Preparation of β-MnO2 nanorods through a γ-MnOOH precursor route
2004; Elsevier BV; Volume: 39; Issue: 11 Linguagem: Inglês
10.1016/j.materresbull.2004.05.014
ISSN1873-4227
AutoresGuangcheng Xi, Yiya Peng, Yongchun Zhu, Liqiang Xu, Wanqun Zhang, Weichao Yu, Yitai Qian,
Tópico(s)Diamond and Carbon-based Materials Research
ResumoA new MnOOH precursor route has been developed to synthesize single-crystalline nanorods of tetragonal β-MnO2. Uniform γ-MnOOH nanorods were first prepared by reducing KMnO4 with KI under hydrothermal conditions at 120 °C. After calcination of the γ-MnOOH nanorods at 250 °C for 2 h in air, β-MnO2 nanorods retaining the morphologies of γ-MnOOH nanorods were obtained. The temperature, time and heating speed of calcination were found to be important for the morphologies of the β-MnO2 nanorods.
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