Akrajas Ali Umar
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Effect of electrolyte pH on room-temperature photoelectrodeposition of Cu2O for hydrogen evolution reaction Open
Cu2O is a promising material for the hydrogen evolution reaction due to the favourable band gap. However, achieving a pure Cu2O phase typically requires high deposition temperatures. To overcome this, electrolyte pH modification was employ…
Biosynthesis of sulfur and selenium co-doped ZnO nanoparticles for the enhanced photocatalytic treatment of industrial wastewater Open
Although ZnO photocatalysts show potential for wastewater treatment, their low efficiency limits the commercialization. To address this problem, we investigated the effect of co-doping ZnO with selenium (4%, fixed) and sulfur (0.5, 1, and …
Effect of Cesium Iodide (CsI) Concentration Variation on the Performance of MethylAmmonium Lead Iodide (MAPbI₃)-based Perovskite Solar Cells Open
The fabrication of MAPbI3 perovskite solar cell (PSC) devices with the modification of adding cesium iodide (CsI) into the PbI2 layer to enhance performance has been successfully carried out. The used synthesis method was a two-step spin c…
SYNTHESIS, CHARACTERIZATION AND ANTI-MICROBIAL ACTIVITIES OF SCHIFF BASE DERIVED FROM 2-AMINOBENZENETHIOL AND 4-NITROBENZALDEHYDE AND ITS Mn(II), Fe(II) AND Co(II) COMPLEXES Open
A Schiff base was prepared by the condensation of 2-aminobenzenethiol and 4-nitrobenzaldehyde. Metal (II) chlorides were refluxed with the prepared Schiff base affording the corresponding metal(II) complexes. The synthesized compounds were…
Influence of Sorbitol and Glycerol on Physical and Tensile Properties of Biodegradable–Edible Film From Snakehead Gelatin and <i>κ</i>‐Carrageenan Open
Two plasticizers with distinct properties are carefully studied in this research for their suitability in creating biocomposite edible film products. The study uncovers films’ physical, tensile, and biodegradability attributes, using snake…
Hot-carrier phenomenon in perovskite solar cells under white light emitting diode Open
Hot-carrier solar cells offer the potential for enhanced power conversion efficiency by tapping into the kinetic energy of hot carriers generated upon sunlight absorption. This involves using specially designed materials capable of efficie…
View article: Characterization of BaFe12O19/Co3O4 using mechanical alloying approach for microwave absorbing materials
Characterization of BaFe12O19/Co3O4 using mechanical alloying approach for microwave absorbing materials Open
In this research, the BaFe12O19/Co3O4 material was carried out using the mechanical alloying approach with variations in Co3O4 composition of (10, 15, 20) wt%. The characterizations were using XRD, SEM-EDX, and VNA. The results of XRD anal…
Exploring Green Chemistry: A Practicum Handbook for 11th Grade Science Students Open
The development of this practicum handbook aims to determine the validity of green chemistry-based chemistry practicum handbooks and to determine the practicality of green chemistry-based chemistry practicum handbooks. Research with the ti…
EFFECT OF PREPARATION ACETONE ON FISH BONES SYNTHESIZED THROUGH SINTERING METHOD TO IMPROVE HYDROXYAPATITE CHARACTERISTICS Open
In the development of advanced materials and various technological applications, the preparation and sintering processes have become two important factors in determining material characteristics. This research focuses on two main aspects, …
Raman spectroscopy of nanocomposites ZnO/ZnS and ZnO/ZnSe obtained by solvothermal-microwave synthesis method Open
We report the ZnO/ZnS and ZnO/ZnSe nanocomposites synthesized using the solvothermal-microwave method. Raman analysis was thoroughly studied to explain phonon vibration mode in this paper. The strong intensity confirms the highfrequency ph…
Particle Size Improvement and Layer Absorption of Metil Halida MAPbI3 Perovskite Doping Phenethylammonium Iodide (PEAI) Open
This study aims to determine the effect of phenethylammonium iodide (PEAI) doping on grain size and absorption of the methylammonium lead iodide (MAPbI3) perovskite layer. The MAPbI3 perovskite layer is interesting to study because of its …
Thin Film Structured Superior Anode Material Based N-Graphene Supported Coupled NiO/TiO2 Hollow Nanospheres and Their Cyclic Voltammetry Performance Open
In this research, we succeeded in designing a new strategy to synthesize a unique thin film structured of nitrogen doped graphene (NGr) composite combined with coupled NiO/TiO 2 hollow nanospheres using a synergistic hydrothermal method. T…
Photocatalytic activity and stability properties of porous TiO2 film as photocatalyst for methylene blue and methylene orange degradation Open
The development of photocatalyst material is strongly required to provide an efficient and effective photocatalyst with respect to photocatalytic activity performance, and also more specifically reusability. In this paper, we discuss the s…
Phases evolution and photocatalytic activity of Cu <sub>2</sub> O films electrodeposited from a non-pH-adjusted solution Open
A pure-phase Cu 2 O film photocatalyst was successfully prepared by the electrodeposition technique from a non-pH-adjusted solution. To investigate the phase evolution and photocatalytic activity of the film, the electrodeposition was cond…
Air-Processable Perovskite Solar Cells by Hexamine Molecule Phase Stabilization Open
Perovskite solar cells have emerged as a potential energy alternative due to their low cost of fabrication and high power conversion efficiency. Unfortunately, their poor ambient stability has critically limited their industrialization and…
Optoelectrical Properties of Hexamine Doped-Methylammonium Lead Iodide Perovskite under Different Grain-Shape Crystallinity Open
The crystallinity properties of perovskite influence their optoelectrical performance in solar cell applications. We optimized the grain shape and crystallinity of perovskite film by annealing treatment from 130 to 170 °C under high humidi…
Effect of Carbonization Temperature of Rice Husk Char Preparation on SiC Structure and Composition of By-Products in SiC Synthesis with Magnesiothermic Reduction Method Open
The structure of rice husk char is one of the factors that influence the morphology of SiC and the composition of by-products in the magnesiothermic reduction. This structure can be improved by carbonization. Therefore, this study aims to …
Structure and optical properties of La-doped ZnO thin films at room temperature Open
La-doped ZnO (with 0, 1, 5 and 7 wt.% La) thin films were deposited on Si substrates by ultrasonic spray pyrolysis, using frequency of 1.7MHz, and heated at 450?C for 15min. The effect of La addition on the structural and optical propertie…
Synthesis of Bioplastics on Rice Straw Cellulose Using Orange Peel Extract, Chitosan, and Sorbitol Open
With the use of several plasticizers (orange peel extract, chitosan, and sorbitol), rice straw cellulose has been used to synthesize and characterize bioplastics. This study aims to synthesize and characterize bioplastics from rice straw c…
Electrodeposition of Gold Nanoparticles from a Low Electrolyte Concentration for Ethanol Electrooxidation Open
In this research, the spherical gold nanoparticles (AuNPs) were successfully synthesized over fluorine-doped tin oxide glass (FTO) substrate from an additive-free and low-concentration electrolyte. Based on the field emission scanning elec…
Formation of Ultimate Thin 2D Crystal of Pt in the Presence of Hexamethylenetetramine Open
Platinum naturally crystalizes into a three-dimensional crystal due to its highly symmetrical fcc lattice, with a metallic bond which is non-directional and highly isotropic. This inherently means ultimately that 2D crystals of a few atoms…
Two-Dimensional Transition Metal Dichalcogenide as Electron Transport Layer of Perovskite Solar Cells Open
Conventional perovskite solar cells utilize a combination of a compact and mesoporous layer of TiO2 or SnO2 as the electron transport layer. This structure is vulnerable to massive loss of photogenerated carriers due to grain boundary resi…
High Performance COD Detection of Organic Compounds Pollutants using Sulfurized-TiO2/Ti Nanotubes Arrays Photoelectrocatalyst Open
Photoelectrochemical oxidation processes offer a highly sensitive method to detect organic pollutants from wastewaters. Photoactive semiconducting material is the key factor in this process that accelerates the oxidation of the organic pol…