The invention relates to a firework-shaped nano-ZnO photocatalyst prepared based on a one-step
calcination method and a method thereof. An existing micron-grade bar-shaped ZnO preparation technology is rigor and complex in condition, the purity of products is low, the performance is poor, or high-purity
metal zinc is adopted as raw materials, and the cost is high. According to the firework-shaped nano-ZnO photocatalyst based on the one-step
calcination method and the method thereof,
zinc acetate dehydrate is placed in a
ceramic crucible at the volume ratio of (1-3):60, then the
ceramic crucible is covered with a
crucible cover and is placed in a furnace chamber of a box type resistance furnace, heating
calcination is conducted, the temperature is gradually reduced to the indoor temperature, and then firework-shaped nano-ZnO self-assembled by nano-bars with the length of 1-8
micrometer and the
diameter of 10-80 nm is formed on the crucible wall. According to the firework-shaped nano-ZnO photocatalyst prepared based on the one-step calcination method and the method thereof, the
zinc acetate dehydrate serves as a zinc source, the one-step calcination method is adopted to obtain the firework-shaped nano-ZnO photocatalyst which is low in cost, uniform in size and good in photocatalytic activity under the action of visible light, the purity of products is high, the preparation
system is stable, the method is suitable for large-area preparation, and technical supports are provided for industrially producing the high-purity nano-ZnO photocatalyst.