Controllable synthesis method of monoatomic catalyst with low cost and high loading capacity

The invention discloses a controllable synthesis method of a monoatomic catalyst with low cost and high loading capacity, the monoatomic catalyst prepared by a method takes graphite-phase carbon nitride as a substrate, has the characteristics of low cost, high metal element loading capacity, controllable content and adjustable variety, and meanwhile, the method can be used for preparing the single-metal single-atom catalyst and a multi-metal single-atom catalyst, the single-atom catalyst has excellent catalytic activity and stability, and by taking the silver single-atom catalyst as an example, the visible light hydrogen production rate of the silver single-atom catalyst is 6.2 times that of silver nanoparticle-loaded graphite-phase carbon nitride, and after 60-hour continuous photocatalytic hydrogen production test, the hydrogen production rate is almost unchanged. 本发明公开了一类低成本且兼具高负载量单原子催化剂可控合成方法，本发明制备的单原子催化剂以石墨相氮化碳为基底，具有成本低、金属元素负载量高、含量可控以及种类可调的特点，同时，该方法不仅能够制备单金属单原子催化剂而且能够制备多金属单原子催化剂，另外，单原子催化剂具有优异的催化活性和稳定性，以银