The key point of photocatalytic hydrogen evolution technique is in developing efficiently and stably photocatalysts. The photocatalysts generates hole electronic under light irradiation, the electronic reduces the H+ to produce H2. Since the photocatalytic hydrogen evolution first reported by Fujishima A and Honda K in 1972, this field has received more and more attention from researchers and many photocatalysts has been reported in succession.
Figure 1. The hydrogen energy
Generally, there are several crucial processes in the reaction of the photocatalytic hydrogen evolution:
a) Semiconductor photocatalyst absorbs light.
b) Then, the photocatalyst generates electron-charge pairs.
c) Subsequently, the photoinduced electron-hole carriers were separated and transferred.
d) Finally, the reduction of H+ by active electrons to produce H2.
Figure 2. Schematic illustration of photocatalytic hydrogen evolution.
Alfa Chemistry's technical R&D team has focused on the preparation and application of photocatalysts for many years, which has established long-term cooperative relationships with many well-known enterprises and research institutions. We have conducted research on various problems encountered by photocatalytic hydrogen evolution, which can select the appropriate solution according to the customer's experimental purpose. The related technologies of photocatalytic hydrogen evolution we provide are as follows:
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