Article Per Year (5 Year)
p-Index From 2020 - 2025
0.444
P-Index
This Author published in this journals
All Journal Jurnal Kimia Riset Journal of Environmental Science and Sustainable Development
Faradis, Royyan
Unknown Affiliation
Humanities Chemistry Energy Environmental Science Social Sciences

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
CONVERSION OF CELLULOSE TO 5-HYDROXYMETHYLFURFURAL AS SUSTAINABLE ENERGY: A BIBLIOMETRIC ANALYSIS BY VOSVIEWER Faradis, Royyan; Suryanto, Ardiansyah Bagus; Murwani, Irmina Kris
Journal of Environmental Science and Sustainable Development Vol. 6, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The developments of the global economy and society impact resources and the environment. This condition requires an alternative to find new, safe, and sustainable energy types. The conversion of cellulose to 5-hydroxymethylfurfural (5-HMF) has become a significant area of research interest. It has triggered the development of research directions related to biomass and energy because it can be an intermediary source for making polymers, solvents, pharmaceuticals, and biofuels. The primary objective of this study is to give a bibliometric analysis of 1753 reports on the development of research on cellulose conversion to 5-HMF from 1965 to 2021. The data were gathered from the Scopus database using the keywords “conversion of cellulose” and “5-HMF”, and they were then subject to content and bibliometric analysis. VOSviewer is a software used for data analysis that can visualize the linkages and map the outcomes of particular study objects. The results show increased annual publications in the last five years with cross-disciplinary collaborations in scientific fields. In terms of publications, the United States tops other nations (550 documents), whereas Indonesia is rated 34th (15 documents). Based on VOSviewer analysis, the overlay visualization of research trends by year shows that the keyword of the process of converting cellulose to 5-HMF is a relatively recent study topic compared to other cellulose topics. By identifying specific suggestions and strategies for the development and utilization of biomass energy based on the analysis of the relationship and interaction between the utilization of biomass energy and the environment, this work is beneficial for researchers to choose future research topics.
Optimized Synthesis and Calcination of Nickel Phosphate: Structural and Thermal Characterization Faradis, Royyan; Lumban Gaol, Binaria; Jovita, Stella; Fitri Ulfindrayani, Ika; Kris Murwani, Irmina
Jurnal Kimia Riset Vol. 10 No. 2 (2025): December
Publisher : Universitas Airlangga, Campus C Mulyorejo, Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jkimris.v10i2.76583

Abstract

Nickel Phosphate (NiP) has been successfully synthesized through the precipitation method. The effect of pH, stirring temperature, and Ni:P molar ratio on NiP formation has been studied. The optimization showed that NiP is formed at pH 6, stirring temperature of 90 °C, and a molar ratio of Ni:P of 3:6. Then, the obtained powder was calcined at a temperature of 350-800 °C. The synthesised NiP was characterized using X-ray powder diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, nitrogen adsorption-desorption, and Scanning Electron Microscopy (SEM). The characterization results showed that the NiP structure was amorphous at 350-600 °C and transformed into a monoclinic crystalline of Ni₃(PO₄)₂ at 800 °C. Nitrogen adsorption isotherms showed that the NiP result had a predominance of micropores with little mesoporous contribution. Sample NiP_350 shows the highest surface area (9.94 m2/g) with a more uniform pore distribution. FTIR-pyridine analysis identified the existence of both Lewis and Brønsted acid sites, with the predominance of Brønsted acid at low calcination temperatures. The increase in calcination temperature resulted in reduced surface area and total acidity due to pore coalescence and dehydration, which was in line with the results of SEM, which showed a denser morphology. Overall, these results confirm that variations in synthesis and calcination conditions play an important role in determining the textural properties, acidity, and structure of NiP, which makes them potential candidates for catalysis and adsorption applications.
Co-Authors Fitri Ulfindrayani, Ika Jovita, Stella Kris Murwani, Irmina Kris Murwani, Irmina Lumban Gaol, Binaria Suryanto, Ardiansyah Bagus