Method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon

The invention belongs to the technical field of nanometer material preparation, and relates to a method for loading nanocrystalline metal oxide or nanocrystalline metal materials by porous carbon. Urea derivatives, saccharides and metal salt can form the characteristics of even mixed solutions at certain temperature, the porous carbon is formed in situ after dehydration and carbonization, and then the nanocrystalline metal oxide or the nanocrystalline metal materials loaded by the porous carbon are prepared through high temperature treatment. According to the method, the raw material ratio, response time, heat treatment temperature and other synthesis condition are changed, and carrying type nanometer materials with the carrying amount, the size of the particle diameter, the crystalline phase and components simultaneously controllable can be obtained. The whole process has the advantages of being easy to operate, environmentally friendly, low in cost and the like, the obtained nanocrystalline metal oxide or nanocrystalline metal materials loaded by the porous carbon have wide application prospects in industrial catalysis, water treatment, electrochemistry and other aspects.