Waste plastics derived nickel-palladium alloy filled carbon nanotubes for hydrogen evolution reaction

Senthilkumar Nangan; Thirumalaivasan Natesan; Wiwittawin Sukmas; Manunya Okhawilai; Kaliyamoorthy Justice Babu; Prutthipong Tsuppayakorn-Aek; Thiti Bovornratanaraks; Tawan Wongsalam; Vrince Vimal; Hiroshi Uyama; Abdullah M Al-Enizi; Lavish Kansal; Satbir S Sehgal

doi:10.1016/j.chemosphere.2023.139982

Waste plastics derived nickel-palladium alloy filled carbon nanotubes for hydrogen evolution reaction

Chemosphere. 2023 Nov:341:139982. doi: 10.1016/j.chemosphere.2023.139982. Epub 2023 Aug 28.

Affiliations

¹ Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand.
² Department of Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMTAS), Saveetha University, Chennai, 600077, Tamilnadu, India.
³ Metallurgy and Materials Science Research Institute, Chulalongkorn University, Bangkok, 10330, Thailand; Center of Excellence in Polymeric Materials for Medical Practice Devices, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand. Electronic address: Manunya.o@chula.ac.th.
⁴ Institute of Nano Science and Technology, Mohali, Punjab, 140306, India.
⁵ Extreme Conditions Physics Research Laboratory and Center of Excellence in Physics of Energy Materials (CE:PEM), Department of Physics, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
⁶ Computer Science and Engineering, Graphic Era Deemed to be University, Dehradun, 248002, India.
⁷ Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Osaka, 565-0871, Japan.
⁸ Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
⁹ School Electronics and Electrical Engineering, Lovely Professional University, Phagwara, Punjab, 144411, India.
¹⁰ Division of Research Innovation, Uttaranchal University, Dehradun, India.

PMID: 37648169
DOI: 10.1016/j.chemosphere.2023.139982

Abstract

Carbon nanotubes (CNTs) composed of bimetallic nickel-palladium (NiPd) nanoparticles encapsulated in graphitic carbon shells (NdPd@CNT) are prepared by the chemical vapour deposition method using waste polyethylene terephthalate (PET) plastic carbon sources and NiPd-decorated carbon sheets (NiPd@C) catalyst. The characterization results reveal that the face-centered cubic crystalline (fcc)-structured NiPd bimetallic alloy nanoparticles are encased by thin carbon nanotubes. The bimetallic synergism of NiPd nanoparticles actuates the outer CNT layers and accelerates the electrical conductivity, stimulating the electrochemical activity toward an effective hydrogen evolution reaction (HER). By virtue of the collective individualities of highly conductive aligned carbon walls and bimetallic active sites, the NiPd@CNT-equipped HER delivers a minimum overpotential of 87 mV and a Tafel slope value of 95 mV dec^-1. The existing intact contact between NiPd and CNT facilitates continuous electron and ion transportation and firm stability toward long-term hydrogen production in HER. Notably, the NiPd@CNT reported here produces excellent electrochemical activity with minimal charge transference resistance, substantiating the efficacy of NiPd@CNT for futuristic green hydrogen production.

Keywords: Alloys; Carbon nanotubes; Hydrogen evolution reaction; Hydrogen generation; Nickel palladium; Waste plastics.

MeSH terms

Gases
Hydrogen*
Nanotubes, Carbon*
Nickel
Palladium

Substances

Hydrogen
nickel-palladium alloy
Nickel
Palladium
Nanotubes, Carbon
Gases