Potential-assisted photocatalysis

Potential-assisted photocatalysis combines the advantages of photocatalysis with those of electrocatalysis. It is a combined technology that improves the efficiency of photocatalysis by the applicahon of an external potential. This potential difference can either be simply a result of the resting potentials of the differing electrodes, or the apphcation of an external electrically applied bias. This concept was first introduced by Honda and Fujishima, as they demonstrated the photoelectrocatalysis of water under the influence of an anodic bias [1]. 

B) Electrochemically-assisted photocatalysis As discussed above, photocatalytic processes are electrochemical in nature. A clever enhancement approach involves the application of a judiciously selected potential bias to a semiconductor electrode. The potential promotes a better charge-separation, thus decreasing the electron-hole recombination and increasing the yield of the target processes. This approach is called electrochemically... 

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