ChemNanoMat最新文献

Front Cover: (ChemNanoMat 6/2025) 封面：（ChemNanoMat 6/2025）

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-06-11 DOI: 10.1002/cnma.202580601

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Recent Trends in Perovskite Quantum Dots-Based S-Scheme Photocatalysis for CO2 Photoreduction 基于钙钛矿量子点的s-方案光催化CO2光还原研究进展

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-06-04 DOI: 10.1002/cnma.202500016

Vatika Soni, Parul Rana, Rubeena Chauhan, Pardeep Singh, Archana Singh, Vishal Chaudhary, Aftab Aslam Parwaz Khan, Pankaj Raizada

{"title":"Recent Trends in Perovskite Quantum Dots-Based S-Scheme Photocatalysis for CO2 Photoreduction","authors":"Vatika Soni, Parul Rana, Rubeena Chauhan, Pardeep Singh, Archana Singh, Vishal Chaudhary, Aftab Aslam Parwaz Khan, Pankaj Raizada","doi":"10.1002/cnma.202500016","DOIUrl":"https://doi.org/10.1002/cnma.202500016","url":null,"abstract":"Perovskite quantum dots (PQDs)-based S-scheme heterojunctions are evolving as a cutting-edge approach for driving effective CO2 photoreduction, providing a sustainable way for addressing global energy needs as well as environmental challenges. This review paper delves into the progressions in PQD-based S-scheme heterojunctions, highlighting their exclusive synthesis methods, characterization techniques, photocatalytic mechanisms, catalytic efficiency, as well as potential applications. The S-scheme junctions not only improve the spatial isolation of photogenerated charge carriers but also reserve high oxidation/reduction potentials, enabling efficient CO2 photoreduction into value-added CO and CH4 products. Herein, the roles of lead-based and lead-free PQDs heterojunctions are classified, focusing on their synergistic integration with other catalytic materials, amended CO2 adsorption, and higher stability under photocatalytic environments. Various challenges, long-term durability, as well as scalability are also highlighted alongside future perspectives for enhancing structural design and exploring novel compositions. By scientifically bridging the gap between lead-based efficacy and lead-free sustainability, this paper highlights the transformative potential of PQDs-based S-scheme heterojunctions. These materials pave the pathway for advanced photoactive catalysts capable of addressing serious energy as well as environmental issues, fostering novelty in CO2 reduction processes.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256393","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

Effect of Different Electrolytes on Supercapacitive Performance of Activated Charcoal/Nafion Doped by Mxene Hybrid Electrode 不同电解质对Mxene掺杂活性炭/钠离子超电容性能的影响

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-30 DOI: 10.1002/cnma.202500087

Savita S. Mane, Girish M. Joshi

{"title":"Effect of Different Electrolytes on Supercapacitive Performance of Activated Charcoal/Nafion Doped by Mxene Hybrid Electrode","authors":"Savita S. Mane, Girish M. Joshi","doi":"10.1002/cnma.202500087","DOIUrl":"https://doi.org/10.1002/cnma.202500087","url":null,"abstract":"Herein, activated charcoal/Nafion Mxene composite is demonstrated as an active material for supercapacitors; modified structural amorphous phase to semicrystalline, which is observed by X-ray diffraction. Newly induced OH (3397 cm−1) and CH (2123 cm−1) bonding are confirmed by Fourier transform infrared spectroscopy. Raman spectroscopy reveals presence of G and D bands. Microporosity is forseen by electron microscopy technique. Brunauer–Emmett–Teller analysis discloses a decrease in surface area (1017.5 to 686.95 m1 g−1) due to Mxene loading. Electrochemical conductivity and capacitance performance are tested as a function of aqueous electrolytes (H2SO4, Na2SO4, KCl-FeCN6, and KOH). Electrochemical performance is mainly dependent on the electrolyte medium. The desirable H2SO4 electrolyte confirms it, and exhibits higher capacitance and conductivity, with lower voltage drop. It is further confirmed by linear fitting (V2/1 vs i/ V1/1). It is displayed for capacitance and diffusion contribution mapped by Dunn's model. Electrode with a 10 wt% of Mxene demonstrated the higher capacitance of 429 F g−1 in H2SO4 electrolyte with a current density of 0.6 A g−1. This electrode demonstrated a capacitance retention of 93% over 500 cycles may be enable to deploy for the device application.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255868","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}

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Front Cover: (ChemNanoMat 5/2025) 封面：（ChemNanoMat 5/2025）

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-28 DOI: 10.1002/cnma.202580501

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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 : 2025-05-27 DOI: 10.1002/cnma.202500211

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Surface Modification of Co3O4 by HfO2 for Efficient Bifunctional Electrocatalyst for Hydrogen and Oxygen Evolution 用HfO2对Co3O4表面进行高效双功能析氢氧电催化剂的改性

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-14 DOI: 10.1002/cnma.202500085

Anju Rani, Sukriti Sagar, Imtiaz Ahmed, Krishna Kanta Haldar

{"title":"Surface Modification of Co3O4 by HfO2 for Efficient Bifunctional Electrocatalyst for Hydrogen and Oxygen Evolution","authors":"Anju Rani, Sukriti Sagar, Imtiaz Ahmed, Krishna Kanta Haldar","doi":"10.1002/cnma.202500085","DOIUrl":"https://doi.org/10.1002/cnma.202500085","url":null,"abstract":"This study investigates the significant enhancement of electrocatalytic activity for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) achieved through surface modification of cobalt oxide (Co3O4) with hafnium dioxide (HfO2). A mechanochemical approach is used to synthesize the surface-modified catalyst, optimizing the electronic properties and active site accessibility of Co3O4 to attain superior electrocatalytic performance. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) characterization techniques confirmed the successful integration of HfO2 into the Co3O4 structure, resulting in an altered surface morphology and improved electronic conductivity. Electrochemical assessments demonstrate that the Co3O4/HfO2 composite material exhibits exceptionally low overpotentials of 262 and 167 mV for the OER and HER, respectively, at a current density of 10 mA cm−2. These values significantly outperform those of unmodified Co3O4, which presents overpotentials exceeding 467 and 311 mV for the OER and HER, respectively. High mass activity and turnover frequency (TOF) values are observed for the Co3O4/HfO2 composite, highlighting the catalyst's efficiency. This outstanding performance is attributed to enhanced charge transfer kinetics and optimized electronic interactions facilitated by the HfO2 modification. Consequently, this study underscores the potential of the Co3O4/HfO2 composite as a cost-effective and efficient electrocatalyst for water-splitting applications, reveal advancements in renewable energy technologies.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255962","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

Continuous Flow Assisted Synthesis of SnO2–CdS Nano-Heterostructures with Enhanced Oxygen and Sulfur Vacancies for Hypersensitive Electrochemical Determination of Metronidazole 连续流辅助合成具有增强氧和硫空位的SnO2-CdS纳米异质结构用于甲硝唑的超敏电化学测定

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-11 DOI: 10.1002/cnma.202500048

Utsav Sengupta, Jit Satra, Muthaimanoj Periyasamy, Arik Kar

{"title":"Continuous Flow Assisted Synthesis of SnO2–CdS Nano-Heterostructures with Enhanced Oxygen and Sulfur Vacancies for Hypersensitive Electrochemical Determination of Metronidazole","authors":"Utsav Sengupta, Jit Satra, Muthaimanoj Periyasamy, Arik Kar","doi":"10.1002/cnma.202500048","DOIUrl":"https://doi.org/10.1002/cnma.202500048","url":null,"abstract":"Aquatic pollution from pharmaceutical residues, particularly non-steroidal anti-inflammatory drugs (NSAIDs), poses serious ecological risks. Real-time monitoring of these pollutants is crucial for environmental sustainability. This study presents a highly sensitive electrochemical sensor based on ultrasmall SnO2–CdS heterostructured semiconductor nanocomposite for detecting the antibiotic metronidazole (MNZ), a NSAID. The sensor was developed via a simple and efficient continuous flow microreactor technology at a realistically low reaction temperature and exceptionally short period. Compared to individual SnO2 and CdS, the heterostructure demonstrated superior electrocatalytic performance, attributed to the formation of oxygen and sulfur vacancies at the junction, enhancing diffusion and electro-reduction of the analyte. The outstanding performance of the sensor might also be related to the formation of a heterojunction between SnO2 and CdS semiconductors, which led to improved electron conduction efficiency through the hybrid electronic structure. The sensor exhibited high sensitivity (0.7044 µA µM−1 cm−2), excellent selectivity, a low detection limit (0.0008 µM), a wide linear range (0.01-1500 µM), and strong long-term stability. Its practical potential was confirmed through successful detection of MNZ in real samples like lake water and human urine.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256288","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

Preparation of Lignocellulosic Nanofibrils Directly from Corn Straw Applied for the Stabilization of Pickering Emulsions 直接从玉米秸秆中制备木质纤维素纳米原纤维用于酸洗乳的稳定

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-09 DOI: 10.1002/cnma.202500098

Xuhai Zhu, Ruizhe Li, Yangbing Wen, Yuzhe Jin, Rongjun Lin, Rui Lu, Fang Lu

{"title":"Preparation of Lignocellulosic Nanofibrils Directly from Corn Straw Applied for the Stabilization of Pickering Emulsions","authors":"Xuhai Zhu, Ruizhe Li, Yangbing Wen, Yuzhe Jin, Rongjun Lin, Rui Lu, Fang Lu","doi":"10.1002/cnma.202500098","DOIUrl":"https://doi.org/10.1002/cnma.202500098","url":null,"abstract":"This study proposes a straightforward, cost-effective, and environmentally benign approach for the pretreatment of corn straw using alkaline cationization, followed by mechanical defibrillation to yield lignocellulosic nanofibrils (LCNF) as stabilizers of Pickering emulsions. Two distinct types of LCNFs (designated as LCNF-0.07 and LCNF-0.14) are obtained and characterized by a range of techniques. The charge density of these LCNFs is found to be 0.07 and 0.14 meq g−1, respectively. The findings demonstrate that continuous alkaline cationic pretreatment can effectively remove most hemicelluloses and lignin, thereby loosening the structure of the fiber cell wall and facilitating the subsequent nanofibrillation of the resulting cellulose-rich solid (lignocellulose). The diameters of individual LCNFs are typically in the range of 20–30 nm, exhibiting high aspect ratios, a fine web-like structure, high dispersion stability, and good thermal stability. Under optimal conditions, long-term emulsion stabilization is achieved with LCNF-0.14 at concentrations as low as 0.7 wt% and with a low oil fraction of up to 10%. This can be attributed to the Pickering stabilization achieved by irreversible adsorption of the LCNF at the oil–water interface (as evidenced by fluorescent microscopy) and subsequent formation of an interdroplet LCNF network in the continuous phase (as verified by scanning electron microscope images).","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144256309","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

Modification of Graphitic Carbon Nitride/Pyromellitic Diimide as a Robust Fluorescent Probe for Silver Detection in Water 石墨氮化碳/焦二酰亚胺作为水中银检测荧光探针的改性研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-08 DOI: 10.1002/cnma.202400663

Soufian Chakir, Qiankun Xu, Yaru Li, Yu Ding, Ziteng Huang, Daosheng Sun, Yongfei Xu, Xianbiao Wang

{"title":"Modification of Graphitic Carbon Nitride/Pyromellitic Diimide as a Robust Fluorescent Probe for Silver Detection in Water","authors":"Soufian Chakir, Qiankun Xu, Yaru Li, Yu Ding, Ziteng Huang, Daosheng Sun, Yongfei Xu, Xianbiao Wang","doi":"10.1002/cnma.202400663","DOIUrl":"https://doi.org/10.1002/cnma.202400663","url":null,"abstract":"Silver ions (Ag+), though valuable in industry and medicine, become hazardous at high concentrations, requiring reliable monitoring in environmental media. In this study, a sensitive and selective fluorescent probe is developed by modifying a graphitic carbon nitride/pyromellitic diimide (g-C3N4/PDI, CNP) composite with dithiothreitol via a simple ring-opening reaction. The introduction of SH and OH groups improves the probe's water dispersibility and affinity for Ag+, enhancing its adsorption capacity and detection performance. This leads to a twofold increase in fluorescence intensity, significantly improved selectivity, and a 36% increase in the Stern–Volmer quenching constant (Ksv). Furthermore, the optimized probe exhibits excellent stability (relative standard deviation <1%) and a substantial decrease in the limit of detection from 7.59 to 1.38 μM, confirming its high sensitivity. This green, cost-effective, and easily prepared probe presents a promising solution for accurate and reliable Ag+ monitoring in environmental and complex matrices.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255883","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

Reverse Micelle Synthesis of AuyNi100-y Nanoparticles Decorated Multiwalled Carbon Nanotubes as High-Performance Anode Electrocatalysts for Direct Borohydride-Hydrogen Peroxide Fuel Cells 修饰多壁碳纳米管的AuyNi100-y纳米颗粒反胶束合成作为硼氢化物-过氧化氢直接燃料电池高性能阳极电催化剂

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-05-08 DOI: 10.1002/cnma.202500005

Chandan Kumar Raul, Tuli Chatterjee, Monalisa Halder, Ranjita Sinha, Santanu Dey, Soumen Basu, Ajit Kumar Meikap

{"title":"Reverse Micelle Synthesis of AuyNi100-y Nanoparticles Decorated Multiwalled Carbon Nanotubes as High-Performance Anode Electrocatalysts for Direct Borohydride-Hydrogen Peroxide Fuel Cells","authors":"Chandan Kumar Raul, Tuli Chatterjee, Monalisa Halder, Ranjita Sinha, Santanu Dey, Soumen Basu, Ajit Kumar Meikap","doi":"10.1002/cnma.202500005","DOIUrl":"https://doi.org/10.1002/cnma.202500005","url":null,"abstract":"Cost-effective and efficient electrocatalysts for the borohydride oxidation reaction (BOR) are essential for improving the performance of direct borohydride-hydrogen peroxide fuel cells (DBHPFCs). In this work, AuNi nanoparticles decorated multiwalled carbon nanotubes (MWCNT) (AuNi/MWCNT) were synthesized via a reverse micelle method using sodium bis(2-ethylhexyl) sulfosuccinate at 303 K and applied as anode electrocatalysts for DBHPFCs. Various physicochemical and electrochemical characterization techniques were employed. Among the synthesized catalysts, Au50Ni50/MWCNT demonstrated superior performance, including a higher electrochemically active surface area (ECSA: 923 cm2 mg−1), turnover frequency (TOF: 0.21 s−1), peak current density (73 mA cm−2), lower activation energy (7.4 kJ mol−1), exchanged electron number (5.8), lower charge transfer resistance (47.66 ohms), highest stability, and the lowest poisoning rate (0.14 <math></math> 10−3% s−1) compared to Au100/MWCNT and others. DBHPFCs constructed with Au50Ni50/MWCNT as the anode and a Pt mesh (1 cm × 1 cm) as the cathode achieved a peak power density of 67.11 mW cm−2 and a current density of 70 mA cm−2 at 303 K. The exceptional electrocatalytic performance of the AuNi/MWCNT electrocatalyst offers valuable insights for developing innovative, cost-effective, and durable electrocatalysts for DBHPFC applications.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 6","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255887","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