RT info:eu-repo/semantics/article
T1 On a composite obtained by thermolysis of Cu-doped glycine
A1 Chamorro Posada, Pedro
A1 Dante, Roberto C.
A1 Martín Gil, Jesús
A1 Dante, Denisse G.
A1 Cioci, Alma
A1 Vázquez Cabo, José
A1 Rubiños López, Óscar
A1 Mediavilla Martínez, Irene
A1 Martín Ramos, Pablo
K1 Copper
K1 Cobre
K1 X-ray spectroscopy
K1 Carbon
K1 Carbon composites
K1 Composite materials
K1 Materiales compuestos
K1 Thermal conductivity
K1 Thermolysis
K1 Calor
K1 Spectroscopy
K1 X-ray spectroscopy
K1 Electron microscopy
K1 Microscopia electrónica
K1 Materials science
K1 Analytical chemistry
K1 2202.01 Conductividad
K1 2209.21 Espectroscopia
K1 2301.20 Espectroscopia de Rayos X
K1 3312 Tecnología de Materiales
K1 2301 Química Analítica
AB Metal-doped carbonaceous materials have garnered significant attention in recent years due to their versatile applications in various fields, including catalysis, energy storage, environmental remediation, electronics, and sensors, as well as reinforcement. This study investigates the synthesis and characterization of a composite material featuring a carbonaceous matrix doped with copper, focusing on the thermolysis of glycine as a precursor. The synthesis methodology involved utilizing glycine and copper acetate monohydrate in varying ratios, with the mixture subjected to heating in ceramic crucibles at temperatures ranging from 450 to 550 °C, with pyrolysis yields over the 5 to 39% interval. The pristine and Cu-doped samples obtained at 500 °C underwent characterization using a diverse array of techniques, including scanning and transmission electron microscopies, multi-elemental analysis by energy dispersive X-ray spectroscopy, CHNS elemental analysis, X-ray photoelectron spectroscopy, X-ray powder diffraction, infrared and Raman spectroscopies, ultraviolet-visible spectroscopy, and terahertz time-domain spectroscopy, along with conductivity measurements. Under optimized conditions, copper (at 6.5%) was present primarily in the free metallic form, accompanied by traces of tenorite (CuO) and cuprite (Cu2O). The carbonaceous matrix exhibited a 6:1 ratio of graphitic carbon to a carbon-nitrogen compound with the formula C2H2N2O2, such as isomers of diazetidinedione, according to multi-elemental analysis results. Conductivity measurements disclosed a significant increase in conductivity compared to the product of glycine thermolysis, showcasing the enhanced electrical properties of the new composite. Additionally, terahertz measurements showed the potential of the material as a broadband absorber for the fabrication of terahertz devices and provided compelling evidence of a significant improvement in radiation absorption upon copper doping. In conclusion, this research sheds light on the promising properties of copper-doped carbonaceous composites obtained by glycine pyrolysis, offering insights into their potential applications in emerging technological domains.
PB MDPI
SN 2311-5629
YR 2024
FD 2024
LK https://uvadoc.uva.es/handle/10324/68167
UL https://uvadoc.uva.es/handle/10324/68167
LA eng
NO C-Journal of Carbon Research, 2024, Vol. 10, Nº. 2, 49
NO Producción Científica
DS UVaDOC
RD 30-jun-2024