Filtration and Separation, Environmental Engineering, Environmental Chemistry, Materials Science
24
Scopus Publications
1246
Scholar Citations
17
Scholar h-index
19
Scholar i10-index
Scopus Publications
Practical Prediction of Gas Separation Performance in Polymeric Membranes Using Machine Learning Hamid Zentou, Mohammed Abdullah Issa, Balqees S. Alshareef, Mahmoud M. Abdelnaby Chemistry an Asian Journal, 2026 Membrane‐based gas separation offers significant potential for carbon capture and clean energy applications; however, inconsistent experimental conditions often hinder direct comparison of membrane performance. In this work, machine learning (ML) is applied to predict gas permeability in polymeric membranes using a dataset comprising 3618 entries from 603 polymers across six gases (CO 2 , N 2 , H 2 , He, O 2 , and CH 4 ). Ensemble regression algorithms (Random Forest, Gradient Boosting, XGBoost, and Extra Trees) were developed and rigorously assessed. Model accuracy was evaluated using mean absolute error (MAE) and root mean square error (RMSE), both expressed in Barrer for physical relevance. Among the models, Random Forest exhibited the most reliable performance, achieving an MAE of 346.92 Barrer and an RMSE of 888.69 Barrer, highlighting its strong predictive capacity across diverse membrane–gas systems. Feature importance analysis, combined with SHAP interpretation, indicated that membrane structure, operating parameters, and gas‐specific properties play key roles in determining permeability. Benchmarking predictions against the Robeson upper bound further identified high‐performing membranes for CO 2 /N 2 and CO 2 /CH 2 separations. Overall, the study demonstrates the effectiveness of ML‐driven screening in accelerating membrane discovery and supporting the design of next‐generation gas separation materials.
Elucidating Heavy Metals Ions Detection Using Screen Printed Electrodes with Starch Carbon Dots as Modifier Sathya Rau Subramaniam, Zurina Zainal Abidin, Mohammed Abdullah Issa, Nur Haninah Harun, Musa Yahaya Pudza Water Air and Soil Pollution, 2025 Modified electrodes can produce significant improvement to detection of heavy metal. This is particularly useful especially in detecting similar characteristics heavy metal like same outer valence cations which can be challenging due to small signal difference. This study aims to investigate the effectiveness of screen printed electrode modified with starch carbon dots. Cyclic voltammetry measurements were conducted between –1.0 to + 1.0 V at a scan rate of 200 mV/s in 0.5M acetic acid solution for sensing Zn(II) and Cu(II) at concentration range of 0.5 to 10 ppm and 0.25 to 5 ppm respectively. Morphology, functional groups, particle size distribution and surface charges analysis were done for further elucidation. Results showed enhanced electron-transfer kinetics and current intensity for the modified electrode with carbon dots. Detection Limits of 0.122 ppm and 0.089 ppm for Zn(II) and Cu(II) was recorded under optimum conditions with excellent repeatability. Testing on spiked samples which consisted of distilled water, electrolyte and heavy metals, gave and excellent recoveries of the zinc and copper of more than 90%wt recovery. Although Zn(II) and Cu(II) are divalent cations of same group, their interactions with CDs on electrode surface for sensing still produce detectable differing signals due to difference in atomic size, charges, electron number and their molecular structures. Based on above mentioned characterization, CV performance and reliability testing, the modified SPE-CDs is capable to produce reliable detection of heavy metals with similar valency number in aqueous solution.
Fluorescent Sensing of Fe3+ in Acidic Environment by Carbon Dots Derived From Empty Fruit Bunch Biochar: Central Composite Design Optimization Mohammed Abdullah Issa, Zaid H. Jabbar, Hamid Zentou, Reham Basim Khalaf Luminescence, 2025 A rapid, eco‐friendly, and selective monitoring of Fe(III) in real media utilizing carbon dots (CDs) as a luminescence detector has been reported. CDs were fabricated by a hydrothermal route from empty fruit bunch biochar. The as‐synthesized CDs were analyzed using various analytical tools. The results reveal that CDs have spherical shapes with a narrow particle size distribution and are enriched with multiple active sites, which impart excellent hydrophilicity and photostability. The CDs displayed bright blue emission under UV light with emission/excitation maxima at 452/350 nm, respectively, and a QY of 7.54%. The CDs exhibited high resistance to photobleaching and high salt conditions and pose a long lifetime of up to 6 months with no agglomeration. The detection variables, including pH, temperature, and CDs concentration, were optimized via response surface methodology. The statistical data verified the precision of the quadratic model for predicting the sensing performance of the nanoprobe. Under optimal environments, a linear range from 0 to 50 μM and a detection limit of 0.17 μM was obtained. The turn‐off process includes the strong coordination between Fe(III) and electron‐donating oxygen species on the edge of CDs. The rapid luminescence recognition using acid‐free materials renders CDs a promising option for water treatment.
Practical Prediction of Gas Separation Performance in Polymeric Membranes Using Machine Learning H Zentou, MA Issa, BS Alshareef, MM Abdelnaby Chemistry–An Asian Journal 21 (4), e70645 , 2026 2026
Elucidating Heavy Metals Ions Detection Using Screen Printed Electrodes with Starch Carbon Dots as Modifier SR Subramaniam, ZZ Abidin, MA Issa, NH Harun, MY Pudza Water, Air, & Soil Pollution 236 (14), 909 , 2025 2025 Citations: 5
Fluorescent Sensing of Fe 3+ in Acidic Environment by Carbon Dots Derived From Empty Fruit Bunch Biochar: Central Composite Design Optimization MA Issa, ZH Jabbar, H Zentou, RB Khalaf Luminescence 40 (3), e70127 , 2025 2025 Citations: 2
Parameter effects and optimisation studies on ultrasound-assisted extraction of polyphenolics from mango peel wastes NAA Halim, MA Issa, R Abdullah, SZHS Zuber, NF Zainudin, WJ Ooi AIP Conference Proceedings 3114 (1), 020001 , 2024 2024
Developing an integrated mathematical model of fermentation-pervaporation system for bioethanol production H Zentou, ZZ Abidin, MA Issa, R Yunus, DRA Biak Chemical Engineering Journal 473, 145229 , 2023 2023 Citations: 19
A review study summarizes the main characterization techniques of nano-composite photocatalysts and their applications in photodegradation of organic pollutants ZH Jabbar, BH Graimed, AA Okab, MA Issa, SH Ammar, HJ Khadim, ... Environmental Nanotechnology, Monitoring & Management 19, 100765 , 2023 2023 Citations: 80
Fabrication of g-C3N4 nanosheets immobilized Bi2S3/Ag2WO4 nanorods for photocatalytic disinfection of Staphylococcus aureus cells in wastewater: dual S-scheme charge separation … ZH Jabbar, AA Okab, BH Graimed, MA Issa, SH Ammar Journal of Photochemistry and Photobiology A: Chemistry 438, 114556 , 2023 2023 Citations: 52
Highly stable β-Bi2O3/Ag decorated nanosilica as an efficient Schottky heterojunction for ciprofloxacin photodegradation in wastewater under LED illumination BH Graimed, AA Okab, ZH Jabbar, MA Issa, SH Ammar Materials Science in Semiconductor Processing 156, 107303 , 2023 2023 Citations: 47
Photocatalytic destruction of Congo red dye in wastewater using a novel Ag2WO4/Bi2S3 nanocomposite decorated g-C3N4 nanosheet as ternary S-scheme heterojunction: improving the … ZH Jabbar, AA Okab, BH Graimed, MA Issa, SH Ammar Diamond and Related Materials 133, 109711 , 2023 2023 Citations: 67
Chapter 21-Sustainable applications of carbon dots-based composites as photocatalyst for environmental pollutants remediation Z Zainal Abidin, M Yahaya Pudza, M Abdullah Issa, H Zentou, NH Harun, ... Novel Materials for Environmental Remediation Applications. Elsevier, 555-577 , 2023 2023 Citations: 5
Room temperature operated hydrogen sensor using palladium coated on tapered optical fiber MM Alkhabet, SH Girei, HK Salih, R Thabit, MA Issa, S Paiman, N Arsad, ... Materials Science and Engineering: B 287, 116092 , 2023 2023 Citations: 29
Photocatalytic degradation of Congo red dye using magnetic silica-coated Ag2WO4/Ag2S as Type I heterojunction photocatalyst: Stability and mechanisms studies ZH Jabbar, BH Graimed, MA Issa, SH Ammar, SE Ebrahim, HJ Khadim, ... Materials Science in Semiconductor Processing 153, 107151 , 2023 2023 Citations: 99
Ecofriendly adsorption and sensitive detection of Hg (II) by biomass-derived nitrogen-doped carbon dots: process modelling using central composite design MA Issa, H Zentou, ZH Jabbar, ZZ Abidin, H Harun, NAA Halim, ... Environmental Science and Pollution Research 29 (57), 86859-86872 , 2022 2022 Citations: 61
Modelling of mass transfer during pervaporation of ethanol/water mixture using polydimethylsiloxane membrane H Zentou, ZZ Abidin, R Yunus, DRA Biak, MA Issa, MY Pudza Chemical Engineering Research and Design 175, 320-329 , 2021 2021 Citations: 16
Optimization and modeling of the performance of polydimethylsiloxane for pervaporation of ethanol− water mixture H Zentou, ZZ Abidin, R Yunus, DRA Biak, MA Issa Journal of Applied Polymer Science 138 (19), 50408 , 2021 2021 Citations: 16
A new model of alcoholic fermentation under a byproduct inhibitory effect H Zentou, Z Zainal Abidin, R Yunus, DR Awang Biak, M Abdullah Issa, ... ACS omega 6 (6), 4137-4146 , 2021 2021 Citations: 44
Sustainable Development of Enhanced Luminescence Polymer-Carbon Dots Composite Film for Rapid Cd 2+ Removal from Wastewater M Abdullah Issa, Z Z. Abidin Molecules 25 (15), 3541 , 2020 2020 Citations: 51
Fluorescent recognition of Fe3+ in acidic environment by enhanced-quantum yield N-doped carbon dots: optimization of variables using central composite design MA Issa Scientific Reports 10, 11710 , 2020 2020 Citations: 99
Efficient removal of Cu(II) from aqueous systems using enhanced quantum yield nitrogen-doped carbon nanodots MA Issa RSC advances 10 (25), 14979 , 2020 2020 Citations: 37
Eco-friendly sustainable fluorescent carbon dots for the adsorption of heavy metal ions in aqueous environment M Yahaya Pudza, Z Zainal Abidin, S Abdul Rashid, F Md Yasin, ... Nanomaterials 10 (2), 315 , 2020 2020 Citations: 220
MOST CITED SCHOLAR PUBLICATIONS
Eco-friendly sustainable fluorescent carbon dots for the adsorption of heavy metal ions in aqueous environment M Yahaya Pudza, Z Zainal Abidin, S Abdul Rashid, F Md Yasin, ... Nanomaterials 10 (2), 315 , 2020 2020 Citations: 220
Facile synthesis of nitrogen-doped carbon dots from lignocellulosic waste M Abdullah Issa, Z Z. Abidin, S Sobri, S Rashid, M Adzir Mahdi, ... Nanomaterials 9 (10), 1500 , 2019 2019 Citations: 108
Photocatalytic degradation of Congo red dye using magnetic silica-coated Ag2WO4/Ag2S as Type I heterojunction photocatalyst: Stability and mechanisms studies ZH Jabbar, BH Graimed, MA Issa, SH Ammar, SE Ebrahim, HJ Khadim, ... Materials Science in Semiconductor Processing 153, 107151 , 2023 2023 Citations: 99
Fluorescent recognition of Fe3+ in acidic environment by enhanced-quantum yield N-doped carbon dots: optimization of variables using central composite design MA Issa Scientific Reports 10, 11710 , 2020 2020 Citations: 99
A review study summarizes the main characterization techniques of nano-composite photocatalysts and their applications in photodegradation of organic pollutants ZH Jabbar, BH Graimed, AA Okab, MA Issa, SH Ammar, HJ Khadim, ... Environmental Nanotechnology, Monitoring & Management 19, 100765 , 2023 2023 Citations: 80
Synthesis and characterization of fluorescent carbon dots from tapioca MY Pudza, ZZ Abidin, S Abdul‐Rashid, FM Yassin, ASM Noor, ... ChemistrySelect 4 (14), 4140-4146 , 2019 2019 Citations: 68
Photocatalytic destruction of Congo red dye in wastewater using a novel Ag2WO4/Bi2S3 nanocomposite decorated g-C3N4 nanosheet as ternary S-scheme heterojunction: improving the … ZH Jabbar, AA Okab, BH Graimed, MA Issa, SH Ammar Diamond and Related Materials 133, 109711 , 2023 2023 Citations: 67
Sustainable synthesis processes for carbon dots through response surface methodology and artificial neural network M Yahaya Pudza, Z Zainal Abidin, S Abdul Rashid, F Md Yasin, ... Processes 7 (10), 704 , 2019 2019 Citations: 63
Ecofriendly adsorption and sensitive detection of Hg (II) by biomass-derived nitrogen-doped carbon dots: process modelling using central composite design MA Issa, H Zentou, ZH Jabbar, ZZ Abidin, H Harun, NAA Halim, ... Environmental Science and Pollution Research 29 (57), 86859-86872 , 2022 2022 Citations: 61
Fabrication of g-C3N4 nanosheets immobilized Bi2S3/Ag2WO4 nanorods for photocatalytic disinfection of Staphylococcus aureus cells in wastewater: dual S-scheme charge separation … ZH Jabbar, AA Okab, BH Graimed, MA Issa, SH Ammar Journal of Photochemistry and Photobiology A: Chemistry 438, 114556 , 2023 2023 Citations: 52
Sustainable Development of Enhanced Luminescence Polymer-Carbon Dots Composite Film for Rapid Cd 2+ Removal from Wastewater M Abdullah Issa, Z Z. Abidin Molecules 25 (15), 3541 , 2020 2020 Citations: 51
Fabrication, characterization and response surface method optimization for quantum efficiency of fluorescent nitrogen-doped carbon dots obtained from carboxymethylcellulose of … MA Issa, ZZ Abidin, S Sobri, S Abdul-Rashid, MA Mahdi, NA Ibrahim, ... Chinese Journal of Chemical Engineering 28 (2), 584-592 , 2019 2019 Citations: 49
Highly stable β-Bi2O3/Ag decorated nanosilica as an efficient Schottky heterojunction for ciprofloxacin photodegradation in wastewater under LED illumination BH Graimed, AA Okab, ZH Jabbar, MA Issa, SH Ammar Materials Science in Semiconductor Processing 156, 107303 , 2023 2023 Citations: 47
A new model of alcoholic fermentation under a byproduct inhibitory effect H Zentou, Z Zainal Abidin, R Yunus, DR Awang Biak, M Abdullah Issa, ... ACS omega 6 (6), 4137-4146 , 2021 2021 Citations: 44
Efficient removal of Cu(II) from aqueous systems using enhanced quantum yield nitrogen-doped carbon nanodots MA Issa RSC advances 10 (25), 14979 , 2020 2020 Citations: 37
Room temperature operated hydrogen sensor using palladium coated on tapered optical fiber MM Alkhabet, SH Girei, HK Salih, R Thabit, MA Issa, S Paiman, N Arsad, ... Materials Science and Engineering: B 287, 116092 , 2023 2023 Citations: 29
Developing an integrated mathematical model of fermentation-pervaporation system for bioethanol production H Zentou, ZZ Abidin, MA Issa, R Yunus, DRA Biak Chemical Engineering Journal 473, 145229 , 2023 2023 Citations: 19
Modelling of mass transfer during pervaporation of ethanol/water mixture using polydimethylsiloxane membrane H Zentou, ZZ Abidin, R Yunus, DRA Biak, MA Issa, MY Pudza Chemical Engineering Research and Design 175, 320-329 , 2021 2021 Citations: 16
Optimization and modeling of the performance of polydimethylsiloxane for pervaporation of ethanol− water mixture H Zentou, ZZ Abidin, R Yunus, DRA Biak, MA Issa Journal of Applied Polymer Science 138 (19), 50408 , 2021 2021 Citations: 16
COAGULATION TREATMENT OF PALM OIL MILL EFFLUENT USING PLANT-BASED TANNIN M ABDULLAH, ZZ ABIDIN Pollution Research 37 (3), 788-793 , 2018 2018 Citations: 9
