# Continuous Flow Photocatalysis for Sustainable Chemical Conversions

## TL;DR

This paper explores how continuous flow systems can improve photocatalytic chemical reactions for sustainable synthesis.

## Contribution

The paper provides a critical overview and future outlook of continuous flow photocatalysis for scalable and sustainable chemical conversions.

## Key findings

- Photocatalytic chemical conversions in continuous flow can enhance light absorption and mass transfer.
- Immobilization and solar-driven systems are key areas of recent progress in flow photocatalysis.
- Future development requires affordable photocatalysts and automated flow systems for profitable reactions.

## Abstract

Photocatalytic
chemical conversion shows a bright future
in sustainable
synthesis but encounters great challenges in scale-up. Photocatalysis
in flow is considered as a solution for maximizing light absorption
and mass transfer of reactants and thus has attracted fundamental
and applied research. This perspective provides an overview of recent
progress on photocatalytic chemical conversions in continuous flow
from the viewpoint of system design, circulation, immobilization of
photocatalysts, and solar-driven photocatalytic systems. An outlook
on the future development of photocatalytic chemical conversion in
flow is proposed based on a critical analysis of the challenges for
applications, revealing the necessity of intensifying potentially
profitable reactions using affordable photocatalysts by self-sustained
automated flow systems.