Ionization Ability of Manganese Nanoparticles
- Conference date: 1–3 December 2010
- Location: Kuala Lumpur, (Malaysia)
Manganese oxide nanoparticles (Mn‐O NPs) were prepared through our novel method as reagents for laser desorption/ionization mass spectrometry (LDI‐MS). Through the control of the reaction time in the chemical preparation method (0.5, 1, and 5 h), we succeeded in preparing three different types of manganese oxide particles. The particles were characterized by X‐ray diffraction, Fourier transform infrared spectroscopy, and DC magnetization measurements. These characterization results indicated that the manganese ions oxidized in aqueous alkaline solution, and that the spinel structure was retained for the phase, which then gradually changed into the phase. The mass spectra of substance P were measured by MALDI‐TOF mass spectrometry with Mn‐O NPs. The Mn‐O NPs that reacted with 3‐aminopropyltriethoxysilane(γ‐APTES) for 1 h or 5 h had higher ionization abilities than those reacted for 0.5 h. These different abilities are attributed to the different crystal structures of the prepared manganese oxides.
- Mass spectrometry
- Chemical reactions
- Fourier transform infrared spectroscopy
- Hydrogen reactions
- Ionization spectroscopy
- Magnetization measurement
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