March 2025 - Ifeffit - millenia.cars.aps.anl.gov

International XAFS Conference 19 - Chicago July 14-18, 2025
by Carlo Segre 05 Mar '25

05 Mar '25

Hello IFEFFIT Mailing List, I am pleased to let you know that the website and registration pages for the XAFS19 conference to be held on the Illinois Tech Main Campus in Chicago, Illinois, July 14-18 is now available. The links to the registration for participants and exhibitors are both live and we are able to take registration. Members of the International XAFS Society can take advantage of the discount on the full participant registration fee with a promotion code that will be available shortly from the Society. The Abstract submission will open early next week and I will send an additional announcement out at that time. Please bear with us as the web site is still a work in progress. Housing information as well as more information regarding invited speakers is forthcoming. The link to the main conference web site is https://urldefense.us/v3/__https://www.icdd.com/xafs19/__;!!G_uCfscf7eWS!cy… . Please feel free to disseminate this announcement. For any questions, please email the conference at <xafsconference2025(a)gmail.com>. This email will be used for individual correspondence. If you have corrections about the web site, please feel free to email me at <segre(a)iit.edu>. Carlo Segre for the XAFS19 Local Organizing Committee -- Carlo Segre, Duchossois Professor of Physics Illinois Institute of Technology

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Water-free binder advice
by Paul Aronstein 01 Mar '25

01 Mar '25

Hello, I'm looking for some advice on binder alternatives for preparing either pellets or packed powder samples in a dry glovebox. Please also note if the binder requires preparation (i.e. desiccated prior to use, etc) or if there are other considerations. Thank you, -Paul

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Question about Ti edge
by Benito Melas 01 Mar '25

01 Mar '25

Hi all, I was following this article about Li2TiS3 https://urldefense.us/v3/__https://pubs.acs.org/doi/full/10.1021/acs.inorgc… and found this Ti edge XANES figure [image: image.png] The authors claim The peak position for LTS-213 is approximately 4970 eV, which agrees well > with that for rutile TiO2 with a valence of titanium species in the 4+ > oxidation state. Should we use the pre-edge to determine the oxidation state? Is it reliable, or should we use E₀ and compare it with references of well-known oxidation states? > In addition, TiS2, in which titanium is also in the 4+ oxidation state, > shows pre-edge peaks at 4968–4971 eV. (21) Considering the titanium > oxidation state in the raw materials, the stability of the titanium > species, and the XANES results, the oxidation state of the titanium species > in LTS-213 is likely to be 4+. The second conclusion is even more unclear. Would you help me see if I am missing something in my understanding of oxidation states using XANES? Best, B.

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