Details

Autor(en) / Beteiligte

• Liu, Hengfa
• Zhang, Bentian
• Li, Wanping
• Cheng, Gao
• Han, Jiaxi
• Lan, Bang
• Sun, Ming
• Yu, Lin

Titel

Hierarchical branched α-MnO 2 : one-step synthesis and catalytic activity

Ist Teil von

• RSC advances, 2017, Vol.7 (74), p.46529-46535

Erscheinungsjahr

2017

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Hierarchical pine tree-like α-MnO 2 architectures are prepared by a facile one-step method without any template. The hierarchical α-MnO 2 is composed of branched α-MnO 2 short nanorods assembled onto the backbone of an α-MnO 2 long nanowire. Time-dependent experiment shows that the growth process of the branched α-MnO 2 nanostructures is the formation of β-MnOOH and then the transformation to a α-MnO 2 branched structure in a step by step manner. Owing to its specific structure features, the hierarchical pine tree-like α-MnO 2 exhibits superior catalytic performance in the catalytic combustion of dimethyl ether with a light-off temperature ( T 10 ) at 169 °C and a complete conversion temperature ( T 90 ) of 235 °C, which is far better than commercial MnO 2 .