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A Study of In2O3 Nano Particles for Gas Sensor Application Halbos, Raghad J.; Al-Algawi, Sariya; Rasheed, Rashed T.; Hassan, Ruqia Abdulhussien; Mahdi, Raghad R.; Azeez, Hasanain; Fayad, M. A.
Journal of Fuzzy Systems and Control Vol. 2 No. 3 (2024): Vol. 2, No. 3, 2024
Publisher : Peneliti Teknologi Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59247/jfsc.v2i3.217

Abstract

In this research, the sol-gel technique was used to prepare indium oxide nanoparticles. In addition, these particles are deposited by (dip coating technique) on a quartz substrate. Several measurement instruments (FTIR, SEM, UV-visible, and X-RAY diffraction) were used in this study to diagnose and analyze the properties of indium oxide (In2O3) particles at different parameters. The results from XRD indicated that the particle formation converted to a polycrystalline phase at different annealing temperatures (200 ℃ and 600 ℃) for an hour and a half. Also, the XRD results show an increase in the (grain size and lattice constant) with increased annealing temperature. The measurements of the Hall Effect showed the type of conductivity of (In2O3) particles is N-type, carrier concentration, mobility, and resistivity. The results of the sensitivity of indium oxide thin films to toxic gas, specifically carbon monoxide (CO) gas, showed an increase in the sensitivity of thin films annealed at high temperatures.
Experimental Analysis of rGO-V₂O₅ Nanocomposites for Sustainable Water Remediation Completed with Bibliometric Analysis Toward Achieving Sustainable Development Goals (SDGs) Abdullah, Thamer Adnan; Khaleel, Haneen Lateef; Saeed, Ammar W.; Mohammed, M. N.; Al-Obaidi, Qusay; Hussein, Mukhtar Ali; Mhmood, Wassef Abbood; Rasheed, Rashed T.; Abdullah, Oday I.
ASEAN Journal for Science and Engineering in Materials Vol 5, No 2 (2026): AJSEM: Volume 5, Issue 2, September 2026
Publisher : Bumi Publikasi Nusantara

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Abstract

This work integrates bibliometric analysis with laboratory experiments to develop nanotechnology-based water treatment technologies, aligning with Sustainable Development Goals (SDGs) on providing clean water and sanitation. A high-adsorption nanomaterial composed of reduced graphene oxide (rGO) doped with vanadium pentoxide (V₂O₅) was prepared using thermal doping and analyzed using XRD, FESEM, and FTIR techniques. This composite demonstrated the ability to remove 68.98% of methyl orange dye in just 30 minutes. Kinetic and adsorption studies showed conformed to a quasi-second-order kinetic model and a Langmuir single-layer adsorption model, indicating strong chemisorption and surface homogeneity. This high performance is attributed to the synergistic effect between V₂O₅ and rGO in contributing high surface area, improving electron transport, and enhancing effective sites for capturing dye molecules. This nanocomposite is a sustainable and economical option for supporting the smart architecture of urban water systems, contributing to SDGs.