Pub Date : 2026-03-01Epub Date: 2025-12-24DOI: 10.1016/j.scowo.2025.100173
Baraa Ahmad Neama, Hayder Hamied Mihsen, Haitham Dalol Hanoon
Brønsted acidic ionic liquid ([MCM-41-(PSim)][H2PO4]) was synthesized as a heterogeneous catalyst derived from rice husks. The catalyst underwent characterization and analysis through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), nitrogen adsorption-desorption analysis, thermogravimetric analysis (TGA/DTG), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS). The newly developed catalyst was utilised in the reaction of o-phenylenediamine with various aldehydes under two distinct conditions: ultrasonic irradiation and reflux. All benzimidazole derivatives produced in this study were identified through melting point analysis, FTIR, 1H NMR, and mass spectrometry.
{"title":"Development of a heterogeneous brønsted acid catalyst from rice husks: Structural characterization and catalytic application in benzimidazole synthesis","authors":"Baraa Ahmad Neama, Hayder Hamied Mihsen, Haitham Dalol Hanoon","doi":"10.1016/j.scowo.2025.100173","DOIUrl":"10.1016/j.scowo.2025.100173","url":null,"abstract":"<div><div>Brønsted acidic ionic liquid ([MCM-41-(PSim)][H<sub>2</sub>PO<sub>4</sub>]) was synthesized as a heterogeneous catalyst derived from rice husks. The catalyst underwent characterization and analysis through Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), nitrogen adsorption-desorption analysis, thermogravimetric analysis (TGA/DTG), and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS). The newly developed catalyst was utilised in the reaction of o-phenylenediamine with various aldehydes under two distinct conditions: ultrasonic irradiation and reflux. All benzimidazole derivatives produced in this study were identified through melting point analysis, FTIR, <sup>1</sup>H NMR, and mass spectrometry.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100173"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The widespread release of synthetic dyes from the textile industry poses a serious environmental threat, but current wastewater treatment methods frequently lack sustainability, efficiency, and selectivity. Considering their high surface area, surface functionalization potential, and superior adsorption capabilities, nanomaterials have been extensively studied for dye removal; yet, the existing research is still dispersed, primarily concentrating on isolated modeling techniques or experimental adsorption performance. For the advancement of predictive optimization and mechanistic assessment, there is a prominent research gap in the systematic integration of modern computational, machine learning, and molecular modeling techniques with nanomaterial-based dye removal. In addition to machine learning techniques like artificial neural networks, support vector machines, decision trees, gradient boosting, adaptive neuro-fuzzy inference systems, and hybrid optimization frameworks, response surface methodology is discussed. By thoroughly summarizing current developments at the interface of nanotechnology, data-driven modeling, and molecular-level simulations for textile dye remediation, this review addresses this problem. Although findings of high predicted accuracies of R2 > 0.99 are frequently reported, this review also draws attention to issues with model interpretability, data quality, overfitting, and emphasizing the significance of suitable validation techniques such as k-fold cross-validation and external datasets. Adsorption energetics, binding affinities, and surface interactions at the atomic scale are investigated by molecular docking and molecular dynamics simulations. Environmental effect, process scalability, and adsorbent regeneration are also taken into consideration. This review offers an insightful framework for rational nanomaterial design, data-assisted decision-making, and the creation of effective and sustainable methods for eliminating dyes by integrating process optimization with molecular-level insights.
{"title":"Role of nanomaterials in dye removal with applications of various machine learning and statistical optimization tools for enhancing adsorption","authors":"Nisha Loura , Kavita Rathee , Manvender Singh , Vikas Dhull","doi":"10.1016/j.scowo.2026.100193","DOIUrl":"10.1016/j.scowo.2026.100193","url":null,"abstract":"<div><div>The widespread release of synthetic dyes from the textile industry poses a serious environmental threat, but current wastewater treatment methods frequently lack sustainability, efficiency, and selectivity. Considering their high surface area, surface functionalization potential, and superior adsorption capabilities, nanomaterials have been extensively studied for dye removal; yet, the existing research is still dispersed, primarily concentrating on isolated modeling techniques or experimental adsorption performance. For the advancement of predictive optimization and mechanistic assessment, there is a prominent research gap in the systematic integration of modern computational, machine learning, and molecular modeling techniques with nanomaterial-based dye removal. In addition to machine learning techniques like artificial neural networks, support vector machines, decision trees, gradient boosting, adaptive neuro-fuzzy inference systems, and hybrid optimization frameworks, response surface methodology is discussed. By thoroughly summarizing current developments at the interface of nanotechnology, data-driven modeling, and molecular-level simulations for textile dye remediation, this review addresses this problem. Although findings of high predicted accuracies of R<sup>2</sup> > 0.99 are frequently reported, this review also draws attention to issues with model interpretability, data quality, overfitting, and emphasizing the significance of suitable validation techniques such as k-fold cross-validation and external datasets. Adsorption energetics, binding affinities, and surface interactions at the atomic scale are investigated by molecular docking and molecular dynamics simulations. Environmental effect, process scalability, and adsorbent regeneration are also taken into consideration. This review offers an insightful framework for rational nanomaterial design, data-assisted decision-making, and the creation of effective and sustainable methods for eliminating dyes by integrating process optimization with molecular-level insights.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100193"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diplazium maximum is a wild edible fern species rich in different bioactive compounds (polypeptides, flavonoids, phenolics, alkaloids, saponins, steroids, tannins, and glycosides), and has been used by local healers for treating several ailments. For the first time, the antimicrobial activity of silver nanoparticles derived from this species was assessed scientifically in vitro, which were further characterized following UV-Visible Spectroscopy, X-Ray Diffraction, Atomic Force Microscopy, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscopy, and High-Resolution Transmission Electron Microscopy. These studies confirmed synthesis of quasi-spherical shaped nanoparticles with average size of 17.0 ± 7.85 nm which were most effective against Pseudomonas aeruginosa (13.83 ± 0.29 mm) followed by Bacillus cereus (12.25 ± 0.55 mm) at 180 µl (agar well diffusion assay). While they were most inhibitory against B. cereus and Aspergillus niger (Minimum Inhibitory Concentration: 0.0781 mg/100 µl) than crude extract. Hence, with nano-technological interventions, D. maximum antimicrobial efficacy can be enhanced, and also this species serves as a strong candidate for future herbal drug development, which are not only efficient but also eco-friendly.
{"title":"Antimicrobial properties of green synthesized silver nanoparticles from Diplazium maximum (D. Don) C. Chr.","authors":"Purnima Sharma , Pardeep Kumar , Arvind Kumar Bhatt","doi":"10.1016/j.scowo.2025.100157","DOIUrl":"10.1016/j.scowo.2025.100157","url":null,"abstract":"<div><div><em>Diplazium maximum</em> is a wild edible fern species rich in different bioactive compounds (polypeptides, flavonoids, phenolics, alkaloids, saponins, steroids, tannins, and glycosides), and has been used by local healers for treating several ailments. For the first time, the antimicrobial activity of silver nanoparticles derived from this species was assessed scientifically in vitro, which were further characterized following UV-Visible Spectroscopy, X-Ray Diffraction, Atomic Force Microscopy, Fourier Transform Infrared Spectroscopy, Field Emission Scanning Electron Microscopy, and High-Resolution Transmission Electron Microscopy. These studies confirmed synthesis of quasi-spherical shaped nanoparticles with average size of 17.0 ± 7.85 nm which were most effective against <em>Pseudomonas aeruginosa</em> (13.83 ± 0.29 mm) followed by <em>Bacillus cereus</em> (12.25 ± 0.55 mm) at 180 µl (agar well diffusion assay). While they were most inhibitory against <em>B. cereus</em> and <em>Aspergillus niger</em> (Minimum Inhibitory Concentration: 0.0781 mg/100 µl) than crude extract. Hence, with nano-technological interventions, <em>D. maximum</em> antimicrobial efficacy can be enhanced, and also this species serves as a strong candidate for future herbal drug development, which are not only efficient but also eco-friendly.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100157"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145685083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-02-23DOI: 10.1016/j.scowo.2026.100202
Madhusmita Behera, Akshaya Kumar Verma
Textile wastewater containing residual reactive azo dyes is one of the most prevalent sources of environmental pollution due to their readily soluble characteristics. Such dyes are used in textile industries by dyeing and printing the cotton, wool and nylon fibres. In the present study, feasibility of using scrap aluminium sheets as electrodes in electrocoagulation (EC) for the removal of reactive azo dye (Reactive Black 5) from aqueous solution was investigated. A monopolar-parallel EC reactor was developed, and Response Surface Methodology (RSM) was applied to optimise key operating parameters, namely pH, applied voltage, supporting electrolyte concentration, inter-electrode distance, and electrolysis time. Process optimization identified the optimal EC conditions (pH 4, voltage 15 V, electrolyte concentration 0.50 g/L, electrolysis time 25 min, and inter electrode distance 2 cm), resulting a maximum 97 % dye removal from the aqueous sources, ensuring virtually colourless effluent. The estimated cost of operating the electrocoagulation system was $ 0.20/m3 of treated water and $ 2.00/kg of dye removed, demonstrating that the electrocoagulation process can economically treat textile wastewater. Present work not only emphasised the valorisation of scrap aluminium waste for removal of readily soluble di-azo textile dye under statistically derived optimisation but also a value added metal waste management including cost-effective strategy.
{"title":"Electrocoagulation using scrap aluminium electrodes for Reactive Black 5 removal from aqueous media: Process modelling and techno-economic evaluation","authors":"Madhusmita Behera, Akshaya Kumar Verma","doi":"10.1016/j.scowo.2026.100202","DOIUrl":"10.1016/j.scowo.2026.100202","url":null,"abstract":"<div><div>Textile wastewater containing residual reactive azo dyes is one of the most prevalent sources of environmental pollution due to their readily soluble characteristics. Such dyes are used in textile industries by dyeing and printing the cotton, wool and nylon fibres. In the present study, feasibility of using scrap aluminium sheets as electrodes in electrocoagulation (EC) for the removal of reactive azo dye (Reactive Black 5) from aqueous solution was investigated. A monopolar-parallel EC reactor was developed, and Response Surface Methodology (RSM) was applied to optimise key operating parameters, namely pH, applied voltage, supporting electrolyte concentration, inter-electrode distance, and electrolysis time. Process optimization identified the optimal EC conditions (pH 4, voltage 15 V, electrolyte concentration 0.50 g/L, electrolysis time 25 min, and inter electrode distance 2 cm), resulting a maximum 97 % dye removal from the aqueous sources, ensuring virtually colourless effluent. The estimated cost of operating the electrocoagulation system was $ 0.20/m<sup>3</sup> of treated water and $ 2.00/kg of dye removed, demonstrating that the electrocoagulation process can economically treat textile wastewater. Present work not only emphasised the valorisation of scrap aluminium waste for removal of readily soluble di-azo textile dye under statistically derived optimisation but also a value added metal waste management including cost-effective strategy.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100202"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-01DOI: 10.1016/j.scowo.2025.100179
Dinh-Nhat Do , Xuan-Tien Le
Vacuum fractional distillation (VFD) is an efficient and environmentally friendly method for the separation and purification of thermally unstable and oxidizable bioactive compounds from essential oils through a virtually solvent-free process. This review highlights the importance of essential oil fractionation to meet the growing demands in the fragrance, cosmetic, food, and pharmaceutical industries. Fundamental principles and thermodynamics are summarized alongside VFD modeling, enabling prediction of phase behavior, column performance, hydrodynamics, and residence times, while reducing development time and scale-up risk. Published simulation and experimental studies are synthesized to define key influencing factors and practical operating windows for VFD performance. In addition, the review also identifies persistent data gaps, including non-standardized reporting practices, limited vacuum vapor-liquid equilibrium (VLE) data for key binary systems, and insufficient pilot-scale studies, which currently constrain reproducible research transfer and broader industrial implementation.
{"title":"Vacuum fractional distillation of essential oils: Enrichment and purification of bioactive constituents","authors":"Dinh-Nhat Do , Xuan-Tien Le","doi":"10.1016/j.scowo.2025.100179","DOIUrl":"10.1016/j.scowo.2025.100179","url":null,"abstract":"<div><div>Vacuum fractional distillation (VFD) is an efficient and environmentally friendly method for the separation and purification of thermally unstable and oxidizable bioactive compounds from essential oils through a virtually solvent-free process. This review highlights the importance of essential oil fractionation to meet the growing demands in the fragrance, cosmetic, food, and pharmaceutical industries. Fundamental principles and thermodynamics are summarized alongside VFD modeling, enabling prediction of phase behavior, column performance, hydrodynamics, and residence times, while reducing development time and scale-up risk. Published simulation and experimental studies are synthesized to define key influencing factors and practical operating windows for VFD performance. In addition, the review also identifies persistent data gaps, including non-standardized reporting practices, limited vacuum vapor-liquid equilibrium (VLE) data for key binary systems, and insufficient pilot-scale studies, which currently constrain reproducible research transfer and broader industrial implementation.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100179"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145884220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-29DOI: 10.1016/j.scowo.2026.100197
Kailash R , Jelin Vilvest , Alex Yagoo , Kunguma Kannika M , Mariya Vaishnika A , Madasamy Muthupandy
This study reports the green synthesis of silver nanoparticles (AgNPs) using Pisonia alba leaf extract and their insecticidal evaluation against the polyphagous pest Spodoptera litura. Conventional pesticides, though effective, cause environmental pollution, resistance, and non-target toxicity, whereas green-synthesized nanoparticles provide a sustainable alternative. AgNPs were synthesized using aqueous leaf extracts of P. alba, acting as reducing and capping agents. The formation of nanoparticles was confirmed by a color change and characterized by UV–visible spectroscopy (surface plasmon resonance peak at ∼420 nm) and X-ray diffraction (face-centered cubic crystalline structure with minor silver oxide phases). SEM revealed predominantly spherical nanoparticles capped with plant residues. Bioassays on eggs, larvae, and pupae of S. litura (62.5–1000 ppm) showed strong insecticidal efficacy. Ovicidal tests resulted in complete egg mortality with LC₅₀ and LC₉₀ values of 1.0 ppm and 3.20 ppm, respectively. Larvicidal assays recorded LC₅₀ at 96.36 ppm and LC₉₀ at 442.28 ppm, while pupicidal tests revealed LC₅₀ at 54.07 ppm and IC₉₀ at 238.86 ppm. These findings highlight the potent insecticidal action of P. alba-mediated AgNPs and support their application as eco-friendly nanobiopesticides in integrated pest management.
{"title":"Green synthesis of silver nanoparticles using Pisonia alba and toxicity assessment against Spodoptera litura across developmental stages","authors":"Kailash R , Jelin Vilvest , Alex Yagoo , Kunguma Kannika M , Mariya Vaishnika A , Madasamy Muthupandy","doi":"10.1016/j.scowo.2026.100197","DOIUrl":"10.1016/j.scowo.2026.100197","url":null,"abstract":"<div><div>This study reports the green synthesis of silver nanoparticles (AgNPs) using <em>Pisonia alba</em> leaf extract and their insecticidal evaluation against the polyphagous pest <em>Spodoptera litura</em>. Conventional pesticides, though effective, cause environmental pollution, resistance, and non-target toxicity, whereas green-synthesized nanoparticles provide a sustainable alternative. AgNPs were synthesized using aqueous leaf extracts of <em>P. alba</em>, acting as reducing and capping agents. The formation of nanoparticles was confirmed by a color change and characterized by UV–visible spectroscopy (surface plasmon resonance peak at ∼420 nm) and X-ray diffraction (face-centered cubic crystalline structure with minor silver oxide phases). SEM revealed predominantly spherical nanoparticles capped with plant residues. Bioassays on eggs, larvae, and pupae of <em>S. litura</em> (62.5–1000 ppm) showed strong insecticidal efficacy. Ovicidal tests resulted in complete egg mortality with LC₅₀ and LC₉₀ values of 1.0 ppm and 3.20 ppm, respectively. Larvicidal assays recorded LC₅₀ at 96.36 ppm and LC₉₀ at 442.28 ppm, while pupicidal tests revealed LC₅₀ at 54.07 ppm and IC₉₀ at 238.86 ppm. These findings highlight the potent insecticidal action of <em>P. alba</em>-mediated AgNPs and support their application as eco-friendly nanobiopesticides in integrated pest management.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100197"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-02-18DOI: 10.1016/j.scowo.2026.100201
V. Divya , K. Anbarasu , A. Saravanan , V.C. Deivayanai
The effectiveness of cobalt nanoparticles (CoNPs) in eliminating contaminants such as dyes, heavy metals, and bacteria resistant to antibiotics is highlighted in this review, which also examines the synthesis techniques and uses of CoNPs in wastewater treatment. Water quality has been greatly impacted by the toxic pollutants that have been released into aquatic ecosystems as a result of rapid industrialization. Traditional methods of treatment, like chemical reactions and membrane filtration, are frequently expensive, energy-intensive, and produce secondary waste. Because of their high surface area, reactivity, and adsorption capabilities, CoNPs offer a sustainable replacement that effectively binds and breaks down pollutants. It emphasizes their use in tannery wastewater treatment, hybrid filtration systems, and advanced oxidation processes. Furthermore, CoNPs' potential to target bacteria that are resistant to antibiotics is being studied more and more. This review highlights the drawbacks of conventional techniques and presents CoNPs as an adaptable and effective method to address environmental issues in water treatment, opening the door for further advancements in this area.
{"title":"Advances in cobalt-based nanomaterials for wastewater treatment: Mechanistic insights and future directions","authors":"V. Divya , K. Anbarasu , A. Saravanan , V.C. Deivayanai","doi":"10.1016/j.scowo.2026.100201","DOIUrl":"10.1016/j.scowo.2026.100201","url":null,"abstract":"<div><div>The effectiveness of cobalt nanoparticles (CoNPs) in eliminating contaminants such as dyes, heavy metals, and bacteria resistant to antibiotics is highlighted in this review, which also examines the synthesis techniques and uses of CoNPs in wastewater treatment. Water quality has been greatly impacted by the toxic pollutants that have been released into aquatic ecosystems as a result of rapid industrialization. Traditional methods of treatment, like chemical reactions and membrane filtration, are frequently expensive, energy-intensive, and produce secondary waste. Because of their high surface area, reactivity, and adsorption capabilities, CoNPs offer a sustainable replacement that effectively binds and breaks down pollutants. It emphasizes their use in tannery wastewater treatment, hybrid filtration systems, and advanced oxidation processes. Furthermore, CoNPs' potential to target bacteria that are resistant to antibiotics is being studied more and more. This review highlights the drawbacks of conventional techniques and presents CoNPs as an adaptable and effective method to address environmental issues in water treatment, opening the door for further advancements in this area.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100201"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147394677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-18DOI: 10.1016/j.scowo.2026.100191
Utkarsh Sharma, Anita Singh Kirrolia, Narsi R. Bishnoi
To meet the 1.5°C climate targets, the global energy transition requires a versatile carrier to decarbonize "hard-to-abate" sectors (steel, cement, and heavy transport). While hydrogen is a leading candidate, existing literature often treats technological, environmental, and policy dimensions in isolation, creating a fragmented understanding of its true sustainability. This review employs a systematic analysis of over 250 peer-reviewed sources and international policy frameworks (2015–2025) to synthesize production pathways ranging from thermochemical (SMR, gasification) to electrochemical and biological methods. Evaluation is conducted through a multi-dimensional lens focusing on Carbon Intensity (CI), Circular Economy (CE) metrics, and alignment with UN Sustainable Development Goals (SDGs 7, 9, and 13). Our findings demonstrate that while green hydrogen offers near-zero operational emissions, its lifecycle sustainability is contingent upon "Green Chemistry" innovations in membrane materials and catalysts to reduce rare-earth mineral dependency. Comparative analysis reveals that "Blue" hydrogen acts only as a bridge, as its long-term viability is limited by methane leakage and carbon capture efficiencies (<90%). Furthermore, we identify a critical "policy-technology" gap: current global frameworks lack standardized lifecycle assessment (LCA) protocols, which hinders international trade and sustainable finance. This review contributes a novel integrated framework that bridges the gap between laboratory-scale innovations and macro-level policy. We conclude that achieving a net-zero future requires not just "clean" production, but a circular hydrogen economy that prioritizes material recovery and harmonized global certification standards.
{"title":"Advancing sustainable hydrogen: Technological, environmental, and policy perspectives for the global energy transition","authors":"Utkarsh Sharma, Anita Singh Kirrolia, Narsi R. Bishnoi","doi":"10.1016/j.scowo.2026.100191","DOIUrl":"10.1016/j.scowo.2026.100191","url":null,"abstract":"<div><div>To meet the 1.5°C climate targets, the global energy transition requires a versatile carrier to decarbonize \"hard-to-abate\" sectors (steel, cement, and heavy transport). While hydrogen is a leading candidate, existing literature often treats technological, environmental, and policy dimensions in isolation, creating a fragmented understanding of its true sustainability. This review employs a systematic analysis of over 250 peer-reviewed sources and international policy frameworks (2015–2025) to synthesize production pathways ranging from thermochemical (SMR, gasification) to electrochemical and biological methods. Evaluation is conducted through a multi-dimensional lens focusing on Carbon Intensity (CI), Circular Economy (CE) metrics, and alignment with UN Sustainable Development Goals (SDGs 7, 9, and 13). Our findings demonstrate that while green hydrogen offers near-zero operational emissions, its lifecycle sustainability is contingent upon \"Green Chemistry\" innovations in membrane materials and catalysts to reduce rare-earth mineral dependency. Comparative analysis reveals that \"Blue\" hydrogen acts only as a bridge, as its long-term viability is limited by methane leakage and carbon capture efficiencies (<90%). Furthermore, we identify a critical \"policy-technology\" gap: current global frameworks lack standardized lifecycle assessment (LCA) protocols, which hinders international trade and sustainable finance. This review contributes a novel integrated framework that bridges the gap between laboratory-scale innovations and macro-level policy. We conclude that achieving a net-zero future requires not just \"clean\" production, but a circular hydrogen economy that prioritizes material recovery and harmonized global certification standards.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100191"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-03-01Epub Date: 2026-01-31DOI: 10.1016/j.scowo.2026.100195
JinJin Pei , Saravana Ganesh N. , Suresh Subramaniyam , Sivaramakrishnan R. , Gopalakrishnan Velliyur Kanniappan , Selvaraj Jayaraman , Chella Perumal Palanisamy
This study explores the green synthesis and characterization of copper oxide nanoparticles (CuO-NPs) using Padina tetrastromatica algal extract and their incorporation into starch/PVA nanoscaffolds for enhanced antidiabetic applications. The CuO-NPs were characterized using UV-Visible spectroscopy, showing a distinct surface plasmon resonance peak at 273 nm, while Fourier-transform infrared spectroscopy confirmed characteristic Cu-O bonds at 602.84 cm−1 and 433.39 cm−1. X-ray diffraction analysis revealed the monoclinic tenorite phase of CuO-NPs with high crystallinity, whereas the nanoscaffolds exhibited a semi-crystalline structure. scanning electron microscopy imaging demonstrated uniform NP dispersion within the porous, fibrous scaffold matrix. Thermogravimetric analysis indicated thermal stability up to 300°C, and Dynamic light scattering analysis showed NPs with 108 nm average size and moderate colloidal stability (-22.13 mV). The nanocomposites exhibited remarkable concentration-dependent inhibition of α-amylase (80.42 % at 100 µg/mL) and α-glucosidase (79.32 % at 100 µg/mL), significantly outperforming individual components. The enhanced antidiabetic activity is attributed to synergistic interactions between CuO NPs and the polymeric nanoscaffold architecture, which may influence nanoparticle stabilization and enzyme-material interactions. The results highlight the potential of these eco-friendly nanoscaffolds as effective platforms for diabetes management, combining the therapeutic benefits of algal extracts with nanotechnology. Further in vivo studies are warranted to validate their clinical potential.
{"title":"Sustainable fabrication of starch/PVA/CuO electrospun nanoscaffolds from Padina tetrastromatica (Brown macroalgae) extract: Physicochemical characterization and antidiabetic assessment","authors":"JinJin Pei , Saravana Ganesh N. , Suresh Subramaniyam , Sivaramakrishnan R. , Gopalakrishnan Velliyur Kanniappan , Selvaraj Jayaraman , Chella Perumal Palanisamy","doi":"10.1016/j.scowo.2026.100195","DOIUrl":"10.1016/j.scowo.2026.100195","url":null,"abstract":"<div><div>This study explores the green synthesis and characterization of copper oxide nanoparticles (CuO-NPs) using <em>Padina tetrastromatica</em> algal extract and their incorporation into starch/PVA nanoscaffolds for enhanced antidiabetic applications. The CuO-NPs were characterized using UV-Visible spectroscopy, showing a distinct surface plasmon resonance peak at 273 nm, while Fourier-transform infrared spectroscopy confirmed characteristic Cu-O bonds at 602.84 cm<sup>−1</sup> and 433.39 cm<sup>−1</sup>. X-ray diffraction analysis revealed the monoclinic tenorite phase of CuO-NPs with high crystallinity, whereas the nanoscaffolds exhibited a semi-crystalline structure. scanning electron microscopy imaging demonstrated uniform NP dispersion within the porous, fibrous scaffold matrix. Thermogravimetric analysis indicated thermal stability up to 300°C, and Dynamic light scattering analysis showed NPs with 108 nm average size and moderate colloidal stability (-22.13 mV). The nanocomposites exhibited remarkable concentration-dependent inhibition of α-amylase (80.42 % at 100 µg/mL) and α-glucosidase (79.32 % at 100 µg/mL), significantly outperforming individual components. The enhanced antidiabetic activity is attributed to synergistic interactions between CuO NPs and the polymeric nanoscaffold architecture, which may influence nanoparticle stabilization and enzyme-material interactions. The results highlight the potential of these eco-friendly nanoscaffolds as effective platforms for diabetes management, combining the therapeutic benefits of algal extracts with nanotechnology. Further <em>in vivo</em> studies are warranted to validate their clinical potential.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100195"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An ethanolic extract of Ipomoea carnea (ICLE) leaves was systematically characterised through advanced spectroscopic methods and assessed for its efficacy as a green corrosion inhibitor for aluminium in 0.2–0.4 M HCl solution. The anti-corrosive behaviour of ICLE was scrutinised using diverse analytical techniques, including gravimetric analysis, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), atomic force microscopy (AFM), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDS), and computational modelling such as quantum chemical calculations and MD simulations. ICLE achieved an impressive 96.7 % inhibition rate at 2.0 g/L and 303 K in weight-loss trials, demonstrating potent surface protection at a minimum concentration. EIS data revealed a marked increase in the surface charge-transfer resistance (Rct = 5233.2 Ω·cm²) and a decrease in double-layer capacitance, suggesting the formation of a robust adsorbed passive film. PDP analysis revealed a dual-action inhibition mechanism, which inhibits both anodic and cathodic processes. The overall inhibition efficiency was 93.02 %. Surface morphology studies confirmed the deposition of ICLE molecules, forming a uniform hydrophobic shield. The adsorption behaviour is consistent with the Langmuir model, suggesting single-layer coverage. Compared to other botanical inhibitors, ICLE performed better under harsh, thermally elevated conditions. DFT calculations highlighted that all five molecules derived from the extract are highly reactive species due to their low energy gaps, which is consistent with their nucleophilic character and tendency to donate electrons to the metal surface. Fukui function analysis pinpointed oxygen-bearing groups as key adsorption sites. MD simulations validated the structural integrity of the adsorbed layer.
{"title":"Integrated experimental–theoretical analysis of aluminum corrosion inhibition by ipomoea carnea leaf extract","authors":"Adarsh M. Patel , K.C. Desai , R.T. Vashi , P.S. Desai","doi":"10.1016/j.scowo.2026.100182","DOIUrl":"10.1016/j.scowo.2026.100182","url":null,"abstract":"<div><div>An ethanolic extract of Ipomoea carnea (ICLE) leaves was systematically characterised through advanced spectroscopic methods and assessed for its efficacy as a green corrosion inhibitor for aluminium in 0.2–0.4 M HCl solution. The anti-corrosive behaviour of ICLE was scrutinised using diverse analytical techniques, including gravimetric analysis, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), atomic force microscopy (AFM), scanning electron microscopy coupled with energy dispersive X-ray spectroscopy (SEM/EDS), and computational modelling such as quantum chemical calculations and MD simulations. ICLE achieved an impressive 96.7 % inhibition rate at 2.0 g/L and 303 K in weight-loss trials, demonstrating potent surface protection at a minimum concentration. EIS data revealed a marked increase in the surface charge-transfer resistance (R<sub>ct</sub> = 5233.2 Ω·cm²) and a decrease in double-layer capacitance, suggesting the formation of a robust adsorbed passive film. PDP analysis revealed a dual-action inhibition mechanism, which inhibits both anodic and cathodic processes. The overall inhibition efficiency was 93.02 %. Surface morphology studies confirmed the deposition of ICLE molecules, forming a uniform hydrophobic shield. The adsorption behaviour is consistent with the Langmuir model, suggesting single-layer coverage. Compared to other botanical inhibitors, ICLE performed better under harsh, thermally elevated conditions. DFT calculations highlighted that all five molecules derived from the extract are highly reactive species due to their low energy gaps, which is consistent with their nucleophilic character and tendency to donate electrons to the metal surface. Fukui function analysis pinpointed oxygen-bearing groups as key adsorption sites. MD simulations validated the structural integrity of the adsorbed layer.</div></div>","PeriodicalId":101197,"journal":{"name":"Sustainable Chemistry One World","volume":"9 ","pages":"Article 100182"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145924587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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