Topics in Catalysis最新文献_第9页

Carbon Nanofibre Modified Platinum Nanomaterials: Synthesis, Characterization and Their Applications toward C1 to C3 Alcohols for Direct Alcohol Fuel Cells 碳纳米纤维修饰的铂纳米材料：合成、表征及其在直接醇燃料电池中对 C1 至 C3 醇的应用

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-10 DOI: 10.1007/s11244-024-01905-z

Rozhin Darabi, Fatemeh Karimi, Ramazan Bayat, Muhammed Bekmezci, Somaye Cheraghi, Fatih Sen

{"title":"Carbon Nanofibre Modified Platinum Nanomaterials: Synthesis, Characterization and Their Applications toward C1 to C3 Alcohols for Direct Alcohol Fuel Cells","authors":"Rozhin Darabi, Fatemeh Karimi, Ramazan Bayat, Muhammed Bekmezci, Somaye Cheraghi, Fatih Sen","doi":"10.1007/s11244-024-01905-z","DOIUrl":"https://doi.org/10.1007/s11244-024-01905-z","url":null,"abstract":"Innovations in fuel cells bring important developments in obtaining energy. Especially with the anodic reactions of fuel cells and the catalysts used in the anodic part, it provides an increase in energy efficiency. With this study, modification of durable and high catalytic activity targeted carbon nanofibers (CNFs) with Platinum nanostructures (CNF@Pt) developed for alcohol oxidation was provided. Further, CNF@Pt was characterized by Transmission Electron Microscopy (TEM) and X-ray Diffraction (XRD). According to Debye Scherrer, the crystalline particle size was approximately 2.27 nm, and the CNF diameter was measured as 161.57 nm according to the TEM results. Besides, the anodic reactions of methanol, ethanol, and 2-Propanol for direct alcohol fuel cells (DAFC) were investigated. Cyclic Voltammetry (CV), Chronoamperimetry (CA), and recycling performance tests were demonstrated in ideal operating rates of the catalyst. One of the highest anodic peak currents were measured as 145.43, 101.56, and 34.54 mA.cm− 2 for methanol, ethanol, and 2-propanol at a scanning speed of 50 mV/s, respectively. The CNF@Pt catalyst was also very stable and durable in stability tests. In this study, it has been seen that carbon-based fiber materials are an ideal catalyst to increase efficiency in fuel cells and to make sense of the results obtained in their use in different alcohol types.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"72 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139408037","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 La2O3-SiO2 Nanocomposite and Investigation it’s Photocatalytic Performance for Degradation of Toluidine Blue Dye 制备 La2O3-SiO2 纳米复合材料并研究其降解甲苯胺蓝染料的光催化性能

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-09 DOI: 10.1007/s11244-024-01906-y

引用次数: 0

Development of Catalytically Functionalized Polyester-Based Filters Produced by Flame Spray Pyrolysis 利用火焰喷射热解技术开发催化功能化聚酯过滤器

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-06 DOI: 10.1007/s11244-023-01892-7

D. Bissinger, J. H. Honerkamp, J. Roldan, J. Bremes, K. Kannen, M. K. Lake, A. Roppertz

{"title":"Development of Catalytically Functionalized Polyester-Based Filters Produced by Flame Spray Pyrolysis","authors":"D. Bissinger, J. H. Honerkamp, J. Roldan, J. Bremes, K. Kannen, M. K. Lake, A. Roppertz","doi":"10.1007/s11244-023-01892-7","DOIUrl":"https://doi.org/10.1007/s11244-023-01892-7","url":null,"abstract":"For industrial processes—like waste incineration—it is necessary to reduce solid components (like dust or fly ash) as well as gaseous components (like dioxins, CO and other harmful hydrocarbons) to fulfill legal requirements. Therefore, catalytically functionalized filters based on polymers already exist. However, it is known that such filters are always constructed in multiple layers to prevent the migration of catalyst particles. This study demonstrates that it is possible to prepare a stable catalytic functionalized single-layer filter based on polyester needle felt by using flame spray pyrolysis. The catalyst is a low temperature active Pt/TiO2 with a loading weight of 38 g/l on the filter. Via SEM images the uniform distribution of the catalytic particles even in the deeper regions of the single-layer filter was proven. The structure was confirmed after experiments under realistic conditions—migration could not be obtained. Likewise, it was obtained that the oxidative conversion of carbon monoxide (CO) to carbon dioxide (CO2) is completely even at temperatures below 100 °C. Furthermore, comparative studies with catalysts on a honeycomb and a ceramic foam have shown that the conversion on the polyester needle felt textile catalyst is comparable.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"1 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376184","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

Biomimicking Activity Resembling Phenoxazinone Synthase of Heterogenized Oxidovanadium(V) and Its Analogous Homogeneous Complex 异质化氧化钒(V)及其同质类似物的仿生活性类似于苯并噁嗪酮合成酶

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-06 DOI: 10.1007/s11244-023-01895-4

Mannar R. Maurya, Akhil Patter, Shailendra K. Maurya

{"title":"Biomimicking Activity Resembling Phenoxazinone Synthase of Heterogenized Oxidovanadium(V) and Its Analogous Homogeneous Complex","authors":"Mannar R. Maurya, Akhil Patter, Shailendra K. Maurya","doi":"10.1007/s11244-023-01895-4","DOIUrl":"https://doi.org/10.1007/s11244-023-01895-4","url":null,"abstract":"Oxidovanadium(V) complex [VVO{Hen(3,5-dcp)4}] (where H4en(3,5-dcp)4, is a Mannich base synthesized from ethylenediamine, paraformaldehyde and 2,4-dichlorophenol) has been anchored onto chloromethylated polystyrene (PS–Cl) cross-linked with divinylbenzene to obtain [VVO{en(3,5-dcp)4}]@PS (@ refers to anchoring of complex onto polymer), a heterogeneous compound. Both of the synthesized (homogeneous as well as heterogeneous) vanadium compounds, after characterization, have been explored as biomimicking model catalysts for the type II copper site in phenoxazinone synthase. These compounds catalyze the oxidative condensation of o-aminophenol (OAP) into 2-aminophenoxazine-3-one (APX) by utilizing aqueous hydrogen peroxide in acetonitrile. Various reaction conditions like amounts of catalyst and oxidant, and temperature have been optimized to obtain maximum yield of APX. The polymer-immobilized complex demonstrates excellent catalytic activity, giving 96% yield of 2-aminophenoxazine-3-one under the optimized reaction conditions selectively. Its homogeneous analogue i.e. [VVO{Hen(3,5-dcp)4}], is also active and exhibits 83% yield. The heterogeneous catalyst i.e. [VVO{en(3,5-dcp)4}]@PS is stable, recyclable and reusable.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"26 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139375948","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

Synthesis of Polyhedral Zirconia Nanoparticles for The Photocatalytic Degradation of Anionic Congo Red Dye Under Visible Light Irradiation 在可见光照射下合成用于光催化降解阴离子刚果红染料的多面体氧化锆纳米粒子

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-06 DOI: 10.1007/s11244-023-01897-2

{"title":"Synthesis of Polyhedral Zirconia Nanoparticles for The Photocatalytic Degradation of Anionic Congo Red Dye Under Visible Light Irradiation","authors":"","doi":"10.1007/s11244-023-01897-2","DOIUrl":"https://doi.org/10.1007/s11244-023-01897-2","url":null,"abstract":"<h3>Abstract</h3> In this study, mixed phase (tetragonal and monoclinic) Zirconia nanoparticles (ZrO2 NPs) namely, ZS3, ZS7 and ZS10 were synthesized via hydrothermal method at different pH values of (3, 7, 10) respectively. A combination of Powder X-ray diffraction (PXRD), High Resolution Transmission Electron Microscopy (HRTEM), and Selected Area Electron Diffraction (SAED) characterization techniques confirmed the formation of mixed phase ZrO2 nanoparticles. The photocatalytic behavior of synthesized ZrO2 NPs was examined for the degradation of anionic Congo Red (CR) Dye under visible light irradiation. A systematic study of the efficiency of the prepared ZS3, ZS7 and ZS10 nanoparticles was compared and it was found that ZS7 outperformed the ZS3 and ZS10 materials, having removal efficiency of up to 98.9% with 0.1 g of the prepared ZS7 nanoparticles for 75 ppm of Congo Red (CR) dye. Furthermore, the surface area analysis revealed that among the prepared materials, ZS7 exhibited the highest surface area, thereby corroborating the finding of its superior catalytic efficiency. Under the optimized experimental conditions, the degradation of dye followed first-order kinetics. ZS7 showed the highest removal efficiency in just 60 min of contact time for all the CR dye concentrations ranging from 50 to 100 ppm, making it a superior catalyst for the efficient removal of the targeted Congo Red dye.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"52 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139376157","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

Boosting Degradation of Synthetic Dye and Pesticide Residues in Water Using NCDs/FeNH2BDC Photocatalysts 利用 NCDs/FeNH2BDC 光催化剂促进水中合成染料和农药残留的降解

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-05 DOI: 10.1007/s11244-023-01900-w

{"title":"Boosting Degradation of Synthetic Dye and Pesticide Residues in Water Using NCDs/FeNH2BDC Photocatalysts","authors":"","doi":"10.1007/s11244-023-01900-w","DOIUrl":"https://doi.org/10.1007/s11244-023-01900-w","url":null,"abstract":"<h3>Abstract</h3> The presence of contaminants, such as synthetic dyes and herbicides, in water has led to serious environmental and human health problems worldwide. Therefore, the effective removal of pollutants from aquatic environments has attracted considerable attention. The combination of metal-organic frameworks and advanced carbon materials has attracted great attention in many application fields because the hybrid material has many positive properties from both components. In this paper, NCDs/FeNH2BDC composite was fabricated through in situ synthesis, in which N-containing carbon dots (NCDs) were mixed with MOF precursor solution in different ratios before undergoing the cooling step. It has been demonstrated that introducing a certain amount of N-containing carbon dots affects the characteristic features and improves the photocatalytic performance of the final product. The optimal doping content of N-containing carbon dots in the NCD/FeNH2BDC composite was determined to be 400 mg. SEM images show that S400 appears as hexagonal micro-axial crystals with an average size of 500 nm. In addition, the S400 catalyst also exhibits excellent photocatalytic activity for the degradation of Rhodamine B at a pH range of 3 to 5. Under optimal conditions, Rhodamine B is achieved within 60 min and the yield Removal reached nearly 100% after 5 cycles. Finally, the efficiency of S400 in treating the active ingredient pretilachlor in pesticides in water is up to 93.08%.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"3 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139105145","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

Arsenic and Environment: A Systematic Review on Arsenic Sources, Uptake Mechanism in Plants, Health Hazards and Remediation Strategies 砷与环境：关于砷来源、植物吸收机制、健康危害和补救策略的系统综述

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-02 DOI: 10.1007/s11244-023-01901-9

Sasireka Rajendran, Vinoth Rathinam, Abhishek Sharma, Sugumari Vallinayagam, Madheswaran Muthusamy

{"title":"Arsenic and Environment: A Systematic Review on Arsenic Sources, Uptake Mechanism in Plants, Health Hazards and Remediation Strategies","authors":"Sasireka Rajendran, Vinoth Rathinam, Abhishek Sharma, Sugumari Vallinayagam, Madheswaran Muthusamy","doi":"10.1007/s11244-023-01901-9","DOIUrl":"https://doi.org/10.1007/s11244-023-01901-9","url":null,"abstract":"Arsenic, a metalloid that exists by nature, reaches the earth either by natural or anthropogenic events and is considered an emerging pollutant. The existence of arsenic in soil systems is a fate to the environment since it is mobile and being transported to other systems because of its bioavailability and speciation process. Arsenic transformation in the soil and its thorough understanding of how it enters plant systems are crucial. Notably, transporters are responsible for most of the arsenic that enters the plant system. Consumption of crops or animals and drinking water polluted with arsenic are the prime factors in transmitting arsenic to people. Severe adverse effects on humans arise as an outcome of long-term contact with arsenic-rich foodstuff and water. An effort has been made to outline the several sources and their dynamics in the surroundings and health impact on humans in this review. In addition, various strategies have been practiced to remove arsenic in the soil and water systems is also addressed.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"81 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139080299","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

Recent Development and Future Aspects: Nano-Based Drug Delivery System in Cancer Therapy 最新发展与未来展望：癌症治疗中的纳米给药系统

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2024-01-02 DOI: 10.1007/s11244-023-01893-6

Sasireka Rajendran, Sai Nandhini Ravi, Vaishnavi M. Nair, R. Pooja Sree, Azhagu Saravana Babu Packirisamy, Jeyanthi Palanivelu

{"title":"Recent Development and Future Aspects: Nano-Based Drug Delivery System in Cancer Therapy","authors":"Sasireka Rajendran, Sai Nandhini Ravi, Vaishnavi M. Nair, R. Pooja Sree, Azhagu Saravana Babu Packirisamy, Jeyanthi Palanivelu","doi":"10.1007/s11244-023-01893-6","DOIUrl":"https://doi.org/10.1007/s11244-023-01893-6","url":null,"abstract":"The rapid advancement of nanotechnology in the production of nanomedicine agents holds enormous promise for improving cancer therapy techniques. Nanomedicine products offer the possibility of developing complex targeting approaches as well as multifunctionality. Nanotechnology has been examined for the detection of extracellular cancer biomarkers and cancer cells, as well as in vivo imaging, sensitive and selective, accuracy, and multiplexed detection capacity. In fact, nanoparticles have the potential to not only address the limitations of traditional cancer diagnosis and treatment, but also to open up entirely new possibilities and develop cutting-edge technology for tumour detection and treatment. Nano carriers are used to increase target tumour cell specificity and delivery capability to the tumour site, enhancing therapy efficacy while reducing unwanted side effects. Nanocarriers that respond to exogenous or endogenous stimuli have emerged as a promising alternative to target drug delivery. In this review intervention of nanoparticle system for cancer types like Lung cancer, Breast cancer, Melanoma, Colorectal cancer, Bladder cancer are discussed. Further focused on the advancement of nanocarriers for cancer diagnosis and treatment. The critical review takes deeper insight on nanocarrier-based cancer therapy.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"23 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139080125","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

Kinetic and Thermodynamic Studies of Transesterification Catalysed by Black Pepper Seed-Potassium Hydroxide Catalyst 黑胡椒籽-氢氧化钾催化剂催化酯交换反应的动力学和热力学研究

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2023-12-27 DOI: 10.1007/s11244-023-01891-8

Yao Zu Tan, Yie Hua Tan, Jibrail Kansedo, N. M. Mubarak, Bridgid Lai Fui Chin, Rama Rao Karri, Mohd Lokman Ibrahim, Peter Nai Yuh Yek

{"title":"Kinetic and Thermodynamic Studies of Transesterification Catalysed by Black Pepper Seed-Potassium Hydroxide Catalyst","authors":"Yao Zu Tan, Yie Hua Tan, Jibrail Kansedo, N. M. Mubarak, Bridgid Lai Fui Chin, Rama Rao Karri, Mohd Lokman Ibrahim, Peter Nai Yuh Yek","doi":"10.1007/s11244-023-01891-8","DOIUrl":"https://doi.org/10.1007/s11244-023-01891-8","url":null,"abstract":"This study proposed biodiesel production from refined, bleached, and deodorised palm oil via transesterification using black pepper seed-KOH catalyst. A heterogeneous industrial waste catalyst, notably black pepper seed-KOH, was proposed because it can offer sustainability in biodiesel production. While among first generation oil feedstocks, palm oil stands out due to its high productivity because more palm oil can be generated per land area than others. Despite the most common use of the pseudo-first-order kinetic model in biodiesel studies, limited attention has been given to the second-order and reversible kinetics studies. Therefore, catalyst characterization encompassed SEM, EDX, TGA, PSA, FTIR, and basicity tests were first performed. Then, transesterification was executed at different temperatures (50–70 °C), 240-minute reaction time, 6:1 methanol-to-oil ratio, 5 wt% catalyst loading, and 200 rpm to obtain the best fit kinetic model and thermodynamic data. The results displayed a pseudo-irreversible first-order kinetics. Activation energy and pre-exponential factor were determined as 61.5195 kJ mol−1 and 1.1367 × 107 min−1. While, thermodynamic value was calculated, ΔH = 58.7528 kJ mol−1, ΔS = − 0.0850 kJ mol−1 K−1 and ΔG = 86.2157 to 87.9162 kJ mol−1. Therefore, the transesterification was defined as an endothermic, endogenic, and non-spontaneous reaction. This study demonstrates the black pepper seed-KOH’s efficacy in biodiesel production and enhances understanding of kinetic and thermodynamic parameters governing the transesterification process.","PeriodicalId":801,"journal":{"name":"Topics in Catalysis","volume":"312 1","pages":""},"PeriodicalIF":3.6,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139051519","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

Synthesis of Silver Nanoparticles by Biogenic Methods: Characterization and Development of a Sensor Sensible to Pharmaceutical Medicine Paracetamol 用生物方法合成纳米银颗粒：药物扑热息痛传感器的表征与开发

IF 3.6 3区化学

Topics in Catalysis Pub Date : 2023-12-09 DOI: 10.1007/s11244-023-01887-4

Fatemeh Karimi, Elif Esra Altuner, Aysenur Aygun, Ramazan Bayat, Saravanan Rajendran, Fatih Sen

引用次数: 0