In this study, silver nanowires (AgNW$_s$) were prepared by the polyol method using silver nitrate (AgNO$_3$) asthe silver source and polyvinylpyrrolidone (PVP) as the structure-directing agent under different reaction conditions. Inorder to obtain AgNW$_s$ with good uniformity and electrical conductivity, the orthogonal experiment method was adopted to design an experimental scheme. The scanning electron microscope, energy-dispersive X-ray spectrometer, X-ray diffraction, UV-2550 UV–Visible spectrophotometer, transmission electron microscope, Fourier transform infrared and Raman spectra were combined to characterize synthesized AgNW$_s$. It can be concluded from experimental data that when the reaction temperature is 150$^{\circ}$C, the ratio of AgNO$_3$ to PVP is 1:3, the drop rate of PVP is 65 ml h$^{–1}$, with the existence of ferric chloride (FeCl3), and the AgNW$_s$ exhibit optimal morphology with the diameter ranging from 60 to 200 nm. The results in this study will provide experimental guide for controllable formation of AgNW$_s$.

The preparation of titanium dioxide fibres with high specific surface area as a catalyst carrier is of great significance for the subsequent development of TiO$_2$ fibres in the field of electrocatalysis. In this article, the electrospinning technology combined with sol–gel method was adopted to manufacture mesoporous TiO$_2$ fibres using tetrabutyl titanate as the titanium source, polyethylene pyriolanone as the polymer template and ethanol as the solvent. By means of cold field-emission scanning electron microscopy, transmission electron microscopy, desktop electron microscope (TM3030), energy dispersive X-ray spectroscopy, thermal analyzer, X-ray diffraction, X-ray photoelectron spectroscopy, porometer 3G specific surface area and pore size analyzer, the morphology characterization of TiO$_2$ fibre under different conditions was analysed and the optimal preparation parameters of mesoporous TiO$_2$ fibres was proposed.