• 专利标题:   Synthesis of nitrogen-doped graphene aerogel for electric absorption of heavy metal zinc ion in wastewater, by mixing graphene oxide in deionized water, subjecting to ultrasonic dispersion, adding urea, and mechanical stirring.
  • 专利号:   CN106145284-A
  • 发明人:   WEI Y, XU L, KONG Y, ZHAO W
  • 专利权人:   UNIV CHANGZHOU
  • 国际专利分类:   C01B031/04, C02F001/469, C02F101/20
  • 专利详细信息:   CN106145284-A 23 Nov 2016 C02F-001/469 201717 Pages: 7 Chinese
  • 申请详细信息:   CN106145284-A CN10490169 28 Jun 2016
  • 优先权号:   CN10490169

▎ 摘  要

NOVELTY - Nitrogen-doped graphene aerogel is synthesized by mixing graphene oxide in deionized water, subjecting to ultrasonic dispersion for 10-30 minutes, adding urea, mechanical stirring for 15 minutes, subjecting to hydrothermal reaction in a muffle furnace controlled at 180 degrees C for 12 hours, immersing in distilled water for 2-3 days, freeze-drying, adding polyvinyl alcohol solution, stirring, and coating obtained paste on a paper electrode. USE - Method of synthesizing nitrogen-doped graphene aerogel for electric absorption of heavy metal zinc ion in wastewater. ADVANTAGE - The method is simple, fast and environment friendly, and obtains aerogel having high adsorption efficiency. DETAILED DESCRIPTION - Nitrogen-doped graphene aerogel is synthesized by mixing graphene oxide in deionized water, subjecting to ultrasonic dispersion for 10-30 minutes, adding urea, mechanical stirring for 15 minutes, subjecting to hydrothermal reaction in a muffle furnace controlled at 180 degrees C for 10-12 hours, immersing in distilled water for 2-3 days, freeze-drying, adding polyvinyl alcohol solution, stirring, coating obtained paste on a paper electrode, placing the nitrogen-doped graphene aerogel paper electrode in a heavy metal ion solution, performing metal absorption using paper electrode as working electrode, platinum electrode as counter electrode and calomel electrode as reference electrode, performing conductivity meter real-time monitoring where nitrogen-doped graphene aerogel paper electrode absorption reaches balance when the conductivity is unchanged, and desorbing and regenerating the used electrode.