Silver tungstate nanowire and preparation method thereof

The invention discloses silver tungstate nanowire and a preparation method thereof and belongs to the field of semiconductor photocatalysis materials and nano-materials. The invention aims to solve the technical problem that silver tungstate prepared by existing methods is hard to recover. The silver tungstate nanowire is prepared by using sodium tungstate and silver nitrate as main raw materials through a hydrothermal synthesis method. The preparation method of the invention comprises the following steps: stirring while dropwise adding a silver nitrate solution into a sodium tungstate solution, and adjusting pH value to 2.5-3 by the use of dilute nitric acid; putting the solution into a polytetrafluoroethylene-lined reaction vessel and carrying out a hydrothermal synthesis reaction; cooling after the hydrothermal reaction, opening the reaction vessel, fetching sediments, carrying out ultrasonic cleaning successively by the use of deionized water and anhydrous ethanol, and carrying out vacuum drying to obtain the silver tungstate nanowire. The invention is of great practical application significance and application value in photocatalytic degradation of environmental organic pollutants such as organic dye, etc.