▎ 摘　　要

NOVELTY - Treating high fluorine content of domestic water involves taking 20-30ml 2-6mmol/L graphene oxide, then adding with 3-5ml 10 mmol/L silver nitrate, and mixing under ultrasonication for 30 minutes to obtain mixture. The mixture is drop-wise added with 7 mol/L sodium hydroxide solution under magnetic stirring, then cooling, filtering and washing with water. The mixture is then drop-wise added with 0.05 M 3-5ml silver nitrate under stirring with the addition of 2 wt.% aqueous ammonia without precipitation, and 37 wt.% 1ml formaldehyde and incubating for 2 hours to obtain reaction product. USE - Method for treat high fluorine content of domestic water (claimed). ADVANTAGE - The method enables to treat high fluorine content of domestic water, which is non-toxic to human body, is eco-friendly and prepared in a simple, safe and energy-saving manner. DETAILED DESCRIPTION - Treating high fluorine content of domestic water involves taking 20-30ml 2-6mmol/L graphene oxide, then adding with 3-5ml 10 mmol/L silver nitrate, and mixing under ultrasonication for 30 minutes to obtain mixture. The mixture is drop-wise added with 7 mol/L sodium hydroxide solution under magnetic stirring, then cooling, filtering and washing with water. The mixture is then drop-wise added with 0.05 M 3-5ml silver nitrate under stirring with the addition of 2 wt.% aqueous ammonia without precipitation, and 37 wt.% 1ml formaldehyde and incubating for 2 hours to obtain reaction product. The reaction product is poured into a centrifuge tube, then centrifuged under stirring speed of 8000 revolutions/minute for 5 minutes, then separated by incubating, and washed with water and alcohol for three times, and drying in oven at 80 degrees C for 3 hours to obtain desired product.