Photocatalysis has been comprehensively applied to diverse
valuable
chemical transformations. However, photocatalytic processes have encountered
obstacles in gaining wide acceptance in industry, primarily due to
scale-up challenges, especially in heterogeneous systems involving
equivalent amounts of solids. We designed a photo-continuous stirred
tank reactor (CSTR) protocol for heterogeneous photocatalytic processes,
which is capable of multiphasic processes with excellent adaptability.
Furthermore, glass-wool-supported photocatalyst was successfully made,
applied, and recycled at least 12 times without any decrease in hydroxylation
of phenylboronic acid in reactivity, enabling gram scale synthesis
with high efficiency in photo-CSTR.