Topics in Catalysis最新文献

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Facile Synthesis and Characterization of NiS and Co-doped NiS Nanomaterials for Photocatalytic and Gas Sensing Applications 用于光催化和气体传感的NiS和共掺杂NiS纳米材料的简单合成和表征
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-06-22 DOI: 10.1007/s11244-026-02318-w
Vijaya J. Ushir, Yogeshwar R. Baste, Bhagwat K. Uphade, Jagdish N. Ghotekar, Vaishali S. Raut
{"title":"Facile Synthesis and Characterization of NiS and Co-doped NiS Nanomaterials for Photocatalytic and Gas Sensing Applications","authors":"Vijaya J. Ushir,&nbsp;Yogeshwar R. Baste,&nbsp;Bhagwat K. Uphade,&nbsp;Jagdish N. Ghotekar,&nbsp;Vaishali S. Raut","doi":"10.1007/s11244-026-02318-w","DOIUrl":"10.1007/s11244-026-02318-w","url":null,"abstract":"<div><p>In this work, we report the synthesis of pristine and cobalt-doped nickel sulfide (Co-NiS) nanomaterials (NMs) via co-precipitation for dual applications in photocatalysis and gas sensing. FTIR, XRD, SEM-EDX, and HR-TEM analyses revealed vibrational modes, high crystallinity, significant reductions in particle size and morphology, and uniform incorporation of Co into NiS. UV-DRS analysis confirmed that Co-doping narrowed the band gap of NiS from 3.2 eV to 2.9 eV and enhanced visible-light absorption. The improved electronic composition facilitated higher photocatalytic degradation of Xylidine dye to 92% under simulated sunlight, exceeding the 87% achieved with pristine NiS, with superoxide radical anion (O<sub>2</sub><sup>−</sup>) as the chief reactive species. Co-doping also significantly altered the selectivity of gas sensing. NiS exhibited a gas-sensing sensitivity of 72% toward CO<sub>2</sub> at 120 °C; however, Co-NiS demonstrated excellent selectivity for liquefied petroleum gas (LPG), responding with 77% at 60 °C, which is highly energy-efficient. This performance enhancement results from a tailored morphology and Co-based electronic structure. Overall, our findings on Co-NiS as a bifunctional NMs are promising for advanced environmental remediation and low-energy gas sensors.</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":"1942 - 1959"},"PeriodicalIF":3.7,"publicationDate":"2026-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695178","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
In-Situ Generation of Superacids for Aqueous Catalytic Cationic Polymerization: Preliminary Results for the Polymerization of Toluene and Dichloromethane Solutions of Styrene/Cs+[CHB11Cl11]− Suspended in HCl(aq) 原位生成用于水催化阳离子聚合的超强酸:苯乙烯/Cs+[CHB11Cl11]−悬浮在HCl(aq)中的甲苯和二氯甲烷溶液聚合的初步结果
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-06-15 DOI: 10.1007/s11244-026-02311-3
Stewart P. Lewis
{"title":"In-Situ Generation of Superacids for Aqueous Catalytic Cationic Polymerization: Preliminary Results for the Polymerization of Toluene and Dichloromethane Solutions of Styrene/Cs+[CHB11Cl11]− Suspended in HCl(aq)","authors":"Stewart P. Lewis","doi":"10.1007/s11244-026-02311-3","DOIUrl":"10.1007/s11244-026-02311-3","url":null,"abstract":"<div><p>In order to probe the impact that salts containing weakly coordinating anions might have on electrophilic transformations of industrial significance (e.g., Friedel-Crafts alkylation, nitration) initial studies were conducted on the aqueous cationic polymerization of an easy to handle monomer (styrene). It was hypothesized that the addition of minute quantities of a salt bearing a weakly coordinating anion may enhance the activity of traditional acid catalysts that are employed to effect such reactions. This article details preliminary results for the polymerization of a solution of this olefin, in toluene or dichloromethane, containing a small quantity of a carborane salt (i.e., Cs<sup>+</sup>[CHB<sub>11</sub>Cl<sub>11</sub>]<sup>−</sup>) as a catalyst, suspended in a continuous phase of HCl(aq). In the absence of this salt no conversion of neat styrene is obtained even when reaction is conducted in fuming hydrochloric acid at room temperature for a period of one week, whereas explosive polymerization ensues in its presence almost instantly. Likewise, the olefin is stable in the presence of the salt provided that HCl(aq) is absent. This approach is believed to generate small quantities of a hydrophobic superacid (i.e., H<sup>+</sup>[CHB<sub>11</sub>Cl<sub>11</sub>]<sup>−</sup>) via a metathetical reaction between the Brønsted acid component of the aqueous phase and the catalytic salt contained in the organic phase where the resultant strong acid then initiates polymerization of the olefin. Addition of a common salt (i.e., CsCl) was found to reduce conversion and argues in favor of the in situ generation of a superacid within the monomer droplet. These reactions produce polymers with molecular weights showing expected dependencies on solvent polarity, chain end functionalities, and Arrhenius plots of <span>({overline {{text{M}}} _{text{w}}})</span>, that are consistent with a cationic mechanism. In the presence of toluene polymerization was found to have two stages, a fast initial reaction followed by a slower second phase. The latter stage was determined to be first order with respect to the monomer. Since the strong acid is continuously regenerated in situ these polymerizations are catalytic and indefinitely active in nature.</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 13-14","pages":"1886 - 1897"},"PeriodicalIF":3.7,"publicationDate":"2026-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386053","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
Natural Sunlight Driven Degradation of Crystal Violet Using α-Fe2O3/MXene Nanocomposite Photocatalyst α-Fe2O3/MXene纳米复合光催化剂在自然光驱动下降解结晶紫
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-06-02 DOI: 10.1007/s11244-026-02312-2
Anjali Badola, Surla Manikanta Prasad, Bibekananda Bhoi, Jayeshkumar Prajapati, Priyanjana Roy, Vimlesh Chandra
{"title":"Natural Sunlight Driven Degradation of Crystal Violet Using α-Fe2O3/MXene Nanocomposite Photocatalyst","authors":"Anjali Badola,&nbsp;Surla Manikanta Prasad,&nbsp;Bibekananda Bhoi,&nbsp;Jayeshkumar Prajapati,&nbsp;Priyanjana Roy,&nbsp;Vimlesh Chandra","doi":"10.1007/s11244-026-02312-2","DOIUrl":"10.1007/s11244-026-02312-2","url":null,"abstract":"<div><p>Crystal violet (CV) is a widely used synthetic dye known for its high environmental toxicity and persistence in aquatic systems, highlighting the need for efficient removal strategies. In this study, a hematite (α-Fe<sub>2</sub>O<sub>3</sub>) nanorod–decorated two-dimensional MXene (Ti<sub>3</sub>C<sub>2</sub>) sheet nanocomposite was successfully synthesized and evaluated for its photocatalytic degradation performance toward CV dye under natural sunlight. The prepared nanocomposites were comprehensively characterized using structural (XRD, FTIR, XPS), optical, morphological (FESEM, TEM), and electrochemical techniques. FTIR analysis confirmed the presence of functional groups such as C=O, C–O, C–F, and O–H on the MXene surface, indicating successful surface modification. High-resolution TEM images revealed clear lattice fringes with an interplanar spacing of 0.242 nm, corresponding to the (104) crystallographic plane of α-Fe<sub>2</sub>O<sub>3</sub>, confirming the effective decoration of MXene sheets with hematite nanorods. The influence of various operational parameters, including photocatalyst composition, catalyst dosage, reaction kinetics, solution pH, radical scavengers, and coexisting ions, was systematically investigated. Under optimized conditions, the nanocomposite achieved a remarkably high degradation efficiency of 98% within 60 min. Reusability tests further confirmed the nanocomposite’s excellent stability, retaining high performance even after five successive cycles. Kinetic analysis indicated a pseudo-first-order with rate constants 0.0187 min<sup>− 1</sup> and 0.0441 min<sup>− 1</sup> for α-Fe<sub>2</sub>O<sub>3</sub> and α-Fe<sub>2</sub>O<sub>3</sub>/MXene nanocomposite. Overall, the α-Fe<sub>2</sub>O<sub>3</sub>/MXene nanocomposite exhibits strong potential as an efficient, stable, and sunlight-driven photocatalyst for the removal of toxic crystal violet dye from wastewater. Synthesis of α-Fe<sub>2</sub>O<sub>3</sub> nanorod–decorated two-dimensional Ti<sub>3</sub>C<sub>2</sub> sheet nanocomposite for Crystal Violet degradation.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div><p>Synthesis of α-Fe<sub>2</sub>O<sub>3</sub> nanorod–decorated two-dimensional Ti<sub>3</sub>C<sub>2</sub> sheet nanocomposite for Crystal Violet degradation.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"1899 - 1914"},"PeriodicalIF":3.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695386","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
In-situ Fabrication of Lanthanides Decorated Porous Graphitic Carbon Nitride Nanosheets for Visible light Assisted Photocatalytic Breakdown of Refractory Pollutant 可见光辅助光催化降解难降解污染物用镧系修饰多孔石墨氮化碳纳米片的原位制备
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-06-02 DOI: 10.1007/s11244-026-02310-4
Chinnu R. Thara, Beena Mathew
{"title":"In-situ Fabrication of Lanthanides Decorated Porous Graphitic Carbon Nitride Nanosheets for Visible light Assisted Photocatalytic Breakdown of Refractory Pollutant","authors":"Chinnu R. Thara,&nbsp;Beena Mathew","doi":"10.1007/s11244-026-02310-4","DOIUrl":"10.1007/s11244-026-02310-4","url":null,"abstract":"<div><p>Antibiotics are a significant developing contaminant due to improper disposal in sewage and industrial effluent and their indiscriminate usage. These contaminants cannot be effectively treated in wastewater treatment facilities using the currently available methods. One of the most significant technologies, photocatalysis, is valuable in many environmental applications, including wastewater remediation. The advantages of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) nanosheets over bulk g-C<sub>3</sub>N<sub>4</sub> include more active sites with increased specific surface area, faster mobility, and separation of the photogenerated electron-hole pairs. Upconversion (UC) particles doped with lanthanides have recently been used in research to see if it is possible to boost the utilization of NIR light for photocatalysis. Lanthanides are an excellent choice for producing effective photon UC due to the rich energy level pattern that results from their split 4f electronic structures by electronic repulsion and spin-orbit coupling. The current work details the quick synthesis of porous g-C<sub>3</sub>N<sub>4</sub> nanosheets doped with three different concentrations of each of the four lanthanides, including La, Eu, Tb, and Sm. Levofloxacin, a fluoroquinolone antibiotic, was photocatalytically degraded using these nanomaterials. The materials had nearly identical photocatalytic activity, with the best degradation efficiency being 100% levofloxacin elimination in 120 min.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"1960 - 1971"},"PeriodicalIF":3.7,"publicationDate":"2026-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695384","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
Special Issue Based on the 1st Edition of International Conference on Catalysis and Reaction Engineering 基于第1版国际催化与反应工程会议的特刊
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-05-22 DOI: 10.1007/s11244-026-02298-x
Mannar R. Maurya, V. S. R. Rajasekhar Pullabhotla
{"title":"Special Issue Based on the 1st Edition of International Conference on Catalysis and Reaction Engineering","authors":"Mannar R. Maurya,&nbsp;V. S. R. Rajasekhar Pullabhotla","doi":"10.1007/s11244-026-02298-x","DOIUrl":"10.1007/s11244-026-02298-x","url":null,"abstract":"","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 13-14","pages":"1771 - 1771"},"PeriodicalIF":3.7,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386046","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 Hydrothermal Synthesis of ZnSe/NiFe2O4 Nanocomposite: Kinetic and Mechanistic Insights into Methylene Blue Degradation 水热合成ZnSe/NiFe2O4纳米复合材料:亚甲基蓝降解动力学和机理研究
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-05-19 DOI: 10.1007/s11244-026-02292-3
Ruhit Kumar Paul, Akbar Hussain, Pranjit Borah, Md. Ahmaruzzaman
{"title":"Facile Hydrothermal Synthesis of ZnSe/NiFe2O4 Nanocomposite: Kinetic and Mechanistic Insights into Methylene Blue Degradation","authors":"Ruhit Kumar Paul,&nbsp;Akbar Hussain,&nbsp;Pranjit Borah,&nbsp;Md. Ahmaruzzaman","doi":"10.1007/s11244-026-02292-3","DOIUrl":"10.1007/s11244-026-02292-3","url":null,"abstract":"<div><p>This work demonstrates the fabrication of a novel composite ZnSe/NiFe<sub>2</sub>O<sub>4</sub> through a facile hydrothermal route, followed by its application as a photocatalyst for the efficient sunlight-assisted degradation of Methylene Blue (MB) dye. SEM analysis of the composite revealed considerable particle agglomeration, while TEM analysis indicated rectangular and cubic nanoparticles with an average size of 17.5 nm, and the corresponding SAED pattern confirmed the polycrystalline structure of the composite. EDX analysis verified the presence of all the elements within the ZnSe/NiFe<sub>2</sub>O<sub>4</sub> composite, which was further confirmed by the XPS studies. Tauc plot analysis revealed a direct band gap of 1.69 eV for the composite. Further, VSM analysis revaled that the ZnSe/NiFe<sub>2</sub>O<sub>4</sub> nanocomposite exhibits a saturation magnetization (Ms) of 12.63 emu g<sup>− 1</sup>, a coercive field (Hc) of 141.99 Oe, and a remanent magnetization (Mr) of 2.44 emu g<sup>− 1</sup>. Additionally, it was found that the modification of the band gap and reduction in charge recombination result in the enhanced visible-light activity of the ZnSe/NiFe<sub>2</sub>O<sub>4</sub> composite (reduced PL emission and increased MB dye degradation efficiency of 93% as compared to the pure ZnSe which showed 54.6% of degradation efficiency). Also, the composite has a good magnetic recoverability and operational stability with 87% of degradation efficiency remaining after four reuse cycles, showing a low level of deactivation and good structural integrity. The improved photocatalytic performance, the high efficiency of charge separation, magnetic separation, and long-term reusability of the ZnSe/NiFe<sub>2</sub>O<sub>4</sub> system are the features that demonstrate the high practical importance and novelty of ZnSe/NiFe<sub>2</sub>O<sub>4</sub> in contrast to traditional single-component photocatalysts. Further, kinetic studies revealed that the degradation followed pseudo-first-order kinetics with a rate constant of 0.02053 min<sup>− 1</sup>. The underlying photocatalytic mechanism was also investigated through VB-XPS analysis, Tauc plot analysis, and scavenger studies. Additionally, LC-MS analysis confirmed that the ZnSe/NiFe<sub>2</sub>O<sub>4</sub> composite effectively degrades the MB dye rather than simple decolorization.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"1915 - 1941"},"PeriodicalIF":3.7,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695232","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
Synergistic Interface Nanoarchitectonics in InP-NBOC/Mo-CN Ternary Composites for Efficient Photocatalytic NO Oxidation with Ultralow NO2 Byproduct Generation InP-NBOC/Mo-CN三元复合材料的协同界面纳米结构与超低NO2副产物的高效光催化氧化
IF 3.7 3区 化学
Topics in Catalysis Pub Date : 2026-04-17 DOI: 10.1007/s11244-026-02273-6
Jundao Wu, Zeai Huang, Fan Zhang, Jiayi Liu, Yi He, Wei Hu, Xiao Tang, Rustem Zairov, Oleg G. Sinyashin
{"title":"Synergistic Interface Nanoarchitectonics in InP-NBOC/Mo-CN Ternary Composites for Efficient Photocatalytic NO Oxidation with Ultralow NO2 Byproduct Generation","authors":"Jundao Wu,&nbsp;Zeai Huang,&nbsp;Fan Zhang,&nbsp;Jiayi Liu,&nbsp;Yi He,&nbsp;Wei Hu,&nbsp;Xiao Tang,&nbsp;Rustem Zairov,&nbsp;Oleg G. Sinyashin","doi":"10.1007/s11244-026-02273-6","DOIUrl":"10.1007/s11244-026-02273-6","url":null,"abstract":"<div><p>The substantial presence of nitrogen oxides (NO and NO<sub>2</sub>) in outdoor environments detrimentally impacts natural ecosystems and exerts significant influence on urban climates. Conventional NO<sub>x</sub> treatment methods frequently suffer from challenges such as harsh reaction conditions and high energy consumption. Consequently, the development of advanced photocatalytic systems to efficiently degrade NO<sub>x</sub> while minimizing the formation of toxic byproducts represents a critical challenge in environmental catalysis. In this study, a novel ternary composite material (5% Mo-CN/InP-NBOC) was constructed via hydrothermal synthesis and surface modification strategies, achieving 42% NO oxidation efficiency under visible light irradiation with a mere 0.9% NO<sub>2</sub> generation rate. This performance demonstrates efficient photocatalytic NO oxidation while effectively suppressing NO<sub>2</sub> production. Systematic characterization techniques, including XRD, TEM, and XPS, confirmed the successful integration of InP quantum dots (5–10 nm) and amorphous Mo-CN onto NBOC nanosheets, forming an intimate heterojunction structure. PL and ESR analyses revealed that Mo-CN enhances charge carrier separation and governs the NO oxidation process through the activation of dual free radical pathways (⋅O<sub>2</sub><sup>−</sup> and ⋅OH). This work establishes a “quantum dot-primary catalyst-cocatalyst” ternary collaborative design paradigm, providing experimental evidence and theoretical models to address the challenges of synergistic optimization among activity, selectivity, and stability in photocatalytic NO<sub>x</sub> treatment.</p></div>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"69 15-16","pages":"2192 - 2203"},"PeriodicalIF":3.7,"publicationDate":"2026-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695590","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
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,&nbsp;Asha Radhakrishnan,&nbsp;A. Fathima Beevi,&nbsp;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
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,&nbsp;Kumar Aravindraj,&nbsp;Selvaraj Mohana Roopan,&nbsp;Arunagiri Sharmila,&nbsp;Chinnadurai Immanuel Selvaraj,&nbsp;Sankar Hari Prakash,&nbsp;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
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