In summary, we have successfully
synthesized PT catalyst using evaporation induced self-assembly method. It
features a high specific surface area and abundant Pd sites, enabling Ullmann
cross-coupling reactions at reduced reaction temperatures. Additionally, owing
to the anchoring of Pd sites within the mesoporous TiO2 framework, PT maintains
high stability and catalytic activity even after 8 catalytic cycles, presenting
promising prospects for applications in photocatalytic Ullmann coupling and
other C–X bond activation reactions.