Study of the formation of amorphous carbon and rGO-like phases from palmyra sugar by variation of calcination temperature

Astuti, Fahmi; Sari, Novita; Maghfirohtuzzoimah, Vera Laviara; Baqiya, Malik Anjelh; Darminto, Darminto

doi:10.12962/j24604682.v16i2.6706

Cited by 5 publications

(2 citation statements)

References 19 publications

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“…The broadening in the peaks of the XRD diffractograms is an indication of the amorphous nature of the activated carbon. The position of the peak for ACOC (before and after adsorption) is observed at about 24°, and the result is identical to that obtained in previous studies [ 14 ]. An increase in the intensity of XRD peaks is observed after the adsorption of both dyes.…”

Section: Resultssupporting

confidence: 89%

Adsorption of Anionic and Cationic Dyes on Activated Carbon Prepared from Oak Cupules: Kinetics and Thermodynamics Studies

Alkhabbas

Al-Ma’abreh

Edris

et al. 2023

IJERPH

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In this study, activated carbon produced from oak cupules (ACOC) was prepared using chemical activation with H3PO4. ACOC is subsequently used as an adsorbent to facilitate the removal of an acidic dye, naphthol blue black (NBB), and basic dye crystal violet (CV) from aqueous solutions. The ACOC was characterized by FTIR spectroscopy, XRD, and SEM. The adsorption isotherm data fits well with the Langmuir model for NBB and CV. The kinetic models of adsorption of NBB and CV by ACOC were pseudo-first order and pseudo-second order, respectively. Thermodynamic parameters were evaluated and indicated that the adsorption of both dyes onto ACOC was endothermic and spontaneous. The adsorption capacity of ACOC reached 208 mg g−1 for NBB and 658 mg g−1 for CV. ACOC was shown to be a promising adsorbent for the removal of NBB and CV from aqueous solutions.

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Section: Resultssupporting

confidence: 89%

Adsorption of Anionic and Cationic Dyes on Activated Carbon Prepared from Oak Cupules: Kinetics and Thermodynamics Studies

Alkhabbas

Al-Ma’abreh

Edris

et al. 2023

IJERPH

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“…The XRD data are obtained by using CuKα radiation with(λ = 0.15406 Å , showing the broad peak for both samples, indicates that the phase is amorphous [9]. The differences in the range of 2𝜃 value from both raw materials is not that necessary, since the broad peak from the biomass materials is commonly observed around 15-45 o [9], [10], but we are using up to 60 o in order to check if maybe the material is showing another peak due to the impurity compounds that remain after the carbonization process. According to the coconut shell charcoal diffaction patterns, it shows two broad peaks located at 2𝜃~ 24 and 43 o , respectively, and those peaks are identic with the graphene peak; therefore, we can say this material as graphene-like carbon (GC) [11].…”

Section: Resultsmentioning

confidence: 99%

The Optical Energy Gap of the Semiconducting Intrinsic Layer for Organic Solar Cell Applications

Firdaus

Purwandari

Asih

et al. 2023

CERiMRE

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The optical energy gap of the semiconducting intrinsic layer plays a crucial role in determining the increase in efficiency. The carbon-based biomass can be a choice for the silicon used as solar cell material. Here, we proposed the best biomass that can be used as a semiconductor component in solar cell applications. Coconut shells as bio-waste and palmyra sap, which are available in most areas of Indonesia, can be the best candidates to be considered. The XRD measurement showed both organic materials have an amorphous phase. The coconut shells sample has two peaks that are identical to graphene peaks, therefore this material is called graphenic-like carbon (GC). Furthermore, from the UV-visible spectroscopy, it was shown that both materials have a high transmittance of more than 95%, which indicates that they have transparent properties. Also, the Tauc plot method gives information about the optical energy gap of coconut shell charcoal (GC) and palmyra sap (a:C) which are 2.67 and 1.83 eV, respectively. From this result, palmyra sap becomes promising material to be applied as an intrinsic layer for semiconducting components in solar cell applications.Keywords: Amorphous phase, Coconut shells charcoal, Optical energy gap, Palmyra sugar.

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Temperature influence on layered double hydroxide tailored corncob biochar and its application for fluoride removal in aqueous media

Hettithanthri¹,

Rajapaksha²,

Nanayakkara³

et al. 2023

Environmental Pollution

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Study of the formation of amorphous carbon and rGO-like phases from palmyra sugar by variation of calcination temperature

Cited by 5 publications

References 19 publications

Adsorption of Anionic and Cationic Dyes on Activated Carbon Prepared from Oak Cupules: Kinetics and Thermodynamics Studies

Adsorption of Anionic and Cationic Dyes on Activated Carbon Prepared from Oak Cupules: Kinetics and Thermodynamics Studies

The Optical Energy Gap of the Semiconducting Intrinsic Layer for Organic Solar Cell Applications

Temperature influence on layered double hydroxide tailored corncob biochar and its application for fluoride removal in aqueous media

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