Dual-Doped Nickel Sulfide for Electro-Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel.

Chen, Z; Zheng, R; Bao, T; Ma, T; Wei, W; Shen, Y; Ni, B-J

Dual-Doped Nickel Sulfide for Electro-Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel.

Chen, Z

Zheng, R Bao, T Ma, T Wei, W Shen, Y Ni, B-J

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Publisher:: SHANGHAI JIAO TONG UNIV PRESS
Publication Type:: Journal Article
Citation:: Nanomicro Lett, 2023, 15, (1), pp. 210
Issue Date:: 2023-09-11

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Field	Value	Language
dc.contributor.author	Chen, Z https://orcid.org/0000-0003-0627-0856
dc.contributor.author	Zheng, R
dc.contributor.author	Bao, T
dc.contributor.author	Ma, T
dc.contributor.author	Wei, W
dc.contributor.author	Shen, Y
dc.contributor.author	Ni, B-J
dc.date.accessioned	2023-11-12T22:02:02Z
dc.date.available	2023-08-10
dc.date.available	2023-11-12T22:02:02Z
dc.date.issued	2023-09-11
dc.identifier.citation	Nanomicro Lett, 2023, 15, (1), pp. 210
dc.identifier.issn	2311-6706
dc.identifier.issn	2150-5551
dc.identifier.uri	http://hdl.handle.net/10453/173351
dc.description.abstract	Electro-upcycling of plastic waste into value-added chemicals/fuels is an attractive and sustainable way for plastic waste management. Recently, electrocatalytically converting polyethylene terephthalate (PET) into formate and hydrogen has aroused great interest, while developing low-cost catalysts with high efficiency and selectivity for the central ethylene glycol (PET monomer) oxidation reaction (EGOR) remains a challenge. Herein, a high-performance nickel sulfide catalyst for plastic waste electro-upcycling is designed by a cobalt and chloride co-doping strategy. Benefiting from the interconnected ultrathin nanosheet architecture, dual dopants induced up-shifting d band centre and facilitated in situ structural reconstruction, the Co and Cl co-doped Ni3S2 (Co, Cl-NiS) outperforms the single-doped and undoped analogues for EGOR. The self-evolved sulfide@oxyhydroxide heterostructure catalyzes EG-to-formate conversion with high Faradic efficiency (> 92%) and selectivity (> 91%) at high current densities (> 400 mA cm-2). Besides producing formate, the bifunctional Co, Cl-NiS-assisted PET hydrolysate electrolyzer can achieve a high hydrogen production rate of 50.26 mmol h-1 in 2 M KOH, at 1.7 V. This study not only demonstrates a dual-doping strategy to engineer cost-effective bifunctional catalysts for electrochemical conversion processes, but also provides a green and sustainable way for plastic waste upcycling and simultaneous energy-saving hydrogen production.
dc.format	Electronic
dc.language	eng
dc.publisher	SHANGHAI JIAO TONG UNIV PRESS
dc.relation	http://purl.org/au-research/grants/arc/DP220101139
dc.relation	http://purl.org/au-research/grants/arc/DE220100530
dc.relation.ispartof	Nanomicro Lett
dc.relation.isbasedon	10.1007/s40820-023-01181-8
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	3403 Macromolecular and materials chemistry
dc.subject.classification	4016 Materials engineering
dc.subject.classification	4018 Nanotechnology
dc.title	Dual-Doped Nickel Sulfide for Electro-Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel.
dc.type	Journal Article
utslib.citation.volume	15
utslib.location.activity	Germany
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
dc.date.updated	2023-11-12T22:01:54Z
pubs.issue	1
pubs.publication-status	Published online
pubs.volume	15
utslib.citation.issue	1

Abstract:

Electro-upcycling of plastic waste into value-added chemicals/fuels is an attractive and sustainable way for plastic waste management. Recently, electrocatalytically converting polyethylene terephthalate (PET) into formate and hydrogen has aroused great interest, while developing low-cost catalysts with high efficiency and selectivity for the central ethylene glycol (PET monomer) oxidation reaction (EGOR) remains a challenge. Herein, a high-performance nickel sulfide catalyst for plastic waste electro-upcycling is designed by a cobalt and chloride co-doping strategy. Benefiting from the interconnected ultrathin nanosheet architecture, dual dopants induced up-shifting d band centre and facilitated in situ structural reconstruction, the Co and Cl co-doped Ni3S2 (Co, Cl-NiS) outperforms the single-doped and undoped analogues for EGOR. The self-evolved sulfide@oxyhydroxide heterostructure catalyzes EG-to-formate conversion with high Faradic efficiency (> 92%) and selectivity (> 91%) at high current densities (> 400 mA cm-2). Besides producing formate, the bifunctional Co, Cl-NiS-assisted PET hydrolysate electrolyzer can achieve a high hydrogen production rate of 50.26 mmol h-1 in 2 M KOH, at 1.7 V. This study not only demonstrates a dual-doping strategy to engineer cost-effective bifunctional catalysts for electrochemical conversion processes, but also provides a green and sustainable way for plastic waste upcycling and simultaneous energy-saving hydrogen production.

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http://hdl.handle.net/10453/173351