Abstract
We report the first formation of InN and In2O3 nanorods by using mesoporous silica template. By a simple method, In(NO3)3 dissolved in methanol was directly incorporated into non-functionalized SBA-15 powder. Large amount of InN and In2O3 nanorods were formed in the channels of SBA-15 after nitridation and oxidation process respectively. The nanorods are uniform with diameters of 5－7 nm and lengths of 30－40 nm. The final products have been characterized by FT-IR, solid-state 29Si MAS NMR spectra, powder XRD patterns, TEM images and SAED patterns, Raman spectra and nitrogen absorption-desorption isotherm measurements. In terms of optical properties, the band gap energy value of InN nanorods estimated from absorption spectra is 1.5 eV and PL emission peak is at 598 nm in the visible region which is due to a small amount of In2O3 incorporated in InN. In2O3 nanorods show an absorption band around 300 nm and a near-band-edge emission at 387 nm.