Вплив наночастинок срібла, інкорпорованих у кремнеземну матрицю, на іонний вихід у мас-спектрометрії з лазерною десорбцією/іонізацією
The efficiency of UV laser desorption/ionization from the surface of mesoporous silica films containing Ag nanoparticles of various sizes has been examined using methylene blue as a probe molecule. It has been shown that a rise in both AgNPs concentration and their size to 5–12 nm intensifies the na...
Збережено в:
| Дата: | 2013 |
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| Автори: | , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2013
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| Онлайн доступ: | https://www.cpts.com.ua/index.php/cpts/article/view/232 |
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| Назва журналу: | Chemistry, Physics and Technology of Surface |
Репозитарії
Chemistry, Physics and Technology of Surface| Резюме: | The efficiency of UV laser desorption/ionization from the surface of mesoporous silica films containing Ag nanoparticles of various sizes has been examined using methylene blue as a probe molecule. It has been shown that a rise in both AgNPs concentration and their size to 5–12 nm intensifies the nanoparticles stimulating effect on methylene blue desorption/ionization. The increase in Ag concentration in the silica host matrix from 3 to 10% raises fivefold the methylene blue cation peak intensity. The ion yield increase observed is discussed based on the phenomenon of local heating and local surface plasmon resonance under UV laser irradiation. |
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