Thermal decomposition of a layered double hydroxide as a bottom up approach for the synthesis of metallic nanoparticles embedded in carbon structures

Author(s)

de Matos, Caroline Silva ^[1] ; Ghimbeu, Camelia Matei ^{[2, 3]} ; Brendle, Jocelyne ^{[2, 3]} ; Limousy, Lionel ^{[2, 3]} ; Constantino, Vera Regina Leopoldo ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Haute Alsace, Inst Sci Mat Mulhouse, CNRS UMR 7361, 15 Rue Jean Starcky, F-68057 Mulhouse - France

^[3] Univ Strasbourg, F-67000 Strasbourg - France

• Document type: Journal article
• Source: NEW JOURNAL OF CHEMISTRY; v. 44, n. 39, p. 16721-16732, OCT 21 2020.
• Web of Science Citations: 0

Abstract

In the present study, the thermal behaviour of a layered double hydroxide (LDH) intercalated with a carboxymethylcellulose (CMC) polymer was evaluated to inspect the effect of the temperature on the chemical processes that occur during its decomposition under a nitrogen atmosphere, ranging from 500 to 1000 degrees C, as well as the product properties. The intercalation compound (LDH-CMC) proved to be a suitable precursor to develop inorganic nanocomposites based on Ni metallic nanoparticles (Ni-MNPs) embedded in a carbonaceous matrix by a bottom-up strategy involving a carbothermal reaction. Considering the temperature effect on the LDH-CMC decomposition processes, as well as the dispersion of metallic and carbon sources at the nanoscale level favoured by the intercalated structure, the simple synthetic approach reported in this work permits fine tuning of the production of valuable phases. The nanocomposites with ordered carbonaceous structures and transition metallic nanoparticles are interesting functional materials for electrocatalysis. (AU)

• FAPESP's process: 18/15201-5 - Nanocomposites obtained from Ni-based layered double hydroxides pyrolysis: structural characterization and properties investigation
• Grantee: Caroline Silva de Matos
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
• FAPESP's process: 14/04816-8 - Development of hierarchical structures with nanoarchitectures based on inorganic layered units
• Grantee: Caroline Silva de Matos
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 11/50318-1 - Development of compounds with pharmacological or medicinal interest and of systems for their transport, detection and recognition in biological media
• Grantee: Ana Maria da Costa Ferreira
• Support Opportunities: Research Projects - Thematic Grants