• 专利标题:   Preparation of graphene synergistic sol used for improving soil quality, involves adding flake graphite into mixed acid solution, adding intercalation agent, reacting, and ultrasonically dispersing to obtain graphene, adding dispersant, organic bentonite, and ultrasonically treating.
  • 专利号:   CN115215332-A
  • 发明人:   ZHANG J, ZHANG F, ZHENG B
  • 专利权人:   XIAMEN FUHUA TECHNOLOGY CO LTD
  • 国际专利分类:   C01B032/19, C01B032/194, C09K101/00, C09K017/02
  • 专利详细信息:   CN115215332-A 21 Oct 2022 C01B-032/19 202308 Chinese
  • 申请详细信息:   CN115215332-A CN10848115 19 Jul 2022
  • 优先权号:   CN10848115

▎ 摘  要

NOVELTY - Preparation of graphene synergistic sol involves (s1) adding flake graphite into mixed acid solution, soaking for 3-4 hours, (s2) adding 5-8 g/L intercalation agent to the mixed acid solution, reacting at 45-55°C for 4-6 hours, washing until the pH is 4.6-5.3, ultrasonically dispersing for 1-2 hours, drying at 100°C to obtain graphene oxide, (s3) putting graphene oxide in the reducing solution, reacting for 2-3 hours to obtain graphene, and (s4) adding 300-400 g/L graphene in dispersing solution, adding 2-3 g/L dispersant, 8-12 g/L organic bentonite, and ultrasonically treating for 30-40 minutes to obtain graphene synergistic sol. In step (s2), the intercalation agent comprises phosphoric anhydride, acetic acid, and sodium bicarbonate in a mass ratio of 1:0.4-0.6:2-3. The dispersant comprises fatty acid polyethylene glycol ether and polyacrylamide in a mass ratio of 1:0.56-0.65. USE - Preparation of graphene synergistic sol used for improving soil quality. ADVANTAGE - The prepared graphene synergistic sol has strong adsorption capacity, enhances the long-term preservation of nutrients by soil and controlling the loss of nutrient volatilization on the ground and deep seepage.