TY - JOUR
T1 - Amorphous porous Fe-BTC prepared via the post-synthetic metal-ion metathesis of HKUST-1
AU - Byun, Asong
AU - Moon, Dohyun
AU - Lee, Byeongchan
AU - Park, Jinhee
N1 - Publisher Copyright:
© 2023 The Royal Society of Chemistry.
PY - 2023/10/27
Y1 - 2023/10/27
N2 - “Defect engineering”, in which defects are intentionally introduced into metal-organic frameworks (MOFs) with the aim of functionalizing pores and modifying their size distributions, has recently attracted considerable interest. Unfortunately, the surface area of a MOF is inversely proportional to the number of defects, which is the main drawback associated with defect generation; consequently, amorphous MOFs are not very porous. Herein, we prepared Fe-BTC (BTC = 1,3,5-benzenetricarboxylic acid), a defect-rich, amorphous, but porous material, via the post-synthetic metal-ion metathesis (PSMM) of CuZn-HKUST-1 with Fe2+/Fe3+. Zn2+ is relatively weakly bound to BTC3− and is easily replaced by Fe2+/Fe3+, whereas Cu2+ forms stable bonds that maintain the overall MOF structure during the PSMM. Subsequent oxidation of all Fe states to Fe3+ creates significant defects and disorder at metal nodes. While the resulting amorphous Fe-BTC is of similar porosity to Cu-HKUST-1, defects at its metal sites accelerate reactions involving Lewis acid catalysis.
AB - “Defect engineering”, in which defects are intentionally introduced into metal-organic frameworks (MOFs) with the aim of functionalizing pores and modifying their size distributions, has recently attracted considerable interest. Unfortunately, the surface area of a MOF is inversely proportional to the number of defects, which is the main drawback associated with defect generation; consequently, amorphous MOFs are not very porous. Herein, we prepared Fe-BTC (BTC = 1,3,5-benzenetricarboxylic acid), a defect-rich, amorphous, but porous material, via the post-synthetic metal-ion metathesis (PSMM) of CuZn-HKUST-1 with Fe2+/Fe3+. Zn2+ is relatively weakly bound to BTC3− and is easily replaced by Fe2+/Fe3+, whereas Cu2+ forms stable bonds that maintain the overall MOF structure during the PSMM. Subsequent oxidation of all Fe states to Fe3+ creates significant defects and disorder at metal nodes. While the resulting amorphous Fe-BTC is of similar porosity to Cu-HKUST-1, defects at its metal sites accelerate reactions involving Lewis acid catalysis.
UR - http://www.scopus.com/inward/record.url?scp=85176769781&partnerID=8YFLogxK
U2 - 10.1039/d3ta05626k
DO - 10.1039/d3ta05626k
M3 - Article
AN - SCOPUS:85176769781
SN - 2050-7488
VL - 11
SP - 24591
EP - 24597
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
IS - 45
ER -