In this paper, a Pd-TiO2 nanofiber structure with photoactivation capability for H-2 gas sensing is made using the electrospinning procedure. The solution which was stacked into the syringe for electrospinning Pd-TiO2 nanofibers consisted of titanium tetraisopropoxide, acetic acid, ethanol, polyvinyl pyrrolidone, and different amounts of Pd solution. The X-ray diffraction, field emission scanning microscopy, transmission electron microscopy, and spectrophotometry techniques were employed to analyze the crystalline structure and surface morphology of the nanofibers. Moreover, Fe2O3 and HNO3 were also used as additional additives and the effect of additives in the absorption spectrum shift towards the visible light spectrum was investigated. About 95-nm red shift toward visible light from 370 to 465 nm for TiO2/Pd/N/Fe2O3 was observed in comparison with the pure TiO2 nanofibers. By using additives and visible light irradiation, the operating temperature lowered from 290 degrees C to 130 degrees C and the response increased from 11 to 368. At an operating temperature of 150 degrees C, the response time also reduced from 25 to 0.9 s and recovery times reduced from 40 to 2 s. The response dropped only by similar to 30%, 12%, and 5% after nine months for the TiO2, TiO2/Pd, and TiO2/Pd/N/Fe2O3 samples, respectively.