In this work, SiO2 hollow (HNF) and non-hollow (nHNF) nanofibers were successfully fabricated and optimized by combination of electrospinning, sol-gel and thermal decomposition methods depending. The wall thickness of the HNF was in the range of 10-26 nm depended to the average diameter of the template. The thermal decomposition occurred at two different temperatures of 530 and, 1030 degrees C. The effects of the electrospinning conditions, the concentration, of SiO2 precursor, and thermal decomposition temperature on the nanofibers morphology were investigated by scanning electron microscopy. The influence of hollow morphology on cystalline phase, thermal resistance, surface charge and BET surface area were investigated by X-ray diffraction, thermography analysis, zeta potential, and, Brunauer-Emmett-Teller (BET) analysis, respectively. In addition, the chemical changes occurred, in the sol-gel process were determined by Fourier transform infrared spectroscopy. The result showed, higher weight loss and BET surface area values for HNF in comparison to the nHNF after thermal decomposition process. According to results, the temperature applied in thermal decomposition process bad a direct influence on properties of nanofibers. Dye removal ability of synthesized nanofibers was investigated by considering adsorption dosage, pH, and dye concentration. Also, the dye adsorption isotherm and, kinetic were studied. Nonlinear regression was used to determine the, best fit model for each system. To do this, 3 error functions were applied to predict, the optimum model. Among various isotherm models, Lang-muir model represented the equilibrium adsorption data white kinetic experimental data were well fitted, by pseudo-second-order model on both adsorbents. (C) 2017 American Institute of Chemical Engineers