{"id":188,"date":"2023-06-06T14:32:46","date_gmt":"2023-06-06T05:32:46","guid":{"rendered":"https:\/\/www.cat.hokudai.ac.jp\/takakusagi\/?page_id=188"},"modified":"2025-07-27T18:00:23","modified_gmt":"2025-07-27T09:00:23","slug":"facility","status":"publish","type":"page","link":"https:\/\/www.cat.hokudai.ac.jp\/takakusagi\/en\/facility\/","title":{"rendered":"Facility"},"content":{"rendered":"

Ultra-high vacuum (UHV) STM<\/h2>\n
\n
<\/div>\n
\n

STM can image individual atoms\/molecules on a solid surface. We measure size and shape of metal nanoparticles deposited on an oxide single-crystal surface and observe adsorption, diffusion, and reaction processes of reactant gases on the model catalyst surface.<\/p>\n<\/div>\n<\/div>\n

Operando<\/em> PTRF-XAFS<\/h2>\n
\n
<\/div>\n
\n

Operando<\/em> polarization-dependent total reflection fluorescence (PTRF)-XAFS technique is our original measurement method and can determine a three-dimensional structure of active metal sites on an oxide single-crystal surface while monitoring the progress of the catalytic reaction.<\/p>\n<\/div>\n<\/div>\n

UHV multi-modal surface analysis chamber<\/h2>\n
\n
<\/div>\n
\n

X-ray photoelectron spectroscopy (XPS), temperature-programmed desorption (TPD), low energy electron diffraction (LEED), and high-pressure reactor are available in this UHV chamber. We can evaluate structure, electronic state, and catalytic reactivity of a model catalyst surface.<\/p>\n<\/div>\n<\/div>\n

PM-IRRAS\u00a0<\/h2>\n
\n
<\/div>\n
\n

By producing polarization-modulated infrared light at high speed through a photoelastic modulator and applying a reflection-mode measurement, IR spectrum only from surface adsorbed species on a model catalyst surface can be obtained in the presence of reactant gases.<\/p>\n<\/div>\n<\/div>\n

AFM\/STM<\/h2>\n
\n
<\/div>\n
\n

AFM and STM measurements in air or under electrochemical conditions. They provide information on surface morphology at the nanoscale. We observe atomically flat oxide and metal single-crystal surfaces.<\/p>\n<\/div>\n<\/div>\n

Potentiostat \/ Galvanostat<\/h2>\n
\n
<\/div>\n
\n

Electrochemical measurements such as cyclic voltammetry (CV). Used to confirm the flatness of single-crystal substrate surfaces and to evaluate electrocatalytic activity.<\/p>\n<\/div>\n<\/div>\n

Glove box<\/h2>\n
\n
<\/div>\n
\n

Used for sample preparation and electrochemical measurements under inert atmosphere.<\/p>\n<\/div>\n<\/div>\n

in situ<\/em> XAFS cell for plasma catalysis<\/h2>\n
\n
<\/div>\n
\n

This quartz cell is designed for in situ<\/em> XAFS measurements of powder catalysts during plasma-assisted catalytic reactions.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Facility<\/h2>\n