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DTSTART:20070311T020000
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UID:c0916549-2678-4e67-aa1b-a8724072e210.233039@calendar.missouristate.edu
CREATED:20231115T143709Z
LAST-MODIFIED:20231115T143709Z
LOCATION:Meyer Library\, Duane G. 101
SUMMARY:Chemistry &amp; Biochemistry Seminar: "Single-molecule (photo)catalyti
 c dynamics in nanomaterials"
DESCRIPTION:By: Dr. Bin Dong\, University of Arkansas\n\n\nAbstract\n\n\nT
 he insightful comprehension of in situ catalytic dynamics at individual s
 tructural defects of two-dimensional (2D) layered material\, which is cru
 cial for the design of high-performance catalysts via defect engineering\
 , is still missing. Here\, we resolved single-molecule trajectories resul
 ted from photocatalytic activities at individual structural features (i.e
 .\, basal plane\, edge\, wrinkle\, and vacancy) in 2D layered indium sele
 nide (InSe) in situ to quantitatively reveal heterogeneous photocatalytic
  dynamics and surface diffusion behaviors. The highest catalytic activity
  was found at vacancy in a four-layer InSe\, up to ~30× higher than that 
 on the basal plane. Moreover\, lower adsorption strength of reactant and 
 slower dissociation/diffusion rates of product were found at more photoca
 talytic active defects. These distinct dynamic properties are determined 
 by lattice structures/electronic energy levels of defects and layer thick
 ness of supported InSe. Our findings shed light on the fundamental unders
 tanding of photocatalysis at defects and guide rational defect engineerin
 g.
X-ALT-DESC;FMTTYPE=text/html:&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;p&gt;By
 : Dr. Bin Dong\, University of Arkansas&lt;/p&gt;\n&lt;p&gt;Abstract&lt;/p&gt;\n&lt;p&gt;The insi
 ghtful comprehension of in situ catalytic dynamics at individual structur
 al defects of two-dimensional (2D) layered material\, which is crucial fo
 r the design of high-performance catalysts via defect engineering\, is st
 ill missing. Here\, we resolved single-molecule trajectories resulted fro
 m photocatalytic activities at individual structural features (i.e.\, bas
 al plane\, edge\, wrinkle\, and vacancy) in 2D layered indium selenide (I
 nSe) in situ to quantitatively reveal heterogeneous photocatalytic dynami
 cs and surface diffusion behaviors. The highest catalytic activity was fo
 und at vacancy in a four-layer InSe\, up to ~30× higher than that on the 
 basal plane. Moreover\, lower adsorption strength of reactant and slower 
 dissociation/diffusion rates of product were found at more photocatalytic
  active defects. These distinct dynamic properties are determined by latt
 ice structures/electronic energy levels of defects and layer thickness of
  supported InSe. Our findings shed light on the fundamental understanding
  of photocatalysis at defects and guide rational defect engineering.&lt;/p&gt;&lt;
 /body&gt;&lt;/html&gt;
DTSTART;TZID=America/Chicago:20231129T153500
DTEND;TZID=America/Chicago:20231129T162500
SEQUENCE:0
URL:https://chemistry.missouristate.edu/Seminars.htm
CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff
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