Amine-Functionalized ZnO Nanosheets for Efficient CO2 Capture and Photoreduction

Molecules

Yusen Liao²  Zhaoning Hu²  Quan Gu²  Can Xue¹  Jimmy C. Yu² 

[1] School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore, Singapore;

关键词: photocatalysis;    CO₂ reduction;    solar fuels;    zinc oxide;   

DOI  :  10.3390/molecules201018847

来源: mdpi

【 摘 要 】

Amine-functionalized ZnO nanosheets were prepared through a one-step hydrothermal method by using monoethanolamine, which has a hydroxyl group, for covalent attachment on ZnO and a primary amine group to supply the amine-functionalization. We demonstrate that the terminal amine groups on ZnO surfaces substantially increase the capability of CO₂ capture via chemisorption, resulting in effective CO₂ activation. As a result, the photogenerated electrons from excited ZnO can more readily reduce the surface-activated CO₂, which thereby enhances the activity for photocatalytic CO₂ reduction.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.