | 3 | 3 | 1,0 |
| 795 | 3 | 3 | 1,0 |
| 1100 | 3 | 2 | 1,0 |
| 3420 | 3 | 2 | 1,0 |
| 3743 | 3 | 1 | 1,0 |
| 3750 | 3 | 1 | 1,0 |
| 3550 | 2 | 2 | 1,0 |
Viser de 30 bedst understøttede toppe ud af 240 i alt for Silanol (Si-OH).
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
-
4000 cm⁻¹ tillid 1,0
“The FT-IR data was revealed the existence of peaks at 4000 400 showing the siloxane & silanol groups were present, Fluorescence Spectrophotometer, SEM and EDS.”
Banoth 等 - 2022 - Sustainable Thermochemical Extraction of Amorphous DOI: 10.21203/rs.3.rs-657645/v1 -
1050 cm⁻¹ tillid 1,0
“curve c - T In the insert, IR absorption spectra in the region of Si-OH stretching curve b - T d¼1050(cid:3)C,dopedwithdifferentamountofGd:curve1-1%m.f.Gdandcurve modefortwosamplesdensifiedatT Fraser 2 - 8% m.f.”
Baraldi 等 - 2002 - Vibrational spectroscopy of OH-defects in sol-gel DOI: 10.1080/10420150215814 -
942 cm⁻¹ tillid 1,0
“2 cm-1 were found at around 1078 ascribed to Si-O-Si (asymmetric stretching vibration) and cm-1 around 942 ascribed to silanol (Si-OH) groups (bending vibration).”
Study of Polyvinyl Alcohol-SiO2 Nanoparticles Polymeric Membrane in Wastewater Treatment Containing Zinc Ions DOI: 10.3390/polym13111875 -
1126 cm⁻¹ tillid 1,0
“The subtracted spectrum revealed an increase in the shoulder bands at 1126 and cm(cid:2)1, cm(cid:2)1, 1040 in addition to the silanol band at 900-920 while a decrease in the intensity of methoxy bands could be observed”
Structural studies of alkoxysilyl-functionalised ionic liquid and its application in a hybrid electrochromic device DOI: 10.1016/j.materresbull.2012.08.036 -
900 cm⁻¹ tillid 1,0
“The weak bands at 900 cm-1 and 949 cm-1 are possibly atattributed to the symmetric stretching vibrations Si-OH and Si-O-Si in amorphous silica.”
Biosynthesized Silica Nanosuspension as Thermal Fluid in Parabolic Solar Panels DOI: 10.3390/e23020142 -
3735 cm⁻¹ tillid 1,0
“lated silanol peak at 3735 fresh Si-BEA and Ti-BEA samples All changes discussed above relate to silanol groups and do not displayed equivalent peak areas (less than 5% difference) while the necessarily prove any change in the actual Sn sit”
Effect of water treatment on Sn-BEA zeolite: Origin of 960 cm-1 FTIR peak DOI: 10.1016/j.micromeso.2015.02.012 -
950 cm⁻¹ tillid 1,0
“dense spherical silica powders were separated and settled down shows the presence of silanol (Si-OH) vibrations at 950 after about 600 s.”
De 等 - 2000 - Hydrolysis-condensation reactions of TEOS in the p DOI: 10.1039/B003221M -
795 cm⁻¹ tillid 1,0
“The band at 447.49 is O-Si-O bending [11, 15, 16], at 794.67 cm-1 cm-1 is Si-OH stretching [11], and at 1087.85 is Si-O-Si stretching asymmetric [6, 15].”
Deswardani 等 - 2017 - Study of Structural and Magnetic Properties of Sil DOI: 10.1088/1757-899X/202/1/012047
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