Pub Date : 2024-09-07DOI: 10.1016/j.mtchem.2024.102299
Mohammed G. Kotp, Shiao-Wei Kuo
Solar energy plays a pivotal role in sustainable development and is increasingly fundamental to modern human life. In the realm of sustainable energy resources, porous polymeric materials have emerged as promising alternatives to traditional inorganic materials for photocatalysis. These materials offer unique advantages such as tailored structural designs, high surface areas, diverse monomer compositions, and distinct optoelectronic properties, enhancing their efficiency in harnessing solar energy for catalytic applications.
{"title":"Harnessing solar energy with porous organic polymers: Advancements, challenges, economic, environmental impacts and future prospects in sustainable photocatalysis","authors":"Mohammed G. Kotp, Shiao-Wei Kuo","doi":"10.1016/j.mtchem.2024.102299","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102299","url":null,"abstract":"Solar energy plays a pivotal role in sustainable development and is increasingly fundamental to modern human life. In the realm of sustainable energy resources, porous polymeric materials have emerged as promising alternatives to traditional inorganic materials for photocatalysis. These materials offer unique advantages such as tailored structural designs, high surface areas, diverse monomer compositions, and distinct optoelectronic properties, enhancing their efficiency in harnessing solar energy for catalytic applications.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"26 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142257755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-06DOI: 10.1016/j.mtchem.2024.102293
Haoran Lai, Xuejuan Ma, Penghui Shang, Xi Chen, Yaqin Wang, Jiyang Li, Zhen Ge
To enhance the functionality of all-solid-state fiber-shaped electrode, high mass loading and well infiltration of gel electrolytes should be carefully addressed. Here, electrospinning glycerol-modified polyacrylonitrile (PAN) nanofibers (GPN) are attached to Ti wire as porous high mass loading fiber shaped aerogel like substrate, and Polyaniline:poly(styrenesulfonate)-carbon (PANI:PSS-carbon) ink is selected as active materials dispersion. PANI:PSS-carbon easily infiltrates into GPN@Ti and supports a hollow fiber-shaped electrode with micropores structure through a combination of dip-coating and freeze-drying processes. Thank to high mass loading pseudo-capacitive materials and well infiltrate channel for gel-electrolyte, the resulted PANI:PSS-carbon@GPN@Ti electrode shows a high specific length capacitance of 553.9 mF cm (2637.6 mF cm) in an all-solid-state fiber-shaped supercapacitor device, outperforming the majority of previously reported fiber-shaped electrodes. These features suggest promising potential for utilizing PANI:PSS-carbon@GPN@Ti electrode in solid-state energy storage devices. In addition, this simple strategy gives a new view for constructing high performance gel-electrolyte-friendly flexible electronic electrode.
{"title":"Building polyaniline:poly(styrenesulfonate)-carbon multifunctional skeleton on aerogel like substrate for high performance gel-electrolyte-friendly fiber-shaped hollow porous electrode","authors":"Haoran Lai, Xuejuan Ma, Penghui Shang, Xi Chen, Yaqin Wang, Jiyang Li, Zhen Ge","doi":"10.1016/j.mtchem.2024.102293","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102293","url":null,"abstract":"To enhance the functionality of all-solid-state fiber-shaped electrode, high mass loading and well infiltration of gel electrolytes should be carefully addressed. Here, electrospinning glycerol-modified polyacrylonitrile (PAN) nanofibers (GPN) are attached to Ti wire as porous high mass loading fiber shaped aerogel like substrate, and Polyaniline:poly(styrenesulfonate)-carbon (PANI:PSS-carbon) ink is selected as active materials dispersion. PANI:PSS-carbon easily infiltrates into GPN@Ti and supports a hollow fiber-shaped electrode with micropores structure through a combination of dip-coating and freeze-drying processes. Thank to high mass loading pseudo-capacitive materials and well infiltrate channel for gel-electrolyte, the resulted PANI:PSS-carbon@GPN@Ti electrode shows a high specific length capacitance of 553.9 mF cm (2637.6 mF cm) in an all-solid-state fiber-shaped supercapacitor device, outperforming the majority of previously reported fiber-shaped electrodes. These features suggest promising potential for utilizing PANI:PSS-carbon@GPN@Ti electrode in solid-state energy storage devices. In addition, this simple strategy gives a new view for constructing high performance gel-electrolyte-friendly flexible electronic electrode.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"18 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The nickel-cobalt layered double hydroxide (NiCo-LDH) with high theoretical capacitance has great application potential as supercapacitor (SC) electrodes. Nevertheless, poor conductivity, low stability, and aggregation propensity have been considered as its major drawbacks. In this study, we have successfully constructed the amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterogeneous interface composites by introducing two phosphate shells to improve the electrochemical properties. The combination of NiCo–P's high rate performance with the high capacitive performance provided by the CoP coating addresses the issue of insufficient conductivity of the original NiCo-LDH, resulting in composite electrodes with excellent electrochemical performance. At the current density of 1 A g, the specific capacitance is 1652.8 F g, and the rate performance is 70.8 % when the current increases to 20 times. The capacitance retention is 87.5 % after 5000 cycles at 30 A g. The asymmetric supercapacitor prepared with AC as the anode electrode shows a high specific capacitance of 118 F g in the water-based electrolyte system, with a capacitance retention of 60.1 % after 10,000 cycles at 10 A g. Furthermore, at a power density of 800 W kg, it exhibites a maximum energy density of 42 Wh kg. This study has demonstrated the enormous potential of interface design of heterostructures for supercapacitors.
镍钴层状双氢氧化物（NiCo-LDH）具有很高的理论电容，作为超级电容器（SC）电极具有很大的应用潜力。然而，导电性差、稳定性低和易聚集一直被认为是其主要缺点。在本研究中，我们通过引入两个磷酸盐壳，成功构建了非晶/晶态 NiCo-LDH@CoP@NiCo-P异质界面复合材料，以改善其电化学性能。NiCo-P 的高速率性能与 CoP 涂层提供的高电容性能相结合，解决了原始 NiCo-LDH 电导率不足的问题，使复合电极具有优异的电化学性能。在电流密度为 1 A g 时，比电容为 1652.8 F g，当电流增加到 20 倍时，速率性能为 70.8%。以交流电为阳极电极制备的不对称超级电容器在水基电解质体系中显示出 118 F g 的高比电容，在 10 A g 下循环 10,000 次后电容保持率为 60.1%，此外，在功率密度为 800 W kg 时，其最大能量密度为 42 Wh kg。这项研究证明了超级电容器异质结构界面设计的巨大潜力。
{"title":"Interface engineering boosting the capacitive performance by constructing amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterostructure","authors":"Panpan Li, Xiaoliang Wang, Shaobin Yang, Kaibin Chu, Honglei Zhang, Dechao Chen, Qin Li","doi":"10.1016/j.mtchem.2024.102274","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102274","url":null,"abstract":"The nickel-cobalt layered double hydroxide (NiCo-LDH) with high theoretical capacitance has great application potential as supercapacitor (SC) electrodes. Nevertheless, poor conductivity, low stability, and aggregation propensity have been considered as its major drawbacks. In this study, we have successfully constructed the amorphous/crystalline NiCo-LDH@CoP@NiCo–P heterogeneous interface composites by introducing two phosphate shells to improve the electrochemical properties. The combination of NiCo–P's high rate performance with the high capacitive performance provided by the CoP coating addresses the issue of insufficient conductivity of the original NiCo-LDH, resulting in composite electrodes with excellent electrochemical performance. At the current density of 1 A g, the specific capacitance is 1652.8 F g, and the rate performance is 70.8 % when the current increases to 20 times. The capacitance retention is 87.5 % after 5000 cycles at 30 A g. The asymmetric supercapacitor prepared with AC as the anode electrode shows a high specific capacitance of 118 F g in the water-based electrolyte system, with a capacitance retention of 60.1 % after 10,000 cycles at 10 A g. Furthermore, at a power density of 800 W kg, it exhibites a maximum energy density of 42 Wh kg. This study has demonstrated the enormous potential of interface design of heterostructures for supercapacitors.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"8 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-06DOI: 10.1016/j.mtchem.2024.102264
Feng Wang, Delano P. Chong
Sustainable aviation fuel (SAF, eFuel), predominantly composed of polycyclo-hydrocarbons, is a promising alternative to conventional fossil jet fuels. It offers cleaner options for achieving immediate carbon neutrality. This study focuses on norbornyl derivatives containing seven carbon atoms (CH), including norbornadiene (NBD), quadricyclane (QC), norbornene (NBN), [2.2.1]propellane (PPL), and norbornane (NBA). These compounds are components of high energy density (HED) fuels or precursor molecules. Understanding their chemical electronic structures reveals how energy is stored in HED compounds. The carbon nuclear magnetic resonance (C NMR) chemical shifts and C1s core electron binding energy (CEBE) properties were calculated using density functional theory (DFT). The results suggest that saturated C–C single σ-bonds and strained polycycloalkane structures are the primary energy storage mechanisms for these hydrocarbons. This study provides valuable theoretical insights for the development of sustainable HED aviation fuel (eFuel).
{"title":"Polycycloalkanes at the Helm: Exploring high energy density eFuel with norbornyl derivatives","authors":"Feng Wang, Delano P. Chong","doi":"10.1016/j.mtchem.2024.102264","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102264","url":null,"abstract":"Sustainable aviation fuel (SAF, eFuel), predominantly composed of polycyclo-hydrocarbons, is a promising alternative to conventional fossil jet fuels. It offers cleaner options for achieving immediate carbon neutrality. This study focuses on norbornyl derivatives containing seven carbon atoms (CH), including norbornadiene (NBD), quadricyclane (QC), norbornene (NBN), [2.2.1]propellane (PPL), and norbornane (NBA). These compounds are components of high energy density (HED) fuels or precursor molecules. Understanding their chemical electronic structures reveals how energy is stored in HED compounds. The carbon nuclear magnetic resonance (C NMR) chemical shifts and C1s core electron binding energy (CEBE) properties were calculated using density functional theory (DFT). The results suggest that saturated C–C single σ-bonds and strained polycycloalkane structures are the primary energy storage mechanisms for these hydrocarbons. This study provides valuable theoretical insights for the development of sustainable HED aviation fuel (eFuel).","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"18 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-05DOI: 10.1016/j.mtchem.2024.102294
Richa Jaswal, Dinesh Kumar, Joshua Lee, Chan Hee Park, Kyung Hyun Min
Herein, we report bifunctional 2D aligned PCL@Au-PDA nanofibrous hybrid scaffolds composed of core-shell Au-PDA and PCL were prepared using a facile one-step electrospinning method. 36 nm sized AuNPs were surface functionalized with a 15 nm shell of PDA and resulted in Au-PDA with two concentrations of 1.5 mg and 3.0 mg uniformly dispersed in PCL that provided unique topological, biological properties and potential synergistic outcomes. Besides, PCL@Au-PDA provides exceptional extracellular matrix (ECM) for cell adhesion, nerve growth, proliferation, and differentiation of PC-12 and high affinity to S-42 cells. The gene expression analysis (qRT-PCR) showed a significantly increased expression level of the Actin beta, TREK-1, and MAP2 which further implied enhanced cell migration, proliferation, maturation, and differentiation. There was more than a 2.2-fold increase in the neurite length with PCL@Au-PDA as compared to pure PCL. Also, PCL@Au-PDA showed excellent photothermal efficiency and was found to ablate 95.23 % MCF-7 cells in 5.0 min at 0.5 W/cm of NIR laser power. The 15 nm PDA surface coating on AuNPs amplifies the photothermal effect of PCL@Au-PDA and accelerates the conversion of light energy to heat energy which stimulates the destruction of human breast cancer cells. FACS analysis showed the apoptotic percentages for MCF-7 cells at 69.67 % with PCL@Au-PDA whereas for pure PCL only 7.93 % were recorded which suggested that the superior plasmonic photothermal efficacy of PCL@Au-PDA even at low power density. PCL@Au-PDA nanofibers could be a highly promising bioactive material for breast cancer phototherapy and a possible bioimplant for sensation restoration after breast regeneration.
{"title":"Au-Polydopamine integrated polycaprolactone-based 2D plasmonic nanofibrous bimodal platform for synergistically enhanced peripheral neuropathy and superior cancer theranostics","authors":"Richa Jaswal, Dinesh Kumar, Joshua Lee, Chan Hee Park, Kyung Hyun Min","doi":"10.1016/j.mtchem.2024.102294","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102294","url":null,"abstract":"Herein, we report bifunctional 2D aligned PCL@Au-PDA nanofibrous hybrid scaffolds composed of core-shell Au-PDA and PCL were prepared using a facile one-step electrospinning method. 36 nm sized AuNPs were surface functionalized with a 15 nm shell of PDA and resulted in Au-PDA with two concentrations of 1.5 mg and 3.0 mg uniformly dispersed in PCL that provided unique topological, biological properties and potential synergistic outcomes. Besides, PCL@Au-PDA provides exceptional extracellular matrix (ECM) for cell adhesion, nerve growth, proliferation, and differentiation of PC-12 and high affinity to S-42 cells. The gene expression analysis (qRT-PCR) showed a significantly increased expression level of the Actin beta, TREK-1, and MAP2 which further implied enhanced cell migration, proliferation, maturation, and differentiation. There was more than a 2.2-fold increase in the neurite length with PCL@Au-PDA as compared to pure PCL. Also, PCL@Au-PDA showed excellent photothermal efficiency and was found to ablate 95.23 % MCF-7 cells in 5.0 min at 0.5 W/cm of NIR laser power. The 15 nm PDA surface coating on AuNPs amplifies the photothermal effect of PCL@Au-PDA and accelerates the conversion of light energy to heat energy which stimulates the destruction of human breast cancer cells. FACS analysis showed the apoptotic percentages for MCF-7 cells at 69.67 % with PCL@Au-PDA whereas for pure PCL only 7.93 % were recorded which suggested that the superior plasmonic photothermal efficacy of PCL@Au-PDA even at low power density. PCL@Au-PDA nanofibers could be a highly promising bioactive material for breast cancer phototherapy and a possible bioimplant for sensation restoration after breast regeneration.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"19 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Volatile organic compounds (VOCs) posed a significant threat to the sustainability of ecosystems and human health, and photocatalytic oxidation technology emerged as one of the promising strategies. In this work, N-doped TiO composites were prepared by ball milling utilized melamine as a precursor for the photodegradation of high-concentration ethyl acetate under visible light. The electric field polarization effect of TiO facilitated the exposure of active sites, promoting separation and migration of photogenerated carriers. DFT calculations further demonstrated that N–TiO possessed better electron transition capabilities and stronger pollutant adsorption abilities. Notably, the optimized N–TiO (9-N-P25) exhibited an ethyl acetate removal rate of up to 98.8 % (2000 ppm) under visible light irradiation, and the speed constant k values (0.09488 min) was 2.66 folds higher than that of pure TiO (0.03571 min). The ·O and ·OH free radicals played major roles in the photodegradation process, and the interaction mechanism between free radicals and pollutant molecules was analyzed through in-situ infrared. Additionally, the mechanism of photocatalytic degradation of ethyl acetate by N–TiO was further elucidated. This work provided new insights into the semiconductor photodegradation of high-concentration VOCs, offering novel pathways for removing VOCs in the atmospheric environment.
挥发性有机化合物（VOCs）对生态系统的可持续性和人类健康构成了重大威胁，而光催化氧化技术则成为一种前景广阔的策略。本研究利用三聚氰胺作为前驱体，通过球磨法制备了掺杂 N 的 TiO 复合材料，用于在可见光下光降解高浓度醋酸乙酯。TiO 的电场极化效应促进了活性位点的暴露，促进了光生载流子的分离和迁移。DFT 计算进一步证明，N-TiO 具有更好的电子转换能力和更强的污染物吸附能力。值得注意的是，优化的 N-TiO (9-N-P25) 在可见光照射下的乙酸乙酯去除率高达 98.8 %（2000 ppm），速度常数 k 值（0.09488 分钟）比纯 TiO（0.03571 分钟）高出 2.66 倍。-O和-OH自由基在光降解过程中发挥了重要作用，并通过原位红外分析了自由基与污染物分子的相互作用机理。此外，还进一步阐明了 N-TiO 光催化降解醋酸乙酯的机理。这项工作为半导体光降解高浓度挥发性有机化合物提供了新的见解，为去除大气环境中的挥发性有机化合物提供了新的途径。
{"title":"Nitrogen-induced TiO2 electric field polarization for efficient photodegradation of high-concentration ethyl acetate: Mechanisms and reaction pathways","authors":"Jianghua Huang, Jiafeng Wei, Fengyuan Tian, Fukun Bi, Renzhi Rao, Yuxin Wang, Hengcong Tao, Ning Liu, Xiaodong Zhang","doi":"10.1016/j.mtchem.2024.102292","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102292","url":null,"abstract":"Volatile organic compounds (VOCs) posed a significant threat to the sustainability of ecosystems and human health, and photocatalytic oxidation technology emerged as one of the promising strategies. In this work, N-doped TiO composites were prepared by ball milling utilized melamine as a precursor for the photodegradation of high-concentration ethyl acetate under visible light. The electric field polarization effect of TiO facilitated the exposure of active sites, promoting separation and migration of photogenerated carriers. DFT calculations further demonstrated that N–TiO possessed better electron transition capabilities and stronger pollutant adsorption abilities. Notably, the optimized N–TiO (9-N-P25) exhibited an ethyl acetate removal rate of up to 98.8 % (2000 ppm) under visible light irradiation, and the speed constant k values (0.09488 min) was 2.66 folds higher than that of pure TiO (0.03571 min). The ·O and ·OH free radicals played major roles in the photodegradation process, and the interaction mechanism between free radicals and pollutant molecules was analyzed through in-situ infrared. Additionally, the mechanism of photocatalytic degradation of ethyl acetate by N–TiO was further elucidated. This work provided new insights into the semiconductor photodegradation of high-concentration VOCs, offering novel pathways for removing VOCs in the atmospheric environment.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"41 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1016/j.mtchem.2024.102282
K Theyagarajan, Buddolla Anantha Lakshmi, Chaehyun Kim, Young-Joon Kim
A cost-effective and low-potential smartphone-compatible electrochemical sensor was constructed using a nanohybrid for the sensing of glucose in human and animal serum. The nanohybrid composed of gold nanoparticle (GNP) decorated cobalt hexacyanoferrate (CHCF) modified ZIF-67 (cobalt metal organic framework, CMOF) was synthesized and characterized by FTIR, XRD, and SEM with EDX analysis. The electrochemical characteristics of the nanohybrid were investigated by depositing the nanohybrid over a conventional glassy carbon electrode (GCE) and performing cyclic voltammetry, which revealed a stable redox peak with a formal potential of +0.23 V, corresponding to Co redox couple in GNP–CHCF–CMOF. Thus, developed sensor was utilized for the electrochemical glucose detection, which showed exceptional electrocatalytic activity over a linear detection range from 8.33 to 3793 μM with a low detection limit of 0.96 μM at a low potential of +0.35 V. Furthermore, the GNP–CHCF–CMOF/GCE sensor was employed for the detection of glucose spiked in human and rabbit serum samples, which showed excellent recoveries. A portable measurement device was fabricated which showed the real-time monitoring of glucose in a smartphone. This novel approach paves the way for the design and fabrication of cost-effective, low-potential sensors, which would reduce overall costs and enhance the performance of sensing devices.
{"title":"A nanohybrid-based smartphone-compatible high performance electrochemical glucose sensor","authors":"K Theyagarajan, Buddolla Anantha Lakshmi, Chaehyun Kim, Young-Joon Kim","doi":"10.1016/j.mtchem.2024.102282","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102282","url":null,"abstract":"A cost-effective and low-potential smartphone-compatible electrochemical sensor was constructed using a nanohybrid for the sensing of glucose in human and animal serum. The nanohybrid composed of gold nanoparticle (GNP) decorated cobalt hexacyanoferrate (CHCF) modified ZIF-67 (cobalt metal organic framework, CMOF) was synthesized and characterized by FTIR, XRD, and SEM with EDX analysis. The electrochemical characteristics of the nanohybrid were investigated by depositing the nanohybrid over a conventional glassy carbon electrode (GCE) and performing cyclic voltammetry, which revealed a stable redox peak with a formal potential of +0.23 V, corresponding to Co redox couple in GNP–CHCF–CMOF. Thus, developed sensor was utilized for the electrochemical glucose detection, which showed exceptional electrocatalytic activity over a linear detection range from 8.33 to 3793 μM with a low detection limit of 0.96 μM at a low potential of +0.35 V. Furthermore, the GNP–CHCF–CMOF/GCE sensor was employed for the detection of glucose spiked in human and rabbit serum samples, which showed excellent recoveries. A portable measurement device was fabricated which showed the real-time monitoring of glucose in a smartphone. This novel approach paves the way for the design and fabrication of cost-effective, low-potential sensors, which would reduce overall costs and enhance the performance of sensing devices.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"50 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1016/j.mtchem.2024.102270
Jian Gou, Yousong Hu, Luxin Xing, Jun Xu, Fengzhi Yue, Lina Zhang, Lei Jia
Traditional luminescent materials for anti-counterfeiting usually adopt encryption of low-level systems with limited security, which seriously hinders their application in preventing counterfeiting and information leakage. Therefore, it is urgent to develop materials for higher-level anti-counterfeiting. In this work, a stimulus-responsive intelligent luminescent material (AC@CDs-Eu-MOFs) was prepared by co-loading green-fluorescence CDs and red-fluorescence Eu-MOFs on Amino clay (AC). 5D security barcodes, which were easy to observe while difficult to clone, were ulteriorly designed based on the nanocomposite owing to the tunable fluorescence by optical stimulation and chemical stimulus. Owing to the large capacity, low cost, and easy authentication, the 5D security barcodes possess enormous potential in optical data storage and multi-dimensional information encryption. In addition, the chemical stimulus-response enables the nanocomposite achievable in detection of Cu and Bacillus anthracis. Particularly, quantitative determination of copper in environmental water samples could be realized with a detection limit as low as 10.67 nM. Therefore, the material shows potential for detection of environmental pollutants besides advanced anti-counterfeiting.
传统的防伪发光材料通常采用低级系统加密，安全性有限，严重阻碍了其在防伪和防信息泄露方面的应用。因此，开发更高级别的防伪材料迫在眉睫。本研究通过在氨基粘土（AC）上共载绿色荧光 CD 和红色荧光 Eu-MOF，制备了一种刺激响应型智能发光材料（AC@CDs-Eu-MOFs）。由于该纳米复合材料在光学刺激和化学刺激下具有可调荧光的特性，因此在此基础上设计出了易于观察而难以克隆的 5D 防伪条形码。由于 5D 安全条形码容量大、成本低、易于验证，因此在光学数据存储和多维信息加密方面具有巨大潜力。此外，化学刺激-响应使纳米复合材料可用于铜和炭疽杆菌的检测。特别是，可以实现对环境水样中铜的定量检测，检测限低至 10.67 nM。因此，该材料除了具有先进的防伪功能外，还具有检测环境污染物的潜力。
{"title":"A multi-dimensional anti-counterfeiting nanocomposite based on fluorescent CDs and Eu-MOFs with dual function for continuous detection of Cu2+ and Bacillus anthracis","authors":"Jian Gou, Yousong Hu, Luxin Xing, Jun Xu, Fengzhi Yue, Lina Zhang, Lei Jia","doi":"10.1016/j.mtchem.2024.102270","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102270","url":null,"abstract":"Traditional luminescent materials for anti-counterfeiting usually adopt encryption of low-level systems with limited security, which seriously hinders their application in preventing counterfeiting and information leakage. Therefore, it is urgent to develop materials for higher-level anti-counterfeiting. In this work, a stimulus-responsive intelligent luminescent material (AC@CDs-Eu-MOFs) was prepared by co-loading green-fluorescence CDs and red-fluorescence Eu-MOFs on Amino clay (AC). 5D security barcodes, which were easy to observe while difficult to clone, were ulteriorly designed based on the nanocomposite owing to the tunable fluorescence by optical stimulation and chemical stimulus. Owing to the large capacity, low cost, and easy authentication, the 5D security barcodes possess enormous potential in optical data storage and multi-dimensional information encryption. In addition, the chemical stimulus-response enables the nanocomposite achievable in detection of Cu and Bacillus anthracis. Particularly, quantitative determination of copper in environmental water samples could be realized with a detection limit as low as 10.67 nM. Therefore, the material shows potential for detection of environmental pollutants besides advanced anti-counterfeiting.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"9 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-04DOI: 10.1016/j.mtchem.2024.102289
Meng Du, Jiakang Shi, Pengbiao Geng, Wenfeng Zhou, Xiaoxing Zhang, Songtao Zhang, Huan Pang
Lithium-sulfur (Li–S) batteries have been regarded as be one of the most promising energy storage systems on account of its high theoretical energy and power density. Nevertheless, it is limited by the severe shuttle effect of lithium polysulfides (LiPS) and retarded sulfur reaction kinetics. Herein, a thermal migration route was used to design nitrogen/sulfur co-doped MXene@FeCoNiP (N,S-MXene@FeCoNiP) composites as a promising catalyst for Li–S batteries. The prepared N,S-MXene@FeCoNiP possessing three-dimensional framework can promote rapid electron/ion transfer during battery cycling. The nitrogen/sulfur co-doping could not only improve electronic conductivity, but also provide more catalytic sites. Moreover, the synergy of highly polar MXene and FeCoNiP as well as N/S co-doping can hinder the shuttling of polysulfides and facilitate the LiPS conversion. Benefiting from these advantages, N,S-MXene@FeCoNiP–S cathode showed high specific capacity, remarkable rate capability and good cycling stability. This work is expected to provide inspiration for the reasonable design of catalysts toward advanced Li–S batteries.
{"title":"Nitrogen and sulfur co-doped MXene@FeCoNiP as an efficient catalyst for enhanced lithium-sulfur batteries","authors":"Meng Du, Jiakang Shi, Pengbiao Geng, Wenfeng Zhou, Xiaoxing Zhang, Songtao Zhang, Huan Pang","doi":"10.1016/j.mtchem.2024.102289","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102289","url":null,"abstract":"Lithium-sulfur (Li–S) batteries have been regarded as be one of the most promising energy storage systems on account of its high theoretical energy and power density. Nevertheless, it is limited by the severe shuttle effect of lithium polysulfides (LiPS) and retarded sulfur reaction kinetics. Herein, a thermal migration route was used to design nitrogen/sulfur co-doped MXene@FeCoNiP (N,S-MXene@FeCoNiP) composites as a promising catalyst for Li–S batteries. The prepared N,S-MXene@FeCoNiP possessing three-dimensional framework can promote rapid electron/ion transfer during battery cycling. The nitrogen/sulfur co-doping could not only improve electronic conductivity, but also provide more catalytic sites. Moreover, the synergy of highly polar MXene and FeCoNiP as well as N/S co-doping can hinder the shuttling of polysulfides and facilitate the LiPS conversion. Benefiting from these advantages, N,S-MXene@FeCoNiP–S cathode showed high specific capacity, remarkable rate capability and good cycling stability. This work is expected to provide inspiration for the reasonable design of catalysts toward advanced Li–S batteries.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"10 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multimodal luminescent materials have shown important applications in anti-counterfeiting and information encryption, however, mostly difficult to adjust optical properties with the structure, which leads to relatively constant emission position and less selectable excitation wavelength. Herein, Ce and Mn co-doped MgAlSiO phosphors are designed for the applications in RGB-tricolor multimodal anti-counterfeiting. Due to site occupancies, energy transfer and different thermal behaviors of Ce and Mn emissions, the emitting color of MgAlSiO: Ce, Mn is rich and tunable with different excitation wavelengths, doping concentrations and temperatures. The site occupancies of Ce and Mn are clarified with crystal field analysis and in-depth into transitions energies of Ce and Mn. The energy transfer mechanism between Ce and Mn is analyzed via Inokuti-Hirayama model. The difference of thermal stabilities of Ce and Mn emissions is interpreted with construction of vacuum referred binding energy scheme. The as-designed molds of information encryption and decryption with MgAlSiO: Ce, Mn phosphors demonstrate the potential applications in anti-counterfeiting. The work provides an effective way for exploring Ce and Mn doped phosphors with RBG-tricolor multimodal luminescence.
多模态发光材料在防伪和信息加密领域具有重要的应用前景，但其光学性质大多难以随结构调整，导致发射位置相对固定，激发波长可选择性较差。本文设计了掺杂铈和锰的 MgAlSiO 荧光粉，用于 RGB 三色多模态防伪。由于铈和锰的位点占位、能量传递和不同的热行为，MgAlSiO 荧光粉的发光颜色具有丰富的可调性：MgAlSiO：Ce、Mn 的发光颜色丰富，并可在不同的激发波长、掺杂浓度和温度下进行调谐。通过晶场分析澄清了 Ce 和 Mn 的位点占有率，并深入研究了 Ce 和 Mn 的跃迁能量。通过 Inokuti-Hirayama 模型分析了 Ce 和 Mn 之间的能量传递机制。通过构建真空结合能方案，解释了 Ce 和 Mn 辐射热稳定性的差异。用 MgAlSiO：Ce、Mn 荧光粉设计的信息加密和解密模具展示了在防伪领域的潜在应用。这项研究为探索具有 RBG 三色多模式发光的掺铈和锰荧光粉提供了有效途径。
{"title":"RGB-tricolor multimodal luminescence of Ce3+ and Mn2+ in Mg2Al4Si5O18 via site occupancy engineering for anticounterfeiting applications","authors":"Rongfu Zhou, Dexiu Hua, Bomei Liu, MingSheng Guo, Quanfeng Li, Jingwei Li, Tingting Deng, Jianbang Zhou","doi":"10.1016/j.mtchem.2024.102287","DOIUrl":"https://doi.org/10.1016/j.mtchem.2024.102287","url":null,"abstract":"Multimodal luminescent materials have shown important applications in anti-counterfeiting and information encryption, however, mostly difficult to adjust optical properties with the structure, which leads to relatively constant emission position and less selectable excitation wavelength. Herein, Ce and Mn co-doped MgAlSiO phosphors are designed for the applications in RGB-tricolor multimodal anti-counterfeiting. Due to site occupancies, energy transfer and different thermal behaviors of Ce and Mn emissions, the emitting color of MgAlSiO: Ce, Mn is rich and tunable with different excitation wavelengths, doping concentrations and temperatures. The site occupancies of Ce and Mn are clarified with crystal field analysis and in-depth into transitions energies of Ce and Mn. The energy transfer mechanism between Ce and Mn is analyzed via Inokuti-Hirayama model. The difference of thermal stabilities of Ce and Mn emissions is interpreted with construction of vacuum referred binding energy scheme. The as-designed molds of information encryption and decryption with MgAlSiO: Ce, Mn phosphors demonstrate the potential applications in anti-counterfeiting. The work provides an effective way for exploring Ce and Mn doped phosphors with RBG-tricolor multimodal luminescence.","PeriodicalId":18353,"journal":{"name":"Materials Today Chemistry","volume":"59 1","pages":""},"PeriodicalIF":7.3,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142204462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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