Figure 2 (IMAGE) Institute for Basic Science Caption Floatable photocatalytic platforms have clear advantages in hydrogen evolution reaction, in terms of efficient light delivery, facile gas separation, enhanced surface tension, stable catalyst immobilization, suppressed back-oxidation (reverse reaction), and facile supply of water. Credit Institute for Basic Science Usage Restrictions Attribution Required 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.