Scavenging activity and reaction mechanism of Ti3C2Tx MXene as a novel free radical scavenger. Issue 12 (15th June 2021)

• Record Type: Journal Article
• Authors: Qi, Zhaojun; Wang, Sen; Li, Yan; Wang, Lifeng; Zhao, Lin; Ge, Qiang; Zhang, Jin Zhong
• Is Part Of: Ceramics international. Volume 47:Issue 12(2021)
• Page Start: 16555
• Page End: 16561
• Publication Date: 2021-06-15
• Subjects: 2D materials -- Ti3C2Tx MXene -- Free radical scavenger -- Scavenging mechanism -- Scavenging activity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.02.226
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A novel free radical scavenger, multi-layered Ti3 C2 Tx MXene (ML-Ti3 C2 Tx ), has been studied by evaluating its scavenging activity against 2, 2-diphenyl-1-picrylhydrazyl (DPPH). It exhibits high scavenging efficiency (95% in 10 min) at low dosage (0.06 mg/mL). Based on the analysis of structure and surface states of ML-Ti3 C2 Tx before and after reaction with DPPH and a series of comparative experiments, including few-layered Ti3 C2 Tx MXene (FL-Ti3 C2 Tx ), original Ti3 AlC2, and soluble Ti species derived from ML-Ti3 C2 Tx, the observed high scavenging activity is attributed to the intrinsic reducing property of ML-Ti3 C2 Tx rather than the hydrogen donation ability from surface functional groups. A model is proposed to explain the scavenging mechanism.