期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 147, 期 3, 页码 1049-1057出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.06.058
关键词
Composite materials; Sol-gel growth; Surface properties; Electrochemical properties
资金
- Polish National Centre of Science funds [DEC-2013/09/B/ST8/00159]
Synthesis and characterisation of silica/lignin materials is described. Silica was synthesised by the modified Stober method and its surface was functionalised with aminosilane. The organic matrix was the activated Kraft lignin (KL). The materials obtained were subjected to thorough characterisation (physicochemical, dispersive, morphological and electrochemical) by the NIBS, SEM, FT-IR, and XPS methods. Results of the characterisation permitted evaluation of the application possibilities of the products and the choice of the best ones for specific applications. Because of high negative ionic charge the material particles could be effectively deposited on positively polarised glassy carbon electrode by electrophoretic deposition. The silica/lignin modified electrode showed enhanced charge transfer resistance for anionic redox probe (ferrocyanide/ferricyanide couple) and an enhanced capability to the adsorption of silver cations. The latter property could be exploited in anodic striping voltammetry of silver. (C) 2014 Elsevier B.V. All rights reserved.
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