Microwave-assisted construction of MXene/MOF aerogel via N-metal bonds for efficient photodegradation of vapor acetone under high humidity
2023; Elsevier BV; Volume: 476; Linguagem: Inglês
10.1016/j.cej.2023.146878
ISSN1873-3212
AutoresXin Yu, Yang Hu, Xinqi Luan, Syed Jalil Shah, Li Liu, Changhao Li, Yaofei Ren, Liqin Zhou, Jing Li, Jiguang Deng, Kungang Chai, Zhongxing Zhao, Zhenxia Zhao,
Tópico(s)Covalent Organic Framework Applications
ResumoDesigning MOF aerogels possessing highly efficient photocatalytic performance for VOCs photodegradation is a significant but challenging task. Herein, a microwave-assisted bridging strategy was proposed to construct MXene/MOF aerogel photocatalysts based on the wave-absorbing hot-spots effect of MXene for efficient acetone photodegradation in high humidity. The MXene/MOF aerogel formed abundant and intimate nano-interfaces via N-metal (N-Ti[MXene] and N-Zr[NH2-UiO-66(Zr)] bi-bonding under microwave irradiation, which enhanced light absorption, OH/O2− radicals formation, photo-induced electron-hole (e–/h+) generation, and their separation. Consequently, it exhibited excellent acetone photodegradation (97.3%) in 80% high humidity, with 10–104 times higher apparent rate constants (k*) than those of state-of-the-art photocatalysts. Moreover, MXene/MOF aerogel photocatalyst realized ∼ 95% TOC removal of acetone within 60 min and exhibited remarkable photocatalytic stability after five cycling-runs. Considering these attributes, the newly designed MXene/MOF aerogel photocatalysts have the potential to provide a practical approach for the efficient degradation of VOCs under high humidity conditions.
Referência(s)