Pt/MnO2 Nanoflowers Anchored to Boron Nitride Aerogels for Highly Efficient Enrichment and Catalytic Oxidation of Formaldehyde at Room Temperature
Dongyun Chen, Guping Zhang, Mengmeng Wang, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, and Jianmei Lu*（路建美）
College of Chemistry, Chemical Engineering and Materials Science，Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University，Suzhou 215123 (P. R. China)
Angew. Chem. Int. Ed. 2021, 60, 6377--6381
The catalytic room temperature oxidation of formaldehyde (HCHO) is widely considered as a viable method for the abatement of indoor toxic HCHO pollution. Herein, Pt/MnO2 nanoflowers anchored to boron nitride aerogels (Pt/MnO2‐BN) were fabricated for the catalytic room temperature oxidation of HCHO. The three‐dimensional Pt/MnO2‐BN aerogels demonstrated superior catalytic activity as a result of the improved diffusion of the reactant molecules within the porous structure. Furthermore, the porous aerogels displayed excellent HCHO adsorption capacities, which promote a rapid HCHO gas‐phase concentration reduction and a subsequent complete oxidation of the adsorbed HCHO. The combined adsorption and oxidation properties of the Pt/MnO2‐BN aerogels enhance the oxidative removal of HCHO. The optimized Pt/MnO2‐BN demonstrated excellent catalytic activity toward HCHO (200 ppm) at room temperature, achieving a 96 % formaldehyde conversion after 50 min.