Pub Date : 2026-01-05DOI: 10.1016/j.jics.2026.102411
Fujing Wang, Guang Li, Xiangsheng Wang
Scalable and green syntheses of oxygen carriers are crucial for methane chemical looping partial oxidation. To prepare oxygen carriers with abundant oxygen vacancies, H2 treatment and ion doping strategies commonly need multistep and lengthy operations, which are unfavorable for the preparation of oxygen carriers. Herein, a simple and green salt-assisted solvent-free grinding method was carried out for a general preparation of LaFe1-xNixO3. This strategy was easy to scale up and no organic solvent was required. Especially, LaFe0.6Ni0.4O3–3NaCl with massive oxygen vacancies enhanced its methane chemical looping partial oxidation performance with 55.6 % methane conversion, 75.4 % H2 selectivity and 22.7 % CO selectivity due to its rich oxygen vacancies and acid-basic properties, outperforming the LaFe0.6Ni0.4O3 (11.6 % methane conversion, 3.3 % H2 selectivity and no CO generation). Moreover, after 19 cycles, the methane conversion, H2 selectivity and CO selectivity of LaFe0.6Ni0.4O3–3NaCl were still above 45 %, 61 % and 18 %, respectively, showing good stability. The above results imply that the salt-assisted solvent-free grinding method offers a realistic pathway for the highly efficient production of LaFe1-xNixO3 in methane chemical looping partial oxidation.
{"title":"Salt-assisted synthesized LaFe0.6Ni0.4O3 for methane chemical looping partial oxidation","authors":"Fujing Wang, Guang Li, Xiangsheng Wang","doi":"10.1016/j.jics.2026.102411","DOIUrl":"10.1016/j.jics.2026.102411","url":null,"abstract":"<div><div>Scalable and green syntheses of oxygen carriers are crucial for methane chemical looping partial oxidation. To prepare oxygen carriers with abundant oxygen vacancies, H<sub>2</sub> treatment and ion doping strategies commonly need multistep and lengthy operations, which are unfavorable for the preparation of oxygen carriers. Herein, a simple and green salt-assisted solvent-free grinding method was carried out for a general preparation of LaFe<sub>1-x</sub>Ni<sub>x</sub>O<sub>3</sub>. This strategy was easy to scale up and no organic solvent was required. Especially, LaFe<sub>0.6</sub>Ni<sub>0.4</sub>O<sub>3</sub>–3NaCl with massive oxygen vacancies enhanced its methane chemical looping partial oxidation performance with 55.6 % methane conversion, 75.4 % H<sub>2</sub> selectivity and 22.7 % CO selectivity due to its rich oxygen vacancies and acid-basic properties, outperforming the LaFe<sub>0.6</sub>Ni<sub>0.4</sub>O<sub>3</sub> (11.6 % methane conversion, 3.3 % H<sub>2</sub> selectivity and no CO generation). Moreover, after 19 cycles, the methane conversion, H<sub>2</sub> selectivity and CO selectivity of LaFe<sub>0.6</sub>Ni<sub>0.4</sub>O<sub>3</sub>–3NaCl were still above 45 %, 61 % and 18 %, respectively, showing good stability. The above results imply that the salt-assisted solvent-free grinding method offers a realistic pathway for the highly efficient production of LaFe<sub>1-x</sub>Ni<sub>x</sub>O<sub>3</sub> in methane chemical looping partial oxidation.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102411"},"PeriodicalIF":3.4,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-05DOI: 10.1016/j.jics.2026.102409
Godlisten N. Shao , Faraja E. Komba
Inadequate access to safe and clean water contributes to the persistence of waterborne diseases. Purifying contaminated water from various sources using low-cost and affordable ceramic water filters can reduce the problem. In this study, the ceramic water filters were fabricated using locally available materials such as sand, rice husk ashes (RHA) and wheat flour. The sand and rice husk ashes ratio was controlled at 60 and 40 wt%, respectively. Wheat flour at 7.5, 15 and 30 wt% were added to the sand and RHA mixture to improve the physicochemical properties of the final products. The prepared ceramic mixtures were fired at 650 °C and 850 °C to obtain the final products. CuO nanoparticles were incorporated into the obtained calcined ceramic samples using the impregnation method to improve their performance in removing water contaminants. The obtained materials were characterised by XRF, XRD, EDAX, SEM, and TEM analyses. The analyses revealed the formation of a crystalline and porous structure. Pairwise t-test comparison by mean difference at 95 % confidence interval of the samples on the removal efficiency of water contaminants indicated that the CR2-850 ceramic water filter impregnated with CuO nanoparticles had the highest performance. This finding indicates that the ceramic water filters obtained at high temperatures can remove water contaminants and reduce the persistence of waterborne diseases. Therefore, using locally available sources, the present study provides a convenient method to fabricate water filters with suitable properties for removing contaminants such as E. coli, turbidity and heavy metals.
{"title":"Investigation of water treatment performance of copper oxide nanoparticles incorporated ceramic water filter","authors":"Godlisten N. Shao , Faraja E. Komba","doi":"10.1016/j.jics.2026.102409","DOIUrl":"10.1016/j.jics.2026.102409","url":null,"abstract":"<div><div>Inadequate access to safe and clean water contributes to the persistence of waterborne diseases. Purifying contaminated water from various sources using low-cost and affordable ceramic water filters can reduce the problem. In this study, the ceramic water filters were fabricated using locally available materials such as sand, rice husk ashes (RHA) and wheat flour. The sand and rice husk ashes ratio was controlled at 60 and 40 wt%, respectively. Wheat flour at 7.5, 15 and 30 wt% were added to the sand and RHA mixture to improve the physicochemical properties of the final products. The prepared ceramic mixtures were fired at 650 °C and 850 °C to obtain the final products. CuO nanoparticles were incorporated into the obtained calcined ceramic samples using the impregnation method to improve their performance in removing water contaminants. The obtained materials were characterised by XRF, XRD, EDAX, SEM, and TEM analyses. The analyses revealed the formation of a crystalline and porous structure. Pairwise <em>t</em>-test comparison by mean difference at 95 % confidence interval of the samples on the removal efficiency of water contaminants indicated that the CR2-850 ceramic water filter impregnated with CuO nanoparticles had the highest performance. This finding indicates that the ceramic water filters obtained at high temperatures can remove water contaminants and reduce the persistence of waterborne diseases. Therefore, using locally available sources, the present study provides a convenient method to fabricate water filters with suitable properties for removing contaminants such as <em>E. coli</em>, turbidity and heavy metals.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102409"},"PeriodicalIF":3.4,"publicationDate":"2026-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2026.102400
Sheraj Z. Sayyed, Prakash D. Vaidya
Carbon dioxide sorption-enhanced chemical looping reforming (SE-CLR) technology provides a candidate route for hydrogen (H2) generation from bio-oxygenates through a two-step redox process. In this work, SE-CLR of ethanol, glycerol and butanol was investigated in a fixed bed reactor using the oxygen carriers NiO–CaO-HTlc (NCH) and Ce–NiO–CaO-HTlc (or CNCH, here, HTlc denotes hydrotalcite-like materials). Oxygen carriers (OC) were synthesized using impregnation method and characterized using BET method (or Brunauer-Emmett-Teller method), XRD (X-ray diffraction) and SEM-EDX (scanning electron microscopy-energy dispersive X-ray spectroscopy). The reduction stage of the CLR process was performed using 2 g OC between 673 and 873 K. Weight hourly space velocity (WHSV) was varied in the 0.44–1.79 mL/g-min range. For the reaction of ethanol over NCH carrier, H2 formation rate (0.48 mmol/g-min) was maximized during reduction at T = 773 K and WHSV = 1.79 mL/g-min. A dead time was initially observed during the SE-CLR tests. Pre-breakthough periods for NCH (15 min) and CNCH (30 min) were observed; thereafter, the presence of CO2 in the product was evident. The highest concentration of H2 during the reactions of glycerol, butanol and ethanol over CNCH was 26.2, 21.7 and 18.6 %; correspondingly, the highest CO2 content of the product was 3.7, 4.4 and 2.3 %. Traces of methane were detected in the product. The oxidation stage yielded a maximum of 4.1 % CO2 during SE-CLR of glycerol. CNCH was successfully tested for 18 redox cycles. On an average, H2 and CO2 formation rates during reduction were 0.43 and 0.08 mmol/g-min. Clearly, the outcomes suggested that the application of the chosen materials for SE-CLR of bio-oxygenates was encouraging.
{"title":"Sorption-enhanced chemical looping reforming (SE-CLR) of ethanol, glycerol and butanol over hydrotalcite-based multifunctional materials for improved hydrogen production","authors":"Sheraj Z. Sayyed, Prakash D. Vaidya","doi":"10.1016/j.jics.2026.102400","DOIUrl":"10.1016/j.jics.2026.102400","url":null,"abstract":"<div><div>Carbon dioxide sorption-enhanced chemical looping reforming (SE-CLR) technology provides a candidate route for hydrogen (H<sub>2</sub>) generation from bio-oxygenates through a two-step redox process. In this work, SE-CLR of ethanol, glycerol and butanol was investigated in a fixed bed reactor using the oxygen carriers NiO–CaO-HTlc (NCH) and Ce–NiO–CaO-HTlc (or CNCH, here, HTlc denotes hydrotalcite-like materials). Oxygen carriers (OC) were synthesized using impregnation method and characterized using BET method (or Brunauer-Emmett-Teller method), XRD (X-ray diffraction) and SEM-EDX (scanning electron microscopy-energy dispersive X-ray spectroscopy). The reduction stage of the CLR process was performed using 2 g OC between 673 and 873 K. Weight hourly space velocity (WHSV) was varied in the 0.44–1.79 mL/g-min range. For the reaction of ethanol over NCH carrier, H<sub>2</sub> formation rate (0.48 mmol/g-min) was maximized during reduction at T = 773 K and WHSV = 1.79 mL/g-min. A dead time was initially observed during the SE-CLR tests. Pre-breakthough periods for NCH (15 min) and CNCH (30 min) were observed; thereafter, the presence of CO<sub>2</sub> in the product was evident. The highest concentration of H<sub>2</sub> during the reactions of glycerol, butanol and ethanol over CNCH was 26.2, 21.7 and 18.6 %; correspondingly, the highest CO<sub>2</sub> content of the product was 3.7, 4.4 and 2.3 %. Traces of methane were detected in the product. The oxidation stage yielded a maximum of 4.1 % CO<sub>2</sub> during SE-CLR of glycerol. CNCH was successfully tested for 18 redox cycles. On an average, H<sub>2</sub> and CO<sub>2</sub> formation rates during reduction were 0.43 and 0.08 mmol/g-min. Clearly, the outcomes suggested that the application of the chosen materials for SE-CLR of bio-oxygenates was encouraging.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102400"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2026.102406
S. Anuja , J.A.F.C.R. Rodrigues , R. Suresh Babu , A. Kosiha , A.L.F. de Barros
An innovative core–shell nanoparticle system comprising a silica (SiO2) core and a ruthenium hexacyanoferrate (RuHCF) shell was successfully synthesized. The structural and optical behaviour of the resulting SiO2@RuHCF nanoparticles (NPs) were characterized by UV–visible spectroscopy. The surface morphology and nanoscale architecture were further elucidated through field-emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM), confirming the successful encapsulation of RuHCF on the silica core. The electrochemical functionality of the synthesized SiO2@RuHCF-NPs was explored by incorporating them into a paraffin wax-impregnated graphite electrode (PIGE) via mechanical immobilization, forming an electroactive redox mediator system. The modified electrode was characterized by voltammetric methods and demonstrated excellent electrocatalytic activity toward the riboflavin reduction. The developed riboflavin sensor exhibited a fast response time of 4 s, a low detection limit of 1.4 × 10−7 M, a broad linear range of 4.3–2600 μM, high sensitivity 0.204 μA/μM, and showed good stability and repeatability. These features highlight the sensor's potential for practical applications. Furthermore, the modified electrode also facilitated oxygen evolution in alkaline medium, achieving an optimal current density of 10 mA cm−2 at overpotential of just 560 mV from the thermodynamic potential of 1.23 V, indicating its promise for electrocatalytic applications.
成功地合成了一种由二氧化硅（SiO2）核和六氰高铁钌（RuHCF）壳组成的新型核-壳纳米颗粒体系。利用紫外可见光谱对所得SiO2@RuHCF纳米粒子（NPs）的结构和光学行为进行了表征。通过场发射扫描电镜（FESEM）和高分辨率透射电镜（HRTEM）进一步分析了表面形貌和纳米尺度结构，证实了RuHCF在二氧化硅核上的成功封装。通过机械固定将合成的SiO2@RuHCF-NPs加入到石蜡浸渍石墨电极（PIGE）中，形成电活性氧化还原介质体系，考察其电化学功能。用伏安法对修饰电极进行了表征，并对核黄素还原表现出良好的电催化活性。该传感器响应时间快，可达4 s，检出限1.4 × 10−7 M，线性范围4.3 ~ 2600 μM，灵敏度0.204 μA/μM，具有良好的稳定性和重复性。这些特点突出了传感器在实际应用中的潜力。此外，改性电极还促进了碱性介质中的氧气析出，在过电位仅为560 mV时达到10 mA cm - 2的最佳电流密度，热力学势为1.23 V，表明其有望用于电催化应用。
{"title":"Core–shell Silica–Ruthenium hexacyanoferrate nanoparticles modified electrode as efficient electrocatalyst for riboflavin detection and oxygen evolution reaction","authors":"S. Anuja , J.A.F.C.R. Rodrigues , R. Suresh Babu , A. Kosiha , A.L.F. de Barros","doi":"10.1016/j.jics.2026.102406","DOIUrl":"10.1016/j.jics.2026.102406","url":null,"abstract":"<div><div>An innovative core–shell nanoparticle system comprising a silica (SiO<sub>2</sub>) core and a ruthenium hexacyanoferrate (RuHCF) shell was successfully synthesized. The structural and optical behaviour of the resulting SiO<sub>2</sub>@RuHCF nanoparticles (NPs) were characterized by UV–visible spectroscopy. The surface morphology and nanoscale architecture were further elucidated through field-emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM), confirming the successful encapsulation of RuHCF on the silica core. The electrochemical functionality of the synthesized SiO<sub>2</sub>@RuHCF-NPs was explored by incorporating them into a paraffin wax-impregnated graphite electrode (PIGE) via mechanical immobilization, forming an electroactive redox mediator system. The modified electrode was characterized by voltammetric methods and demonstrated excellent electrocatalytic activity toward the riboflavin reduction. The developed riboflavin sensor exhibited a fast response time of 4 s, a low detection limit of 1.4 × 10<sup>−7</sup> M, a broad linear range of 4.3–2600 μM, high sensitivity 0.204 μA/μM, and showed good stability and repeatability. These features highlight the sensor's potential for practical applications. Furthermore, the modified electrode also facilitated oxygen evolution in alkaline medium, achieving an optimal current density of 10 mA cm<sup>−2</sup> at overpotential of just 560 mV from the thermodynamic potential of 1.23 V, indicating its promise for electrocatalytic applications.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102406"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2026.102407
Mohamed E.I. Badawy , Aya R.M. Shinqar
A rapid and very sensitive colorimetric tool depending on silver nanoparticles functionalized with sulfanilic acid (AgNPs-SA) was developed to detect and determine carbendazim and malathion residues in food and water samples concurrently. The dispersed nanoparticle AgNPs-SA showed high localized surface plasmon resonance (LSPR) of 420 nm, but when interacted with carbendazim and malathion, the nanoparticles were bound together to show evident red-shifting to form new distinctive absorption pockets at 540 nm and 515 nm, respectively. The method of detection is based on the selective chelation of the functional groups of pesticides (CO, PS, –NH, and -S-) with the surface AgNPs-SA, followed by aggregation in concentration-dependent interactions. The method demonstrated high sensitivity, with limit of detection (LOD) of 0.029 μg/mL for carbendazim and 0.064 μg/mL for malathion, lower than those of most conventional methods. Selectivity was enhanced by pH adjustment (5-11), which exploited differences in analyte ionization. The method was successfully applied to spiked irrigation water, tomato, and guava fruit samples, achieving recoveries of 87.16–99.61 % with minimal matrix interference. The given chemical sensor offers a valuable replacement to on-site monitoring of pesticide residues in both agricultural and environmental samples through chromatographic methods.
{"title":"Highly sensitive procedure based on silver nanoparticles functionalized with sulfanilic acid for rapid detection of carbendazim and malathion residues in water and food samples","authors":"Mohamed E.I. Badawy , Aya R.M. Shinqar","doi":"10.1016/j.jics.2026.102407","DOIUrl":"10.1016/j.jics.2026.102407","url":null,"abstract":"<div><div>A rapid and very sensitive colorimetric tool depending on silver nanoparticles functionalized with sulfanilic acid (AgNPs-SA) was developed to detect and determine carbendazim and malathion residues in food and water samples concurrently. The dispersed nanoparticle AgNPs-SA showed high localized surface plasmon resonance (LSPR) of 420 nm, but when interacted with carbendazim and malathion, the nanoparticles were bound together to show evident red-shifting to form new distinctive absorption pockets at 540 nm and 515 nm, respectively. The method of detection is based on the selective chelation of the functional groups of pesticides (C<img>O, P<img>S, –NH, and -S-) with the surface AgNPs-SA, followed by aggregation in concentration-dependent interactions. The method demonstrated high sensitivity, with limit of detection (LOD) of 0.029 μg/mL for carbendazim and 0.064 μg/mL for malathion, lower than those of most conventional methods. Selectivity was enhanced by pH adjustment (5-11), which exploited differences in analyte ionization. The method was successfully applied to spiked irrigation water, tomato, and guava fruit samples, achieving recoveries of 87.16–99.61 % with minimal matrix interference. The given chemical sensor offers a valuable replacement to on-site monitoring of pesticide residues in both agricultural and environmental samples through chromatographic methods.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102407"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2026.102408
Damla Kübra Gürlenkaya , Levent Gürel
In this study, it was aimed to investigate the usability of Borlotti bean, green pea, and raw pumpkin seed shells, which are produced in large quantities as waste and sent to landfill sites, as alternatives to commercial adsorbents in the removal of Cationic G. Yellow X-GL dye from textile wastewater. In adsorption studies, the most suitable initial pH value for all adsorbents used was found to be 10 and adsorption capacities were 32.01, 26.13 and 20.72 mg/g for raw pumpkin seed shells (RPSS), acid-treated green pea shells (ATGPS) and acid-treated borlotti bean shells (ATBBS) at a dosage of 0.1 g/100 mL. The highest dye removal (%) of approximately 95 % was obtained by using RPSS at a dosage of 1 g/100 mL. The data was suited perfectly to Freundlich and Langmuir models except ATBBS only to Freundlich model. Pseudo second-order reaction model is the most convenient kinetic model with an R2 of 0.99 for entire adsorbents. Characterization studies exhibited various functional groups on three adsorbents. The results showed that RPSS gave the best performance among the adsorbents and that all adsorbents could be alternative adsorbent candidates due to their abundant availability and sufficient adsorption performance.
{"title":"Assessment of foodstuff wastes as possible adsorbents for real cationic textile dye removal","authors":"Damla Kübra Gürlenkaya , Levent Gürel","doi":"10.1016/j.jics.2026.102408","DOIUrl":"10.1016/j.jics.2026.102408","url":null,"abstract":"<div><div>In this study, it was aimed to investigate the usability of Borlotti bean, green pea, and raw pumpkin seed shells, which are produced in large quantities as waste and sent to landfill sites, as alternatives to commercial adsorbents in the removal of Cationic G. Yellow X-GL dye from textile wastewater. In adsorption studies, the most suitable initial pH value for all adsorbents used was found to be 10 and adsorption capacities were 32.01, 26.13 and 20.72 mg/g for raw pumpkin seed shells (RPSS), acid-treated green pea shells (ATGPS) and acid-treated borlotti bean shells (ATBBS) at a dosage of 0.1 g/100 mL. The highest dye removal (%) of approximately 95 % was obtained by using RPSS at a dosage of 1 g/100 mL. The data was suited perfectly to Freundlich and Langmuir models except ATBBS only to Freundlich model. Pseudo second-order reaction model is the most convenient kinetic model with an R<sup>2</sup> of 0.99 for entire adsorbents. Characterization studies exhibited various functional groups on three adsorbents. The results showed that RPSS gave the best performance among the adsorbents and that all adsorbents could be alternative adsorbent candidates due to their abundant availability and sufficient adsorption performance.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102408"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2025.102394
Hanieh Samadi, Majid Saidi
This study investigates the simultaneous production and purification of hydrogen from bio-waste glycerol, a byproduct of biodiesel production, through steam reforming in membrane reactor. To analyze the process, two-dimensional axisymmetric computational fluid dynamics model was developed in COMSOL Multiphysics. The model was designed and validated to examine the distribution of chemical species concentrations under operational conditions, including a steam-to-glycerol ratio of 6, pressure of 1 atm, and sweep gas ratio of 10. The performance of Ni/Al2O3, Co/Al2O3, and Ru/Al2O3catalysts was compared to evaluate their effects on conversion, hydrogen yield and recovery. The results showed conversion of 56.43 % at 673 K and 87.7 % at 773 K. These results closely align with experimental data for nickel catalyst (60 % and 87.9 %, respectively), with relative errors of 5.95 % and 0.23 %, respectively. The Ru/Al2O3catalyst exhibited superior performance in terms of activity and stability. The Ru/Al2O3 catalyst achieved a maximum hydrogen yield of 93 % at 973 K and, under baseline conditions of S/C = 6, 1 atm pressure, and SF = 10, outperformed Ni/Al2O3 (85 %) and Co/Al2O3 (80 %). This superior activity, along with enhanced resistance to coking, reinforces Ru/Al2O3 as an efficient option for sustainable hydrogen production from biodiesel byproducts. Increasing temperature improved glycerol conversion and hydrogen recovery, while higher pressure enhanced hydrogen permeability through the membrane. Optimizing operational pressure is essential, as it may negatively affect reaction equilibrium. The results of this study highlight the potential of using the Ru/Al2O3catalyst and determining optimal operational conditions to achieve efficient and sustainable hydrogen production from bio-waste glycerol.
{"title":"Bio-waste glycerol steam reforming to hydrogen through membrane reactor: Application of computational fluid dynamics technique","authors":"Hanieh Samadi, Majid Saidi","doi":"10.1016/j.jics.2025.102394","DOIUrl":"10.1016/j.jics.2025.102394","url":null,"abstract":"<div><div>This study investigates the simultaneous production and purification of hydrogen from bio-waste glycerol, a byproduct of biodiesel production, through steam reforming in membrane reactor. To analyze the process, two-dimensional axisymmetric computational fluid dynamics model was developed in COMSOL Multiphysics. The model was designed and validated to examine the distribution of chemical species concentrations under operational conditions, including a steam-to-glycerol ratio of 6, pressure of 1 atm, and sweep gas ratio of 10. The performance of Ni/Al<sub>2</sub>O<sub>3</sub>, Co/Al<sub>2</sub>O<sub>3</sub>, and Ru/Al<sub>2</sub>O<sub>3</sub>catalysts was compared to evaluate their effects on conversion, hydrogen yield and recovery. The results showed conversion of 56.43 % at 673 K and 87.7 % at 773 K. These results closely align with experimental data for nickel catalyst (60 % and 87.9 %, respectively), with relative errors of 5.95 % and 0.23 %, respectively. The Ru/Al<sub>2</sub>O<sub>3</sub>catalyst exhibited superior performance in terms of activity and stability. The Ru/Al<sub>2</sub>O<sub>3</sub> catalyst achieved a maximum hydrogen yield of 93 % at 973 K and, under baseline conditions of S/C = 6, 1 atm pressure, and SF = 10, outperformed Ni/Al<sub>2</sub>O<sub>3</sub> (85 %) and Co/Al<sub>2</sub>O<sub>3</sub> (80 %). This superior activity, along with enhanced resistance to coking, reinforces Ru/Al<sub>2</sub>O<sub>3</sub> as an efficient option for sustainable hydrogen production from biodiesel byproducts. Increasing temperature improved glycerol conversion and hydrogen recovery, while higher pressure enhanced hydrogen permeability through the membrane. Optimizing operational pressure is essential, as it may negatively affect reaction equilibrium. The results of this study highlight the potential of using the Ru/Al<sub>2</sub>O<sub>3</sub>catalyst and determining optimal operational conditions to achieve efficient and sustainable hydrogen production from bio-waste glycerol.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102394"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-01-03DOI: 10.1016/j.jics.2026.102404
Sonali P. Jadhav , Parag R. Gogate
The current study explores the treatment of Sunset Yellow dye using hydrodynamic cavitation (HC), ultrasonic horn (US), and their combinations with UV light and different oxidants. Experiments showed that the best operating conditions for HC were a dye concentration of 20 ppm, pH 10, and an inlet pressure of 2 bar. Under these settings, HC alone removed 56.09 % of the dye and achieved a 12.48 % reduction in COD, while the US alone was less effective, reaching only 29.25 % decolorization. The addition of oxidants and catalysts noticeably strengthened the process. Titanium dioxide (TiO2) at 0.8 g/L as optimum loading led to 78.25 % removal, and hydrogen peroxide (H2O2) at 1 g/L resulted in higher degradation as 84.44 %. Among all additives, potassium persulfate (KPS) (1 g/L) delivered the best performance, reaching 97.31 % removal when combined with HC. Overall, systems coupling HC with UV and suitable additives performed far better than cavitation alone, with the HC + UV + KPS setup achieving complete colour removal and a 72.22 % in COD reduction. Overall, results clearly show that combining cavitation with UV irradiation and oxidants in optimum amount results in a much more effective treatment route for Sunset Yellow degradation than any single technique used independently.
{"title":"Degradation of sunset yellow dye using hydrodynamic cavitation and ultrasonic horn assisted by UV irradiation and chemical additives","authors":"Sonali P. Jadhav , Parag R. Gogate","doi":"10.1016/j.jics.2026.102404","DOIUrl":"10.1016/j.jics.2026.102404","url":null,"abstract":"<div><div>The current study explores the treatment of Sunset Yellow dye using hydrodynamic cavitation (HC), ultrasonic horn (US), and their combinations with UV light and different oxidants. Experiments showed that the best operating conditions for HC were a dye concentration of 20 ppm, pH 10, and an inlet pressure of 2 bar. Under these settings, HC alone removed 56.09 % of the dye and achieved a 12.48 % reduction in COD, while the US alone was less effective, reaching only 29.25 % decolorization. The addition of oxidants and catalysts noticeably strengthened the process. Titanium dioxide (TiO<sub>2</sub>) at 0.8 g/L as optimum loading led to 78.25 % removal, and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) at 1 g/L resulted in higher degradation as 84.44 %. Among all additives, potassium persulfate (KPS) (1 g/L) delivered the best performance, reaching 97.31 % removal when combined with HC. Overall, systems coupling HC with UV and suitable additives performed far better than cavitation alone, with the HC + UV + KPS setup achieving complete colour removal and a 72.22 % in COD reduction. Overall, results clearly show that combining cavitation with UV irradiation and oxidants in optimum amount results in a much more effective treatment route for Sunset Yellow degradation than any single technique used independently.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102404"},"PeriodicalIF":3.4,"publicationDate":"2026-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrochemical supercapacitors (ESCs) have emerged as promising energy storage devices owing to their high-power density, rapid charge–discharge capability, and excellent cyclic stability. The performance of ESCs is largely governed by the intrinsic properties of electrode materials. In this work, we introduce ferrous hydroxide (Fe(OH)2) nanostructures synthesized via a microwave-assisted (2.45 GHz) route as an environmentally benign and efficient electrode material for supercapacitor applications. The electrodes were fabricated by depositing Fe(OH)2 nanostructures on indium tin oxide (ITO)-coated glass substrates exhibiting a large electroactive surface area and improved ion transport. The resulting electrodes delivers a high specific capacitance of 859 F/g with power density of 238.6 kW/kg and energy density of 745.66 Wh/kg at 0.5 A g−1 in KOH electrolyte of pH value of 12. Notably, they retained 85.5 % capacitance after 12,000 cycles, underscoring exceptional stability. The Fe(OH)2 nanostructures are assured as a high-performance and environmentally benign electrode material, highlighting its strong potential for next-generation sustainable ESCs.
电化学超级电容器因其高功率密度、快速充放电能力和优异的循环稳定性而成为一种很有前途的储能器件。ESCs的性能在很大程度上取决于电极材料的固有特性。在这项工作中，我们介绍了通过微波辅助（2.45 GHz）路线合成的氢氧化铁（Fe(OH)2）纳米结构，作为超级电容器应用的环保高效电极材料。通过将Fe(OH)2纳米结构沉积在氧化铟锡（ITO）涂层的玻璃衬底上制备电极，显示出大的电活性表面积和改善的离子传输。在pH值为12的KOH电解液中，在0.5 a g−1条件下，电极的比电容高达859 F/g，功率密度为238.6 kW/kg，能量密度为745.66 Wh/kg。值得注意的是，在12,000次循环后，它们保持了85.5%的电容，强调了卓越的稳定性。Fe(OH)2纳米结构是一种高性能、环保的电极材料，突出了其在下一代可持续ESCs中的强大潜力。
{"title":"Ferrous hydroxide nanostructures as a stable electrode material for electrochemical supercapacitors","authors":"Partha Pratim Sahu, Palash Phukan, Jagat Das, Mousumi Deori","doi":"10.1016/j.jics.2025.102378","DOIUrl":"10.1016/j.jics.2025.102378","url":null,"abstract":"<div><div>Electrochemical supercapacitors (ESCs) have emerged as promising energy storage devices owing to their high-power density, rapid charge–discharge capability, and excellent cyclic stability. The performance of ESCs is largely governed by the intrinsic properties of electrode materials. In this work, we introduce ferrous hydroxide (Fe(OH)<sub>2</sub>) nanostructures synthesized via a microwave-assisted (2.45 GHz) route as an environmentally benign and efficient electrode material for supercapacitor applications. The electrodes were fabricated by depositing Fe(OH)<sub>2</sub> nanostructures on indium tin oxide (ITO)-coated glass substrates exhibiting a large electroactive surface area and improved ion transport. The resulting electrodes delivers a high specific capacitance of 859 F/g with power density of 238.6 kW/kg and energy density of 745.66 Wh/kg at 0.5 A g<sup>−1</sup> in KOH electrolyte of pH value of 12. Notably, they retained 85.5 % capacitance after 12,000 cycles, underscoring exceptional stability. The Fe(OH)<sub>2</sub> nanostructures are assured as a high-performance and environmentally benign electrode material, highlighting its strong potential for next-generation sustainable ESCs.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102378"},"PeriodicalIF":3.4,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Parkinson's Disease (PD) is a progressive neurodegenerative disorder that results in the loss of dopamine-producing neurons, leading to various motor and non-motor symptoms. Current treatments primarily provide symptomatic relief but fail to address disease progression. In this study, 39 pyrimidine derivatives were investigated as potential therapeutic agents for PD using an integrated approach combining network pharmacology, molecular docking, and molecular dynamics (MD) simulations. Network pharmacology identified PI3Kγ and JAK2 as the top two key receptors involved in PD, with compound P23 targeting these proteins effectively. Molecular docking revealed that compound P23 exhibited strong binding affinity with both the 7Q7I (JAK2 tyrosine kinase receptor) and 7R9V (PI3Kγ complex) proteins, with docking scores of −9.5 kcal/mol and −9.7 kcal/mol, respectively, surpassing the co-crystallized ligands and reference drugs. MD simulations (200 ns) demonstrated the stability and flexibility of the protein-ligand complexes, and MM/GBSA calculations confirmed the strong binding interactions of compound P23. The results suggest that pyrimidine derivatives could modulate key signaling pathways associated with PD, offering a promising avenue for the development of novel PD therapies.
{"title":"Investigation of pyrimidine derivatives for Parkinson's disease: An integrated approach of network pharmacology, molecular docking, and MD simulation","authors":"Pushpaveni Chakravarthi , Biswaranjan Patra , Sneha Wali , Subhas S. Karki","doi":"10.1016/j.jics.2025.102390","DOIUrl":"10.1016/j.jics.2025.102390","url":null,"abstract":"<div><div>Parkinson's Disease (PD) is a progressive neurodegenerative disorder that results in the loss of dopamine-producing neurons, leading to various motor and non-motor symptoms. Current treatments primarily provide symptomatic relief but fail to address disease progression. In this study, 39 pyrimidine derivatives were investigated as potential therapeutic agents for PD using an integrated approach combining network pharmacology, molecular docking, and molecular dynamics (MD) simulations. Network pharmacology identified PI3Kγ and JAK2 as the top two key receptors involved in PD, with compound P23 targeting these proteins effectively. Molecular docking revealed that compound P23 exhibited strong binding affinity with both the 7Q7I (JAK2 tyrosine kinase receptor) and 7R9V (PI3Kγ complex) proteins, with docking scores of −9.5 kcal/mol and −9.7 kcal/mol, respectively, surpassing the co-crystallized ligands and reference drugs. MD simulations (200 ns) demonstrated the stability and flexibility of the protein-ligand complexes, and MM/GBSA calculations confirmed the strong binding interactions of compound P23. The results suggest that pyrimidine derivatives could modulate key signaling pathways associated with PD, offering a promising avenue for the development of novel PD therapies.</div></div>","PeriodicalId":17276,"journal":{"name":"Journal of the Indian Chemical Society","volume":"103 2","pages":"Article 102390"},"PeriodicalIF":3.4,"publicationDate":"2026-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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