Defining Success at the Atomic Level (IMAGE) University of South Carolina Caption The microstructure of the nitrogen-doped carbon nanotubes was crucial to the efficiency of the catalyst. Pyridinic nitrogens within the carbon backbone were more selective for carbon dioxide reduction than pyrrolic or graphitic nitrogens. Credit [Image: Adapted from <i>Angewandte Chemie</i>] Usage Restrictions Credit <i>Angewandte Chemie</i> License Licensed 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.