Method for preparing and characterizing copper ion modified nano-titanium dioxide

The invention provides a method for preparing and characterizing copper ion modified nano-titanium dioxide, belongs to the technical field of catalysts and solves the problems that the photocatalyticefficiency and degradation effect and the like are severely reduced since TiO2 has a relatively wide energy band gap, only receives excitation of ultraviolet irradiation to achieve the catalytic performance and has low visible light utilization rate but relatively high recombination rate of a photogenic electron hole pair. According to the technical scheme, the method comprises the following steps: firstly, weighing absolute ethyl alcohol in a beaker, adding butyl titanate into the beaker, performing stirring until a uniform and transparent solution A is obtained; weighing absolute ethyl alcohol, acetic acid and distilled water, adding a certain amount of cupric nitrate into the beaker, performing uniform stirring and taking the mixture as solution B; and dropwise adding the solution A into the solution B until a