Surface characteristics and modification of different carbon materials
Апстракт
In this work, surface characteristics of different carbon materials were investigated. The materials under consideration were: activated carbon, carbon monolith, carbon felt and glassy carbon (powder, plate and broken plate). The surface functional groups of the studied carbon materials were determined by Boehms method and point of zero charge by mass titration. The specific surface area was studied by BET method with N-2 adsorption. As a specific test for surface activity, cementation of silver from aqueous solution of silver salts was used. The rate of silver deposition on the carbon materials was studied as a function of immersion time (AgNO3 concentration 75 mg/dm(3)), as well as a function of concentration of AgNO3 solution (25, 50, 75, 100, 125 mg/dm(3)) by atomic absorption spectrometry (AAS) to determine the concentration of Ag in the solution. The morphology of silver coatings was characterized by scanning electron microscopy (SEM) and structural characteristics by X-ray diffr...action. The results obtained show that metallic silver deposits were formed at the surface of all examined samples. Oxygen complexes at the surface of glassy carbon samples were analysed by temperature programmed desorption (TPD) before and after silver deposition in order to establish the mechanism of silver deposition.
Кључне речи:
carbon material / silver / surface propertiesИзвор:
Materials Science Forum, 2006, 518, 217-222Напомена:
- Recent Developments in Advanced Materials and Processes, 7th Conference of the Yugoslav-Materials-Research-Society (Yu-MRS), Sep 12-16, 2005, Herceg Novi, Montenegro
Колекције
Институција/група
VinčaTY - JOUR AU - Bacic-Vukcevic, M. AU - Udovičić, Ana AU - Laušević, Zoran AU - Perić-Grujić, Aleksandra A. AU - Lausevic, M. PY - 2006 UR - https://vinar.vin.bg.ac.rs/handle/123456789/6604 AB - In this work, surface characteristics of different carbon materials were investigated. The materials under consideration were: activated carbon, carbon monolith, carbon felt and glassy carbon (powder, plate and broken plate). The surface functional groups of the studied carbon materials were determined by Boehms method and point of zero charge by mass titration. The specific surface area was studied by BET method with N-2 adsorption. As a specific test for surface activity, cementation of silver from aqueous solution of silver salts was used. The rate of silver deposition on the carbon materials was studied as a function of immersion time (AgNO3 concentration 75 mg/dm(3)), as well as a function of concentration of AgNO3 solution (25, 50, 75, 100, 125 mg/dm(3)) by atomic absorption spectrometry (AAS) to determine the concentration of Ag in the solution. The morphology of silver coatings was characterized by scanning electron microscopy (SEM) and structural characteristics by X-ray diffraction. The results obtained show that metallic silver deposits were formed at the surface of all examined samples. Oxygen complexes at the surface of glassy carbon samples were analysed by temperature programmed desorption (TPD) before and after silver deposition in order to establish the mechanism of silver deposition. T2 - Materials Science Forum T1 - Surface characteristics and modification of different carbon materials VL - 518 SP - 217 EP - 222 UR - https://hdl.handle.net/21.15107/rcub_vinar_6604 ER -
@article{ author = "Bacic-Vukcevic, M. and Udovičić, Ana and Laušević, Zoran and Perić-Grujić, Aleksandra A. and Lausevic, M.", year = "2006", abstract = "In this work, surface characteristics of different carbon materials were investigated. The materials under consideration were: activated carbon, carbon monolith, carbon felt and glassy carbon (powder, plate and broken plate). The surface functional groups of the studied carbon materials were determined by Boehms method and point of zero charge by mass titration. The specific surface area was studied by BET method with N-2 adsorption. As a specific test for surface activity, cementation of silver from aqueous solution of silver salts was used. The rate of silver deposition on the carbon materials was studied as a function of immersion time (AgNO3 concentration 75 mg/dm(3)), as well as a function of concentration of AgNO3 solution (25, 50, 75, 100, 125 mg/dm(3)) by atomic absorption spectrometry (AAS) to determine the concentration of Ag in the solution. The morphology of silver coatings was characterized by scanning electron microscopy (SEM) and structural characteristics by X-ray diffraction. The results obtained show that metallic silver deposits were formed at the surface of all examined samples. Oxygen complexes at the surface of glassy carbon samples were analysed by temperature programmed desorption (TPD) before and after silver deposition in order to establish the mechanism of silver deposition.", journal = "Materials Science Forum", title = "Surface characteristics and modification of different carbon materials", volume = "518", pages = "217-222", url = "https://hdl.handle.net/21.15107/rcub_vinar_6604" }
Bacic-Vukcevic, M., Udovičić, A., Laušević, Z., Perić-Grujić, A. A.,& Lausevic, M.. (2006). Surface characteristics and modification of different carbon materials. in Materials Science Forum, 518, 217-222. https://hdl.handle.net/21.15107/rcub_vinar_6604
Bacic-Vukcevic M, Udovičić A, Laušević Z, Perić-Grujić AA, Lausevic M. Surface characteristics and modification of different carbon materials. in Materials Science Forum. 2006;518:217-222. https://hdl.handle.net/21.15107/rcub_vinar_6604 .
Bacic-Vukcevic, M., Udovičić, Ana, Laušević, Zoran, Perić-Grujić, Aleksandra A., Lausevic, M., "Surface characteristics and modification of different carbon materials" in Materials Science Forum, 518 (2006):217-222, https://hdl.handle.net/21.15107/rcub_vinar_6604 .