Topics in Catalysis最新文献

{"title":"Solution-Based Fabrication of Ag/Anatase-/Rutile-TiO2 Composites for Visible-Light Photocatalytic Applications","authors":"C.-T. Wu,&nbsp;T. N. N. Nguyen,&nbsp;M.-Y. Lin,&nbsp;M.-Y. Chen,&nbsp;K.-S. Chang","doi":"10.1007/s11244-025-02246-1","DOIUrl":"10.1007/s11244-025-02246-1","url":null,"abstract":"<div><p>Multijunction composites of Ag-decorated anatase-/rutile-TiO₂ (Ag/A-/R-TiO₂) heterostructures were synthesized for efficient visible-light-driven photodegradation and disinfection. The A-TiO₂ layer was spin-coated onto the hydrothermally grown R-TiO₂ nanorod array films, followed by decoration with Ag nanoparticles via chemical reduction on the A-/R-TiO₂ surface. The crystalline phases, morphologies, microstructures, and optical properties of the prepared samples were investigated. The composite after forming gas annealing (Ag/A-/R-TiO₂–FGA) exhibited outstanding photodegradation performance, achieving 100% degradation of Rhodamine B in 80 min under visible-light irradiation. The sample also exhibited promising antibacterial performance, with approximately 82% of bacteriophage MS2 disinfected in 40 min under visible-light irradiation. Energy band structures were constructed to elucidate these superior activities, which were synergistically caused by improved visible-light absorption owing to multiple light scattering in the R-TiO₂ nanorod arrays, localized surface plasmon resonance induced by the reduced oxidation of the Ag nanoparticles, and charge carrier transport facilitated by the formation of multi-heterojunctions and a dye-sensitized process. Our results highlight the potential of the Ag/A-/R-TiO₂ composite for practical environmental applications under visible light illumination.</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":"2161 - 2174"},"PeriodicalIF":3.7,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695347","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":"Co/Zn MOF@rGO Hybrid Composite as a Highly Selective and Sensitive Non-enzymatic Electrochemical Glucose Sensor","authors":"Burragoni Sravanthi Goud,&nbsp;Satyanarayana Moru,&nbsp;Saravanan Pandiaraj,&nbsp;Ramachandra Naik,&nbsp;Prabhakar Thota,&nbsp;Ganesh Koyyada,&nbsp;Jae Hong Kim","doi":"10.1007/s11244-025-02240-7","DOIUrl":"10.1007/s11244-025-02240-7","url":null,"abstract":"<div><p>Non-enzymatic glucose sensors with promising electrochemical activity, high sensitivity, selectivity and stability are booming in a variety of fields. Herein, we have successfully synthesized the Co and Co/Zn-MOF materials and evaluated for the glucose sensing application. The successful preparation of Co and Co/Zn-MOF were confirmed by using the XRD, XPS, SEM and FT-IR characterizations. The detailed N₂ adsorption-desorption analysis has revealed the higher surface area, pore size and volume for the Co/Zn-MOF compared to Co-MOF. Remarkably, the Co/Zn-MOF@rGO showed higher sensing ability with a limit of detection (LOD) of 0.67 µM compared to that of the Co-MOF with an LOD of 1.65 µM. The lowest LOD of Co/Zn MOF@rGO might be due to the enhanced surface area and charge transportation. The as-prepared Co/Zn MOF@rGO has exhibited superior electrocatalytic glucose-sensing ability with remarkable stability and selectivity. Finally, the developed sensor has been tested for quantification of glucose from real sweat samples and results were obtained with good recoveries. The rGo-Co/Zn MOF hybrid composite, developed as a highly selective and sensitive non-enzymatic electrochemical glucose sensor, holds promise for continuous metabolic monitoring in disability research, where glucose regulation critically impacts health and rehabilitation outcomes.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1303 - 1312"},"PeriodicalIF":3.0,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579250","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":"Utilizing Cobalt Nanoparticles on Graphene Oxide Enhanced with MIL-100@Co Metal-Organic Framework in PAOCl Electrolyte as an SO2-Trapping for C-H Activation Electro-Organic Synthesis of Sulfonamides","authors":"Waleed Al-Azzawi,&nbsp;Abdulrahman A. Almehizia,&nbsp;Zaman Abdalhussein Ibadi Alaridhee,&nbsp;Mohammed B. Alqaraguly,&nbsp;Amer Alhaj Zen,&nbsp;Abdulqader Faris Abdulqader,&nbsp;Mohammed S. Nawrooz,&nbsp;Waam Mohammed Taher,&nbsp;Mariem Alwan,&nbsp;Rustamkhon Kuryazov,&nbsp;Elyor Berdimurodov,&nbsp;Jalilov Fazliddin,&nbsp;Hijran Sanaan Jabbar","doi":"10.1007/s11244-025-02216-7","DOIUrl":"10.1007/s11244-025-02216-7","url":null,"abstract":"<div><p>Traditional electro-organic synthesis methods for sulfonamides often suffer from low catalytic efficiency, long reaction times, and the use of environmentally harmful reagents, limiting their practical applications and sustainability. This study explores the utilization of cobalt nanoparticles supported on GO enhanced with the MIL-100@Co MOF in a PAOCl as an electrolyte and SO₂ trapping agent for the electro-catalytic synthesis of sulfonamides <i>via</i> C-H activation reaction. The synthesized catalyst was characterized utilizing various analytical techniques, including FT-IR, BET, SEM, EDS, EDX mapping, TGA, CV, and XPS, to confirm its structural integrity and elemental composition. The catalytic performance was evaluated in terms of yield and reaction time, demonstrating an impressive 92–97%yield of sulfonamides <b>4(a-k)</b> within just 45 min at ambient temperature and atmospheric pressure, using a current of 10 mA. This performance surpasses that of traditional methods employing other cathode materials, which often suffer from low yields and prolonged reaction times. The incorporation of Co nanoparticles enhances catalytic efficiency, while PAOCl serves as both an electrolyte and SO₂ trapping agent. Additionally, the MIL-100@Co MOF provides a robust support structure with a high surface area, improving reactivity in the electrochemical environment. Overall, this work highlights the potential of MIL-100@Co MOF composites in a PAOCl as effective catalytic system for sustainable sulfonamides <b>4(a-k)</b> synthesis in electrochemical applications.</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 1-3","pages":"422 - 442"},"PeriodicalIF":3.0,"publicationDate":"2025-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983231","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":"Eco-friendly Ag–ZnO Nanocomposites Synthesis and Their Role as Photocatalyst for Textile Dye Degradation","authors":"Juhi Puthukulangara Jaison,&nbsp;Kadanthottu Sebastian Joseph","doi":"10.1007/s11244-025-02244-3","DOIUrl":"10.1007/s11244-025-02244-3","url":null,"abstract":"<div><p>Recent research in the field of nanotechnology revealed that plant extract and their derivatives are good stabilizing and reducing agents. <i>Artemisia stelleriana</i> (Dusty Miller) is widely used as an ornamental plant. The current study, explores one-pot method to synthesise <i>A. stelleriana-</i>mediated silver/ zinc oxide nanocomposites (AS-Ag/ZnONCs). Using UV-visible spectrophotometer, scanning electron microscopy, energy-dispersive X-ray, Transmission Electron Microscope, X-ray diffraction, and Fourier transform infrared spectroscopy the characterisation of the synthesised AS-Ag/ZnONCs was examined. The crystalline size of the AS-Ag/ZnONCs was determined to be 45.39 nm using the Williamson-hall equation. Irregular-shaped nanocomposites were observed from AS-Ag/ZnONCs, exhibiting an average size of 35.2 nm. To check the activity of AS-Ag/ZnONCs as photocatalysts to degrade RY145, RY86, RB222A and RB220 dyes was determined. The order of photocatalytic activity of AS-Ag/ZnONCs was as follows: RY145 &gt; RB220 &gt; RB222A &gt; RY86. Low toxicity was observed when <i>Vigna radiata</i> (Mung bean) and <i>Artemia salina</i> (Brine shrimp) were exposed to treated dye solutions using AS- Ag/ZnONCs when compared with untreated dye solutions.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2032 - 2042"},"PeriodicalIF":3.7,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695714","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":"Synthesis and Electrochemical Characterization of APS/FeCl3-PANI@NiO Nanocomposites for Supercapacitors","authors":"Sagar Kute,&nbsp;Manohar Zate,&nbsp;Munish Pandey","doi":"10.1007/s11244-025-02247-0","DOIUrl":"10.1007/s11244-025-02247-0","url":null,"abstract":"<div><p>Specific capacitance (C_s) optimization of NiO nanomaterials, particularly with conductive polymers such as polyaniline (PANI), which is synthesized using ammonium persulfate (APS) and ferric chloride (FeCl₃), has been a material of great interest for their use in electrochemical devices. The facile formation of NiO nanomaterials enhanced the electrical properties with a high density of Ni²⁺ vacancies via co-precipitation synthesis. It was found that the resulting PANI@NiO nanocomposites had considerably better thermal stability and electrical conductivity than pure NiO nanomaterials. Structural and morphological properties of the nanocomposites were analyzed through characterization techniques like UV-Vis, FTIR, BET, XRD, and FE-SEM-EDX. XRD studies demonstrated the crystallinity of NiO nanomaterials and PANI, and FE-SEM was used to investigate the uniform dispersion of NiO in polymer matrices. Cyclic voltammetry (CV) reveals that the PANI@NiO nanocomposites exhibit a highly improved specific capacitance compared to NiO nanomaterials. The composites FeCl₃-PANI@NiO show the maximum value of C_s very interestingly. The maximum C_s attained was 971.9 F/g at a scan rate of 1 mV/s. Conversely, the PANI@NiO (APS) nanocomposite exhibited a different pattern, with C_s rising at scan rates of up to 10 mV/s, reaching a peak of 817.24 F/g. This suggests outstanding charge transfer efficiency at moderate scan rates. Such exceptional performance likely arises from the synergistic benefits of PANI, which enhance surface area, boost electrical conductivity, and facilitate effective charge transport within the composite. This study shows that the PANI@NiO nanocomposites could be significant materials for high-performance supercapacitors, and the PANI synthesis route significantly influences their electrochemical characteristics.</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":"2348 - 2364"},"PeriodicalIF":3.7,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098717","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":"CaTiO3/TiO2 Nanocomposite: Easy Synthesis, Structure, Optical and Photocatalytic Activity","authors":"V. Gopika,&nbsp;P. Nivetha,&nbsp;R. Suresh,&nbsp;N. Jayaprakash,&nbsp;Thangamani Arumugam,&nbsp;Pandian Bothi Raja","doi":"10.1007/s11244-025-02235-4","DOIUrl":"10.1007/s11244-025-02235-4","url":null,"abstract":"<div><p>In this paper, a solid-state thermal decomposition method was used to synthesis calcium titanate (CaTiO₃)/titania (TiO₂) nanocomposite. Commercial TiO₂ and calcium oxalate (CaC₂O₄) were used as metal precursors. The sample was characterized by various spectroscopic and microscopic techniques. The formation of CaTiO₃/TiO₂ nanocomposite was ascertained by XRD, FTIR, XPS, FESEM and HRTEM analysis. Light harvesting capacity, band gap and luminescence features of CaTiO₃/TiO₂ nanocomposite were determined by UV-Visible and photoluminescence (PL) spectroscopies. The thermal stability of CaTiO₃/TiO₂ nanocomposite was examined by thermogravimetric-differential thermal analysis (TG-DTA). Photocatalytic activity of CaTiO₃/TiO₂ nanocomposite was assessed by using ultraviolet (UV)-induced methylene blue degradation along with hydrogen peroxide (H₂O₂) as an oxidant. The nanocomposite showed 96.5% efficiency within 120 min under UV/H₂O₂, whereas 26.3% efficiency was obtained under only ultraviolet light (without H₂O₂). The possible reactive species involved in the CaTiO₃/TiO₂-catalysed reaction was determined. The recyclability of the photocatalyst has also been tested. CaTiO₃/TiO₂ nanocomposite might have great application in water purification.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1293 - 1302"},"PeriodicalIF":3.0,"publicationDate":"2025-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579655","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":"Bio-utilization Synthesis of Fe Doped Bismuth Zirconate Mediated by Menthaspicata L. for Photocatalytic, Antibacterial and Electrochemical Applications","authors":"K. Pompapathi,&nbsp;K. S. Anantharaju,&nbsp;S. Meena,&nbsp;B. S. Surendra,&nbsp;B. Uma,&nbsp;Arpita Paul Chowdhury","doi":"10.1007/s11244-025-02219-4","DOIUrl":"10.1007/s11244-025-02219-4","url":null,"abstract":"<div><p>Synthesis and systematic characterization of BZOP: Fe (0–9 mol%) nanomaterials (NMs) was done; it is also applied in photocatalytic activity, antibacterial activity and electrochemical sensing. The composition was found to be monoclinic microstructure as shown by X-ray diffraction (XRD) with a size of crystallites lying between 30.4 and 45.8 nm depending on the concentration of Fe doping. SEM and TEM measurements demonstrated a homogeneous morphology, whereas the existence of the elements including Bi, Zr, Fe, and O was approved by EDS and XPS measurements. An examination of functional groups was done on FTIR, and optical band gap was found to reduce with further addition of Fe with a range of 2.33 to 2.09 eV using UV–Vis spectroscopy. Of all the compositions, BZOP: Fe (5 mol%) showed photo catalytic degradation efficiency of 96% and 98% in case of Methylene blue (MB) and Rhodamine B (RB) dye, respectively. There were better results in antibacterial culture, whether in Gram-negative bacteria or Gram-positive bacteria. Electrochemical analysis through cyclic voltammetry suggested pseudocapacitance with an increased specific capacitance in case of 5 mol% of Fe doping. The NMs were also showed elevated sensitivity in the detection of dextrose and Pb²⁺ ions even in low concentration as 5 mM. These findings emphasize the potential role of nanotechnology in resolving some of the major issues in the environment by identifying BZOP: Fe (5 mol%) as a multifunctional material in environmental remediation and bio sensing.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 8-11","pages":"1131 - 1151"},"PeriodicalIF":3.0,"publicationDate":"2025-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579603","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":"C-H Activation with Cu(I) MOFs: The Pertinence of Natural-Like Active Centres and Their Facile Modification","authors":"Rafael Cortez Sgroi Pupo,&nbsp;Beatrice Garetto,&nbsp;Mouhammad Abu Rasheed,&nbsp;Ning Cao,&nbsp;Bjørnar Arstad,&nbsp;Frédérique Pourpoint,&nbsp;Erlend Aunan,&nbsp;Silvia Bordiga,&nbsp;Unni Olsbye,&nbsp;Ainara Nova,&nbsp;Elisa Borfecchia,&nbsp;Petra Ágota Szilágyi","doi":"10.1007/s11244-025-02218-5","DOIUrl":"10.1007/s11244-025-02218-5","url":null,"abstract":"<div><p>The easy modulation of the first and second ligand spheres of the redox active centres in heterogenised enzyme-inspired catalysts is highly desirable for speeding up <i>de-novo</i> design and optimisation. In this study, we employ metal-organic framework (MOF) hosts, capable of emulating enzyme-like heterogenised Cu(I) active sites to study their catalytic performance. By leveraging on a post-synthetic modification (PSM) strategy, we modified the microenvironment around copper centres within the selected UiO-67 MOFs, thereby mimicking functionalities typical of enzymatic systems. In order to assess the feasibility of a facile modulation of the microenvironment around the active centre without recourse to organic chemistry approaches, our strategy also involved the incorporation of secondary guest molecules into the MOF matrix, such as phenol and propionamide. Through a thorough combined theoretical-experimental study, we demonstrate that the selected propionamide molecule coordinates to the redox-active cuprous centre, whereas phenol does not get adsorbed into the matrix. The synthesised materials were tested for a C–H activation reaction using cyclohexene as a model substrate and tert-butyl hydroperoxide (<i>t</i>BuOOH) as oxidant, under aerobic conditions. The cuprous ions coordinated to the enzyme-like motifs showed catalytic activity for cyclohexene oxidation, and in addition, showed better performance compared with its cupric counterpart. The catalytic performance of the materials modulated with propionamide however was not significantly different from the parent catalyst, on account of the swift removal of the secondary guest molecule under reaction conditions.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"68 20","pages":"2375 - 2392"},"PeriodicalIF":3.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11244-025-02218-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145675660","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":"Catalytic Reduction of Organic Pollutants and Anticancerous Activity of Eco-Friendly Synthesized ZnO Nanoparticles Using Dill Seed Extract","authors":"Guddappa Halligudra,&nbsp;Chitrabanu C. Paramesh,&nbsp;Amulya Giridasappa,&nbsp;Chetana Sabbanahalli,&nbsp;Kunal Roy,&nbsp;Madhusudhana Ramanna,&nbsp;Dinesh Rangappa,&nbsp;Prasanna Daddakunche Shivaramu","doi":"10.1007/s11244-025-02236-3","DOIUrl":"10.1007/s11244-025-02236-3","url":null,"abstract":"<div><p>In the current situation, organic dyes are the potential candidates that contribute to pollution in water, and their degradation still poses a challenging question to scientists. Materials in the Nano-sized regime are attracting focused interest as they inherit enhanced features for their efficacy, feasibility, and go-green properties, initiating the drive for the present research. The present work focuses on the synthesis of ZnO nanoparticles using dill <i>(Anethum graveolens)</i> seed extract using an eco-friendly method. The obtained nanoparticles were analyzed using XRD, FT-IR, SEM, and EDX analysis to evaluate their structure, morphology, and phase composition. ZnO nanoparticles synthesized were employed for the catalytic reduction of dyes and anticancer activity. The nanoparticles displayed better catalytic activity, achieving the complete degradation of organic dyes, namely, methylene blue, congo red, 2-chloro-4-nitrophenol, and o-nitrobenzoic acid, within 10, 6, 12, and 15 min, respectively, with a low catalyst loading of 2 mg. This resulted in rate constants of 0.260, 0.237, 0.118, and 0.061 min^-1, with reduction efficiencies of 98%, 96%, 84%, and 90%, respectively, for each of the dyes. The reduced o-aminobenzoic acid from o-nitrobenzoic acid was isolated and confirmed by ¹H NMR spectroscopy. A good recovery yield was observed for the prepared materials, which maintained their catalytic activity over 5 cycles with a minimal decrease in performance. The ZnO nanoparticles also exhibited dose-dependent antiproliferative effects on human colon cancer cells, i.e., HCT116 cells, with an IC₅₀ of 12.07 <i>±</i> 0.53 µg/mL, demonstrating significant anticancer effects.</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":"1493 - 1507"},"PeriodicalIF":3.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579316","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":"Graphene Oxide-Embedded Isotype g-C3N4/g-C3N4 Heterojunction for the Deterioration of Pharmaceutical Waste and Dyes","authors":"Karishma Behare,&nbsp;Gunvant Sonawane,&nbsp;Prakash Labhane","doi":"10.1007/s11244-025-02238-1","DOIUrl":"10.1007/s11244-025-02238-1","url":null,"abstract":"<div><p>The present study reports the development of g-C₃N₄/g-C₃N₄ isotype heterojunction embedded on graphene oxide (GO) for the photodegradation of pharmaceutical waste and organic dyes. Initially, the g-C₃N₄/g-C₃N₄ isotype heterojunction was prepared by thermal treatment using two different precursors, and subsequently embedded onto GO by a sonication-assisted solvothermal method. The successful synthesis and properties of the material were confirmed by various characterization techniques, including XRD, UV-Vis DRS, FESEM, HR-TEM XPS and BET. The strong compatibility and well-aligned band structure of the g-C₃N₄/g-C₃N₄ isotype heterojunction offers a cost-effective strategy conquer the rapid recombination of photogenerated charge pairs, which is frequently observed in pristine g-C₃N₄, a potential metal-free photocatalyst. Incorporating the g-C₃N₄/g-C₃N₄ isotype heterojunctions onto GO sheets results to the formation of a ternary photocatalyst (g-C₃N₄/g-C₃N₄@GO) with high efficiency in degradation of pharmaceutical waste and organic dyes. The superior photocatalytic efficacy of hybrid ternary g-C₃N₄/g-C₃N₄@GO nanocomposite is primarily due to its enhanced surface area and improved separation of photogenerated electron-hole pairs. The study presents comprehensive synthesis, characterization and evaluation of the photocatalytic potential of the ternary isotype heterojunction, aiming to develop a metal-free catalytic approach for environmental remediations within the broader context of sustainable development.</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 1-3","pages":"13 - 25"},"PeriodicalIF":3.0,"publicationDate":"2025-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145983054","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}