Topics in Catalysis最新文献

{"title":"Characterization and Biological Activities of Non-polar and Polar Fractions of the Bark and Stem Extracts of Plumeria bicolor","authors":"Divyadeepika,&nbsp;Jyoti Joshi","doi":"10.1007/s11244-025-02220-x","DOIUrl":"10.1007/s11244-025-02220-x","url":null,"abstract":"<div><p><i>Plumeria bicolor</i> (<i>P. bicolor</i>), a small Central American tree species, is traditionally used for treating infections, inflammation, and digestive disorders. Pharmacological studies have confirmed their antioxidant, antimicrobial, and analgesic properties. The phytochemical composition of stem and bark extracts in various polar and non-polar solvents was determined using Gas Chromatography-Mass Spectrometry (GC–MS). This study presented the first comprehensive report on the GC–MS analysis of sequential reflux extracts of stem and bark in <i>P. bicolor</i>, revealing the presence of triterpenoids (lupeol, <i>α</i>- and <i>β</i>-amyrin), phytosterols (<i>γ</i>-sitosterol, campesterol), and fatty acid derivatives as major constituents. To evaluate whether these phytochemicals contribute to the biological activity of <i>P. bicolor</i>, we next assessed the antimicrobial potential of different extracts against bacterial and fungal strains. The crude extracts of plant <i>P. bicolor s</i>howed promising antimicrobial activities, viz. antibacterial and antifungal properties, by measuring the minimum inhibitory concentration (MIC). MIC values ranged from 50 µg/µL (against <i>A. niger</i>) to 1860 µg/µL (against <i>B. subtilis</i>), depending on the extract and microorganism. Notably, crude chloroform extract of stem consistently showed high activity against all antifungal strains <i>A. niger, C. albicans, F. oxysporum, and P. chrysogenum</i> showing inhibition zone ranging from 10 ± 0.374 to 30 ± 0.523 mm in 20–80 µL solution of extracts. Among these, <i>A. niger</i> displayed high sensitivity to all the crude extracts, demonstrating inhibition zone diameters ranging from 7 ± 0.152 to 30 ± 0.523 mm at a MIC of 20–80 µg/µL. Our findings highlight that <i>P. bicolor</i> stem and bark extracts are more effective against gram-negative strains (<i>E. coli</i> and <i>P. aeruginosa</i>) than gram-positive strains (<i>S. aureus</i> and <i>B. subtilis</i>), considering the microorganisms studied. Also, the black mold <i>Aspergillus niger</i> was found to be most susceptible to the crude chloroform and methanol fraction of bark and stem of <i>P. bicolor</i>.</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 8-11","pages":"1185 - 1199"},"PeriodicalIF":3.0,"publicationDate":"2025-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579158","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":"Reduced Graphene Oxide Loaded α-RuO2-TiO2 Nanocomposite: Synthesis, Characterizations and Photocatalytic Applications of Congo Red and Bismarck Brown Dyes","authors":"B. S. Ramya,&nbsp;G. Krishnamurthy","doi":"10.1007/s11244-025-02212-x","DOIUrl":"10.1007/s11244-025-02212-x","url":null,"abstract":"<div><p>The solgel-assisted synthesis was employed to fabricated reduced graphene oxide (rGO) supported α-RuO₂-TiO₂ nanocomposite in various weight percent ratios. Different spectroscopic techniques were used to investigate size, band gap, surface area, morphology and elemental compositions of α-RuO₂-TiO₂/rGO. In this study, Congo Red (CR) and Bismarck brown Y (BBY) have been chosen as model pollutants and the discoloration of these dyes was achieved within 45 min of irradiation. The photodegradation of CR and BBY dyes in the presence of these metal oxides, TiO₂, α-RuO₂, sample A, B and C and α-RuO₂-TiO₂/ rGO (D) were found to be 88, 65, 89, 93, 95, and 99%, while using BBY dye showed 91, 77, 90, 92, 95, and 98%. The degradation fragments for CR and BBY dyes were identified using liquid chromatography-mass spectrometry (LC-MS), and possible methods for the generation of degraded intermediates were predicted.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1313 - 1336"},"PeriodicalIF":3.0,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579580","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":"Degradation of High-Density Polyethylene Using CuO Nanoparticles Produced from Biological and Chemical Synthesis Route","authors":"Rajalakshmi Sridharan,&nbsp;B. Swathi Pandey,&nbsp;B. Senthil Rathi,&nbsp;P. Senthil Kumar,&nbsp;Veena Gayathri K.,&nbsp;Gayathri Rangasamy","doi":"10.1007/s11244-025-02195-9","DOIUrl":"10.1007/s11244-025-02195-9","url":null,"abstract":"<div><p>This study focuses on the bacterial and chemical synthesis of CuO nanoparticles and their application in the photocatalytic degradation of high-density polyethylene (HDPE). The band gap energies of the CuO nanoparticles synthesized via bacterial and chemical methods were found to be 1.48 and 1.46 eV, respectively. The particle sizes ranged from 16 to 32 nm for the bacterially synthesised nanoparticles and 55.7 to 75.9 nm for the chemically synthesised ones. Photocatalytic degradation of the HDPE sheet, confirmed by a weight loss of 20.54 ± 0.66% after 100 h of UV irradiation, was achieved using bacterially synthesized CuO nanoparticles. Response Surface Methodology (RSM) was employed to design a statistical model using Central Composite Design (CCD). The optimal nanoparticle concentration (29.6–30 mg) and photocatalysis duration (283–300 h) yielded a desirability score of 1.0. Gas Chromatography–Mass Spectrometry (GC–MS) was used to identify the metabolites produced before and after photocatalysis, further confirming HDPE degradation. Comparison of the bacterially and chemically synthesized CuO nanoparticles revealed negligible differences in photocatalytic performance. However, bacterially synthesized nanoparticles were selected for the scale-up process due to their smaller size and environmentally friendly synthesis. To the best of our knowledge, this is the first study reporting the degradation of HDPE using both chemically and biologically synthesized CuO nanoparticles.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 4-7","pages":"809 - 824"},"PeriodicalIF":3.0,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336831","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":"Effect of Cu Addition on the Selectivity of Ni-Based Catalysts for Methylcyclohexane Dehydrogenation","authors":"Pol Fernandez Reixach,&nbsp;Maria Soledad Chino Mamani,&nbsp;Efthymios Kantarelis","doi":"10.1007/s11244-025-02209-6","DOIUrl":"10.1007/s11244-025-02209-6","url":null,"abstract":"<div><p>The storage and distribution of H₂ represent major challenges for its widespread utilization. Liquid organic hydrogen carriers (LOHC), such as methylcyclohexane (MCH), offer a promising alternative by enabling H₂ delivery through dehydrogenation to toluene. Although Pt-based catalysts are the state of the art for this process, this study investigates Ni–Cu catalysts as non-noble metal alternative. For this purpose, two <b><i>γ</i></b>-Al₂O₃–supported bimetallic Ni-Cu catalysts were prepared at Cu/Ni atomic ratios of 0.25 and 0.56 and their activity and selectivity towards toluene were evaluated and compared with monometallic Pt (0.6 wt%), Ni (12.8 wt%) and Cu (20.0 wt%) <b><i>γ</i></b>-Al₂O₃–supported catalysts. The experimental evaluation was carried out in a fixed-bed reactor at a temperature and pressure of 320 °C and 1.5 bara respectively, and at a weight hourly space velocity of 2.2 h^{<b><i>−1</i></b>}. Characterization of the synthesized Ni–Cu catalysts indicated the absence of alloy formation under the synthesis conditions. Experimental results indicated that the bimetallic catalysts exhibited increased activity and selectivity to toluene compared to the monometallic counterparts (i.e. Ni, Cu). A positive correlation was observed between copper addition and MCH conversion, with the Ni–Cu catalyst having a Cu/Ni ratio of 0.56 exhibiting a sevenfold increase compared to the monometallic Ni (7% compared to 1%) at the studied conditions. Nevertheless, the performance remained considerably lower than that of Pt-based catalysts, which achieved 33% MCH, under the conditions studied. Moreover, the selectivity towards toluene was observed to increase with time on stream stream, initially reaching 88% for Cu/Ni = 0.56, comparing with 60% and 85% for Ni/<b><i>γ</i></b>-Al₂O₃ and Pt/<b><i>γ</i></b>-Al₂O₃ respectively. This results suggests that Cu addition can inhibit the hydrodealkylation of toluene, thereby suppressing the dehydrogenation selectivity of unpromoted Pt catalysts. The enhancement in activity of NiCu catalysts is plausibly attributed to the Ni–Cu interactions at the interface, wehreas the improvement in selectivity is considered to arise from the preferential occupation of the C–C cleavage sites on Ni by Cu. However, catalyst stability was not improved by Cu addition with the deactivation rate being positively correlated with Cu content.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"68 20","pages":"2478 - 2493"},"PeriodicalIF":3.0,"publicationDate":"2025-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-025-02209-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145675421","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":"Synthesis of TiO2/Co3O4 Composites and their Enhanced Performance in the Electrocatalytic Hydrogen Evolution Reaction","authors":"Changshun Zheng,&nbsp;Fen Qiao","doi":"10.1007/s11244-025-02227-4","DOIUrl":"10.1007/s11244-025-02227-4","url":null,"abstract":"<div><p>Aimed to enhance the electrocatalytic efficiency of the Electrocatalytic hydrogen evolution reaction (HER) by synthesizing TiO₂/Co₃O₄ composites as highly efficient HER electrocatalysts through a two-step hydrothermal reaction method. Addressing the limitations of conventional TiO₂ materials, such as poor electrical conductivity and limited adsorption/desorption ability of hydrogen intermediates, our strategy used the superior electrical conductivity and catalytic activity of Co₃O₄. Furthermore, this method significantly increased the surface roughness of TiO₂ microspheres, thereby exposing a greater number of electrocatalytic active sites. The resulting TiO₂/Co₃O₄/CC composites exhibited remarkable performance in the HER process, achieving a current density of 10 mA·cm⁻² at a low overpotential of only 150 mV. This outcome indicates fast reaction kinetics and significantly enhanced electrocatalytic activity. Notably, the composite demonstrated robust stability during long-term electrolysis experiments, maintaining stable operation at a current density of 10 mA·cm⁻² for 20 h. These findings provide valuable insights for the design of cost-effective catalysts and the optimization of HER performance.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 1-3","pages":"2 - 12"},"PeriodicalIF":3.0,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983240","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":"Testing of X-Fe2O4/Al2O3 (X = NiZn, NiMg, MgZn) Composite Catalysts for Microwave-Driven Conversion of HDPE Plastic into Carbon Nanotubes and Hydrogen","authors":"Bilal Shoukat,&nbsp;Hammad Hussain,&nbsp;Muhammad Yasin Naz,&nbsp;Yasin Khan,&nbsp;Yaning Zhang","doi":"10.1007/s11244-025-02210-z","DOIUrl":"10.1007/s11244-025-02210-z","url":null,"abstract":"<div><p>This study examined a series of X–Fe₂O₄/Al₂O₃ (X = NiZn, NiMg, MgZn) composite catalysts for microwave-assisted catalytic breakdown of high-density polyethylene (HDPE) waste into hydrogen fuel and carbon nanotubes (CNTs). A single-stage catalytic pyrolysis was conducted at 450 °C using Al₂O₃–NiZnFe₂O₄, Al₂O₃–NiMgFe₂O₄, and Al₂O₃–MgZnFe₂O₄) composite catalysts. The catalysts were characterized before pyrolysis using XRD, UV-Vis spectroscopy, FTIR, and SEM, and their physicochemical properties were correlated with their catalytic performance. Among the tested systems, Al₂O₃–NiZnFe₂O₄ showed the highest efficiency, producing 47.03 mmol/g_plastic of hydrogen and 287 mg/g_plastic of CNTs. This enhanced activity was attributed to its smaller particle size, greater dispersion, and more effective microwave absorption, which facilitated the creation of localized hot spots and promoted the cracking of polymer chains. The presence of Al₂O₃ in the composites further supported hydrogen release and CNT growth by converting intermediate hydrocarbons formed during thermal cracking. A proposed reaction mechanism includes polymer chain scission, catalytic dehydrogenation, and carbon deposition on ferrite nanoparticles. These results demonstrate the potential of microwave-responsive ferrite–Al₂O₃ catalysts for the eco-friendly recycling of plastics into clean hydrogen and valuable carbon nanomaterials.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 4-7","pages":"1055 - 1073"},"PeriodicalIF":3.0,"publicationDate":"2025-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342931","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":"Green Synthesis of Mn2V2O7 Nanoparticles and Its Dual Functionality in Electrochemical Urea Sensing and Photocatalytic Dye Degradation","authors":"H. Anantharama,&nbsp;J. R. Naveen Kumar,&nbsp;M. Rohit,&nbsp;Divya R. Basavannavar,&nbsp;B. M. Praveen,&nbsp;Asad Syed,&nbsp;R. Harini,&nbsp;G. Nagaraju,&nbsp;Bharath K. Devendra","doi":"10.1007/s11244-025-02213-w","DOIUrl":"10.1007/s11244-025-02213-w","url":null,"abstract":"<div><p>The solution combustion approach was used to create manganese vanadate (Mn₂V₂O₇) nanoparticles (NPs) at 500 °C using manganese nitrate (Mn(NO₃)₂), ammonium metavanadate (NH₄VO₃) and chia seeds as fuel. Using a variety of methods, such as photoluminescence (PL), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis), and X-ray diffraction (XRD), a thorough examination of the synthesized NPs was carried out to look into their surface morphology, optical characteristics, and crystal structure. These nanoparticles were also utilized in the photocatalytic reduction of rose bengal dye. The produced Mn₂V₂O₇ NPs, with a crystal size of 26.03 nm, were found to have a monoclinic crystalline structure, according to XRD examination. To ascertain the form of the NPs, scanning electron microscopy was employed. Additionally, the produced NPs were used to detect urea via dropcasting and electrode modification methods. Before beginning any experiment, the electrodes were air-dried overnight. This work demonstrates the Mn₂V₂O₇ NPs’ multifunctionality, which makes them attractive options for a range of uses, such as photocatalysis and sensing.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1152 - 1163"},"PeriodicalIF":3.0,"publicationDate":"2025-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579474","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":"Decoding the Mechanisms of Dyes and Heavy Metals via NiO Nanoparticles: Kinetic and Isothermal Perspectives","authors":"M. Mahadeva Swamy,&nbsp;B. Roopashree,&nbsp;Bincy Rose Vergis,&nbsp;A. S. Sowmyashree,&nbsp;D. Kathyayani","doi":"10.1007/s11244-025-02215-8","DOIUrl":"10.1007/s11244-025-02215-8","url":null,"abstract":"<div><p>In this study, Amaranth dye (AD) and chromium (VI) were extracted from aqueous solutions using a batch adsorption technique employing nickel oxide nanoparticles (NiO NPs) as adsorbents. The physical properties of the prepared NPs were characterized using Energy-dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction studies (XRD), UV-visible spectroscopy, Bandgap studies, and point of zero charge (pH pZC). Various parameters, including adsorbent concentrations (0.01–0.06 g), pH (2–12), dye concentration (10–100 mg/L), contact time (10–140 min), and temperature (303 K), were investigated to assess their impact on adsorption efficiency. The kinetic data followed by the pseudo-second-order model, and the Langmuir isotherm best described the adsorption behaviour at equilibrium, also including thermodynamic analysis. Adsorption capacity (qm) increased with contact time, and while pH had an inverse effect on Chromium(VI) adsorption, it enhanced Amaranth dye removal. The results demonstrate the potential of green-synthesized NiO NPs for effective dye and heavy metal removal.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1361 - 1374"},"PeriodicalIF":3.0,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579174","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":"Influence of Metal-Support Interaction on Anisole Hydrodeoxygenation Activity on Noble Metal TiO2-Based Catalysts","authors":"Albert Miró i Rovira,&nbsp;Jørgen Skjæveland,&nbsp;Kishore Rajendran,&nbsp;Tina Bergh,&nbsp;Petter Tingelstad,&nbsp;Rune Myrstad,&nbsp;De Chen","doi":"10.1007/s11244-025-02207-8","DOIUrl":"10.1007/s11244-025-02207-8","url":null,"abstract":"<div><p>Hydrodeoxygenation (HDO) is a critical process for upgrading biomass-derived feedstocks. It enables the removal of oxygen, which improves stability, energy density, and compatibility with existing fuel infrastructure. This study examines the catalytic performance of titania-supported noble metals (ruthenium [Ru], rhodium [Rh], palladium [Pd], silver [Ag], iridium [Ir], platinum [Pt], and gold [Au]) in the HDO of anisole, a model compound for lignin-derived oxygenates. The catalysts were prepared via incipient wetness impregnation and characterized using X-ray fluorescence (XRF), nitrogen physisorption (N₂-physisorption), X-ray diffraction (XRD), carbon monoxide (CO) chemisorption, thermogravimetric reduction (TPR), ammonia-temperature-programmed desorption (NH₃-TPD), hydrogen-temperature-programmed desorption (H₂-TPD), and transmission electron microscopy (TEM). The results reveal that metal-support interactions significantly influence metal dispersion, activity, and selectivity. Rh and Pt catalysts exhibited the highest anisole conversion and benzene selectivity due to their small particle sizes, high dispersion, and strong hydrogen spillover effects. Conversely, Ag and Au catalysts demonstrated limited activity: Ag induced a phase transition in TiO₂, and Au formed large particles. Residual chlorine from precursor salts notably affected the performance of Ru/TiO₂ and Ir/TiO₂. Reducible TiO₂ support was found to enhance demethoxylation activity synergistically compared to SiO₂, highlighting the importance of support reducibility for HDO. This work provides insights into the structure-function relationships of noble metal/TiO₂ catalysts.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"68 20","pages":"2549 - 2564"},"PeriodicalIF":3.0,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-025-02207-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145675653","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":"Multifunctional MOF-5@ZnCo2O4 Composite for Photocatalytic Dye Degradation of Crystal Violet Dye and Electrocatalytic Applications: Hydrogen Evolution Reaction and Supercapacitor Studies","authors":"Savitha Hosamane,&nbsp;Nagaraju Kottam,&nbsp;Aishwarya Chalil Suresh,&nbsp;Mallappa Mahanthappa,&nbsp;Mohd Afzal","doi":"10.1007/s11244-025-02198-6","DOIUrl":"10.1007/s11244-025-02198-6","url":null,"abstract":"<div><p>The metal-organic framework with ZnCo₂O₄ combined (MOF-5@ZnCo₂O₄) composite is presented in this study as a flexible and state-of-the-art basis for sophisticated waste water treatment, hydrogen evolution reaction (HER) and supercapacitor devices. The impact of ZnCo₂O₄ doping on MOF-5 structure, which enhances stability and photo/electrochemical performance, is highlighted in this work. MOF-5@ZnCo₂O₄ is prepared by a simple solution combustion and solvothermal synthesis method and well characterised by various spectroscopic techniques. The MOF-5@ZnCo₂O₄ composite exhibits pseudo first order reaction kinetics and 98% degradation capacity observed for crystal violet dye. The composite MOF-5@ZnCo₂O₄ demonstrated a Tafel slope of 125 mV/dec in an acidic solution and a minimal overpotential of 358 mV for HER applications. Additionally, at 10 mA/cm², it remains constant for 12 h. Furthermore, we conducted research on MOF-5@ZnCo₂O₄ composite for supercapacitors. Its specific capacitance is 33 F/g at a current density of 2 A/g. Our results put this composite at the forefront by showing enhanced performance and adaptability in addressing the challenges of energy and constantly shifting environment.</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 8-11","pages":"1114 - 1130"},"PeriodicalIF":3.0,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579173","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}