Preparation method of polyhedral silver phosphate
The invention relates to a preparation method of polyhedral silver phosphate and belongs to the technical field of photocatalysis. The preparation method comprises the following steps: firstly, mixing a silver nitrate aqueous solution and ammonia water to prepare an ammoniacal silver nitrate; uniformly mixing the ammoniacal silver nitrate and sodium dodecyl benzene sulfonate to form a first mixed solution; uniformly mixing a disodium hydrogen phosphate aqueous solution and sodium dodecyl benzene sulfonate to form a second mixed solution; under the stirring condition, dropwise adding the second mixed solution into the first mixed solution to obtain a yellow turbid solution; finally, after carrying out centrifugal washing on the yellow turbid solution, drying to obtain the polyhedral silver phosphate. The preparation method disclosed by the invention is simple; production can be carried out at room temperature; heating is not needed; the preparation method is energy-saving and environmental-friendly and is suitable for industrial production. The prepared silver phosphate is of a polyhedral shape, and has novel structure and high photocatalytic activity. 1. A polyhedron silver phosphate preparation method, which is characterized by comprising the following steps: 1) the concentration is 0.1-1mol/L of the silver nitrate aqueous solution and ammonia water mixed, silver ammonia solution is made; 2) to the silver solution of ammonia and sodium dodecyl benzene sulfonate uniformly mixed, mixed solution formed 1st; 3) the concentration is 0.01-0.1mol/L of an aqueous solution of sodium acid phosphate and sodium dodecyl benzene sulfonate are evenly mixed, a mixed solution of 2nd; 4) under the condition of stirring, 1st 2nd mixed liquid droplet applied to the mixed solution, to obtain yellow cloudy liquid; 5) after the yellow cloudy liquid centrifugal washing, in 40 the temperature [...] drying, obtain nanopolyhedra silver phosphate. 2. The process for preparing silver phosphate according to Claim 1, characterized in that the the sodium dihydrogen phosphate states the silver nitrate the feeding molar ratio of 3:1. 3. The process for preparing silver phosphate according to Claim 1, is characterized in that the silver ammonia solution with aqueous solution of sodium dihydrogen phosphate feeding volume ratio of 4:3. 4. The process for preparing silver phosphate according to Claim 1, characterized in that said step 4) in, 1st of mixed solution of sodium dodecyl benzene sulfonate with the 2nd the concentration of the mixed solution of the same concentration of sodium dodecyl benzene sulfonate.