Efficient Visible‐Light‐Driven Photocatalytic Hydrogen Generation over 2D/2D Co‐ZIF‐9/Ti<sub>3</sub>C<sub>2</sub> Hybrids
Yitong Sun, Min Xie, Huifang Feng, Hong Liu
Abstract
Abstract Exploring precious‐metal‐free catalysts for efficient photocatalytic H 2 evolution is highly desirable but still challenging. Herein, a novel 2D/2D Co‐ZIF‐9/Ti 3 C 2 composite was fabricated by a facile electrostatic self‐assembly strategy. Owing to higher flux of photogenerated electron‐holes and lower rate of recombination, the resultant composite exhibited better photocatalytic H 2 evolution compared to Co‐ZIF‐9. When the content of Ti 3 C 2 was 2.5 wt %, a maximum photocatalytic H 2 ‐generation rate of 3538.5 μmol g −1 ⋅ h −1 was achieved, which is 9.6 times that of bare Co‐ZIF‐9. Moreover, the Co‐ZIF‐9/Ti 3 C 2 composite displayed high photocatalytic stability. This study demonstrated for the first time the great potential of Co‐ZIF‐9/Ti 3 C 2 as a noble‐metal‐free catalyst for photocatalytic H 2 generation.