Proteins Induced Formation of Hydrothermal Nitrogen Doped Carbons
- PDF / 468,319 Bytes
- 6 Pages / 612 x 792 pts (letter) Page_size
- 12 Downloads / 144 Views
1219-AA04-05
Proteins Induced Formation of Hydrothermal Nitrogen Doped Carbons Niki Baccile*1, and Maria-Magdalena Titirici 2 1
Laboratoire de Chimie de la Matière Condensée de Paris, CNRS UPMC Université Pierre et Marie Curie, Collège de France, 75005, Paris France. 2 Max Planck Institute for Colloids and Interfaces, Golm-Potsdam, Germany
ABSTRACT This contribution illustrates the synthesis of nitrogen-containing hydrothermal carbon particles from a mixture of glucose, as carbon source, and different types of proteins, as nitrogen sources. Casein, ovalbumin, hemoglobin and gelatin were chosen here as model compounds. The particle size and the level of structural order could be tuned according to the protein type and the amount utilized. INTRODUCTION Presently, carbon-based nanostructures represent an important class of materials with a wide range of applications in modern materials science. The literature today presents numerous synthetic pathways for the production of such carbons. [1,2,3,4] One important class of nanocarbons ranging from nanoparticulate soots and fullerenes to nanotubes are produced via energy-consuming methods such as arc discharge, laser ablation or Chemical Vapor Deposition (CVD),[5] whereas printing soots are still made by incomplete combustion of natural gas, being an element and energy inefficient process.[6,7] Another method for the production of such materials is the nanocasting process where a mesoporous template is infiltrated with the carbon precursor followed by carbonization at high temperatures (100°C) within the pores and etching of the initial template, leaving behind a carbon replica [8,9] Currently, there is a strong need to balance the energy consumption for the production of useful materials which in turn should lead to the production of new forms of fuels. Carbon materials and especially carbon nanocomposites can contribute to the generation of such renewable energy sources if they are synthesized under more sustainable conditions [10]. Therefore, the search for new and sustainable strategies to generate carbon materials, carbon hybrids and related materials is of major importance in material chemistry today. Looking at literature data, it is somehow curious that, excluding activated carbons, not many of such materials are produced from natural and wide spread waste resources such as biomass. Even activated carbons are generally synthesized from raw biomass under rather harsh conditions, involving relatively high temperatures (600-900°C), pressures and oxidizing atmospheres (O2, CO2, steam) or chemical treatment with acids (e.g., phosphoric acid), bases (e.g., KOH, NaOH) or salts (ZnCl2). Thus, the hydrothermal carbonization technique (HT) of biomass or biomass-derived precursors between 180°C and 220°C provides carbon-based nanopowders [11], nanofibers [12], or sponge-like mesoporous carbons being potentially useful as soil conditioner, ion exchange resins or sorption coals [13]. The synthesis proved to be feasible both for simple systems such as
pure carbohydrates (glu
Data Loading...
