公开(公告)号：US20170142975A1

公开(公告)日：2017-05-25

申请号：US15327492

申请日：2015-07-17

Applicant: CELLUFORCE INC.

Inventor： Zengqian SHI ,  Juntao TANG ,  Kam Chiu TAM ,  Richard BERRY

IPC: A01N59/16 ,  B01J37/16 ,  B01J37/02 ,  A01N25/26 ,  B01J31/26

CPC classification number: A01N59/16 ,  A01N25/26 ,  B01J23/50 ,  B01J23/52 ,  B01J31/26 ,  B01J35/0013 ,  B01J35/002 ,  B01J37/0209 ,  B01J37/0244 ,  B01J37/16 ,  A01N25/10 ,  A01N25/12

Abstract: The present disclosure relates to use of polydopamine (PD) coated cellulose nanocrystals (CNCs) as template for further conjugation of functional oligomers (amines, carboxylic acids etc.) and the immobilization of various types of CNC hybrid nanomaterial nanoparticles to improve their stability in aqueous solution, e.g. the preparation of silver nanoparticle on CNC. Surface functionalization of CNC with polydopamine can be performed by mixing dopamine and CNCs for certain time at designed temperature. The resultant PD-CNCs can be used to stabilize metallic and inorganic nanoparticles, which could be generated in-situ, and further immobilized on the surface of PD coated CNCs. Benefiting from the improved stability, the resultant nanoparticles immobilized PD-CNC system also generally possess higher catalytic activity than the nanoparticles alone.