How can we combine photocatalysis with other technologies, such as electrocatalysis, to achieve more efficient and versatile energy conversion and storage?
Umar Farooq
Photocatalysis followed by electrocatalysis: In this approach, a photocatalyst is used to generate an intermediate species, which is then further processed using an electrocatalyst. For example, a photocatalyst could be used to generate hydrogen from water, which is then electrochemically converted into electricity using an electrocatalyst. Photocatalysis and electrocatalysis in tandem: In this approach, both photocatalysis and electrocatalysis are used simultaneously to catalyze a reaction. For example, a photocatalyst and an electrocatalyst could be used together to convert carbon dioxide into a fuel such as methane or methanol. Sequential photocatalysis and electrocatalysis: In this approach, photocatalysis and electrocatalysis are carried out in sequence, with the product of one reaction serving as the starting material for the next. For example, a photocatalyst could be used to oxidize an organic molecule to produce a carboxylic acid, which is then electrochemically reduced to an aldehyde using an electrocatalyst. Co-catalyst photocatalysis and electrocatalysis: In this approach, two different catalysts are used in combination to promote both photocatalysis and electrocatalysis. For example, a metal oxide photocatalyst could be combined with a metal catalyst for electrochemical reduction of CO2.
Combining photocatalysis with other technologies, such as electrocatalysis, can enhance the efficiency and selectivity of the overall catalytic process. There are several ways in which these technologies can be integrated, including:
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