光催化
材料科学
吸附
瓶颈
半导体
化学工程
纳米技术
光化学
光电子学
催化作用
化学
物理化学
计算机科学
生物化学
工程类
嵌入式系统
作者
Cong Fu,Lingfang Liu,Zhaorui Li,Yaxiong Wei,Weixin Huang,Xiaojun Zhang
标识
DOI:10.1021/acs.jpclett.3c01865
摘要
Artificial photosynthesis of H2O2 by TiO2-based semiconductors is a promising approach for H2O2 production. However, the efficiency of pristine TiO2 is still limited by rapid charge separation and low O2 adsorption capacity. Here, we found that the synergy between bulk and surface defects on TiO2 could overcome this demanding bottleneck. The introduced bulk defects act as hole acceptors to induce directional hole transfer, efficiently boosting electron-hole separation. Furthermore, the adsorption of O2 is strengthened by the introduced surface defects. Consequently, this synergy of bulk and surface defects on TiO2 significantly improves the photocatalytic performance, with a H2O2 production rate of 4560 μmol h-1 g-1, outperforming most reported TiO2-based photocatalysts. This work not only provides a new insight into the mechanism of surface/bulk defects in photocatalysis but also highlights that surface/bulk regulation holds great promise for achiveing efficient photocatalytic conversion.
科研通智能强力驱动
Strongly Powered by AbleSci AI