• 专利标题:   Composite adsorbent material for removing arsenic in water, comprises hydrated zirconia and graphene oxide, where the HZO is loaded onto surface of GO through hydrogen bonding and oxygen vacancy repair to form composite adsorption material.
  • 专利号:   CN114797771-A
  • 发明人:   CHEN H, OU H, TAN P, XIN Y
  • 专利权人:   GUANGDONG XINTAILONG ENVIRONMENTAL PROTE
  • 国际专利分类:   B01J020/20, B01J020/30, B01J020/34, C02F001/28, C02F101/10
  • 专利详细信息:   CN114797771-A 29 Jul 2022 B01J-020/20 202282 Chinese
  • 申请详细信息:   CN114797771-A CN10359543 07 Apr 2022
  • 优先权号:   CN10359543

▎ 摘  要

NOVELTY - Composite adsorbent material comprises hydrated zirconia (HZO) and graphene oxide (GO), where the HZO is loaded onto the surface of GO through hydrogen bonding and oxygen vacancy repair to form a composite adsorption material. The hydrogen bond of GO to arsenic in the composite adsorption material strengthens the inner layer complexing ability of HZO to arsenic, thereby realizing the efficient removal of arsenic. USE - Composite adsorbent material for removing arsenic in water. ADVANTAGE - The HZO/GO composite has a good regeneration ability for arsenic, and its adsorption capacity is only slightly reduced after multiple cycles, so it has a high application prospect and promotion value. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing the composite adsorbent material, comprising (a) adding 95% H2SO4 to a flask at ice temperature (0-5°C) with graphite and NaNO3 to form a suspension, slowly adding KMnO4 to the suspension under continuous stirring, continuously stirring for 12 hours, and controlling the stirring temperature at 25°C, (b) adding deionized water to the mixed solution obtained in step (a) in two steps, and slowly adding ionized water to the mixed solution for the first time, when adding ionized water for the second time, diluting the mixture, adding H2O2 solution, stirring for 0.5 hours, centrifuging the mixture to obtain centrifuged precipitate, washing multiple times with 5% HCl solution to remove metal ions, washing with deionized water for multiple times until neutral, and finally placing the centrifuged precipitate in a freeze-drying box to dry to obtain GO, and (c) placing the GO obtained in step (b) in deionized water to form a GO dispersion by ultrasonication, adding Zr4+ solution to stir, adding the obtained GO and Zr mixed solution into the autoclave to react, repeatedly washing the reaction product with deionized water until neutral, and finally drying in a freeze drying oven.