Fig. 5 Comparison of the liquid products generated from photocatalytic CO2 reduction reactions (CO2RR) and CO reduction reactions (CORR) on two catalysts. Comparison of the liquid products generated from photocatalytic CO2 reduction reactions (CO2RR) and CO reduction reactions (CORR) on two catalysts. (A) Ni(TPA/TEG). (B) Ni(TPA/TEG)-Ag. Kaiyang Niu et al. Sci Adv 2017;3:e1700921 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).