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Synthesis of calcium carbonate in alkali solution based on graphene oxide and reduced graphene oxide
Yaseen, Sarah Abduljabbar; Yiseen, Ghadah Abdaljabar; Li, Zongjin
2018-06
Source PublicationJOURNAL OF SOLID STATE CHEMISTRY
ISSN0022-4596
Volume262Pages:127-134
AbstractThis paper reports a new approach of producing CaCO3 particles in alkali solution. CaCO3 particles with pure calcite structure were obtained from the reaction of water-dispersed graphene oxide (GO) or reduced graphene oxide (rGO) with either Ca(OH)(2) or CaO. In Fourier Transform Infrared (FTIR) spectra, the pure calcite structure was demonstrated by fundamental bands at 1425 (v3), 873 (v2), and 712 cm(-1) (v4). The Raman spectra showed the characteristic peak of calcite structure at 1085 cm(-1) (v1). X-ray diffraction pattern (XRD) and X-ray photoelectron spectroscopy (XPS) analyses further confirmed that only the pure calcite phase of CaCO3 was formed in both synthesis approaches. Scanning electron microscopy (SEM), Energy dispersive X-ray analyzer (EDX), and High-resolution transmission electron microscopy (HRTEM) also confirmed that distorted cubic and rhombic calcite particles were obtained with GO, while the pine flower-like and flower-like particles were obtained with rGO, and the average crystallite sizes varied from 26 to 44 nm. The mechanism of the reaction was investigated and it was found that the decomposition of oxygen functional groups on the surface of GO or rGO in certain alkaline media to release CO, CO2, and water was a key process as the released CO2 further reacted with OH- and Ca2+ to form CaCO3. This demonstrated that both GO and rGO could be used as main reactants for the synthesis of calcite.
KeywordGraphene oxide (GO) Reduced graphene oxide (rGO) Calcite phase Calcium carbonate
DOI10.1016/j.jssc.2018.03.005
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Inorganic & Nuclear ; Chemistry, Physical
WOS IDWOS:000431387500017
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
The Source to ArticleWOS
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
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GB/T 7714
Yaseen, Sarah Abduljabbar,Yiseen, Ghadah Abdaljabar,Li, Zongjin. Synthesis of calcium carbonate in alkali solution based on graphene oxide and reduced graphene oxide[J]. JOURNAL OF SOLID STATE CHEMISTRY,2018,262:127-134.
APA Yaseen, Sarah Abduljabbar,Yiseen, Ghadah Abdaljabar,&Li, Zongjin.(2018).Synthesis of calcium carbonate in alkali solution based on graphene oxide and reduced graphene oxide.JOURNAL OF SOLID STATE CHEMISTRY,262,127-134.
MLA Yaseen, Sarah Abduljabbar,et al."Synthesis of calcium carbonate in alkali solution based on graphene oxide and reduced graphene oxide".JOURNAL OF SOLID STATE CHEMISTRY 262(2018):127-134.
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