Efficient upcycling electroplating sludge and waste PET into Ni-MOF nanocrystals for the effective photoreduction of CO2. Issue 2 (13th January 2021)

• Record Type: Journal Article
• Authors: Song, Kainan; Qiu, Xiaoqing; Han, Bin; Liang, Shujie; Lin, Zhang
• Is Part Of: Environmental science. Volume 8:Issue 2(2021)
• Page Start: 390
• Page End: 398
• Publication Date: 2021-01-13
• Subjects: Environmental sciences -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/d0en01061h
• Languages: English
• ISSNs: 2051-8153

Abstract

Abstract : Simultaneously the upcycling of electroplating sludge and waste PET into Ni-MOF nanocrystals show superior activities towards the photoreduction of CO2 . Abstract : Upcycling the electroplating sludge (EPS) and PET waste into metal–organic-frameworks (MOFs) is beneficial for both pollution mitigation and sustainable economy. Herein, we report a green synthesis of Ni-MOF nanocrystals by simultaneously using EPS and PET waste as precursors without any precedent. In particular, when EPS was fully utilized, with numerous Fe 3+ /Cu 2+ ions coexisting with Ni 2+ ions, the desired Ni-MOFs could still be successfully fabricated. The Ni-MOF nanocatalysts exhibited an excellent activity towards the photoreduction of CO2, giving 9.68 × 10 3 μmol h −1 g −1 of CO with 96.7% selectivity over H2 evolution. Additionally, the apparent quantum yield at 420 nm is 1.36%, which is superior to that of most catalysts in similar systems. This study clearly suggests that the MOF nanocrystals with excellent photocatalytic performances could be successfully fabricated from solid wastes.