Vibration‐driven Reduction of CO2 to Acetate with 100 % Selectivity by SnS Nanobelt Piezocatalysts

Abstract Converting CO 2 into high‐value C2 chemicals such as acetate with high selectivity and efficiency is a critical issue in renewable energy storage. Herein, for the first time we present a vibration‐driven piezocatalysis with tin(II) monosulfide (SnS) nanobelts for conversion of CO 2 to acetate with 100 % selectivity, and the highest production rate (2.21 mM h −1 ) compared with reported catalysts. Mechanism analysis reveal that the polarized charges triggered by periodic mechanical vibration promote the adsorption and activation of CO 2 . The electron transfer can be facilitated due to built‐in electric field, decreased band gap and work function of SnS under stress. Remarkably, reduced distance between active sites leads to charge enrichment on Sn sites, promoting the C−C coupling, reducing the energy barriers of the rate determining step. It puts forward a bran‐new strategy for converting CO 2 into high‐value C2 products with efficient, low‐cost and environment‐friendly piezocatalysis utilizing mechanical energy.