• 专利标题:   Preparing lanthanum modified graphene oxide hydrogel useful in removing phosphorus in sewage, comprises mixing the graphene oxide and lanthanum hydroxide in water uniformly, adding the mixed solution into the sodium alginate aqueous solution, and dripping.
  • 专利号:   CN115121230-A
  • 发明人:   DONG Y, DOU J, WANG S, LIU S, HUANG X, FAN F
  • 专利权人:   UNIV BEIJING NORMAL ZHUHAI
  • 国际专利分类:   B01J020/24, B01J020/28, B01J020/30, C02F001/28, C02F101/10
  • 专利详细信息:   CN115121230-A 30 Sep 2022 B01J-020/24 202201 Chinese
  • 申请详细信息:   CN115121230-A CN10795393 07 Jul 2022
  • 优先权号:   CN10795393

▎ 摘  要

NOVELTY - Preparing lanthanum modified graphene oxide hydrogel comprises (i) mixing the graphene oxide and lanthanum hydroxide in water uniformly to obtain the mixed solution, (ii) adding the mixed solution into the sodium alginate aqueous solution, and mixing uniformly to obtain the lanthanum-modified graphene oxide aqueous solution, and (iii) dripping the lanthanum-modified graphene oxide aqueous solution into the aqueous solution of the cross-linking agent for fully cross-linking to obtain the lanthanum-modified graphene oxide hydrogel, where in step (i), the mixing temperature is 65-85℃, and in step (ii), the mixing temperature is 40-50℃. USE - The lanthanum modified grapheme oxide hydrogel is useful in removing phosphorus in sewage (claimed). ADVANTAGE - The hydrogel formed by sodium alginate coats the graphene oxide loaded with lanthanum hydroxide, so that it can have good phosphorus adsorption effect in a wider pH range (pH is 3-10). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for lanthanum-modified graphene oxide hydrogel prepared by above-mentioned method.