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Volume 6 Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212 Ceramics 2018
May 14-15, 2018
May 14-15, 2018 | Rome, Italy
4th International Conference and Expo on
Ceramics and Composite Materials
Composite materials from clays and clay mineral: Synthesis, characterization and electroanalytical
applications
Ignas K. Tonlé, Francis M. M. Tchieno, Ervice Ymélé, Sherman Z. Jiokeng and Emmanuel Ngameni
University of Dschang, Cameroon
S cientific research devoted to the exploitation of clays and clay minerals for the preparation of nanohybrid materials has
gained growing for the past decade. The resort to clays minerals as inorganic parent support for such materials is due to
their surface reactivity and ability to immobilize guest organic molecules, either within their structure or on their surface.
In fact, clay-based nanohybrid materials offer a wide range of applications in environmental protection, catalysis, polymer
science and in analytical electrochemistry. In the last mentioned application, the development of amperometric sensors useful
in the analysis and determination of various pollutants (e.g. heavy metals, dyes, pesticides) in natural media represents a
daily challenge. Yet, the inherent toxic character of these compounds, combined to the relative low degradation rate of some
of them and the non-biodegradable character of others made them persistent in living organisms where they participate in
metabolism processes, thereby inducing the monitoring and traceability of toxic pollutants is an ethic duty that concerns the
whole scientific community and challenges researchers working in several areas covering analytical chemistry, environmental
science, pollution control and chemistry of materials. In this communication, some typicalclay-based nanohybrid materials
exploited as electrode modifiers for preconcentration electroanalysis will be exposed.
Recent Publications
1. Kenne D G, Nguelo B B, Tonle I K, Ngameni E, Detellier C (2017) Molecular Control of the functional and spatial
interlayer environment of kaolinite by the grafting of selected pyridinium ionic liquids. Applied Clay Science 143: 445 –
451.
2. Jiokeng Z S L, Dongmo M L, Ymélé E, Ngameni E, Tonle I K (2017). Sensitive stripping voltammetry detection of Pb(II)
at a glassy carbon electrode modified with an amino-functionalized attapulgite. Sensors and Actuators: B. Chemical 242:
1027-1034.
3. Ngassa P G B, Tonle I K, Ngameni E (2016) Square wave voltammetric detection by direct electroreduction of
Paranitrophenol (PNP) using an organosmectite film-modified glassy carbon electrode. Talanta 147: 547-555.
4. Ngassa P G B, Tonle I K, Ngameni E (2016) Square wave voltammetric detection by direct electroreduction of
Paranitrophenol (PNP) using an organosmectite film-modified glassy carbon electrode. Talanta 147: 547-555.
5. Ngassa P G B, Tonle I K, Walcarius A, Ngameni E (2016) Inorganic-organic hybrid material from the co-intercalation
of a cationic surfactant and thiourea within montmorillonite layers. Application to the sensitive stripping voltammetric
detection of Pb2+ and Cu2+ ions. Comptes Rendus Chimie 19: 789-797.
Biography
Ignas Kenfack Tonle is Professor of Analytical Chemistry at the Department of Chemistry of the University of Dschang (Cameroon) where he leads a research group
working on the development of sensors and biosensors based on inorganic porous materials and lignocellulosic materials. In collaboration with the Electrochemistry and
Analytical Chemistry research group of Dr Alain Walcarius (University of Lorraine, Nancy- France), his PhD thesis was defended in 2004 at the University of Yaounde 1
(Cameron) under the supervision of Prof Emmanuel Ngameni. The research was focussed on the grafting of organosilanes onto the surface of smectite-type clay minerals,
followed by the application of the obtained organoclays as electrode materials in electroanalysis. In 2008, he moved to Prof Christian Detellier’s group (University of
Ottawa, Canada) for a one year postdoctoral position. Since 2013, he is a Georg Foster Senior Scientist Fellow to the ‘Elektroanalytik & Sensorik’ group headed by Prof
Dr Wolfgang Schuhmann at the Ruhr-Universität Bochum (Bochum, Germany).
Ignas K. Tonlé et al., Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C1-014