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SUMMARY:Synthesis and Design of Catalytically Active Cu-MOF Nanosheets
LOCATION:
TZID:America/Denver
DTSTART:20210423T160000
UID:2026-04-17-06-52-12@natsci.colostate.edu
DTSTAMP:20260417T065212
Description:Research Seminar:\n\nMetal-organic framework (MOF) nanosheets a
 re promising materials for applications in heterogeneous catalysis as a gr
 eater proportion of their active metal sites are positioned on the exterio
 r surface of the MOF relative to other particle morphologies.  Due to the
 se limitations caused by substrate diffusion into MOF pores\, my research 
 efforts are focused towards developing strategies to synthesize MOF nanosh
 eets.  With a greater number of metal sites on the exterior surface of th
 e particle\, they will be more easily accessible to substrates with limite
 d or no diffusion into the pores of the MOF.  While most Cu-based MOFs ar
 e commonly known to be unstable in aqueous solutions\, H3[(Cu4Cl)3(BTTri)8
  or CuBTTri (where H3BTTri = 1\,3\,5-tris(1H1\,2\,3\,-triazol-5-yl)benzen
 e) is an established Cu-based MOF with octahedral particle geometry\, that
  is capable of catalyzing chemical reactions that is known to be stable in
  water.  Using a three-layer bottom-up method and a solvothermal method\,
  a new MOF\, CuBDTri (where H2BDTri = 1\,4-di(1H-1\,2\,3-triazol-5-yl)ben
 zene) was produced.  Substituting the H3BTTri linker for H2BDTri helps pr
 omote anisotropic growth of the CuBDTri MOF particles with nanosheet morph
 ologies. Our group has recently reported that only 1.3±0.4% of the total 
 Cu in CuBTTri are active for the catalytic generation of nitric oxide (NO)
  in water because the catalysis is completely confined to the exterior sur
 face metal sites of the CuBTTri particles.  Preliminary catalytic studies
  have already shown that the CuBDTri MOF nanosheets exhibit greater cataly
 tic activity on a per-total-Cu-atom basis that CuBTTri octahedra\, indicat
 ing that a greater proportion of the Cu sites in CuBDTri nanosheets are ca
 talytically active.  This suggests that the CuBDTri MOF nanosheets we des
 igned and synthesized are more efficient than CuBTTri\, while still retain
 ing its water stability.  Currently\, our work has shown that the CuBDTri
  MOFs that we have designed and synthesized are crystalline\, porous\, wat
 er-stable\, and catalytically active in H2O.\n\nUltimately\, the goal of t
 his research is to improve copper catalysis using MOFs in water-stable env
 ironments to increase their efficiency when used in medical devices.  Fut
 ure studies will focus on determining the structure and fully investigatin
 g the catalytic activity of the CuBDTri MOF nanosheets.  As this is a com
 pletely novel material\, to determine structure\, high resolution pXRD and
  electron diffraction will be used\, and the data obtained will be used to
  guide the next steps.  To investigate the catalytic activity of the CuBD
 Tri MOF nanosheets\, some experiments will include catalyst poisoning and 
 kinetic studies to identify and quantify the active\, exterior surface of 
 the CuBDTri nanosheets.  With this data\, we will be able to properly com
 pare the catalytic efficiency of the CuBDTri MOF nanosheets more thoroughl
 y to CuBTTri MOF.\n\nJoin Zoom Meeting\n\nMeeting ID:  938 2067 0166 4:00
  pm
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