ChemNanoMat最新文献_第6页

Enhanced Low-Temperature Photothermal Combustion of C3H8 Using Surface-Engineered Co3O4 Nanocatalysts 利用表面工程Co3O4纳米催化剂增强C3H8的低温光热燃烧

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-18 DOI: 10.1002/cnma.202400674

Yajun Wang, Jianheng Xu, Xinyu Han, Zeshu Zhang, Prof. Xiangguang Yang, Prof. Yibo Zhang

{"title":"Enhanced Low-Temperature Photothermal Combustion of C3H8 Using Surface-Engineered Co3O4 Nanocatalysts","authors":"Yajun Wang, Jianheng Xu, Xinyu Han, Zeshu Zhang, Prof. Xiangguang Yang, Prof. Yibo Zhang","doi":"10.1002/cnma.202400674","DOIUrl":"https://doi.org/10.1002/cnma.202400674","url":null,"abstract":"Propane (C3H8), a challenging volatile organic compound (VOC), faces limitations in catalytic combustion due to high ignition temperatures and catalyst deactivation. Photothermal catalytic combustion for C3H8, an innovative catalysis approach, significantly improves the low-temperature purification efficiency of catalysts but is limited by the band structure. This study addresses these issues by developing a photothermal Co3O4-HT catalyst through hydrothermal synthesis, achieving breakthrough low-temperature oxidation performance (T50 <160 °C) under illumination. Key mechanistic insights reveal that the narrow bandgap and enhanced surface photocurrent of Co3O4-HT facilitate efficient charge separation, while light irradiation synergistically accelerates lattice oxygen release via the Mars-van Krevelen (MvK) mechanism and promotes gas-phase oxygen activation. Crucially, photogenerated active oxygen species strengthen C3H8 adsorption and rapidly degrade carboxylate/carbonyl intermediates, overcoming conventional kinetic limitations. This work establishes a dual-functional catalytic strategy that integrates photonic energy utilization with thermal activation, providing a universal framework for designing high-efficiency VOC oxidation systems. The demonstrated synergy between band gap engineering and reaction pathway optimization opens new avenues for sustainable air pollution control technologies.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 4","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Front Cover: Enhancing Epoxy Composites with Graphene and Graphene Oxide: Thermal and Mechanical Insights (ChemNanoMat 2/2025) 封面：增强环氧复合材料与石墨烯和氧化石墨烯：热和机械的见解（ChemNanoMat 2/2025）

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-14 DOI: 10.1002/cnma.202580201

Sławomir Wilczewski, Zdzisław Nowak, Michał Maj, Magdalena Osial, PhD Roman Minikayev, Michael Giersig

引用次数: 0

Optimization of Etching Time, Temperature of Metal Salts in Surface-texturized Silicon Fabricated Through One-Step Metal-Assisted Chemical Etching 一步金属辅助化学蚀刻制备表面织构化硅金属盐的蚀刻时间和温度优化

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-13 DOI: 10.1002/cnma.202400461

A. A. Khairul Azri, S. F. Wan Muhamad Hatta, Y. Abdul Wahab, P. J. Ker, S. Mekhilef, M. A. Islam

{"title":"Optimization of Etching Time, Temperature of Metal Salts in Surface-texturized Silicon Fabricated Through One-Step Metal-Assisted Chemical Etching","authors":"A. A. Khairul Azri, S. F. Wan Muhamad Hatta, Y. Abdul Wahab, P. J. Ker, S. Mekhilef, M. A. Islam","doi":"10.1002/cnma.202400461","DOIUrl":"https://doi.org/10.1002/cnma.202400461","url":null,"abstract":"This study delves into the Metal-Assisted Chemical Etching (MACE) of p-type monocrystalline silicon wafers, with a focus on tailoring surface morphology for heightened performance as thermal absorbers. Employing diverse metal catalysts—specifically, nickel nitrate hexahydrate and silver nitrate salts—the investigation systematically explores the impact of catalyst type, etching time and temperature on nanostructure formation. One of the objectives was to maintain the etching temperature to be as low as possible through the application of the metal catalysts. Achieving >2 of thermal energy absorbance in the UV-Vis-NIR range required immersing samples in a nickel nitrate salt solution at room temperature for 60 minutes. Characterization through UV-Vis-NIR spectroscopy revealed reflectance and absorbance spectra, with silver nitrate salt-etched samples demonstrating exceptional performance, achieving the lowest reflectance values within the critical wavelength range of 300–1800 nm. Notably, after 60 minutes of etching, silver nitrate salt-etched samples produced reflectance values ranging from 0.19 % to 3.45 %. Optimized parameters for nickel nitrate salt-etched samples were identified at 30 minutes of etching and 50 °C, showcasing an average reflectance of 1.54 %. The consideration of energy conservation was paramount, prompting the initial observation of each catalyst's performance during the etching process with no heating at room temperature. Subsequently, in the extended phase of the study, the etching temperature was gradually increased. Raising the etching temperature served as a method of varying the process parameter to observe its impact on the formation of surface nanostructures and absorbing performance. The study concludes with recommendations for future research, advocating for the exploration of additional metal catalysts and investigation of combined catalysts.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Elucidation of the Critical Role of HLB Value in Microemulsions Formulation HLB值在微乳配方中的关键作用

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-13 DOI: 10.1002/cnma.202400554

Mingjun Tang, Wenjing Ma, Wenqian Sheng, Wenjun Yan, Min Ling

{"title":"The Elucidation of the Critical Role of HLB Value in Microemulsions Formulation","authors":"Mingjun Tang, Wenjing Ma, Wenqian Sheng, Wenjun Yan, Min Ling","doi":"10.1002/cnma.202400554","DOIUrl":"https://doi.org/10.1002/cnma.202400554","url":null,"abstract":"Microemulsions are extensively utilized in food, pharmaceuticals, and cosmetics due to their superior solubilizing capacity and protective capabilities. However, a longstanding critical issue with microemulsions is the quantitative relationship between the HLB value and the physicochemical properties. Herein, to quantify the effect of the HLB value on microemulsions, Juniperus chinensis Roxb. essential oil (CEO) microemulsions were fabricated. It is certified that HLB values between 8.5 and 11.5 correspond to the smallest biphasic regions, while values between 9.5 and 13.5 correspond to the largest monophasic regions. Besides, the phase evolution from lamellar structures to microemulsions was monitored by the Small-Angle X-ray Scattering (SAXS) patterns. The physicochemical properties of the resulting emulsions, e. g., polydispersity indices (PDI), zeta potential, thermal stability, viscosity, and conductivity, were also investigated. The quantification of the effect of the HLB value on the formation of microemulsions will provide significant quantitative and theoretical guidance to researchers and industry professionals.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144171399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Super Resolved Structural Imaging of Mitochondrial Network using Orange Emissive Carbon Nanodots as Fluorescent Probe 橘色碳纳米点荧光探针对线粒体网络的超分辨结构成像

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-11 DOI: 10.1002/cnma.202400638

Richa Garg, Runmi Kundu, Kush Kaushik, Abdul Salam, Chayan Kanti Nandi

引用次数: 0

Microfluidic Generation of Calcium Alginate Hydrogel Beads using External Gelation for Microalgae Cultivation 外凝胶微流控制备海藻酸钙水凝胶珠用于微藻培养

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-09 DOI: 10.1002/cnma.202400549

Du Tuan Tran, Fariba Malekpour Galogahi, Nhat-Khuong Nguyen, Uditha Roshan, Ajeet Singh Yadav, Kamalalayam Rajan Sreejith, Nam-Trung Nguyen

{"title":"Microfluidic Generation of Calcium Alginate Hydrogel Beads using External Gelation for Microalgae Cultivation","authors":"Du Tuan Tran, Fariba Malekpour Galogahi, Nhat-Khuong Nguyen, Uditha Roshan, Ajeet Singh Yadav, Kamalalayam Rajan Sreejith, Nam-Trung Nguyen","doi":"10.1002/cnma.202400549","DOIUrl":"https://doi.org/10.1002/cnma.202400549","url":null,"abstract":"Calcium alginate hydrogel beads are spherical polymeric particles with highly crosslinked network structures, known for their excellent monodispersity and retention capabilities. These beads, produced by high-throughput droplet-based microfluidic techniques, are widely used for encapsulating and cultivating various microscopic particles such as cells. While internal gelation has been commonly utilized for crosslinking of calcium alginate hydrogel beads in microalgae encapsulation, the use of external gelation remains underexplored. This study utilized droplet-based microfluidic technology combined with external gelation to produce calcium alginate hydrogel beads for encapsulating the microalgal strain Chlorella vulgaris. Emulsions containing emulsified calcium ions served as the crosslinking phase. Initial geometrical analysis indicated that beads crosslinked with a high concentration of calcium ions (1 g/mL) achieve superior size uniformity and shape consistency. Microalgae cultivation experiments using these beads demonstrated steady growth of Chlorella vulgaris over a 5-day period, with the beads maintaining their geometric stability until the final day when minor cell leakage was observed. These results provide a foundation for future molecular-level studies on microalgae cultivation in hydrogel beads and suggest potential applications in fields requiring precisely controlled microalgae growth.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400549","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced the Long-Cycle Performance of SiOx/C Anode Materials Via Ti and Sn Bimetallic Doping Strategy 通过Ti和Sn双金属掺杂策略提高SiOx/C阳极材料的长周期性能

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-08 DOI: 10.1002/cnma.202400637

Baoguo Yang, Zhe Bai, Qian Luo, Zhenyuan Tang, Jun Li

{"title":"Enhanced the Long-Cycle Performance of SiOx/C Anode Materials Via Ti and Sn Bimetallic Doping Strategy","authors":"Baoguo Yang, Zhe Bai, Qian Luo, Zhenyuan Tang, Jun Li","doi":"10.1002/cnma.202400637","DOIUrl":"https://doi.org/10.1002/cnma.202400637","url":null,"abstract":"Silicon oxide (SiOx), due to its significant reversible capacity and significantly reduced volume expansion compared to pure silicon, holds promise as a candidate for high-performance lithium-ion battery anode materials. Unfortunately, SiOx still faces challenges for commercialization due to its volume expansion exceeding 160 %, low initial coulombic efficiency, and low electrical conductivity. In this study, we employed metal oxides containing Ti and Sn to dope SiOx/C materials, utilizing a sol-gel method to prepare SiOx/TiO2/SnO2/C composite anode materials. Furthermore, we adjusted the doping ratios of Sn and Ti to explore the optimal amount for improving the electrochemical performance of the material. Ultimately, it was found that the SiOx/TiO2/SnO2/C composite material prepared with a molar ratio of silicon, titanium, and tin at 10 : 0.7 : 0.3 exhibited the best performance, achieving an initial discharge capacity of 1845.33 mAh ⋅ g−1 at a current density of 100 mA ⋅ g−1 and maintaining a reversible capacity of 843.41 mAh ⋅ g−1 after 100 cycles, with a capacity retention rate of 75.9 %. This work provides a relatively simple method to composite Ti and Sn metal oxides with SiOx, introducing additional conductive pathways to enhance the material‘s conductivity.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cobalt Doped Iron Based Perovskite Catalysts for Efficient Reduction of Nitrate to Ammonia 钴掺杂铁基钙钛矿催化剂的硝酸高效还原制氨研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-02-05 DOI: 10.1002/cnma.202400632

Wahid Meles Syoum, Liyan Niu, Kai Zhang, Haoran Guo, Jun Song Chen, Tingshuai Li

引用次数: 0

High-Performance Ammonia Sensing with Citrus Hystrix-Mediated ZnO Nanoparticles in TFT-Based Devices 柑橘hystrix介导的ZnO纳米颗粒在tft基器件中的高性能氨传感

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-27 DOI: 10.1002/cnma.202400491

Ashwath Narayana, Mahendra Prashanth K V, Veerabhadraswamy B N, Bharathkumar Mareddi, Santosh Y Khatavi, B L V Prasad, C V Yelamaggad

{"title":"High-Performance Ammonia Sensing with Citrus Hystrix-Mediated ZnO Nanoparticles in TFT-Based Devices","authors":"Ashwath Narayana, Mahendra Prashanth K V, Veerabhadraswamy B N, Bharathkumar Mareddi, Santosh Y Khatavi, B L V Prasad, C V Yelamaggad","doi":"10.1002/cnma.202400491","DOIUrl":"https://doi.org/10.1002/cnma.202400491","url":null,"abstract":"We present a sustainable green synthesis approach for zinc oxide nanoparticles (ZnO NPs) utilizing Citrus hystrix leaf extract and their application as an active medium in a thin film transistor (TFT)-based ammonia gas sensor. For the first time, ZnO NPs derived from Citrus hystrix serve as a receptor layer in a thin film transistor (TFT) device, enabling selective ammonia detection at a significantly reduced initiation temperature. The synthesized ZnO NPs, with a wurtzite structure and an average crystallite size of approximately 14 nm, are deposited onto the TFT sensor without the need for an external conducting layer. The sensor demonstrates excellent sensitivity and selectivity, achieving a maximum response of ~85 % at 20 ppm, with a rapid response time of about 10 seconds at room temperature. Notably, the TFT device exhibits an electron mobility of ~10.2 cm2/V ⋅ s and a high on/off ratio (>10⁴) at room temperature. The sensing mechanism is attributed to the oxidation-reduction interactions between surface-adsorbed oxygen and NH₃ molecules on the ZnO NPs, which modulate the device's electrical conductivity. This work underscores the importance of eco-friendly fabrication of high-performance, durable devices, addressing contemporary environmental and economic concerns.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability 超薄2D Co-MOF展示了卓越的电催化析氧以及无与伦比的稳定性

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-27 DOI: 10.1002/cnma.202400649

Parul Sood, Harshita Bagdwal, Krishankant, Arti Joshi, Monika Singh

{"title":"Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability","authors":"Parul Sood, Harshita Bagdwal,  Krishankant, Arti Joshi, Monika Singh","doi":"10.1002/cnma.202400649","DOIUrl":"https://doi.org/10.1002/cnma.202400649","url":null,"abstract":"Oxygen Evolution Reaction (OER) is typically carried out utilizing noble metals and metal oxides based nanostructures. Yet, due to their numerous drawbacks, including high cost, poor stability and negative environmental effects; researchers are driven to create new electro-active materials. To that end, we report an ultrathin 2D Co-MOF [Co2(bpe)2.5(NO3)4(CH3O)] (Co-MOF) that crystallized under hydrothermal conditions, showing a terrific OER activity with an overpotential of 267 mV at the current density of 10 mA cm−2 and the low Tafel slope value of 104 mV dec−1. Two-dimensional MOFs offer numerous advantages over 3D MOFs such as better exposure and accessibility of active sites. The layered structure of 2D MOFs can provide greater structural flexibility, which can be beneficial for accommodating the changes during the OER process and maintaining structural integrity under operating conditions. The performance of Co-MOF surpasses commercially available OER catalyst RuO2, demonstrating an unprecedented prolonged stability of 112 hours, which, to the best of our knowledge, represents the longest stability, observed for any pristine MOF to date. From the post-OER characterization, it was discovered that in situ formed species, Co(OH)2 and CoOOH served as the active sites responsible for oxygen evolution.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0