A dual-mode photocatalytic reactor based on the biomimetic structure of *
Hylocereus undatus* is disclosed, relating to the field of
industrial waste gas purification technology. The reaction unit mimics the spherical multicellular
aggregate structure of *
Hylocereus undatus*, which efficiently utilizes
light energy and promotes material exchange. This constructs a novel device that can simultaneously enhance
light energy capture, optimize the reaction flow field, and achieve modular maintenance, thereby improving energy utilization efficiency,
mass transfer performance, and ease of operation.