▎ 摘　　要

NOVELTY - Adsorbent preparation involves adding 10-15 pts. wt. carbon material graphene deionized in water ultrasonic dispersion to give a homogeneous solution. 80-90 pts. wt. mesoporous nano metal frame material of support material is added into the prepared homogeneous solution to give precursor solution. The obtained precursor solution is mixed with 2-5 pts. wt. hydrazine hydrate, 1-2 pts. wt. ammonium bicarbonate and 2-4 pts. wt. aqueous ammonia solution. The resulting mixture is heated at 80-100 degrees C under reflux conditions for generating black solution. USE - Method for preparing adsorbent for purifying formaldehyde (claimed). ADVANTAGE - The method prepares the adsorbent in a simple, cost-effective and eco-friendly manner with good pore properties, large specific surface area, higher adsorption capacity compared to traditional carbon sorbent material, and less dust generation, long service life, and frequent replacement. DETAILED DESCRIPTION - Adsorbent preparation involves adding 10-15 pts. wt. carbon material graphene deionized in water ultrasonic dispersion to give a homogeneous solution. 80-90 pts. wt. mesoporous nano metal frame material of support material is added into the prepared homogeneous solution to give precursor solution. The obtained precursor solution is mixed with 2-5 pts. wt. hydrazine hydrate, 1-2 pts. wt. ammonium bicarbonate and 2-4 pts. wt. aqueous ammonia solution. The resulting mixture is heated at 80-100 degrees C under reflux conditions for generating black solution. The formed black solution is filtered, and dried to give the formaldehyde removal adsorbent.