Volume 137, Issue 30 e202504993
Forschungsartikel

Concurrent Production of Glycolic Acid via Anode Valorization of Plastic Paired With Cathode Upcycling of Biomass Derivative

Sailei Kang

Sailei Kang

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095 China

These authors contributed equally to this work.

Search for more papers by this author
Wenfang Yuan

Wenfang Yuan

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095 China

Songshan Lake Materials Laboratory, Guangdong, 523000 China

These authors contributed equally to this work.

Search for more papers by this author
Dr. Xuyun Guo

Dr. Xuyun Guo

School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin, D02PN40 Ireland

These authors contributed equally to this work.

Search for more papers by this author
Dr. Yu Zhang

Corresponding Author

Dr. Yu Zhang

College of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing, 211167 China

E-mail: [email protected], [email protected], [email protected]

Search for more papers by this author
Dr. Jian Shang

Dr. Jian Shang

Low-Dimensional Energy Materials Research Center, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055 China

Search for more papers by this author
Peinuo Yang

Peinuo Yang

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095 China

Search for more papers by this author
Yingxin Ma

Yingxin Ma

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095 China

Search for more papers by this author
Prof. Valeria Nicolosi

Prof. Valeria Nicolosi

School of Chemistry, Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN) and Advanced Materials Bio-Engineering Research Centre (AMBER), Trinity College Dublin, Dublin, D02PN40 Ireland

Search for more papers by this author
Dr. Lejuan Cai

Corresponding Author

Dr. Lejuan Cai

Songshan Lake Materials Laboratory, Guangdong, 523000 China

E-mail: [email protected], [email protected], [email protected]

Search for more papers by this author
Prof. Bocheng Qiu

Corresponding Author

Prof. Bocheng Qiu

Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing, 210095 China

E-mail: [email protected], [email protected], [email protected]

Search for more papers by this author
First published: 21 May 2025

Abstract

Electrochemical upcycling of polyethylene-terephthalate-derived (PET-derived) ethylene glycol (EG) into valuable chemicals, such as glycolic acid (GA), provides a sustainable route for reclaiming the carbon resource in plastic wastes. However, valorization of EG to GA is realized solely via anodic oxidation, which is typically accompanied by the generation of low-value hydrogen at the cathode. Here, we develop a GA production system that combines anodic and cathodic GA production via oxidation of PET-derived EG paired with reduction of biomass-derived oxalic acid, which is made possible by the discovery of a robust PdBi alloy anode and earth-abundant TiO2 cathode. Building on the theoretical understanding and experimental demonstration of anti-CO poisoning on the PdBi anode and temperature-dependent GA electrosynthesis on the TiO2 cathode, our integrated electrochemical system achieves a total Faradaic efficiency of 182% for GA production. This proof-of-concept electrochemical coupling strategy paves the way for high-efficiency utilization of surplus plastic-/biomass-derived feedstocks via renewable-electricity-driven electrocatalysis.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.