In recent years, photocatalytic carbon dioxide reduction has emerged as an attractive strategy to settle the global warming and energy crisis by converting CO2 into valuable chemicals utilizing solar energy. All‐inorganic halide perovskites (PVKs), as a class of promising light‐harvesting materials with outstanding optoelectronic properties and considerable stabilities, have received dramatic attention in the field of photocatalytic CO2 reduction reaction (CO2RR). In this review, the recent progress of PVK catalysts for CO2RR is systematically summarized and evaluated according to the modification strategies and their mechanisms. The working principles of CO2RR are first introduced. The main strategies for improving the photoelectrochemical performance are then discussed and their recent developments are summarized. Finally, the current challenges, including instability, charge recombination, and insufficient active sites, and future research opportunities for further development are addressed.
The immobilization
of enzymes in metal–organic frameworks
(MOFs) with preserved biofunctionality paves a promising way to solve
problems regarding the stability and reusability of enzymes. However,
the rational design of MOF-based biocomposites remains a considerable
challenge as very little is known about the state of the enzyme, the
MOF support, and their host–guest interactions upon immobilization.
In this study, we elucidate the detailed host–guest interaction
for MOF immobilized enzymes in the biointerface. Two enzymes with
different sizes, lipase and insulin, have been immobilized in a mesoporous
PCN-333(Al) MOF. The dynamic changes of local structures of the MOF
host and enzyme guests have been experimentally revealed for the existence
of the confinement effect to enzymes and van der Waals interaction
in the biointerface between the aluminum oxo-cluster of the PCN-333
and the -NH
2
species of enzymes. This kind of host–guest
interaction renders the immobilization of enzymes in PCN-333 with
high affinity and highly preserved enzymatic bioactivity.
Organic-inorganic hybrid perovskites, which combine the advantages of superior optical and electronic properties and solution-processed manufacturing, have emerged as a new class of revolutionary optoelectronic devices with the potential for...
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