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1. (WO2018107212) GRAPHENE FOR FERTILIZER APPLICATIONS

Pub. No.:    WO/2018/107212    International Application No.:    PCT/AU2017/051362
Publication Date: Fri Jun 22 01:59:59 CEST 2018 International Filing Date: Tue Dec 12 00:59:59 CET 2017
IPC: C05G 3/00
C01B 32/182
C01B 32/198
Applicants: THE UNIVERSITY OF ADELAIDE
Inventors: LOSIC, Dusan
KABIRI, Shervin
MCLAUGHLIN, Michael
TRAN, Diana
ANDELKOVIC, Ivan
Title: GRAPHENE FOR FERTILIZER APPLICATIONS
Abstract:
A new slow-release fertiliser is described comprising a graphene support (such as graphene or graphene oxide (GO)) and a fertiliser material, wherein the fertiliser material may be a primary nutrient, macronutrient or micronutrient, such as copper (Cu) and zinc (Zn), in which the nutrients are efficiently bonded with the functional groups at the surface and sides of the GO sheets due to their affinity to the unpaired oxygen atoms in the GO. The prepared Cu-graphene oxide (Cu-GO) and Zn-graphene oxide (Zn-GO) fertilizers showed a biphasic dissolution behaviour compared to commercial zinc sulphate (ZnS04) and copper sulphate (CuS04) fertilizer granules, displaying both fast- and slow-release micronutrient release. The present invention also relates to a co- granulated fertiliser composition comprising a fertiliser material co-granulated with a graphene, graphene oxide or a mixture thereof.