Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials
A pristine graphite-based graphene oxide (GO) sample and GO-like samples prepared from anthracite, bituminous, and subbituminous coals were subjected to thermal reduction in a wide temperature range of 170–2800 °C to perform a comparative investigation on the physicochemical characteristics of coal-...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-08-01
|
| Series: | Carbon Trends |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667056925000616 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850145386621042688 |
|---|---|
| author | Sohan Bir Singh Seyed A. Dastgheib |
| author_facet | Sohan Bir Singh Seyed A. Dastgheib |
| author_sort | Sohan Bir Singh |
| collection | DOAJ |
| description | A pristine graphite-based graphene oxide (GO) sample and GO-like samples prepared from anthracite, bituminous, and subbituminous coals were subjected to thermal reduction in a wide temperature range of 170–2800 °C to perform a comparative investigation on the physicochemical characteristics of coal-based and graphite-based reduced graphene oxide (RGO) materials. X-ray photoelectron spectroscopy showed the surface composition of both graphite-based and coal-based RGO samples became more similar at 1000–2800 °C, in which the samples prepared at 1500 °C or above had >97 % carbon. Graphite-based and coal-based RGO samples exhibited increasing trends in the percentages of CC (for carbon-carbon groups) and CO (for carbon-oxygen groups) when prepared at higher temperatures. The Fourier transform infrared profiles showed a declining trend in the surface oxygen functionalities for the samples prepared from 170 °C to 600 °C, and no oxygen groups at 1000 °C. Raman spectra showed similar D and G bands for all samples below 1000 °C, but more distinctive 2D bands were observed above 2000 °C, which were sharper for the graphite- and anthracite-based samples. Surface area of all RGO samples were maximized at 1000 °C, then the porosity collapsed by two orders of magnitude at higher temperatures. The X-ray diffraction profiles showed sharper graphitic peaks for the samples prepared at higher temperatures, in which anthracite- and graphite-based samples prepared at 2400–2800 °C had characteristics similar to those of the synthetic graphite. Scanning electron microscopy of different coal-based RGO samples showed similar structures for anthracite-based and graphite-based samples. |
| format | Article |
| id | doaj-art-bc93465d45e040c0a8cf3a045bb6d7d9 |
| institution | OA Journals |
| issn | 2667-0569 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Trends |
| spelling | doaj-art-bc93465d45e040c0a8cf3a045bb6d7d92025-08-20T02:28:07ZengElsevierCarbon Trends2667-05692025-08-012010051110.1016/j.cartre.2025.100511Comparative characteristics of coal-based and graphite-based reduced graphene oxide materialsSohan Bir Singh0Seyed A. Dastgheib1Illinois State Geological Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, 615 East Peabody Drive, Champaign, IL 61820, United StatesCorresponding author.; Illinois State Geological Survey, Prairie Research Institute, University of Illinois Urbana-Champaign, 615 East Peabody Drive, Champaign, IL 61820, United StatesA pristine graphite-based graphene oxide (GO) sample and GO-like samples prepared from anthracite, bituminous, and subbituminous coals were subjected to thermal reduction in a wide temperature range of 170–2800 °C to perform a comparative investigation on the physicochemical characteristics of coal-based and graphite-based reduced graphene oxide (RGO) materials. X-ray photoelectron spectroscopy showed the surface composition of both graphite-based and coal-based RGO samples became more similar at 1000–2800 °C, in which the samples prepared at 1500 °C or above had >97 % carbon. Graphite-based and coal-based RGO samples exhibited increasing trends in the percentages of CC (for carbon-carbon groups) and CO (for carbon-oxygen groups) when prepared at higher temperatures. The Fourier transform infrared profiles showed a declining trend in the surface oxygen functionalities for the samples prepared from 170 °C to 600 °C, and no oxygen groups at 1000 °C. Raman spectra showed similar D and G bands for all samples below 1000 °C, but more distinctive 2D bands were observed above 2000 °C, which were sharper for the graphite- and anthracite-based samples. Surface area of all RGO samples were maximized at 1000 °C, then the porosity collapsed by two orders of magnitude at higher temperatures. The X-ray diffraction profiles showed sharper graphitic peaks for the samples prepared at higher temperatures, in which anthracite- and graphite-based samples prepared at 2400–2800 °C had characteristics similar to those of the synthetic graphite. Scanning electron microscopy of different coal-based RGO samples showed similar structures for anthracite-based and graphite-based samples.http://www.sciencedirect.com/science/article/pii/S2667056925000616Reduced graphene oxideCoalphysicochemical propertiesFunctional groupsSynthetic graphite |
| spellingShingle | Sohan Bir Singh Seyed A. Dastgheib Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials Carbon Trends Reduced graphene oxide Coal physicochemical properties Functional groups Synthetic graphite |
| title | Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials |
| title_full | Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials |
| title_fullStr | Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials |
| title_full_unstemmed | Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials |
| title_short | Comparative characteristics of coal-based and graphite-based reduced graphene oxide materials |
| title_sort | comparative characteristics of coal based and graphite based reduced graphene oxide materials |
| topic | Reduced graphene oxide Coal physicochemical properties Functional groups Synthetic graphite |
| url | http://www.sciencedirect.com/science/article/pii/S2667056925000616 |
| work_keys_str_mv | AT sohanbirsingh comparativecharacteristicsofcoalbasedandgraphitebasedreducedgrapheneoxidematerials AT seyedadastgheib comparativecharacteristicsofcoalbasedandgraphitebasedreducedgrapheneoxidematerials |