Topics in Catalysis最新文献

{"title":"Synergistic UV-Driven Photocatalytic Degradation of Pharmaceutical Pollutants over ZnS-Chitosan-Cu Hybrid Nanocomposite","authors":"Ganji Sandhya,&nbsp;Domala Suresh,&nbsp;Arshanapelly Mahender Rao,&nbsp;Rajendran Sribalan,&nbsp;K. Ramesh","doi":"10.1007/s11244-026-02272-7","DOIUrl":"10.1007/s11244-026-02272-7","url":null,"abstract":"<div><p>Zinc sulphide nanoparticles were hydrothermally synthesized and integrated into a chitosan N-acetyl cysteine copper complex (CNCC) to develop a novel hybrid photocatalyst. The ZnS-CNCC nanocomposite was characterized using XRD, UV–Vis, FTIR, SEM–EDX, TEM/HRTEM, and PL analyses, confirming the crystalline ZnS structure, nanoscale morphology, and strong interfacial interaction with the CNCC matrix. Optical studies revealed a bandgap of 3.88 eV, while PL results indicated supressed charge carrier recombination in the hybrid system. The photocatalytic performance of the ZnS-CNCC nanocomposite was evaluated for the degradation of pharmaceutical pollutants (aspirin, paracetamol, and tetracycline) under UV (254 &amp; 365 nm), visible, and solar irradiation across different pH conditions. The hybrid photocatalyst exhibited significantly enhanced degradation efficiency, with maximum activity under UV irradiation, demonstrating the effectiveness of the polymer-metal-semiconductor hybrid design in improving photocatalytic performance.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2175 - 2191"},"PeriodicalIF":3.7,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and Characterization of a Green Hydrogen Driven Sustainable Electricity Generation System","authors":"J. V. C. Vargas,&nbsp;H. P. Guerra,&nbsp;A. M. Silveira,&nbsp;D. M. Taher,&nbsp;C. H. Matiolo,&nbsp;L. S. Martins,&nbsp;S. H. Och,&nbsp;D. B. Pitz,&nbsp;A. B. Mariano,&nbsp;L. Cardozo-Filho,&nbsp;G. S. Venter,&nbsp;J. C. Ordonez","doi":"10.1007/s11244-026-02276-3","DOIUrl":"10.1007/s11244-026-02276-3","url":null,"abstract":"<div><p>This work introduces a sustainable electricity generation system driven by green hydrogen, produced from aluminum and water. The system consists of a hydrogen batch reactor, a buffer tank, a booster, a compressor, a storage tank and a proton exchange membrane fuel cell (PEMFC) stack, mounted on a car trailer for compacity and mobility. The Alkaline Aqueous Redox Reaction of Aluminum (AARRA) allows for the production of H₂ to supply the PEMFC stack. Since residual aluminum from a well-established recycling chain, seawater or degraded water could be utilized, the system is expected to be fully sustainable. A prototype was built in the laboratory and system characterization was carried out considering the hydrogen production, storage, and power generation with the PEMFC stack that uses the green hydrogen generated in the reactor as fuel. The prototype main components were built with AISI 316 stainless-steel to prevent the corrosion promoted by the alkaline solution and hydrogen embrittlement, guaranteeing the system durability. The results show that the system was capable of generating up to 20.5 g of hydrogen in each batch, corresponding to a hydrogen yield of 81% when compared to the stoichiometric value. Experimental power and polarization curves characterizing the operation of a 5-kW Horizon PEMFC stack were obtained, which showed good qualitative and quantitative agreement with the nominal curves provided by the fuel cell manufacturer. The produced H₂ had the necessary purity to supply the PEMFC stack up to 90% of its maximum nominal power with no need of extra energy consumption for H₂ purification, which is an advantage in comparison to other green H₂ production methods, such as electrolysis that requires extra-energy consumption for H₂ dehumidification. A prototype of an electric vehicle (EV) range extender (REX) was built with the proposed system and tested, showing that the EV nominal range was increased by 16%, accounting for 61.5 km of vehicle autonomy. Hence, possible future direct applications include electric vehicles, all electric ships and stationery distributed power generation.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 13-14","pages":"1851 - 1869"},"PeriodicalIF":3.7,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile Fabrication of RuS2/g-C3N4 Heterostructure for Photocatalytic Hydrogen Evolution and Degradation of Malathion Insecticide","authors":"Riyadh H. Alshammari","doi":"10.1007/s11244-026-02265-6","DOIUrl":"10.1007/s11244-026-02265-6","url":null,"abstract":"<div><p>Highly efficient visible-light-driven RuS₂/g-C₃N₄ heterostructured photocatalysts were fabricated through a simple hydrothermal method. The composition, structure, morphology, and optical properties of the as-prepared RuS₂, g-C₃N₄, and RuS₂/g-C₃N₄ composites were characterized by XRD, FTIR, XPS, TEM, and UV-Vis DRS. Interestingly, the photocatalytic activity and charge carrier separation efficiency of RuS₂/g-C₃N₄ were strongly influenced by the heterostructure formation. Among the prepared materials, RuS₂/g-C₃N₄ exhibited the highest hydrogen evolution rate (1942 µmol g⁻¹), which is ~ 2.9 and 1.6 times higher than pristine g-C₃N₄ (678 µmol g⁻¹) and RuS₂ (1234 µmol g⁻¹), respectively. The enhanced performance could be attributed to the synergetic interaction between RuS₂ and g-C₃N₄, efficient charge transfer at Z-scheme heterojunction, and suppression of electron–hole recombination. Furthermore, RuS₂/g-C₃N₄ demonstrated excellent photocatalytic degradation of malathion (98%), and the degradation pathway was proposed based on LC-MS analysis. Theoretical toxicity predictions confirmed that the some of the intermediates are non-hazardous. The composite also showed remarkable stability under repeated cycles, highlighting its potential for practical energy and environmental applications.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2102 - 2116"},"PeriodicalIF":3.7,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Thermal Treatment on Bandgap and Morphological Properties of α-Fe2O3 Nanoparticles for Photocatalysis","authors":"C. Dominic Savio,&nbsp;S. Rahul,&nbsp;P. Saravanan,&nbsp;D. Daniel Lawrence,&nbsp;Subhav Singh,&nbsp;Sivarasan Ganesan,&nbsp;A. Dhayal Raj,&nbsp;T. Pazhanivel,&nbsp;E. Ragulkumar","doi":"10.1007/s11244-025-02263-0","DOIUrl":"10.1007/s11244-025-02263-0","url":null,"abstract":"<div><p>In this study, α-Fe₂O₃ nanoparticles were successfully synthesized via a chemical precipitation method, followed by calcination at different temperatures (400, 600, and 800 °C) to investigate the influence of thermal treatment on their structural, optical, morphological, and photocatalytic properties. X-ray diffraction (XRD) confirmed the formation of phase-pure rhombohedral α-Fe₂O₃ and revealed that the crystallite size increased from 29 to 54 nm with higher calcination temperatures, indicating improved crystallinity. Optical studies showed a systematic reduction in band gap energy from 2.78 to 2.64 eV, while FTIR spectra verified the presence of Fe–O vibrational modes and the progressive removal of surface hydroxyl and organic groups upon calcination. Scanning electron microscopy (SEM) demonstrated uniform rod-like morphologies, with particle dimensions enlarging at elevated temperatures due to Ostwald ripening. The photocatalytic performance was evaluated using methylene blue (MB) as a model pollutant under visible light. Notably, photocatalytic efficiency increased with calcination temperature, reaching ~ 92% degradation for the 800 °C sample, which is attributed to enhanced crystallinity, optimized surface functionality, and improved charge separation. Overall, these findings demonstrate that thermally tuned α-Fe₂O₃ nanorods possess excellent potential as cost-effective and efficient photocatalysts for wastewater treatment applications. The photocatalyst showed outstanding reusability, maintaining a high degrading efficiency across three successive cycles. This stability suggests that it may have long-term practical uses.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2137 - 2147"},"PeriodicalIF":3.7,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PtCo Nanoparticles on Heat-Treated Carbon Blacks for Durable PEMFC Catalyst","authors":"Ayşenur Öztürk Aydın,&nbsp;Ayşe Bayrakçeken","doi":"10.1007/s11244-026-02274-5","DOIUrl":"10.1007/s11244-026-02274-5","url":null,"abstract":"<div><p>The development of high-performance, durable catalysts for polymer electrolyte membrane fuel cells (PEMFCs) is crucial to the widespread adoption of hydrogen technologies. In this context, three commercial carbon blacks (Regal 330, Vulcan XC 72R, Black Pearl 2000), each with varying surface areas and physical properties, were heat-treated at specific temperatures (1400, 1000, 1200 °C) and then used as support materials for PtCo nanoparticles (NPs). The prepared catalysts were characterized by ICP-MS, TEM, XRD, XPS (Pt 4f, Co 2p), zeta potential, contact angle, and topography analysis. The electrochemical activities of the catalysts were evaluated using CV and LSV in a three-electrode system. PEMFC performance was tested in a single-cell station, and catalyst resistance was determined by EIS. The electrochemical surface areas (ECSAs) of the catalysts are 10.5, 16.3, and 27.5 m² g^− 1 for PtCo/R-14, PtCo/V-10, and PtCo/BP-12, in parallel with the increase in the surface areas of carbon blacks. In the LSV analysis, PtCo/V-10 achieved the best current density plateau and the highest limiting current density (-2.298 mA cm^− 2, @1600 rpm). In the performance evaluations of PEMFCs conducted at varied retention potentials (0.6 V/0.1 V), the catalysts PtCo/R-14, PtCo/V-10, and PtCo/BP-12 yielded the following current density values: 257.6/322.4, 281.6/384.4, and 95.5/156.9 mA cm^− 2 (@0.6 V), respectively. Notably, the PtCo/V-10 catalyst exhibited the highest performance among the tested catalysts. Following 1000 aging cycles, the PtCo/V-10 and the commercial Tanaka catalyst experienced current density loss of 7.26% and 58.35%, respectively. Overall, the PtCo/V-10 catalyst demonstrated the best balance of performance and durability.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 19","pages":"2787 - 2807"},"PeriodicalIF":3.7,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-026-02274-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance and Mechanism of Biosynthesised ZnO Nanoparticles-Based Gum Arabic in Electrocatalysis and Photoelectrocatalysis Degradation of Indigo Carmine Dye","authors":"Samah Anwar,&nbsp;Mohamed Zayed,&nbsp;Mai Hussien","doi":"10.1007/s11244-025-02253-2","DOIUrl":"10.1007/s11244-025-02253-2","url":null,"abstract":"<div><p>The development of inexpensive alternatives and high-performance electrocatalysts is essential to advancing green energy. This paper discusses the two main applications of green energy in electrochemical reactions for pollutant degradation. Developing efficient electrocatalysts requires an understanding of the mechanisms underlying electrocatalysis and photoelectrocatalysis, as well as the ability to predict their performance. Catalysis is one of the most significant applications of zinc oxide, which is widely utilised in various industries. ZnO nanoparticles (ZnO-NPs) are effective for decomposing dangerous organic compounds and maintaining thermal stability. At the same time, it’s environmentally friendly. The scientific community has considered ZnO-NPs as a “future material”. Moreover, proposed mechanisms for the degradation of Indigo carmine dye (IC) include electrocatalysis and photoelectrocatalysis. Changes in structure under an electric field and the effects of the photo-electrolyte on the degradation process are also discussed. 0.001 Acacia gum/ZnO-NPs showed optimum electrocatalytic and photoelectrocatalytic efficiency up to 98% and 99.5% within 16 and 12 minutes, with rate constants of about 0.178 and 0.358 min^− 1, respectively.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 17-18","pages":"2488 - 2503"},"PeriodicalIF":3.7,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-025-02253-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Highly Dispersed and Stable Cu–Fe Nanocatalysts for Ethyl Levulinate Hydrogenation","authors":"Weiguo Fang,&nbsp;Qi Zhang,&nbsp;Liping Luo,&nbsp;Junying Tian,&nbsp;Yaohua Sun,&nbsp;Hailong Liu,&nbsp;Guixian Li","doi":"10.1007/s11244-026-02267-4","DOIUrl":"10.1007/s11244-026-02267-4","url":null,"abstract":"<div><p>Cu-based nanocatalysts have potential applications in the selective hydrogenation of biomass-derived platform molecules. Currently, a main challenge is the poor stability of Cu catalysts under harsh reaction conditions due to metallic Cu sintering and agglomeration. Herein, a series of Cu_xFe_y/Al₂O₃ nanocomposite catalysts was prepared via controlled solution combustion synthesis (SCS) owing to its minimal reaction time and energy requirements that reduce Cu agglomeration. Among them, the Cu₅Fe₃/Al₂O₃ catalyst exhibited the most favorable structure with the smallest grain size of 2.09 nm, highest dispersion of 63.6%, and an optimal Cu⁺/Cu⁰ ratio of 1.0 than the traditional Cu/Al₂O₃ counterpart. The synergy between Fe₂O₃ and Cu inhibited the thorough reduction of Cu²⁺ to Cu⁰ and consequently facilitated H₂ dissociation and activation as well as the highly efficient activation of the ethyl levulinate’s (EL) carbonyl group. Unlike the traditional Cu/Al₂O₃ catalyst, for which activity rapidly decreased from 97% to 11% over 200 h, the Cu₅Fe₃/Al₂O₃ catalyst exhibited a high GVL yield of 85% and maintained excellent stability, attributable to the strong interaction between Cu nanoparticles and Al₂O₃ support as well as the confinement effect with barrier property of Fe doping. Therefore, the inexpensive, efficient, and stable Cu₅Fe₃/Al₂O₃ catalyst has potential applications in the selective hydrogenation of biomass-derived platform compounds.</p><p>Solution combustion synthesis was employed to prepare a Cu–Fe/Al₂O₃ nanocomposite catalyst, which exhibited excellent catalytic performance in the hydrogenation of biomass-derived ethyl levulinate to γ-valerolactone (GVL). This catalyst surpassed the performance of the traditional Cu/Al₂O₃ catalyst, particularly in terms of demonstrating a high GVL yield of 85% and maintaining stability for over 200 h. This excellent performance could be attributed to its high Cu dispersion, small grain size, and optimal Cu⁺/Cu⁰ ratio.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 4-7","pages":"1089 - 1101"},"PeriodicalIF":3.0,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Z-Scheme-Inspired Lanthanide-Infused WO3/g-C3N4 Photocatalyst for Rapid Sunlight Degradation of Fluoroquinolone Antibiotics","authors":"S. Rubesh Ashok Kumar,&nbsp;Mooni Siva Prasad,&nbsp;D. Vasvini Mary,&nbsp;P. Saravanan,&nbsp;A. S. Vigneshraaj,&nbsp;G. A. Suganya Josephine,&nbsp;Mohammed Alsawat,&nbsp;Krishna Prakash Arunachalam,&nbsp;Mir Waqas Alam","doi":"10.1007/s11244-026-02270-9","DOIUrl":"10.1007/s11244-026-02270-9","url":null,"abstract":"<div><p>In the advanced oxidation process, photocatalytic degradation stands out as one of the most eco-friendly methods for treating wastewater. Recently, transition metal oxides and rare earth metal oxides supported heterogeneous nanomaterials have emerged as promising photocatalysts for the next generation. This study focuses on the efficient photocatalytic degradation of the moxifloxacin (MX) antibiotic using a lanthanide-infused WO₃-based gC₃N₄ nanomaterial (LWCN). The synthesized photocatalyst exhibited enhanced light absorption and high chemical stability, leading to a significant reduction in moxifloxacin in wastewater. The photocatalytic performance of the LWCN was examined by assessing the degradation of MX under different light exposure conditions. Experiments were conducted across varying initial concentrations of MX, revealing that degradation efficiency decreased with increasing antibiotic concentration. The obtained results show that the degradation percentage of the MX antibiotic (5 ppm) was exceptionally high, reaching 99.87% under sunlight (180 min) and 99.8% under visible light (240 min). Kinetic studies confirmed pseudo-first-order kinetics with rate constants (5 ppm − 8.27 × 10^− 2 min^− 1), indicating that degradation rates decreased as antibiotic concentration increased. The LWCN nanomaterial demonstrates significant potential for effectively eliminating MX from aqueous environments, highlighting its applicability in wastewater treatment under natural sunlight and visible light conditions.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2232 - 2244"},"PeriodicalIF":3.7,"publicationDate":"2026-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Holmium Doped ZnCo2O4@CNTs: Dual Function Nanostructures for Photocatalytic Degradation of Mixture of Dyes and Antibacterial Performance","authors":"Kawthar Saad Alghamdi","doi":"10.1007/s11244-026-02269-2","DOIUrl":"10.1007/s11244-026-02269-2","url":null,"abstract":"<div><p>This work successfully presents a solvent-free approach to synthesize zinc cobaltite (ZnCo₂O₄), and holmium-doped zinc cobaltite (Ho–ZnCo₂O₄), and further uses them to prepare nanostructures with carbon nanotubes via ultrasonication (Ho–ZnCo₂O₄/CNTs). As water pollution and energy constraints have become global concerns, there is a continuous need to develop more effective catalytic materials. The XRD patterns confirmed the fabrication and presented a slight backward shifting with greater crystallite size. FTIR profile affirmed the functional groups found in ZnCo₂O₄ and Ho–ZnCo₂O₄. Moreover, the optical spectra showed a bathochromic shift and a reduced bandgap energy (Eg) on the introduction of Ho in the pristine ZnCo₂O₄. The electrochemical impedance spectroscopy (EIS) results showed lower resistances in the case of Ho–ZnCo₂O₄ compared to ZnCo₂O₄, confirming better performance. The materials were further utilized to investigate the photocatalytic efficiency by preparing the mixture of various dyes under Xenon radiations. After 70 min, the Ho–ZnCo₂O₄/CNTs presented 87.69% degradation which was maximum than other catalysts. Furthermore, the materials were utilized to determine their antibacterial activity and results presented that Ho–ZnCo₂O₄/CNTs could not perform actively than others due to the selective inhibitory action against Staphylococcus aureus (S.A) and Klebsiella pneumoniae (K.P).</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2219 - 2231"},"PeriodicalIF":3.7,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Facile Synthesis of Aluminium Oxide NPs by Oxalis corniculata Leaves Extract for the Production of Bio-oil and Reduction of Methylene Blue Dye","authors":"Rida Khalid,&nbsp;Muhammad Imran Din,&nbsp;Zaib Hussain,&nbsp;Aneeqa Parveen,&nbsp;Ahsan Sharif,&nbsp;Sadia Ata","doi":"10.1007/s11244-026-02264-7","DOIUrl":"10.1007/s11244-026-02264-7","url":null,"abstract":"<div><p>This study investigates the novel synthesis of Aluminium Oxide nanoparticles using <i>Oxalis corniculata</i> leaves extract as a biogenic and eco-friendly approach. Absorption peak (lambda max) at 220 nm was obtained through UV–Vis spectrum. Scanning Electron Microscopy studies show the hexagonal rod-like morphology with an average size of 10 nm. The catalytic application of Aluminium Oxide nanoparticles in the reduction of Methylene Blue dye and the pyrolysis of corncob was also evaluated. The kinetic methods showed lower activation energy values for corncob with an aluminium oxide nanoparticles catalyst compared to pure corncob, indicating a facile degradation of biomass. The thermodynamic analysis using the Kissinger-Akahira-Sunose model for corncob pyrolysis in the presence of catalyst showed 98.36 kJ mol⁻¹, -34.89 Jmol⁻¹ K⁻¹, and 117.7 kJ mol⁻¹ values of Enthalpy, Entropy, and Gibbs free energy, respectively. The calorific value of obtained bio-oil with Aluminium Oxide nanoparticles was found to be 38.2 ± 0.01 MJ kg⁻¹, which was nearly equal to standard values of gasoline and diesel. The Aluminium Oxide nanoparticles also demonstrated complete mineralization of methylene blue dye in 35 min.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 17-18","pages":"2320 - 2335"},"PeriodicalIF":3.7,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}