Chen Dongyun, Zhang Guping, Wang Mengmeng, Li Najun, Xu Qingfeng, Li Hua, He Jinghui, Lu Jianmei
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 Engl. 2021 Mar 15;60(12):6377-6381. doi: 10.1002/anie.202013667. Epub 2021 Feb 1.
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/MnO nanoflowers anchored to boron nitride aerogels (Pt/MnO -BN) were fabricated for the catalytic room temperature oxidation of HCHO. The three-dimensional Pt/MnO -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/MnO -BN aerogels enhance the oxidative removal of HCHO. The optimized Pt/MnO -BN demonstrated excellent catalytic activity toward HCHO (200 ppm) at room temperature, achieving a 96 % formaldehyde conversion after 50 min.
甲醛（HCHO）的催化室温氧化被广泛认为是一种可行的消除室内有毒HCHO污染的方法。在此，制备了锚定在氮化硼气凝胶上的Pt/MnO纳米花（Pt/MnO -BN）用于HCHO的催化室温氧化。三维Pt/MnO -BN气凝胶由于反应物分子在多孔结构内的扩散得到改善而表现出优异的催化活性。此外，多孔气凝胶表现出优异的HCHO吸附能力，这促进了HCHO气相浓度的快速降低以及随后吸附的HCHO的完全氧化。Pt/MnO -BN气凝胶的吸附和氧化性能相结合，增强了对HCHO的氧化去除效果。优化后的Pt/MnO -BN在室温下对HCHO（200 ppm）表现出优异的催化活性，50分钟后实现了96%的甲醛转化率。
