Topics in Catalysis最新文献_第4页

Fabrication of Recyclable Nanocomposite Based On Nanocellulose Supported CaO for Photocatalytic Degradation of Organic Dyes 基于纳米纤维素负载氧化钙的可回收光催化降解有机染料纳米复合材料的制备

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-04-04 DOI: 10.1007/s11244-026-02284-3

Jumna Yoonus, Asha Radhakrishnan, A. Fathima Beevi, Beena Bhaskaran

{"title":"Fabrication of Recyclable Nanocomposite Based On Nanocellulose Supported CaO for Photocatalytic Degradation of Organic Dyes","authors":"Jumna Yoonus, Asha Radhakrishnan, A. Fathima Beevi, Beena Bhaskaran","doi":"10.1007/s11244-026-02284-3","DOIUrl":"10.1007/s11244-026-02284-3","url":null,"abstract":"<div><p>Numerous studies have investigated dye degradation; however, the development of eco-friendly, sustainable, and recyclable photocatalysts with efficient visible light activity remains limited. Conventional metal oxides typically exhibit wide band gaps and rapid recombination of photogenerated charge carriers, resulting in poor photocatalytic performance. The synergistic interaction between metal oxide nanoparticles and the biopolymer matrix addresses major drawbacks of bare metal oxides, such as easy agglomeration and low surface area. The present work focuses on an environmentally benign synthesis of a novel photocatalyst, nano-calcium oxide incorporated nanocellulose composite (CaO/NC) and subsequent photodegradation of organic dyes, namely Congo red (CR) and Malachite green (MG) under visible light irradiation. The synthesized material was characterized by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, UV–Vis spectroscopy, Brunauer-Emmett-Teller gas adsorption (BET), Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM). The visible light-driven photocatalytic performance of the obtained CaO/NC composite was evaluated by monitoring the photodegradation of congo red (CR) and malachite green (MG). The synthesized nanocomposite was found to be an efficient photocatalyst and exhibited degradation efficiencies of 84% and 98% for Congo red and Malachite green degradation, respectively. The mechanism of photocatalytic degradation of dyes is also discussed.</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 15-16","pages":"2264 - 2276"},"PeriodicalIF":3.7,"publicationDate":"2026-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695090","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}

引用次数: 0

Structural, Morphological and Optical Properties of CuO-NiO-Mn3O4Nanocomposite for Photocatalytic Cr(VI) Reduction 光催化还原Cr（VI）的cuo - nio - mn3o4纳米复合材料的结构、形态和光学性质

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-24 DOI: 10.1007/s11244-026-02285-2

Elumalai Arulkumar, Gopinath Dhamodaran, Essam H. Ibrahim, Mohd. Shkir

{"title":"Structural, Morphological and Optical Properties of CuO-NiO-Mn3O4Nanocomposite for Photocatalytic Cr(VI) Reduction","authors":"Elumalai Arulkumar, Gopinath Dhamodaran, Essam H. Ibrahim, Mohd. Shkir","doi":"10.1007/s11244-026-02285-2","DOIUrl":"10.1007/s11244-026-02285-2","url":null,"abstract":"<div><p>In this study, CuO-NiO-Mn<sub>3</sub>O<sub>4</sub> nanocomposites (NC) and their pristine materials were synthesized via the thermal decomposition method and characterized using XRD, Raman, SEM with EDX, TEM, XPS, UV-Vis and PL spectroscopy. XRD analysis confirmed the monoclinic, cubic and tetragonal phases of CuO, NiO and Mn<sub>3</sub>O<sub>4</sub>, respectively, in both pristine and composite forms. Raman spectroscopy validated the phase purity and vibrational characteristics such as Ag, Bg, TO, LO and A<sub>1</sub>g modes of all the prepared samples. SEM revealed distinct morphologies for the pristine NPs, showing spherical CuO, flaky clustered NiO, and bulk Mn<sub>3</sub>O<sub>4</sub>, while the NC displayed a mixed morphology of small and large particles, reflecting its composite nature. TEM analysis further confirmed particle size variation, with pristine NPs measuring 200–400 nm and the NC showing a reduction to 50–100 nm, indicating size refinement upon composite formation. EDX and XPS analysis verified the occurrence of Cu, Ni, Mn and O elements along with their chemical states. The CuO-NiO-Mn<sub>3</sub>O<sub>4</sub>NC exhibited a reduced energy gap (E<sub>g</sub> = 1.11 eV) compared to CuO (2.41 eV), NiO (2.67 eV) and Mn<sub>3</sub>O<sub>4</sub> (1.21 eV), enhancing its photocatalytic performance. Photocatalytic Cr(VI) reduction studies demonstrated that 30 mg of CuO-NiO-Mn<sub>3</sub>O<sub>4</sub> NC achieved 93% reduction efficiency with a rate constant of k<sub>obs</sub> = 0.09286 min<sup>− 1</sup>. The composite exhibited excellent cycling stability over five repeated cycles, with electrons (e<sup>−</sup>) and superoxide radicals (<sup>•</sup>O<sub>2</sub><sup>−</sup>) identified as key contributors to the reduction process at pH 3 ± 0.1.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 17-18","pages":"2504 - 2520"},"PeriodicalIF":3.7,"publicationDate":"2026-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099144","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}

引用次数: 0

CdWO4/g-C3N5 Heterostructures: Synthesis and Enhanced Photocatalytic Degradation of Methyl Violet CdWO4/g-C3N5异质结构：甲基紫的合成及增强光催化降解

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-21 DOI: 10.1007/s11244-026-02280-7

Mohan Vishal, Kumar Aravindraj, Selvaraj Mohana Roopan, Arunagiri Sharmila, Chinnadurai Immanuel Selvaraj, Sankar Hari Prakash, Kavitha Sivakumaran Durai Anbu

{"title":"CdWO4/g-C3N5 Heterostructures: Synthesis and Enhanced Photocatalytic Degradation of Methyl Violet","authors":"Mohan Vishal, Kumar Aravindraj, Selvaraj Mohana Roopan, Arunagiri Sharmila, Chinnadurai Immanuel Selvaraj, Sankar Hari Prakash, Kavitha Sivakumaran Durai Anbu","doi":"10.1007/s11244-026-02280-7","DOIUrl":"10.1007/s11244-026-02280-7","url":null,"abstract":"<div>\u0000 \u0000 <p>In the current work, a CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> nanocomposite was synthesized using a mixed calcination process. The properties like structural, optical, electronic and morphological features of the prepared material were analysed using a range of instrumentation techniques including XRD, FTIR, UV-Vis spectroscopy, FE-SEM, HR-TEM, and XPS spectroscopy. The photocatalytic activity of CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> heterostructure material was evaluated using methyl violet (MV) dye as a target pollutant. Key parameters including catalyst dose, initial concentration of the dye, and solution pH were optimised to evaluate their effect on degradation efficiency. The study achieved a degradation efficiency of about 83% for methyl violet dye by the CdWO<sub>4</sub>/g-C<sub>3</sub>N<sub>5</sub> nanocomposite material under optimized conditions within a period of 90 min. The study also considered a mixture of dyes as a pollutant. Reactive species trapping experiments indicated that hydroxyl radicals (•OH) and photogenerated holes (h<sup>+</sup>) play dominant roles in the photocatalytic degradation process.</p>\u0000 </div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2297 - 2306"},"PeriodicalIF":3.7,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695564","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}

引用次数: 0

Nanomaterial-Assisted Photocatalytic Degradation of Low-Density Polyethylene: Towards an Eco-Friendly and Circular Recycling Strategy 纳米材料辅助光催化降解低密度聚乙烯：迈向环保和循环回收策略

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-21 DOI: 10.1007/s11244-026-02268-3

M. S. S. R. Tejaswini, Pankaj Pathak

{"title":"Nanomaterial-Assisted Photocatalytic Degradation of Low-Density Polyethylene: Towards an Eco-Friendly and Circular Recycling Strategy","authors":"M. S. S. R. Tejaswini, Pankaj Pathak","doi":"10.1007/s11244-026-02268-3","DOIUrl":"10.1007/s11244-026-02268-3","url":null,"abstract":"<div><p> This study investigates and compares the efficiency of photocatalytic degradation of low-density polyethylene (LDPE) films using nanomaterial catalysts—titanium dioxide (TiO<sub>2</sub>), zinc oxide (ZnO), and silicon dioxide (SiO<sub>2</sub>)—in a controlled photochemical reactor. The effects of key operational parameters, including the light source ultraviolet (UV) and visible (VIS), catalyst loading percentage, pH, and exposure time, were systematically evaluated to identify the conditions yielding maximum photodegradation efficiency. Significant physicochemical, morphological, and molecular structural alterations were observed in all LDPE–nanocatalyst composites following 288 h of irradiation. Kinetic analysis revealed that the photocatalytic degradation process follows a first-order kinetic model, with the rate of degradation strongly influenced by both the light source and the pH of the reaction medium. The maximum photodegradation was observed for LDPE-TiO<sub>2 UV</sub>, LDPE-ZnO <sub>VIS</sub> and LDPE-SiO<sub>2 VIS</sub> films at pH 4, 9 and 11 with a degradation rate of 9.25, 7.21 and 5.32%, respectively. Based on the results, it is concluded that the photo-degradation occurs in order of TiO<sub>2 UV</sub> > ZnO <sub>VIS</sub> > SiO<sub>2 VIS</sub> > TiO<sub>2 VIS</sub> > ZnO <sub>UV</sub> > SiO<sub>2 UV</sub>, respectively. Additionally, the intermediate compounds of LDPE nanocomposite (LDPE-TiO<sub>2 UV</sub>, LDPE-ZnO <sub>VIS</sub> and LDPE-SiO<sub>2 VIS</sub>) were determined with more than 60% abundance of 6-dimethyldecahydronaphthalene, acetophenone and p-methyl benzaldehyde. These compounds are primarily used as a resource material for the manufacturing of chemical drugs, solvents, stabilizers, solvents. Thus, it showed an insight to convert waste plastics into secondary resource materials and reduce the plastic pollution from ambient environment.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2204 - 2218"},"PeriodicalIF":3.7,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695565","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}

引用次数: 0

Enhanced Photocatalytic Degradation of Congo Red Dye Using Nickel-Doped TiO2 Nanoparticles Synthesized by Glycerol-Assisted Co-Precipitation: A Comparative Study with Pure TiO2 甘油辅助共沉淀法合成镍掺杂TiO2纳米颗粒增强光催化刚果红染料降解研究

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-21 DOI: 10.1007/s11244-026-02266-5

P. Anu Tharu, Jaya M. Soney, T. Dhannia

{"title":"Enhanced Photocatalytic Degradation of Congo Red Dye Using Nickel-Doped TiO2 Nanoparticles Synthesized by Glycerol-Assisted Co-Precipitation: A Comparative Study with Pure TiO2","authors":"P. Anu Tharu, Jaya M. Soney, T. Dhannia","doi":"10.1007/s11244-026-02266-5","DOIUrl":"10.1007/s11244-026-02266-5","url":null,"abstract":"<div><p>Photocatalytic degradation of Congo Red (CR) dye is investigated using annealed (600 °C) TiO₂ and nickel-doped (Ni-doped) TiO₂ nanoparticles (NPs) with doping concentrations 3%, 6%, and 9% as catalysts, synthesized by glycerine-assisted co-precipitation method with microwave irradiation. The morphological, thermal, and optical characterisations of the samples are examined using various material characterization methods. Undoped TiO₂ NPs annealed at 600 °C exhibit a bandgap energy 3.13 eV, which decreases to 2.48 eV,2.46 eV, and 2.23 eV for 3%,6% and 9% Ni-doped TiO₂ NPs, respectively, under the same annealing conditions. 30 mg catalyst dosage is used under 120 min of UV irradiation to investigate the photocatalytic degradation efficiency of CR dye at pH 5. Among different treatments, the 9% Ni-doped TiO<sub>2</sub> NPs (annealed at 600 °C) exhibit the highest degradation efficiency (99.5%), while the 3% and 6% Ni-doped TiO₂ NPs show degradation efficiencies 98.9% and 99.2%, respectively. Regression analysis is performed to evaluate the suitability of the models and the resulting statistical parameters confirm their reliability in predicting the photocatalytic activity. The CR degradation efficiency of 9% Ni-doped TiO₂ NPs annealed at 600 °C remains at 97.3% after the fourth cycle, indicating good catalytic stability. Future studies may focus on heterojunction coupling strategies to achieve complete photocatalytic degradation and stability of Ni-doped TiO₂ NPs.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"1998 - 2015"},"PeriodicalIF":3.7,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695563","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}

引用次数: 0

Facile Synthesis of MgFe2O4 Nanoparticles by Green and Chemical Methods for Comparative Analysis on Wastewater Treatment and Antibacterial Properties 绿色法与化学法简便合成纳米二氧化镁废水处理及抗菌性能对比分析

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-17 DOI: 10.1007/s11244-026-02277-2

Sruthy Xavier, P. G. Anusree, Savitha Mathew, Sherin Thomas

{"title":"Facile Synthesis of MgFe2O4 Nanoparticles by Green and Chemical Methods for Comparative Analysis on Wastewater Treatment and Antibacterial Properties","authors":"Sruthy Xavier, P. G. Anusree, Savitha Mathew, Sherin Thomas","doi":"10.1007/s11244-026-02277-2","DOIUrl":"10.1007/s11244-026-02277-2","url":null,"abstract":"<div><p>A convenient and eco-friendly one-pot synthesis method for nanomaterials with diverse applications holds significant societal benefits. This study presents a comparative analysis of the facile synthesis of MgFe<sub>2</sub>O<sub>4</sub> nanoparticles through biological (MFB) and chemical (MFC) methods, emphasising their potential in dye degradation and antibacterial applications. Structural characterisation confirmed the phase purity and crystalline nature of both samples. Morphological analysis revealed slight differences between the two, while additional insights were provided by HRTEM, SAED, FTIR, and DRS analyses. The characterization results of MFB showed superior results such as comparatively smaller particle size, porous morphology, low band gap and presence of secondary metabolites etc. all of which can directly influence the photocatalytic and antibacterial properties of the sample. Photocatalytic degradation studies using an incandescent tungsten bulb for Methylene blue showed degradation rates of 79.48% for MFC and 94.74% for MFB within 180 min. Both samples demonstrated excellent performance across various pH conditions and light sources, with MFB showing relatively superior results. Furthermore, reusability studies indicated sustained efficiency over multiple cycles. In terms of antibacterial properties, both samples showed effective activity against selected gram-positive and gram-negative bacteria, <i>Proteus vulgaris</i>, <i>Staphylococcus aureus</i>, <i>Bacillus subtilis</i> and <i>Pseudomonas denitrificans</i> with MFB displaying notably higher antibacterial efficacy.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2277 - 2296"},"PeriodicalIF":3.7,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695609","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}

引用次数: 0

NHC based Pd-PEPPSI complexes: synthesis, computational studies and application for Suzuki and direct arylation reactions NHC基Pd-PEPPSI配合物：Suzuki和直接芳基化反应的合成、计算研究和应用

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-17 DOI: 10.1007/s11244-026-02281-6

Nour-Elhouda Belazghem, Öznur Doğan Ulu, Sümeyya Serin, İlkay Yıldırım, Khaled Sekkoum, Namık Özdemir, İsmail Özdemir

{"title":"NHC based Pd-PEPPSI complexes: synthesis, computational studies and application for Suzuki and direct arylation reactions","authors":"Nour-Elhouda Belazghem, Öznur Doğan Ulu, Sümeyya Serin, İlkay Yıldırım, Khaled Sekkoum, Namık Özdemir, İsmail Özdemir","doi":"10.1007/s11244-026-02281-6","DOIUrl":"10.1007/s11244-026-02281-6","url":null,"abstract":"<div><p>A series of novel air- and moisture-resistant NHC-based pyridine containing palladium PEPPSI-type Pd(II) complexes (<b>2a-e</b>) were synthesized and characterized. The structures of all synthesized complexes were determined by various spectroscopic techniques. In addition, the structure of <b>2b</b> was elucidated by single X-ray crystallography. The structural and electronic properties of <b>2a-e</b> were further investigated using DFT calculations, which provided valuable insights into thermodynamic parameters, frontier molecular orbitals, and natural bond orbital interactions. The experimental and theoretical data showed strong agreement, confirming the robustness of the applied methodology. The complexes were successfully employed in the Suzuki cross-coupling of phenylboronic acid with aryl chlorides using green solvents. Also, the complexes were tested for direct arylation reactions and obtained mild to good yields.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 19","pages":"2808 - 2822"},"PeriodicalIF":3.7,"publicationDate":"2026-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-026-02281-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176805","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}

引用次数: 0

Hybrid Greywater Photocatalysis with Immobilized TiO₂: Kinetics and Landscape-Integrated Module Validation 固定化二氧化钛混合灰水光催化：动力学和景观集成模块验证

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-09 DOI: 10.1007/s11244-026-02278-1

David Contreras, Patricia Puentes

{"title":"Hybrid Greywater Photocatalysis with Immobilized TiO₂: Kinetics and Landscape-Integrated Module Validation","authors":"David Contreras, Patricia Puentes","doi":"10.1007/s11244-026-02278-1","DOIUrl":"10.1007/s11244-026-02278-1","url":null,"abstract":"<div><p>Photocatalysis is increasingly recognized as a key strategy for the degradation of recalcitrant organic contaminants in water, yet its transition from laboratory studies to real-scale applications remains limited. In this work, we report the development and validation of a hybrid photocatalytic module for greywater treatment, integrating immobilized TiO₂ reactors with pre- and post-activated carbon filtration. The system was designed for household use and architecturally integrated into a landscape-style planter, providing both functional water reuse and aesthetic acceptance. Field campaigns with real shower greywater demonstrated the system’s robustness across variable influent conditions (COD 90–248 mg L⁻¹, turbidity 5–39 NTU). The module consistently achieved COD removals up to 98%, BOD₅ reductions to below detection, turbidity values < 3 NTU, and full microbiological inactivation (E. coli non-detect). Under triclosan-enriched conditions (~ 22 mg L⁻¹), complete removal was obtained within 3 h. Kinetic analysis revealed a two-step process involving diffusion-controlled desorption followed by heterogeneous photocatalytic degradation, adequately described by a Langmuir–Freundlich model (R² = 0.97). By combining immobilized catalyst design, mechanistic validation, and module-scale operation, this study demonstrates a pathway for advancing photocatalysis from controlled experiments toward TRL 5–6 applications. The hybrid and landscape-integrated configuration highlights the potential of photocatalytic catalysis not only for pollutant abatement but also for socially acceptable, decentralized water reuse technologies.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 13-14","pages":"1870 - 1885"},"PeriodicalIF":3.7,"publicationDate":"2026-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386052","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}

引用次数: 0

Preface to Sustainable Inorganic Nanocatalysts: Applications in Environmental and Energy Systems 前言可持续无机纳米催化剂：在环境和能源系统中的应用

IF 3 3区化学

Topics in Catalysis Pub Date : 2026-03-09 DOI: 10.1007/s11244-026-02279-0

Ramachandra Naik, H. P. Nagaswarupa, Ganesh Koyyada

引用次数: 0

Enhanced Supercapacitive and Photocatalytic Performance of Mn2%N5%WO3 Nanomaterials: Synthesis, Characterizations, and Dual Applications Mn2%N5%WO3纳米材料的超电容和光催化性能：合成、表征和双重应用

IF 3.7 3区化学

Topics in Catalysis Pub Date : 2026-03-03 DOI: 10.1007/s11244-026-02275-4

Muhammad Tauseef Qureshi, Hassan Imam Rizvi, Ayesha Mushtaq, Tahir Iqbal, Umer Farooq, Sabah Kausar, Ghazala Yunus, Abdul Moiz Mohammed, Azza Mohamed Khaled

{"title":"Enhanced Supercapacitive and Photocatalytic Performance of Mn2%N5%WO3 Nanomaterials: Synthesis, Characterizations, and Dual Applications","authors":"Muhammad Tauseef Qureshi, Hassan Imam Rizvi, Ayesha Mushtaq, Tahir Iqbal, Umer Farooq, Sabah Kausar, Ghazala Yunus, Abdul Moiz Mohammed, Azza Mohamed Khaled","doi":"10.1007/s11244-026-02275-4","DOIUrl":"10.1007/s11244-026-02275-4","url":null,"abstract":"<div><p>This research work reports the synthesis of Mn and N codoped WO<sub>3</sub> nanostructures by coprecipitation method. These nanomaterials were characterized by X-ray diffraction, Ultraviolent-visible spectroscopy, scanning electron microscopy, energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy to evaluate various properties. Bandgap of WO<sub>3</sub> was tuned from 2.53 to 1.87 eV by addition of Mn (2% by wt.) and N (5% by wt.) whereas the XRD study validated the stability of WO<sub>3</sub> as it retained its orthorhombic structure after the addition of codopants but decreased the average crystallite size. WO<sub>3</sub>, Mn<sub>2%</sub>-N<sub>1%</sub>-WO<sub>3</sub> and Mn<sub>2%</sub>-N<sub>5%</sub>-WO<sub>3</sub> were analyzed by CV, GCD and EIS analysis to verify the optimizations in electrochemical properties of pure WO<sub>3</sub> by codoping. Mn<sub>2%</sub>-N<sub>5%</sub>-WO<sub>3</sub> showed better energy storage applications, as evident by GCD analysis as the Mn<sub>2%</sub>-N<sub>5%</sub>-WO<sub>3</sub> showed C<sub>sp</sub> of 896.88 F/g, 323.9 Wh/kg Energy density and 1799.9 W/kg Power density. During photocatalytic degradation process for 175 min, WO<sub>3</sub> and Mn<sub>2%</sub>-N<sub>5%</sub>-WO<sub>3</sub> showed 38.41 and 93.11% degradation for MB; 23.3 and 81.9% degradation for Leflox respectively. Therefore, Mn-N-WO<sub>3</sub> is a potential candidate for the removal of harmful pollutants as well as electrode materials for supercapacitors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><img></picture></div></div></figure></div></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2245 - 2263"},"PeriodicalIF":3.7,"publicationDate":"2026-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695083","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}

引用次数: 0