Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Ilkka Kartio"'
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 161:447-460
The initial steps of the oxidation of galena (PbS) surface with special attention to the oxidation in an aqueous environment were investigated by the X-ray photoelectron spectroscopy method (XPS). Galena monocrystals from two different sources were c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::944a7697ec3acca5e6244ff9ec1f8307
https://doi.org/10.1016/s0927-7757(99)00214-9
https://doi.org/10.1016/s0927-7757(99)00214-9
Autor:
K. Laajalehto, and Mia Lindström, Jouko Kankare, Minna Meretoja, Ilkka Kartio, Jukka Lukkari, Markku Rajamäki
Publikováno v:
Langmuir. 15:3529-3537
In this paper, we demonstrate that organic thiosulfates (Bunte salts) with the general formula R−SSO3M, where R is either an aliphatic or aromatic group and M a monovalent cation, constitute a novel class of surface-active compounds with a sulfur-c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2c2a22ffad6aec9dea6c2c4b76a5520
https://doi.org/10.1021/la9811719
https://doi.org/10.1021/la9811719
Publikováno v:
Laajalehto, K, Leppinen, J, Kartio, I & Laiho, T 1999, ' XPS and FTIR study of the influence of electrode potential on activation of pyrite by copper and lead ', Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 154, no. 1-2, pp. 193-199 . https://doi.org/10.1016/S0927-7757(98)00897-8
Activation of pyrite by either copper or lead ions and subsequent xanthate adsorption on activated surfaces were studied in aqueous solutions of pH 5, 6.5 and 9 under different electrochemical conditions using X-ray Photoelectron spectroscopy (XPS) a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e2b6c01186367c9afa168a16949d0635
https://cris.vtt.fi/en/publications/3a054f3f-0754-4e2e-aae8-5477bf3d2aa4
https://cris.vtt.fi/en/publications/3a054f3f-0754-4e2e-aae8-5477bf3d2aa4
Autor:
Andrea G Schaufuß, K. Laajalehto, G. Michael Bancroft, Ilkka Kartio, H. Wayne Nesbitt, Rüdiger Szargan
Publikováno v:
Journal of Electron Spectroscopy and Related Phenomena. 96:69-82
Synchrotron excited and conventional X-ray photoelectron spectroscopy has been used to study the initial oxidation of fractured pyrite surfaces in air. The dramatically enhanced surface sensitivity obtained with synchrotron radiation allowed us to fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8435220bc952722376e4e6a2d461109
https://doi.org/10.1016/s0368-2048(98)00237-0
https://doi.org/10.1016/s0368-2048(98)00237-0
Publikováno v:
Surface Science. :L918-L923
In situ cleaved PbS(100) surfaces were studied by means of X-ray photoelectron spectroscopy (XPS) using synchrotron radiation. A significant narrowing of the S 2p, Pb 5d and Pb 4f lines was found at low temperatures, indicating strong dependence of p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9db5c964bf81799f61a41cd2fe866e4
https://doi.org/10.1016/s0039-6028(98)00479-8
https://doi.org/10.1016/s0039-6028(98)00479-8
Autor:
Ilkka Kartio, Andrea G Schaufuß, K. Laajalehto, Rüdiger Szargan, G. Michael Bancroft, H. Wayne Nesbitt
Publikováno v:
Surface Science. 411:321-328
Synchrotron-radiation-excited photoelectron spectroscopy was used to monitor sulfur chemical states on fractured pyrite surfaces reacted with atmospheric gases. The results demonstrate that there are at least three distinct states at the pyrite surfa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff4770c0d6deb9073b9d0798b9fc8445
https://doi.org/10.1016/s0039-6028(98)00355-0
https://doi.org/10.1016/s0039-6028(98)00355-0
Autor:
R. Szargan, K. Laajalehto, Ilkka Kartio, D. Hirsch, E. Suoninen, Gunther Wittstock, J. Simola, T. Laiho
Publikováno v:
International Journal of Mineral Processing. 51:293-301
Galena (PbS) oxidation on potentiostatically treated specimens in acetate buffer was investigated by atomic force microscopy (AFM) and by X-ray photoelectron spectroscopy (XPS). Elemental sulphur was detected as an oxidation product by XPS. To minimi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6ac3141fe2b64f6d8bcdcd645c66035
https://doi.org/10.1016/s0301-7516(97)00028-8
https://doi.org/10.1016/s0301-7516(97)00028-8
Publikováno v:
Langmuir. 12:5709-5721
Galena oxidation was investigated by AFM in acetate buffer under potentiostatic control and by photoelectron spectroscopy on potentiostatically pretreated specimens. At +236 mV (SHE) formation of sulfur protrusions could be observed with AFM. XPS sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94bd33bed7c3b95725b5e69575be158e
https://doi.org/10.1021/la960385s
https://doi.org/10.1021/la960385s
Publikováno v:
Japanese Journal of Applied Physics. 38:265
A special sample precooling technique has been utilised to preserve thin layers of volatile chemical species on the sample surface in ultra high vacuum conditions for investigation with conventional and synchrotron excited photoelectron spectroscopy.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f8f15c8e6d39f3d1acc2c89884e16a45
https://doi.org/10.7567/jjaps.38s1.265
https://doi.org/10.7567/jjaps.38s1.265