Figure 2 (IMAGE) Tohoku University Caption Representation of the Faradic Efficiency of the CO2 reduction products of different Cu NC samples at -1.2 V vs. a reversible hydrogen electrode (a) product collected after initial 2h of reaction and (b) product collected after 16h of reaction represent the sustainability of the selectivity of the products. Credit ©Yuichi Negishi et al. Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.