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All Journal Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Faraday: Journal of Fundamental Physics, Research, and Applied Science
Nenni Mona Aruan
Universitas Pembangunan Nasional "Veteran" Jawa Timur
Astronomy Computer Science & IT Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Review: Characterization of Optical and Structural Properties of Carbon Nanodots (CNDs) from Biomass Waste by Microwave Method Ima Putriana; Nenni Mona Aruan; Reffany Choiru Riskiarna; Nur Aini Fauziyah; Arum Sinda Santika
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 1 No. 2 (2025): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v1i2.14

Abstract

This review focuses on examining the synthesis and characterization of Carbon Nanodots (CNDs) from the utilization of Tandan Kosong Kelapa Sawit (TKKS) using the microwave method as an environmentally friendly approach. The resulting CNDs were characterized for their optical and structural properties to evaluate their potential application in the field of biosensors. The synthesis process involves carbonizing TKKS at 500℃ for 3 hours, followed by activation using a microwave at 450 Watts for 15 minutes. UV-Vis characterization shows an absorption peak at 280 nm, which indicates n-π* (C=O) and π-π* (C=C). Meanwhile, FTIR characterization aims to determine the presence of the carbonyl C=O functional group at 1990,98 cm-1 and the aromatic C=C bond at 1416,2 cm-1. The CNDs from TKKS exhibit photoluminescent properties and surface functional groupss that enhance adsorption performance and chemical reactivity. This research offers an efficient and sustainable method for synthesizing CNDs, while also being a breakthrough in utilizing biomass wate, particularly TKKS. The findings have the potential for developing carbon materials in environmental and energi applications.
Review: Synthesis of rGO in Its Use as Thin Films with Various Polymer Matrices Rahma Alya Hidayah; Nenni Mona Aruan; Nur Aini Fauziyah; Reffany Choiru Rizkiarna; Alfriana Margareta
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 2 No. 1 (2026): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v2i1.61

Abstract

Reduced graphene oxide (rGO) is a two-dimensional carbon material that has been widely developed as a functional filler in polymer-based thin films due to its high surface area, good electrical conductivity, and adequate interface compatibility. This article presents a literature review on the synthesis of rGO and its use as thin films with various polymer matrices, namely polyaniline (PANi), poly(vinylidene fluoride) (PVDF), poly(vinylidene fluoride–trifluoroethylene) [P(VDF-TrFE)], and chitosan. The review was conducted on open access scientific articles discussing rGO synthesis methods, thin film fabrication techniques, and structural, morphological, thermal, and electrical characterization of composite materials. The results of the study show that rGO can improve the functional performance of polymer thin films through the formation of conductive networks, strengthening of interface interactions, and crystal nucleation effects. In the PANi matrix, rGO increases electrical conductivity and stability, while in PVDF and P(VDF-TrFE), rGO promotes the formation of electroactive crystalline phases that enhance piezoelectric properties. Meanwhile, in chitosan, strong interfacial interactions improve electrochemical response and the potential for environmentally friendly sensor applications.
Evaluation of Temperature and Surface Humidity Variability of the Troposphere Using Radiosonde Observations Awalia 'Ulyan Najah; Nenni Mona Aruan; Siswanto Siswanto
Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 12, No 1 (2026): Al-Marshad
Publisher : University of Muhammadiyah Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jam.v12i1.30225

Abstract

This study aims to evaluate the variability of surface atmospheric temperature and humidity and the implications for atmospheric stability based on observation data at the Juanda-Sidoarjo Class 1 Meteorological Station in February 2026. The method used is a quantitative approach with descriptive and evaluative analysis of temperature and humidity data at two observation times. So the results show that the temperature during the day has a greater variation of around 24.6°C to 30.0°C while the relative humidity is around 67% to 97%. Likewise, at night it has a larger variation, around 24.3°C to 26.3°C, while the relative humidity is higher, around 81% to 96%. This analysis shows an inverse relationship between temperature and humidity, where temperature increase is followed by a decrease in relative humidity. The atmospheric dynamics side of daytime conditions produces labile atmospheric conditions due to intense surface heating, while for nighttime it shows stable atmospheric conditions due to surface cooling. So that temperature and humidity variability play an important role in controlling atmospheric stability and weather dynamics in tropical regions.
Co-Authors Alfriana Margareta Arum Sinda Santika Awalia 'Ulyan Najah Ima Putriana Nur Aini Fauziyah Rahma Alya Hidayah Reffany Choiru Riskiarna Reffany Choiru Rizkiarna Siswanto Siswanto