Preparation method of nano-metal or metal oxide-loaded activated carbon composite material

The invention discloses a high-efficiency preparation method of high-activity and high-surface-area activated carbon loaded with nano-sized metal or metal oxide, which comprises an adsorption process of mixing a metal compound solution and an activated carbon solution to enable a metal compound to be attached to the surface of the activated carbon, and a heating decomposition process of the metal compound. In the adsorption process, the metal compound is adsorbed on the activated carbon; the heating decomposition process is carried out in supercritical carbon dioxide or is carried out by adopting microwave heating under atmospheric pressure; and finally, obtaining the nano-metal or metal oxide-loaded active carbon composite material. 本发明公开了一种担载纳米尺寸金属或金属氧化物的高活性、高表面积活性炭的高效制备方法，通过将金属化合物溶液和活性炭溶进行混合，使金属化合物附着在活性炭表面的吸附过程，以及金属化合物加热分解过程；吸附过程使金属化合物吸附在活性炭上的过程；加热分解过程在超临界二氧化碳中进行，或者在大气压下采用微波加热进行；最后得到一种担载纳米金属或金属氧化物的活性炭复合材料。