Study of the interaction between low density polyethylene and TiO2 in different environments. Influence of the presence and absence of radiation, and of the atmosphere (O2, N2 or Ar)

In the process of photocatalytic degradation of plastics, the surface interaction between the plastic material and the photocatalyst results crucial. The present work focuses on using a specific TiO2 photocatalytic semiconductor whose hierarchical structure favours the interaction with low density p...

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Detalhes bibliográficos
Autores: Castellanos-Aliaga, Ana, San-Miguel, Laura, Villegas, Marina, Caballero Cuesta, Ángel, Peiteado, Marco, Calatayud, David G.
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2024
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/381759
Acesso em linha:http://hdl.handle.net/10261/381759
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85206932384&doi=10.1016%2fj.bsecv.2024.09.005&partnerID=40&md5=2f415fdf6e65f94a264068e98d489a7c
Access Level:Acceso aberto
Palavra-chave:Catalysis
Degradation of plastics
LDPE
Photocatalysis
TiO2
Descrição
Resumo:In the process of photocatalytic degradation of plastics, the surface interaction between the plastic material and the photocatalyst results crucial. The present work focuses on using a specific TiO2 photocatalytic semiconductor whose hierarchical structure favours the interaction with low density polyethylene (LDPE), a key component in plastics. An exhaustive study of the nature of this interaction is conducted, analysing the influence of the atmosphere and radiation. The results obtained indicate that the observed interaction can be modulated by controlling the atmosphere, evolving into a degradation process whose mechanism also depends on the absence or the presence of light. This point is particularly relevant as it highlights the dual nature of TiO2 as both photocatalyst and catalyst. © 2024 The Author(s)