TY - JOUR
T1 - Ultrafine copper oxide nanoparticles immobilized on poly (4-vinylpyridine)-grafted UiO-66-NH2 as heterogeneous catalyst for oxidative homocoupling of terminal alkynes
AU - Ding, Rui
AU - Xia, Hengtong
AU - Wu, Yan
AU - Li, Yunhan
AU - Yang, Wenzhong
AU - Xu, Hui
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2024/11/20
Y1 - 2024/11/20
N2 - Terminal alkyne homocoupling is an effective route to synthesize 1,3-diynes, which are crucial components of many fine chemicals and natural products. However, the reaction often faces challenges of catalyst recovery and typically necessitates the introduction of basic additives, which limits its practical applicability. Here, we have developed a green and efficient Cu2O@UiO-66-g-P4VP nanocatalyst that exhibits outstanding activity for homocoupling terminal alkynes under mild, base- or ligand-free conditions. The characterization results indicate that the nitrogen atoms in P4VP interfere with the electronic structure of Cu in Cu2O nanoparticles, causing the N electrons to shift onto Cu. Density functional theory (DFT) calculations suggest that this catalytic system facilitates the activation of oxygen on the copper surface, promoting the coupling reaction. This work provides a feasible strategy for the rational fabrication of MOF-supported polybase and Cu2O nanocrystals as heterogeneous nanocatalysts in the oxidative homocoupling of alkynes.
AB - Terminal alkyne homocoupling is an effective route to synthesize 1,3-diynes, which are crucial components of many fine chemicals and natural products. However, the reaction often faces challenges of catalyst recovery and typically necessitates the introduction of basic additives, which limits its practical applicability. Here, we have developed a green and efficient Cu2O@UiO-66-g-P4VP nanocatalyst that exhibits outstanding activity for homocoupling terminal alkynes under mild, base- or ligand-free conditions. The characterization results indicate that the nitrogen atoms in P4VP interfere with the electronic structure of Cu in Cu2O nanoparticles, causing the N electrons to shift onto Cu. Density functional theory (DFT) calculations suggest that this catalytic system facilitates the activation of oxygen on the copper surface, promoting the coupling reaction. This work provides a feasible strategy for the rational fabrication of MOF-supported polybase and Cu2O nanocrystals as heterogeneous nanocatalysts in the oxidative homocoupling of alkynes.
KW - Alkyne homocoupling
KW - Copper oxide nanoparticles
KW - Heterogeneous catalyst
KW - Metal organic framework
KW - Poly(4-vinylpyridine)
UR - http://www.scopus.com/inward/record.url?scp=85203632765&partnerID=8YFLogxK
U2 - 10.1016/j.colsurfa.2024.135328
DO - 10.1016/j.colsurfa.2024.135328
M3 - 文章
AN - SCOPUS:85203632765
SN - 0927-7757
VL - 703
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
M1 - 135328
ER -