Robust shape-retaining nanocellulose-based aerogels decorated with silver nanoparticles for fast continuous catalytic discoloration of organic dyes

Weihua Zhang, Xiaoju Wang, Yongchao Zhang, Bas van Bochove, Ermei Mäkilä, Jukka Seppälä, Chunlin Xu, Stefan Willför, Wen Yang Xu

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

Sammanfattning

In this work we present a green method to prepare aerogel membranes based on cellulose nanofibers (CNFs) crossed-linked with poly (ethylene imine) (PEI) and further decorated with silver nanoparticles (Ag NPs). The nanosized Ag NPs were reduced and immobilized on the surface of the pore walls inside the aerogel. The as-prepared composite aerogel membrane showed excellent continuous catalytic discoloration of aqueous cationic and anionic dye solutions in batch and flow filtration tests. Moreover, the aerogel membrane exhibited very stable catalytic activity with discoloration efficiency at as high as 98% after 10 times reuse and the water permeance was high, up to 5 × 104 L·m−2 h−1. Interestingly, the aerogel membrane showed excellent shape recovery in water and no obvious deterioration of the structure was observed during long time testing. Therefore, the obtained aerogel membranes showed great potential in waste water treatment and catalytic applications.

OriginalspråkEngelska
Sidor (från-till)
TidskriftSeparation and Purification Technology
Volym242
DOI
StatusPublicerad - 24 mar 2020
MoE-publikationstypA1 Tidskriftsartikel-refererad

Fingeravtryck Fördjupa i forskningsämnen för ”Robust shape-retaining nanocellulose-based aerogels decorated with silver nanoparticles for fast continuous catalytic discoloration of organic dyes”. Tillsammans bildar de ett unikt fingeravtryck.

Citera det här