Ti4+-dopamine/sodium alginate multicomponent complex derived N-doped TiO2@carbon nanocomposites for efficient removal of methylene blue.
Int J Biol Macromol
; 243: 125200, 2023 Jul 15.
Article
em En
| MEDLINE
| ID: mdl-37271270
ABSTRACT
A one-pot route for the preparation of TiO2@carbon nanocomposite from Ti4+/polysaccharide coordination complex has been developed and shown advantages in operation, cost, environment, etc. However, the photodegradation rate of methylene blue (MB) needs to be improved. N-doping has been proven as an efficient means to enhance photodegradation performance. Thus, the present study upgraded the TiO2@carbon nanocomposite to N-doped TiO2@carbon nanocomposite (N-TiO2@C) from Ti4+-dopamine/sodium alginate multicomponent complex. The composites were characterized by FT-IR, XRD, XPS, UV-vis DRS, TG-DTA, and SEM-EDS. The obtained TiO2 was a typical rutile phase, and the carboxyl groups existed on N-TiO2@C. The photocatalyst consequently showed high removal efficiency of MB. The cycling experiment additionally indicated the high stability of N-TiO2@C. The present work provided a novel route for preparing N-TiO2@C. Moreover, it can be extended to prepare N-doped polyvalent metal oxides@carbon composites from all water-soluble polysaccharides such as cellulose derivatives, starch, and guar gum.
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Base de dados:
MEDLINE
Assunto principal:
Carbono
/
Nanocompostos
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article