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Published byJuliana Jenkins Modified over 8 years ago
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Scanning tunneling microscopy (STM) Atomic force microscopy (AFM) Scanning electrochemical microscopy (SECM) UV & visible spectroscopy Transmission experiments Specular reflectance & ellipsometry Internal reflection spectroelectrochemistry Second harmonic spectroscopy Vibrational spectroscopy: IR spectroscopy, Raman spectroscopy Electron & ion spectroscopy XPS, AES, LEED, HREELS, mass spectroscopy Magnetic resonance methods: ESR, NMR Quartz crystal microbalance X-ray methods: XAS, XRD A Scanning probe techniques. Spectroelectrochemistry (ch. 16/17)
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Microscopy: optical → scanning electron or force → STM, AFM in situ vs. ex situ techniques Scanning tunneling microsocpy (STM) Scanning probe techniques (ch. 16)
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Au(111) at 0.7 V vs. NHE in HCl
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Electrochemical STM
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STM images of HOPG STM images of Pt(111) with I-adlattice in HClO 4
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STM images of Cu(111): effect of etching
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Scanning tunneling spectroscopy (STS)
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Atomic force microscopy (AFM)
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Cantilever displacement vs. z-deflection for (left) attractive interaction and (right) repulsive interaction
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AFM of Cu underpotential deposition (UPD) on Au(111) Electrochemical AFM
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Scanning electrochemical microscopy (SECM)
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Principles of SECM
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SECM appoach curves for steady-state currents
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Imaging surface topography & reactivity Ta oxide formation on Ta
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Commercialized SECM
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SECM applications Ag line formation Electrochemical Cu etching
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Spectroelectrochemistry (Ch. 17) UV & visible spectroscopy 1. Transmission experiments
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Cell for transmission spectroelectrochemistry
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Responses for transmission spectroelectrochemistry
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Spectra of cobalt complex at different potentials
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Detector Power meter Potentiostat Electrochemical cell or EC devices He-Ne laser (633nm) In-situ transmittance test
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2. Specular reflectance and ellipsometry
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Elliptic polarization arising from a phase shift between parallel & perpendicular components
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Specular reflection spectroscopy
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Electroreflectance spectra of Ag in NaClO 4
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Reflectance changes caused by halide adsorption on Au
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Ellipsometer Ellipsometry
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Ellipsometric results for anodization of Al in tartaric acid
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Growth of passive film on Fe at 0.8 V vs. SCE
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Growth of polyaniline film: experiemental (dotted) vs. fiited resluts (solid)
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3. Internal reflection spectroelectrochemistry
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Transient absorbance
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Surface plasmon resonance (SPR)
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SPR curves for Au and monolayers
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4. Photoacoustic and Photothermal Spectroscopy
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5. Second harmonic spectroscopy Second harmonic generation (SHG)
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SHG response
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