| abstract |
The invention relates to a preparation method of α-Fe 2 O 3 doped biochar and its application. The present invention aims to overcome the deficiencies in the prior art that iron oxide catalyzes the degradation of pollutants. In order to achieve the purpose, the technical scheme of the present invention is as follows: first, biochar is added to the ferrous sulfate heptahydrate solution, and NaOH solution is added dropwise to make the solution alkaline, Then react under rapid magnetic stirring, stand, wash the precipitate, then dry the obtained precipitate overnight, and finally calcine the dried solid at high temperature to obtain a dark reddish-brown doped solid powder. The α-Fe 2 O 3 doped biochar prepared by the invention is used as a catalyst in the field of organic pollutant treatment. The invention improves the adsorption performance, stability and dispersibility of the composite material and the oxidative degradation performance of organic dyes, and the raw materials are environmentally friendly and clean, and the price is low. |