Dope Catalyst (IMAGE) University of South Carolina Caption Nitrogen-doped carbon nanotubes proved to be efficient, and potentially inexpensive, catalysts for reducing carbon dioxide. 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.