Surface Hydroxyl and Oxygen Vacancies Engineering in ZnSnAl LDH: Synergistic Promotion of Photocatalytic Oxidation of Aromatic VOCs

• DOI: 10.1021/acs.est.3c08860
• Publication Date: 2024-02-04T13:57:04Z
• Authors: Biyuan Liu; Boge Zhang; Biying Liu; Zhuofeng Hu; Wenjing Dai; Jiarui Zhang; Fada Feng; Bang Lan; Tao Zhang; Haibao Huang
• Keywords: Chlorobenzene; Hydroxyl radical

Photocatalytic oxidation has gained great interest in environmental remediation, but it is still limited by its low efficiency and catalytic deactivation the degradation of aromatic VOCs. In this study, we concurrently regulated surface hydroxyl oxygen vacancies introducing Al into ZnSn layered double hydroxide (LDH). The presence distorted species induced local charge redistribution, leading to remarkable formation vacancies. These subsequently increased amount elongated bond length. synergistic effects greatly enhanced reactant adsorption-activation facilitated transfer generate •OH, •O2–, 1O2, resulting highly efficient ring-opening various Compared with commercial TiO2, optimized ZnSnAl-50 catalyst exhibited about 2-fold activity for toluene styrene 10-fold chlorobenzene degradation. Moreover, demonstrated exceptional stability photocatalytic under a wide humidity range 0–75%. This work marvelously improves efficiency, stability, adaptability through novel strategy engineering.