BIBLIOS

Tipo
Artigos em Revista

Tipo de Documento
Artigo Completo

Título
In situ synthesis and modification of cotton fibers with bismuthoxychloride and titanium dioxide nanoparticles for photocatalytic applications

Participantes na publicação
Ferreira, Virginia C (Author)
Centro de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa
Dep. Química e Bioquímica
Dep. Química e Bioquímica
CQB
A.J. Goddard (Author)
O.C. Monteiro (Author)
Dep. Química e Bioquímica

Resumo
The successful attachment of semiconducting BiOCl and TiO2 nanoparticles to cotton fibers by in situ approaches is reported. The influence of the experimental conditions required for both Cotton-NPs preparation was investigated, namely the effect of the temperature required for TiO2 synthesis. A homogeneous, continuous and stable TiO2 layer, coating the fibers surface, was achieved, whereas BiOCl particles were found distributed on the fiber surface. The properties conferred upon NPs immobilization were evaluated considering morphological, structural and optical aspects as well as the photocatalytic ability granted by the nanoparticles, by means of microscopic and spectroscopic techniques (SEM, TEM, XRD and UV-vis). The functionalization with NPs conferred catalytic activity to the new materials, in the naphthol blue black (NBB) photodegradation, involving distinct oxidant species participation. The synthesis under mild conditions, at room temperature, the stability and the extended light absorption to the visible range of BiOCl when exposed to UV–vis light irradiation confers further advantage to the Cot-BiOCl sample as compared to the Cot-TiO2. However, the extended reusability of the Cot-TiO2 modified fibers imparts significant advantage to this material. Nevertheless, both modified fiber materials show promising potential applicability for photocatalysis and self-cleaning purposes.


Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Suporte
Journal of Photochemistry and Photobiology A: Chemistry

Identificadores da Publicação
ISSN - 1010-6030

Editora
Elsevier BV



Identificadores do Documento
URL - http://dx.doi.org/10.1016/j.jphotochem.2018.02.032
DOI - https://doi.org/10.1016/j.jphotochem.2018.02.032

Identificadores de Qualidade
SCOPUS Q1 (2016) - 0.749 - General Chemical Engineering
SCOPUS Q1 (2016) - 0.749 - General Chemistry

Keywords
Photocatalysis Titanium dioxide Bismuthoxychloride Semiconductor nanoparticles Pollutants removal

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