Pub Date : 2025-02-20DOI: 10.1016/j.hybadv.2025.100420
A. Muthuganesh , S. Mohamed Rafi , I. Davis Jacob , J.P. Soundranayagam , S. Surender , P. Elangovan , X. Helan Flora
In this work, pure and heterostructured g-C3N4/CuO photocatalyst materials were prepared using a combination of thermal decomposition and hydrothermal techniques. The phase and purity of the catalysts were examined using powder X-ray diffraction (XRD). The prepared catalysts were also assessed using different systematic techniques, which demonstrated that the addition of CuO to the g-C3N4 matrix significantly altered the particle size, crystallinity, morphology, and energy bandgap. Heterojunction formation and interfacial contact between CuO and g-C3N4were confirmed by TEM and XPS analyses. The photocatalytic activity of the g-C3N4/CuO nanocomposite was assessed by its ability to break down Methylene Blue (MB), an organic contaminant, under visible-light exposure. Remarkably, the g-C3N4/CuO catalyst demonstrated rapid photocatalytic degradation of MB, achieving 98 % breakdown within 40 min. The increased degradation efficiency of g-C3N4/CuO is due to its lower energy bandgap, enhanced charge transport, and lower charge recombination compared to pure CuO and g-C3N4. Therefore, constructing a g-C3N4/CuO heterostructure could be a promising technique for sewer water treatment.
{"title":"Efficient methylene blue dye degradation via visible light-activated g-C3N4/CuO nanocomposites","authors":"A. Muthuganesh , S. Mohamed Rafi , I. Davis Jacob , J.P. Soundranayagam , S. Surender , P. Elangovan , X. Helan Flora","doi":"10.1016/j.hybadv.2025.100420","DOIUrl":"10.1016/j.hybadv.2025.100420","url":null,"abstract":"<div><div>In this work, pure and heterostructured g-C<sub>3</sub>N<sub>4</sub>/CuO photocatalyst materials were prepared using a combination of thermal decomposition and hydrothermal techniques. The phase and purity of the catalysts were examined using powder X-ray diffraction (XRD). The prepared catalysts were also assessed using different systematic techniques, which demonstrated that the addition of CuO to the g-C<sub>3</sub>N<sub>4</sub> matrix significantly altered the particle size, crystallinity, morphology, and energy bandgap. Heterojunction formation and interfacial contact between CuO and g-C<sub>3</sub>N<sub>4</sub>were confirmed by TEM and XPS analyses. The photocatalytic activity of the g-C<sub>3</sub>N<sub>4</sub>/CuO nanocomposite was assessed by its ability to break down Methylene Blue (MB), an organic contaminant, under visible-light exposure. Remarkably, the g-C<sub>3</sub>N<sub>4</sub>/CuO catalyst demonstrated rapid photocatalytic degradation of MB, achieving 98 % breakdown within 40 min. The increased degradation efficiency of g-C<sub>3</sub>N<sub>4</sub>/CuO is due to its lower energy bandgap, enhanced charge transport, and lower charge recombination compared to pure CuO and g-C<sub>3</sub>N<sub>4</sub>. Therefore, constructing a g-C<sub>3</sub>N<sub>4</sub>/CuO heterostructure could be a promising technique for sewer water treatment.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100420"},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-19DOI: 10.1016/j.hybadv.2025.100416
Nugroho Karya Yudha , Alvin Dio Nugroho , Wahyu Erlangga , Jamasri , Bodo Fiedler , Muhammad Akhsin Muflikhun
This study investigates the mechanical and structural properties of bamboo-glass fiber hybrid composites with the aim of optimizing strength-to-weight performance for advanced engineering applications. Composites were fabricated using the Vacuum-Assisted Resin Infusion (VARI) method to ensure uniform resin distribution and reduced void content. Four configurations—bamboo (BBBB), glass (GGGG), and hybrids (BGGB, GBBG)—were analyzed. GGGG exhibited the highest density (1.697 g/cm3) and tensile strength (125.86 MPa), while BBBB demonstrated the lowest density (0.954 g/cm3), highlighting bamboo lightweight advantage. Hybrid composites improved tensile strength by 24–30 % and flexural strength by 16–58 % compared to pure bamboo composites, with BGGB achieving superior tensile performance (87.24 MPa) and GBBG excelling in flexural strength (99.16 MPa). Specific tensile strength showed BGGB as the most efficient (86.39 MPa/g/cm3), followed by GBBG, while specific flexural strength revealed GGGG as the highest (108.76 MPa/g/cm3), with GBBG offering a balanced performance (97.4 MPa/g/cm3). The stacking sequence significantly influenced the performance, with BGGB optimizing the tensile stress distribution and GBBG enhancing the load transfer through glass fibers in the outer layers. Microstructural and FTIR analyses revealed that the hydrophilic and porous nature of bamboo weakened interfacial bonding, while glass fibers formed strong chemical bonds, improving rigidity and load transfer. These findings highlight the potential of bamboo-glass hybrid composites as sustainable, lightweight, and high-performance materials suitable for applications in sports equipment, automotive components, and other advanced engineering applications.
{"title":"Sustainable high-performance materials: The role of bamboo and glass fibers in hybrid composites","authors":"Nugroho Karya Yudha , Alvin Dio Nugroho , Wahyu Erlangga , Jamasri , Bodo Fiedler , Muhammad Akhsin Muflikhun","doi":"10.1016/j.hybadv.2025.100416","DOIUrl":"10.1016/j.hybadv.2025.100416","url":null,"abstract":"<div><div>This study investigates the mechanical and structural properties of bamboo-glass fiber hybrid composites with the aim of optimizing strength-to-weight performance for advanced engineering applications. Composites were fabricated using the Vacuum-Assisted Resin Infusion (VARI) method to ensure uniform resin distribution and reduced void content. Four configurations—bamboo (BBBB), glass (GGGG), and hybrids (BGGB, GBBG)—were analyzed. GGGG exhibited the highest density (1.697 g/cm<sup>3</sup>) and tensile strength (125.86 MPa), while BBBB demonstrated the lowest density (0.954 g/cm<sup>3</sup>), highlighting bamboo lightweight advantage. Hybrid composites improved tensile strength by 24–30 % and flexural strength by 16–58 % compared to pure bamboo composites, with BGGB achieving superior tensile performance (87.24 MPa) and GBBG excelling in flexural strength (99.16 MPa). Specific tensile strength showed BGGB as the most efficient (86.39 MPa/g/cm<sup>3</sup>), followed by GBBG, while specific flexural strength revealed GGGG as the highest (108.76 MPa/g/cm<sup>3</sup>), with GBBG offering a balanced performance (97.4 MPa/g/cm<sup>3</sup>). The stacking sequence significantly influenced the performance, with BGGB optimizing the tensile stress distribution and GBBG enhancing the load transfer through glass fibers in the outer layers. Microstructural and FTIR analyses revealed that the hydrophilic and porous nature of bamboo weakened interfacial bonding, while glass fibers formed strong chemical bonds, improving rigidity and load transfer. These findings highlight the potential of bamboo-glass hybrid composites as sustainable, lightweight, and high-performance materials suitable for applications in sports equipment, automotive components, and other advanced engineering applications.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100416"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-19DOI: 10.1016/j.hybadv.2025.100418
Great Iruoghene Edo , Winifred Ndudi , AliB.M. Ali , Emad Yousif , Agatha Ngukuran Jikah , Endurance Fegor Isoje , Ufuoma Augustina Igbuku , Alice Njolke Mafe , Rapheal Ajiri Opiti , Chioma Judith Madueke , Arthur Efeoghene Athan Essaghah , Dina S. Ahmed , Huzaifa Umar
Biopolymers are composed of recurring units of similar or same monomers joined together and are either derived from biological systems or manufactured from biological sources. Been a leading class of functional materials that are apposite for high-value applications, biopolymers are utilized in the food, petroleum, medical and pharmaceutical industries for various purposes. Moreover, naturally occurring biopolymers such as starch, proteins, rubber, cellulose, chitin, RNA, peptides and DNA been biodegradable, were thought of as suitable alternatives to the synthetic ones which came from fossil fuel sources and had adverse environmental effects. Moving forward, many biopolymers have and are still been produced to meet ever increasing demands. This paper presents an all inclusive review of biopolymers, their polymer backbone, impacts on environment, and methods of degradation, uses, chemical modification of biopolymers for the creation of hydrogels used in medicine, economic impact and future outlook.
{"title":"Biopolymers: An inclusive review","authors":"Great Iruoghene Edo , Winifred Ndudi , AliB.M. Ali , Emad Yousif , Agatha Ngukuran Jikah , Endurance Fegor Isoje , Ufuoma Augustina Igbuku , Alice Njolke Mafe , Rapheal Ajiri Opiti , Chioma Judith Madueke , Arthur Efeoghene Athan Essaghah , Dina S. Ahmed , Huzaifa Umar","doi":"10.1016/j.hybadv.2025.100418","DOIUrl":"10.1016/j.hybadv.2025.100418","url":null,"abstract":"<div><div>Biopolymers are composed of recurring units of similar or same monomers joined together and are either derived from biological systems or manufactured from biological sources. Been a leading class of functional materials that are apposite for high-value applications, biopolymers are utilized in the food, petroleum, medical and pharmaceutical industries for various purposes. Moreover, naturally occurring biopolymers such as starch, proteins, rubber, cellulose, chitin, RNA, peptides and DNA been biodegradable, were thought of as suitable alternatives to the synthetic ones which came from fossil fuel sources and had adverse environmental effects. Moving forward, many biopolymers have and are still been produced to meet ever increasing demands. This paper presents an all inclusive review of biopolymers, their polymer backbone, impacts on environment, and methods of degradation, uses, chemical modification of biopolymers for the creation of hydrogels used in medicine, economic impact and future outlook.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100418"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-17DOI: 10.1016/j.hybadv.2025.100408
Syed M. Hasnain , Abid Iqbal , Irfan Qasim , Kamran Irshad , M. Amin Mir , Muhammad Imran Malik , L. Syam Sundar
Perovskite solar cells have made substantial progress in efficiency and technology for the future photovoltaic systems. Study investigates effect of absorber layer composition on effectiveness power conversion efficiency of solar cell configured with ITO/ZnO/MASnI3/CuSCN/Au and ITO/ZnO/BaZrS3/CuSCN/Au material. Using SCAPS-1D simulation tool, the optimized structural layer thicknesses, maximize device efficiency was analyzed. The MASnI3-based perovskite solar cells consistently outperformed their BaZrS3 counterparts, with optimized thicknesses of 0.03 μm for the ZnO layer and 0.8 μm for the MASnI3 absorber layer, yielding a PCE of 20.17 %, an open-circuit voltage (Voc) of 0.8378 V, a short-circuit current density (Jsc) of 34.18 mA/cm2 and a fill factor (FF) of 70.45 %. Conversely, the BaZrS3-based cells, with optimal thicknesses of 0.04 μm for the ZnO layer and 0.50 μm for the BaZrS3 absorber layer, achieved a PCE of 8.28 %, a Voc of 1.3758 V, a Jsc of 13.92 mA/cm2, and an FF of 43.24 %.
{"title":"Performance evaluation of organometal halide MASnI3 and inorganic BaZrS3 hybrids in perovskites solar cells: Theoretical approach","authors":"Syed M. Hasnain , Abid Iqbal , Irfan Qasim , Kamran Irshad , M. Amin Mir , Muhammad Imran Malik , L. Syam Sundar","doi":"10.1016/j.hybadv.2025.100408","DOIUrl":"10.1016/j.hybadv.2025.100408","url":null,"abstract":"<div><div>Perovskite solar cells have made substantial progress in efficiency and technology for the future photovoltaic systems. Study investigates effect of absorber layer composition on effectiveness power conversion efficiency of solar cell configured with ITO/ZnO/MASnI<sub>3</sub>/CuSCN/Au and ITO/ZnO/BaZrS<sub>3</sub>/CuSCN/Au material. Using SCAPS-1D simulation tool, the optimized structural layer thicknesses, maximize device efficiency was analyzed. The MASnI<sub>3</sub>-based perovskite solar cells consistently outperformed their BaZrS<sub>3</sub> counterparts, with optimized thicknesses of 0.03 μm for the ZnO layer and 0.8 μm for the MASnI<sub>3</sub> absorber layer, yielding a PCE of 20.17 %, an open-circuit voltage (V<sub>oc</sub>) of 0.8378 V, a short-circuit current density (J<sub>sc</sub>) of 34.18 mA/cm<sup>2</sup> and a fill factor (FF) of 70.45 %. Conversely, the BaZrS<sub>3</sub>-based cells, with optimal thicknesses of 0.04 μm for the ZnO layer and 0.50 μm for the BaZrS<sub>3</sub> absorber layer, achieved a PCE of 8.28 %, a V<sub>oc</sub> of 1.3758 V, a J<sub>sc</sub> of 13.92 mA/cm<sup>2</sup>, and an FF of 43.24 %.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100408"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-13DOI: 10.1016/j.hybadv.2025.100410
Joy Hoskeri H , Arun Shettar K , Bheemanagouda N. Patil , Rajendra B. Pujar , Pramod Bhasme
Melatonin and magnesium nanoparticles exhibit diverse pharmacological properties. Trimethyltin and trimethyltin derived compounds both are toxic to neurons. The proposed research work is focus on synthesis on novel magnesium oxide nanoparticles conjugated with melatonin and evaluate its neuroprotective efficacy against trimethyltin induced neurotoxicity. Sol-gel method was used to fabricate Melatonin-MgO nanoparticles. Synthesized Melatonin-MgO particle were spectrally characterized. UV spectral analysis showed lambda max of Melatonin-MgO at 342 nm. Particle size analysis indicated that M − MgO nanoparticles have Z-average of 160.6 nm. Zeta potential estimation revealed that M − MgO exhibited Zeta potential of −0.1 mV. XRD analysis of M − MgO nanoparticles indicated that it has amorphous nature. SEM images revealed the agglomerated state of the particles. The cytotoxicity studies revealed that the IC50 value of M − MgO against L929 mouse fibroblast cell line for 24 h treatment was found to be 77.02 μg/ml. The results of this investigation indicate that the Neuroprotective studies revealed that melatonin conjugated magnesium oxide was exhibited maximum neuroprotection rendering cell viability of 88.59 % at 30 μg/ml against trimethyltin induced neurointoxication in SK-N-SH cells. By utilizing the distinct neuroprotective properties of both substances, melatonin-functionalized magnesium oxide nanoparticles may provide a more efficient and focused method of treating oxidative stress and neuronal dysfunction in a range of neurological conditions.
{"title":"Neuroprotective studies of Melatonin functionalized magnesium oxide nanoparticles","authors":"Joy Hoskeri H , Arun Shettar K , Bheemanagouda N. Patil , Rajendra B. Pujar , Pramod Bhasme","doi":"10.1016/j.hybadv.2025.100410","DOIUrl":"10.1016/j.hybadv.2025.100410","url":null,"abstract":"<div><div>Melatonin and magnesium nanoparticles exhibit diverse pharmacological properties. Trimethyltin and trimethyltin derived compounds both are toxic to neurons. The proposed research work is focus on synthesis on novel magnesium oxide nanoparticles conjugated with melatonin and evaluate its neuroprotective efficacy against trimethyltin induced neurotoxicity. Sol-gel method was used to fabricate Melatonin-MgO nanoparticles. Synthesized Melatonin-MgO particle were spectrally characterized. UV spectral analysis showed lambda max of Melatonin-MgO at 342 nm. Particle size analysis indicated that M − MgO nanoparticles have Z-average of 160.6 nm. Zeta potential estimation revealed that M − MgO exhibited Zeta potential of −0.1 mV. XRD analysis of M − MgO nanoparticles indicated that it has amorphous nature. SEM images revealed the agglomerated state of the particles. The cytotoxicity studies revealed that the IC<sub>50</sub> value of M − MgO against L929 mouse fibroblast cell line for 24 h treatment was found to be 77.02 μg/ml. The results of this investigation indicate that the Neuroprotective studies revealed that melatonin conjugated magnesium oxide was exhibited maximum neuroprotection rendering cell viability of 88.59 % at 30 μg/ml against trimethyltin induced neurointoxication in SK-N-SH cells. By utilizing the distinct neuroprotective properties of both substances, melatonin-functionalized magnesium oxide nanoparticles may provide a more efficient and focused method of treating oxidative stress and neuronal dysfunction in a range of neurological conditions.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100410"},"PeriodicalIF":0.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-11DOI: 10.1016/j.hybadv.2025.100405
K. Ishola
Identifying suitable lateritic soil (LS) for road pavement construction in high clay content regions is challenging and requires improvement for effective use. This study assessed the eco-friendly use of cashew leaf ash (CLA) to enhance LS for sustainable road construction. CLA was added in concentrations of 0 %, 2 %, 4 %, 6 %, 8 %, and 10 % by weight of the dry soil. Various tests, including Atterberg limits (liquid limit, plastic limit, plasticity index and linear shrinkage), compaction characteristics, California Bearing Ratio (CBR), and unconfined compressive strength (UCS), were conducted on both untreated and CLA-stabilized soil. Results showed that increasing CLA content reduced the Atterberg limits up to 4 % CLA content. The optimal compaction characteristics were observed at 6 % CLA content. At this concentration, the CBR values significantly improved, though they remained below the 80 % and 180 % thresholds required for base materials and cement-stabilized materials, respectively. UCS values also improved with 6 % CLA at various curing periods but did not satisfy the 1710 kN/m2 condition for acceptable soil stabilization and modification with OPC. However, the UCS values at 28 days were within the range suitable for sub-base use. Regression analysis indicated robust connections amid experimented and predicted strength indices. It is recommended to use lateritic soil treated with 6 % CLA and compacted at 28 days curing age for sub-base in flexible pavement construction. CLA can also be used as an additive in cement stabilization for low traffic road surfaces.
{"title":"Evaluation of the eco-friendly contribution of cashew leaf ash in sustainable lateritic soil road pavement construction","authors":"K. Ishola","doi":"10.1016/j.hybadv.2025.100405","DOIUrl":"10.1016/j.hybadv.2025.100405","url":null,"abstract":"<div><div>Identifying suitable lateritic soil (LS) for road pavement construction in high clay content regions is challenging and requires improvement for effective use. This study assessed the eco-friendly use of cashew leaf ash (CLA) to enhance LS for sustainable road construction. CLA was added in concentrations of 0 %, 2 %, 4 %, 6 %, 8 %, and 10 % by weight of the dry soil. Various tests, including Atterberg limits (liquid limit, plastic limit, plasticity index and linear shrinkage), compaction characteristics, California Bearing Ratio (CBR), and unconfined compressive strength (UCS), were conducted on both untreated and CLA-stabilized soil. Results showed that increasing CLA content reduced the Atterberg limits up to 4 % CLA content. The optimal compaction characteristics were observed at 6 % CLA content. At this concentration, the CBR values significantly improved, though they remained below the 80 % and 180 % thresholds required for base materials and cement-stabilized materials, respectively. UCS values also improved with 6 % CLA at various curing periods but did not satisfy the 1710 kN/m<sup>2</sup> condition for acceptable soil stabilization and modification with OPC. However, the UCS values at 28 days were within the range suitable for sub-base use. Regression analysis indicated robust connections amid experimented and predicted strength indices. It is recommended to use lateritic soil treated with 6 % CLA and compacted at 28 days curing age for sub-base in flexible pavement construction. CLA can also be used as an additive in cement stabilization for low traffic road surfaces.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100405"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-11DOI: 10.1016/j.hybadv.2025.100409
Xiaoyi Meng , Haixiong Shi , Zhibin Lu
The adsorption properties of carbon monoxide (CO) on noble metal single atoms (Ir, Ru, Pt, Pd, Rh) supported by magnesium oxide (MgO) surfaces with varying morphologies were investigated using density functional theory (DFT) calculations. This work examines CO adsorption on both flat and stepped MgO surfaces unveils the significant impact of support morphology on adsorption characteristics. The study delves into the enhanced adsorption energies and the altered interaction dynamics observed on stepped surfaces as opposed to flat ones, highlighting the influence of surface topology. Insights gained from the Integrated Crystal Orbital Hamilton Population (ICOHP), orbital interactions, and energy decomposition methods underscore the fundamental nature of adsorption actions, showing how surface structure affects adsorption efficiency. These findings not only enrich the understanding of metal-atom-mediated CO adsorption mechanisms but also suggest the potential to design more effective catalytic systems by exploiting surface morphology for environmental and energy applications.
{"title":"Theoretical insights into adsorption of CO with noble metal single atoms on flat and stepped MgO surfaces","authors":"Xiaoyi Meng , Haixiong Shi , Zhibin Lu","doi":"10.1016/j.hybadv.2025.100409","DOIUrl":"10.1016/j.hybadv.2025.100409","url":null,"abstract":"<div><div>The adsorption properties of carbon monoxide (CO) on noble metal single atoms (Ir, Ru, Pt, Pd, Rh) supported by magnesium oxide (MgO) surfaces with varying morphologies were investigated using density functional theory (DFT) calculations. This work examines CO adsorption on both flat and stepped MgO surfaces unveils the significant impact of support morphology on adsorption characteristics. The study delves into the enhanced adsorption energies and the altered interaction dynamics observed on stepped surfaces as opposed to flat ones, highlighting the influence of surface topology. Insights gained from the Integrated Crystal Orbital Hamilton Population (ICOHP), orbital interactions, and energy decomposition methods underscore the fundamental nature of adsorption actions, showing how surface structure affects adsorption efficiency. These findings not only enrich the understanding of metal-atom-mediated CO adsorption mechanisms but also suggest the potential to design more effective catalytic systems by exploiting surface morphology for environmental and energy applications.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100409"},"PeriodicalIF":0.0,"publicationDate":"2025-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-10DOI: 10.1016/j.hybadv.2025.100407
Igwilo Christopher Nnaemeka , Chime T. O , Ude Callistus Nonso , Onoh Maxwell Ikechukwu , Agu Francis Anezichukwu , Nnanwube A. Ikechukwu , Omotioma M , Enekwe Benedith Chukwudi , Menechukwu Kosoluchi Chisom , Ossai Tina Ifeanyichukwu , Onyekwulu Scholastica Chinelo
The retrieval of metals from ores as well as waste materials has become a critical concern in the modern era, driven by increasing demand and depleting natural resources. Bio-hydrometallurgical leaching, a microbiological method, has emerged as a promising alternative to traditional chemical extraction techniques. This review aims to examine the efficiency of microbe-assisted metal extraction through bio-hydrometallurgical leaching, focusing on the latest advancements and applications in this field. Recent studies have demonstrated the potential of microorganisms to solubilize metals through the creation of organic acids, chelating substances, as well as redox reactions. Bio-hydrometallurgical leaching offers several advantages, including reduced environmental impact, lower operating costs, and enhanced metal recoveries. The review highlights the role of various microorganisms, including bacteria, archaea, and fungi, in metal extraction, as well as the factors influencing their activity, such as pH, temperature, and nutrient availability.
{"title":"Examining the efficiency of microbe-assisted metal extraction: A review of bio-hydrometallurgical leaching techniques","authors":"Igwilo Christopher Nnaemeka , Chime T. O , Ude Callistus Nonso , Onoh Maxwell Ikechukwu , Agu Francis Anezichukwu , Nnanwube A. Ikechukwu , Omotioma M , Enekwe Benedith Chukwudi , Menechukwu Kosoluchi Chisom , Ossai Tina Ifeanyichukwu , Onyekwulu Scholastica Chinelo","doi":"10.1016/j.hybadv.2025.100407","DOIUrl":"10.1016/j.hybadv.2025.100407","url":null,"abstract":"<div><div>The retrieval of metals from ores as well as waste materials has become a critical concern in the modern era, driven by increasing demand and depleting natural resources. Bio-hydrometallurgical leaching, a microbiological method, has emerged as a promising alternative to traditional chemical extraction techniques. This review aims to examine the efficiency of microbe-assisted metal extraction through bio-hydrometallurgical leaching, focusing on the latest advancements and applications in this field. Recent studies have demonstrated the potential of microorganisms to solubilize metals through the creation of organic acids, chelating substances, as well as redox reactions. Bio-hydrometallurgical leaching offers several advantages, including reduced environmental impact, lower operating costs, and enhanced metal recoveries. The review highlights the role of various microorganisms, including bacteria, archaea, and fungi, in metal extraction, as well as the factors influencing their activity, such as pH, temperature, and nutrient availability.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100407"},"PeriodicalIF":0.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Metal-organic frameworks (MOFs) are promising materials with high surface areas, tuneable pore sizes, and unique porous structures, which make them ideal candidates for a wide range of biomedical applications, including catalysis, bioimaging, and drug delivery. Recent advancements in the functionalization of MOFs, achieved through pre- and post-synthetic modifications, have expanded their applicability, particularly through the integration of nanoparticles (NPs). These nano-hybrid MOFs, incorporating nanoparticles such as gold, silver, platinum, copper, and iron, exhibit enhanced properties that boost their effectiveness in therapeutic, diagnostic, and environmental applications. Various synthesis techniques, including “ship-in-bottle” and “one-pot” methods, enable the creation of nano-hybrid composites with optimized catalytic performance, biosensing abilities, and drug delivery capabilities. This review uniquely focuses on the underexplored interplay between NP-MOF hybridization strategies and their direct influence on catalytic mechanisms in biomedical and environmental contexts. The integration of metal and carbon-based nanomaterials, including gold, silver, graphene oxide, and carbon nanotubes, into MOFs, emphasizing their impact on structural integrity, stability, and functional enhancements. Notably, these nano-hybrid MOFs demonstrate significant potential in drug delivery systems, offering controlled release mechanisms responsive to pH, redox, and temperature stimuli. The review also highlights the use of nano-hybrid MOFs in advanced cancer therapies, antimicrobial treatments, wound healing, and neurodegenerative disease research. Despite these innovations, challenges such as scalability, toxicity, and precise control over nanoparticle behaviour remain critical barriers. We critically assess recent advancements in MOF-based catalysis for biomedical applications, identifying key knowledge gaps and proposing future directions for overcoming synthetic limitations and biocompatibility concerns. Future developments in nano-hybrid MOF-based systems are crucial to optimizing their clinical applications and overcoming existing limitations in biocompatibility, biodegradability, and long-term stability.
{"title":"Smart nano-hybrid metal-organic frameworks: Revolutionizing advancements, applications, and challenges in biomedical therapeutics and diagnostics","authors":"Dilip Kumar Chandra , Awanish Kumar, Chinmaya Mahapatra","doi":"10.1016/j.hybadv.2025.100406","DOIUrl":"10.1016/j.hybadv.2025.100406","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) are promising materials with high surface areas, tuneable pore sizes, and unique porous structures, which make them ideal candidates for a wide range of biomedical applications, including catalysis, bioimaging, and drug delivery. Recent advancements in the functionalization of MOFs, achieved through pre- and post-synthetic modifications, have expanded their applicability, particularly through the integration of nanoparticles (NPs). These nano-hybrid MOFs, incorporating nanoparticles such as gold, silver, platinum, copper, and iron, exhibit enhanced properties that boost their effectiveness in therapeutic, diagnostic, and environmental applications. Various synthesis techniques, including “ship-in-bottle” and “one-pot” methods, enable the creation of nano-hybrid composites with optimized catalytic performance, biosensing abilities, and drug delivery capabilities. This review uniquely focuses on the underexplored interplay between NP-MOF hybridization strategies and their direct influence on catalytic mechanisms in biomedical and environmental contexts. The integration of metal and carbon-based nanomaterials, including gold, silver, graphene oxide, and carbon nanotubes, into MOFs, emphasizing their impact on structural integrity, stability, and functional enhancements. Notably, these nano-hybrid MOFs demonstrate significant potential in drug delivery systems, offering controlled release mechanisms responsive to pH, redox, and temperature stimuli. The review also highlights the use of nano-hybrid MOFs in advanced cancer therapies, antimicrobial treatments, wound healing, and neurodegenerative disease research. Despite these innovations, challenges such as scalability, toxicity, and precise control over nanoparticle behaviour remain critical barriers. We critically assess recent advancements in MOF-based catalysis for biomedical applications, identifying key knowledge gaps and proposing future directions for overcoming synthetic limitations and biocompatibility concerns. Future developments in nano-hybrid MOF-based systems are crucial to optimizing their clinical applications and overcoming existing limitations in biocompatibility, biodegradability, and long-term stability.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100406"},"PeriodicalIF":0.0,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-02-05DOI: 10.1016/j.hybadv.2025.100401
Roland Urselin Noumsi Foko , Cyrille Ghislain Fotsop , Donald Raoul Tchuifon Tchuifon , Charles Banenzoué , Anatole Guy Blaise Azebaze
This work describes the hydrothermal synthesis and characterization of zeolite 4A (Zeo-4A) and magnetite zeolite (Zeo-4A@Fe3O4) from Cameroonian raw kaolin. The study also explores the efficiency of Zeo-4A@Fe3O4 for the removal of quinoline yellow (E104) via Fenton process. XRD, FTIR, SEM, EDX, NMR-MAS and TGA-DSC characterizations show that Zeo-4A is crystalline with cubic morphology, while Zeo-4A@Fe3O4 exhibits a bonding interaction between zeolite and Fe3O4 nanoparticle leading to morphological structural changes. The degradation of quinoline yellow by heterogeneous Fenton process was carried out by varying several parameters, namely solution pH (3–7), H2O2 concentration (0.5–1.5 mol/L), quinoline yellow concentration (50–100 mg/L), and catalyst mass (50–100 mg). The results of catalytic performance tests reveal that the degradation efficiency of synthetic Zeo-4A, Zeo-4A@Fe3O4 and Fe3O4 were 1.71 %, 93.60 % and 92.65 %, respectively, after 60 min. Confirmatory tests were carried out by response surface methodology based on the Box-Behnken design, and a degradation rate of 98.81 % was obtained under optimum conditions of pH 3.84, 50.14 mg/L, 100 mg, and 1.5 g/L; which is well in line with the model predictions. A significant quadratic regression model R2 = 91.35 % and the adjusted coefficient of determination value (adjusted R2 = 82.04 %) were observed using the analysis of the variance. The study of catalyst recovery and reusability shows that the catalysts remain stable with a degradation rate greater than 66 % after five cycles. The kinetics results show that the degradation of E104 follows first and second order kinetic models, influenced by pH and catalyst mass, with optimum efficiency at pH 3. The characterization results of the material after degradation show that it maintains its structural integrity after use.
{"title":"Green synthesis of magnetic type Zeolites 4A as catalyst for the elimination of quinoline yellow by the Fenton process: Optimization and kinetic investigation","authors":"Roland Urselin Noumsi Foko , Cyrille Ghislain Fotsop , Donald Raoul Tchuifon Tchuifon , Charles Banenzoué , Anatole Guy Blaise Azebaze","doi":"10.1016/j.hybadv.2025.100401","DOIUrl":"10.1016/j.hybadv.2025.100401","url":null,"abstract":"<div><div>This work describes the hydrothermal synthesis and characterization of zeolite 4A (Zeo-4A) and magnetite zeolite (Zeo-4A@Fe<sub>3</sub>O<sub>4</sub>) from Cameroonian raw kaolin. The study also explores the efficiency of Zeo-4A@Fe<sub>3</sub>O<sub>4</sub> for the removal of quinoline yellow (E104) via Fenton process. XRD, FTIR, SEM, EDX, NMR-MAS and TGA-DSC characterizations show that Zeo-4A is crystalline with cubic morphology, while Zeo-4A@Fe<sub>3</sub>O<sub>4</sub> exhibits a bonding interaction between zeolite and Fe<sub>3</sub>O<sub>4</sub> nanoparticle leading to morphological structural changes. The degradation of quinoline yellow by heterogeneous Fenton process was carried out by varying several parameters, namely solution pH (3–7), H<sub>2</sub>O<sub>2</sub> concentration (0.5–1.5 mol/L), quinoline yellow concentration (50–100 mg/L), and catalyst mass (50–100 mg). The results of catalytic performance tests reveal that the degradation efficiency of synthetic Zeo-4A, Zeo-4A@Fe<sub>3</sub>O<sub>4</sub> and Fe<sub>3</sub>O<sub>4</sub> were 1.71 %, 93.60 % and 92.65 %, respectively, after 60 min. Confirmatory tests were carried out by response surface methodology based on the Box-Behnken design, and a degradation rate of 98.81 % was obtained under optimum conditions of pH 3.84, 50.14 mg/L, 100 mg, and 1.5 g/L; which is well in line with the model predictions. A significant quadratic regression model R<sup>2</sup> = 91.35 % and the adjusted coefficient of determination value (adjusted R<sup>2</sup> = 82.04 %) were observed using the analysis of the variance. The study of catalyst recovery and reusability shows that the catalysts remain stable with a degradation rate greater than 66 % after five cycles. The kinetics results show that the degradation of E104 follows first and second order kinetic models, influenced by pH and catalyst mass, with optimum efficiency at pH 3. The characterization results of the material after degradation show that it maintains its structural integrity after use.</div></div>","PeriodicalId":100614,"journal":{"name":"Hybrid Advances","volume":"9 ","pages":"Article 100401"},"PeriodicalIF":0.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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