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# Laurent Menard <lmenard@uiuc.edu 217-244-7440>
# requesting 2 days, at minimum=2 days
# beamline 33BM, EXAFS oxide passivating layers on supported platinum nanoparticles
# instrument 33BM-B XAFS
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# top:/home/www/beamtime-requests/req00750.txt
# UNICAT Member Beam Time Request  #750
# created Tue Feb 22 10:42:07 CST 2005
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apsrun:
	2004-03

beamline:
	33BM

collaboration:
	No

collaborator_Jenia:
	ON

contact:
	lmenard@uiuc.edu 217-244-7440

days:
	2

description:
	Oxide layers formed at different temperatures (298 - 673 K) on supported Pt particles will be investigated with EXAFS measurements.  The goal of the experiments are to measure the effects of passivation layers on the bond lengths of Pt atoms on the surface of the particles, which show contraction in oxygen free environments.  Measurements will be taken for a given nanoparticle/oxide layer sample over a range of temperatures to determine static and thermal contributions to the Debye-Waller factor.

equipment_required:
	variac, water inlet and outlet for cooling of sample cell, liquid nitrogen

experiment:
	EXAFS oxide passivating layers on supported platinum nanoparticles

foreign_nationals:
	Joo Kang  (User # 67195)

hazards:
	Hazards include those associated with working with resistive heating elements and cryogenic fluids, compressed gases, and flammable gases.

instrument:
	33BM-B XAFS

instrument_other:
	

minimumdays:
	2

name:
	Laurent Menard

new_request:
	ON

nonmembers:
	Anatoly Frenkel

unacceptable_dates:
	

z34ID_details:
	


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