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Title: Coupling of PET waste electroreforming with green hydrogen generation using bifunctional catalyst
Authors: Li, Ying
Lee, Li Quan
Yu, Zhi Gen
Zhao, Hu
Zhang, Yong-Wei
Gao, Pingqi
Li, Hong
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Li, Y., Lee, L. Q., Yu, Z. G., Zhao, H., Zhang, Y., Gao, P. & Li, H. (2022). Coupling of PET waste electroreforming with green hydrogen generation using bifunctional catalyst. Sustainable Energy and Fuels, 6(21), 4916-4924.
Project: NTU-ACE2021-02
Journal: Sustainable Energy and Fuels
Abstract: Cost-effective and high-efficiency bifunctional electrocatalysts for electrooxidation of polyethylene terephthalate (PET) waste and green hydrogen generation are very crucial for practical implementation yet rarely reported. Herein, a bifunctional catalyst of cobalt modified nickel phosphide nanosheet arrays on nickel foam (Co-Ni2P/NF) for both PET hydrolysate oxidation reaction and hydrogen evolution reaction (HER) is reported, which is obtained by a facile hydrothermal and phosphidation treatment. The electrocatalyst is highly active for both PET hydrolysate oxidation reaction and HER with low overpotentials of 90 and 148 mV, respectively, to achieve a current density of 50 mA cm−2. By coupling PET hydrolysate oxidation reaction with HER, the assembled electrolyzer with Co-Ni2P/NF as a bifunctional catalyst only requires 1.43 V to afford 10 mA cm−2, much lower than that needed for pure water splitting (1.55 V). Complementary DFT study provides an in-depth understanding of HER and electrooxidation of PET on Co-Ni2P/NF. Our work suggests that electroreforming of abundant PET waste could be an energy-efficient and sustainable strategy for both plastic waste valorization and green hydrogen production via using a cost-effective and active bifunctional catalyst.
ISSN: 2398-4902
DOI: 10.1039/d2se01007k
Schools: School of Mechanical and Aerospace Engineering 
Rights: © The Royal Society of Chemistry 2022. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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