Laser-induced clustering dynamics of [(SiO2)nX]− from porous silica powders

Autor:	Shi-Xiong Qian, Can Xu, Li Zhao, Zichen Wang, Yufen Li, Liwei Wang
Rok vydání:	1997
Předmět:	Materials science Analytical chemistry General Physics and Astronomy Mass spectrometry Laser Ion law.invention Amorphous solid Silanol chemistry.chemical_compound chemistry law Specific surface area Mass spectrum Irradiation Physical and Theoretical Chemistry
Zdroj:	Chemical Physics Letters. 281:426-430
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(97)01264-5
Popis:	The clustering dynamics of SiO 2 -containing negative ion clusters generated from ultrafine amorphous SiO 2 powders with high specific surface area is investigated by XeCl excimer laser ablation time-of-flight mass spectrometry (TOF-MS). From the evolution of the mass spectra with the delay time and the number of laser irradiation shots, the key roles played by OH and OH − fragments from the surface silanol groups in the formation of SiO 2 -containing negative ion clusters are discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de8a53207b142f42ddfbe1252a48198c https://doi.org/10.1016/s0009-2614(97)01264-5 Zobrazit plný text záznamu Full Text from ScienceDirect