The crystalline α-MnO_(2) and β-MnO_(2) nanorods have been successfully prepared via a facile hydrothermal method from γ-MnOOH nanorods precursor,respectively.The samples were characterized by means of X-ray diff r...The crystalline α-MnO_(2) and β-MnO_(2) nanorods have been successfully prepared via a facile hydrothermal method from γ-MnOOH nanorods precursor,respectively.The samples were characterized by means of X-ray diff raction(XRD),transmission electron microscopy(TEM),high-resolution transmission electron microscopy(HRTEM),field emission scanning electron microscope(FESEM)and Fourier transformed infrared spectra(FTIR).The morphology and structure of γ-MnOOH nanorods precursors have a great influence on the crystal structure of the obtained products.The α-MnO_(2) nanorods are prepared from the 100℃ γ-MnOOH precursor,while the β-MnO_(2) nanorods are obtained from the 150℃ γ-MnOOH precursor,respectively.Besides,the catalytic activity of the prepared α-MnO_(2) and β-MnO_(2) nanorods for the H2O2 decomposition has been investigated comparatively,and the latter shows better catalytic activity.展开更多
基金This project was financially supported by the National Natural Science Foundation of China(Grant No.20576024)Anhui Provincial Natural Science Foundation(Grant No.070414165)the Excellent Young Teachers Program of the Ministry of Education of China.
文摘The crystalline α-MnO_(2) and β-MnO_(2) nanorods have been successfully prepared via a facile hydrothermal method from γ-MnOOH nanorods precursor,respectively.The samples were characterized by means of X-ray diff raction(XRD),transmission electron microscopy(TEM),high-resolution transmission electron microscopy(HRTEM),field emission scanning electron microscope(FESEM)and Fourier transformed infrared spectra(FTIR).The morphology and structure of γ-MnOOH nanorods precursors have a great influence on the crystal structure of the obtained products.The α-MnO_(2) nanorods are prepared from the 100℃ γ-MnOOH precursor,while the β-MnO_(2) nanorods are obtained from the 150℃ γ-MnOOH precursor,respectively.Besides,the catalytic activity of the prepared α-MnO_(2) and β-MnO_(2) nanorods for the H2O2 decomposition has been investigated comparatively,and the latter shows better catalytic activity.
