*2.7. Controlled Potential Electrolysis Experiments*

Bulk electrolysis experiments were performed in an undivided cell using a threeelectrode setup with carbon cloth modified by catalysts as the working electrode, platinum plate electrode as the counter electrode, and Ag/Ag<sup>+</sup> electrode as the reference electrode. A mixture of acetonitrile (10 mL) containing supporting electrolyte LiClO4 (1.0 mmol) and benzyl alcohol (0.5 mmol) was added to the undivided cell with applied potential of 1.6 V vs. Ag/Ag+. After the electrolysis experiment, biphenyl was added to the reaction solution as internal standard, and then the product was quantitatively detected by GC. For the recycle test, carbon cloth modified by compound **1** was washed three times with acetonitrile and ethyl alcohol, and dried for the next cycle.

#### **3. Results and Discussion**
