Natural Deep Eutectic Solvents Enhanced Electro-Enzymatic Conversion of CO2 to Methanol
Zhibo Zhang, Hui Wang, Yi Nie, Xiangping Zhang, Xiaoyan Ji
Abstract
Electro-enzymatic conversion of CO 2 offers a promising solution for CO 2 utilization, while the conversion rate and efficiency were disappointing. To address the challenge, four kinds of natural deep eutectic solvents (NADES) with desirable biocompatibility were developed for the first time and used as the co-electrolyte in the electro-enzymatic conversion of CO 2 . As a result, the SerGly-based solution presents high CO 2 solubility and high electrocatalytic activity, compared to the conventional buffer. By applying SerGly in the electro-enzymatic conversion of CO 2 , the yield of the product (methanol) is two times higher than that in the Tris-HCl buffer (0.22 mM) and 16 times higher than the control reaction.