ACS Applied Nano Materials最新文献

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Interplay of Ion-Conduction and Nanoscale Self-Assembly in Amphiphilic Janus-Type Hexa-peri-hexabenzocoronenes 离子传导与纳米级自组装在两亲性 Janus 型六-全-六苯并呋喃中的相互作用
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02204
Svenja Weigold, Marianna Spyridakou, Ioannis Tzourtzouklis, Jan Freudenberg, Uwe H. F. Bunz, Klaus Müllen, George Floudas
{"title":"Interplay of Ion-Conduction and Nanoscale Self-Assembly in Amphiphilic Janus-Type Hexa-peri-hexabenzocoronenes","authors":"Svenja Weigold, Marianna Spyridakou, Ioannis Tzourtzouklis, Jan Freudenberg, Uwe H. F. Bunz, Klaus Müllen, George Floudas","doi":"10.1021/acsanm.4c02204","DOIUrl":"https://doi.org/10.1021/acsanm.4c02204","url":null,"abstract":"Ionic discotic liquid crystals combine ion conduction with fluid, yet ordered, liquid crystal phases at ambient temperature, making them suitable nanomaterials for ion transport and energy storage. A series of Janus-type hexa-<i>peri</i>-hexabenzocoronenes (HBCs) with ionic (sulfonate) groups covalently bonded to the HBC core, and tetraalkylammonium counterions (sizes from 0.15 to 0.95 nm) are synthesized and investigated with respect to the self-assembly and ion dynamics. We find that the counterion size affects the nanoscale self-assembly and ionic conductivity in opposite ways. Smaller counterions act as structure <i>formers</i>, whereas larger ones act as structure <i>breakers</i>. The latter exhibits the highest ion dc-conductivity. We quantify the effect of Coulomb interactions on the self-assembly, the glass temperature <i>T</i><sub>g</sub> (which was found to vary by 30 K), and the dc-conductivity (varying by 4 orders of magnitude). The precise synthesis of tailor-made ionic discotic liquid crystals with the HBC core and the characterization of their physical properties revealed that ion-conduction and nanoscale self-assembly in HBCs can be modulated by tuning electrostatic interactions, e.g., by adjusting the size of counterions.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Catalytic Nano-Gold Immobilized on the Inner Surfaces of Halloysite Nanotubes for Selective Reduction of Nitroaromatics 固定在霍洛石纳米管内表面的催化纳米金用于选择性还原硝基芳烃
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02731
Hui Lin, Yandong Liu, Chenglong Hu, Xuefan Deng, Long Zhang, Shaoyun Chen, Haibo Zhang
{"title":"Catalytic Nano-Gold Immobilized on the Inner Surfaces of Halloysite Nanotubes for Selective Reduction of Nitroaromatics","authors":"Hui Lin, Yandong Liu, Chenglong Hu, Xuefan Deng, Long Zhang, Shaoyun Chen, Haibo Zhang","doi":"10.1021/acsanm.4c02731","DOIUrl":"https://doi.org/10.1021/acsanm.4c02731","url":null,"abstract":"In catalytic reactions, the diverse binding sites of nanometals located in nanomaterials considerably influence the activity of nanocatalysts. In this study, the special nanostructure and charge distribution of halloysite nanotubes (HNTs) incorporating a weak reducing agent <i>closo</i>-dodecaborate (<i>closo</i>-[B<sub>12</sub>H<sub>12</sub>]<sup>2–</sup>) were leveraged to immobilize Au nanoparticles (NPs) on the inner and outer surfaces of HNTs. The introduction of <i>closo</i>-[B<sub>12</sub>H<sub>12</sub>]<sup>2–</sup> into HNTs was achieved via vacuum extraction and acid immersion. Subsequently, nanocatalysts loaded with Au NPs on the diverse surfaces of the HNTs were obtained from a direct reaction with a KAuCl<sub>4</sub> solution. The Au NPs loaded on the inner surface of the HNTs were found to have highly dispersed and exhibited excellent catalytic activity in the reduction of nitroaromatics. At room temperature, the Au NPs loaded on the inner surface of the HNTs with a mass fraction of 0.02% showed a high turnover frequency value of 47.28 min<sup>–1</sup> in a model reaction of the catalytic reduction of 4-nitrophenol to 4-aminophenol and exhibited excellent stability in cycling tests. Therefore, this study provides a new approach for synthesizing nanocomposites for various practical applications.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
3D Lithiophilic Host Comprising Co2P Nanosheets and ZnO Nanorods for Stable Li Metal Anode 用于稳定锂金属负极的由 Co2P 纳米片和 ZnO 纳米棒组成的三维亲锂载体
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02105
Pengwei Li, Ding Ding, Xiaoguang Fu, Qingchi Xu, Jun Xu
{"title":"3D Lithiophilic Host Comprising Co2P Nanosheets and ZnO Nanorods for Stable Li Metal Anode","authors":"Pengwei Li, Ding Ding, Xiaoguang Fu, Qingchi Xu, Jun Xu","doi":"10.1021/acsanm.4c02105","DOIUrl":"https://doi.org/10.1021/acsanm.4c02105","url":null,"abstract":"Within the domain of lithium metal batteries (LMBs), the integration of three-dimensional (3D) composite lithium metal anodes emerges as a critical strategy to combat dendrite growth. However, traditional challenges such as poor lithophilicity of 3D hosts and nonuniform charge distribution from imbalanced ion/electron transport typically undermine electrochemical performance. Herein, we present a 3D lithiophilic host comprising Co<sub>2</sub>P nanosheets and ZnO nanorods for stable Li metal anode. The 3D configuration of carbon cloth drastically reduces local current density during lithium deposition, while nanoscale lithophilic ZnO bestows 3D framework with sufficient lithophilic sites, thereby substantially lowering the energy barrier for lithium nucleation. The Co<sub>2</sub>P nanosheets interact with Li to form uniformly distributed Co nanoparticles within the Li<sub>3</sub>P phase, which is replete with ionic and electronic pathways. This Li<sub>3</sub>P interphase, characterized by high Li<sup>+</sup> conductivity, effectively lowers the Li<sup>+</sup> diffusion barrier. Simultaneously, the uniformly distributed electron-conductive cobalt domains help ensure a well-distributed current density, promoting an even distribution of Li<sup>+</sup> flux at the interface. Consequently, such a lithium anode evidences superior interface kinetics and extended cycling stability. Additionally, full cells outfitted with LiFePO<sub>4</sub> (LFP) cathodes demonstrate marked enhancements in both rate performance and cycling stability. This breakthrough marks a notable advance toward the realization of a stable lithium anode for high-energy-density LMBs.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Highly Flexible Hydrogels with Readily Adjustable Electromagnetic Parameter for Efficient Electromagnetic Wave Absorption 具有可随时调节电磁参数的高柔性水凝胶可高效吸收电磁波
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02498
Mengtian Jiang, Shan Wang, Pan Xu, Tiantian Shang, Yuru Jiang, Yuqi Liu, Xigui Yue
{"title":"Highly Flexible Hydrogels with Readily Adjustable Electromagnetic Parameter for Efficient Electromagnetic Wave Absorption","authors":"Mengtian Jiang, Shan Wang, Pan Xu, Tiantian Shang, Yuru Jiang, Yuqi Liu, Xigui Yue","doi":"10.1021/acsanm.4c02498","DOIUrl":"https://doi.org/10.1021/acsanm.4c02498","url":null,"abstract":"In the past, hard electromagnetic wave (EMW) absorbing materials have made breakthroughs in performance improvement, but poor machinability limits their practical applications. Herein, a series of flexible borate ester bonded hydrogels with different water content for EMW absorption were prepared through a simple ultraviolet curing method. By adjusting the water content, the EMW absorption performance of hydrogel can be improved. When the water content reaches 30%, the minimum reflection loss (RL<sub>min</sub>) of the hydrogel can be up to −48.70 dB at 1.89 mm and the widest effective absorption bandwidth (EAB<sub>w</sub>, RL ≤ −10 dB) is 5.60 GHz (covering the entire Ku band) when the matching thickness is between 2.09 and 2.17 mm. The efficient absorption performance of the hydrogel benefits from the dipole polarization of water molecules and the interfacial polarization caused by interaction with the polymer network framework under the changing electromagnetic field. In addition, tensile and compressive experiments show that the hydrogel possesses favorable flexibility. This study provides an idea for the preparation of flexible electromagnetic attenuation devices, and the as-synthesized hydrogels have a broad application scenario in the field of wearable EMW-absorbing materials.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Machine Learning Prediction and Classification of Transmission Functions for Rapid DNA Sequencing in a Hybrid Nanopore 用于混合纳米孔中快速 DNA 测序的传输函数的机器学习预测与分类
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c03685
Souptik Pandit, Milan Kumar Jena, Sneha Mittal, Biswarup Pathak
{"title":"Machine Learning Prediction and Classification of Transmission Functions for Rapid DNA Sequencing in a Hybrid Nanopore","authors":"Souptik Pandit, Milan Kumar Jena, Sneha Mittal, Biswarup Pathak","doi":"10.1021/acsanm.4c03685","DOIUrl":"https://doi.org/10.1021/acsanm.4c03685","url":null,"abstract":"Electrical DNA sequencing using solid-state nanopores has emerged as a promising technology due to its potential to achieve high-precision single-base resolution. However, uncontrollable nucleotide translocation, low signal-to-noise ratios, and electrical signal overlapping from nucleotide stochastic motion have been major limitations. Recent fabrication of in-plane hybrid heterostructures of 2D materials has triggered active research in sequencing applications due to their interesting electrical properties. Herein, our study explores both machine learning (ML) regression and a classification framework for single DNA nucleotide identification with hybrid graphene/hexagonal boron nitride (G/h-BN) nanopores using a quantum transport approach. The optimized ML model predicted each nucleotide at its most stable configuration with the lowest root-mean-squared error of 0.07. We have also examined the impact of three locally polarized hybrid nanopore environments (C<sup>δ−</sup>–H<sup>δ+</sup>, N<sup>δ−</sup>–H<sup>δ+</sup>, and B<sup>δ+</sup>–H<sup>δ−</sup>) on ML prediction of transmission functions utilizing structural, chemical, and electrical environmental descriptors. The random forest algorithm demonstrates notable classification accuracy across quaternary (∼86%), ternary (∼95%), and binary (∼98%) combinations of four nucleotides. Further, we checked the applicability of the hybrid nanopore device with conductance sensitivity and Frontier molecular orbital analysis. Our study showcases the potential of a hybrid nanopore with the ML-combined quantum transport method as a promising sequencing platform that paves the way for advancements in solid-state nanopore sequencing technologies.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Hydrophobic Nitrogen-Doped Nanocarbon with Cu–Ni Alloy Sites as a Catalyst for CO2 Electroreduction 具有铜镍合金位点的疏水性氮掺杂纳米碳作为二氧化碳电还原催化剂
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02196
Xian Cao, Yanna Hu, Di Hui, Kai Zhang, Shichao Chen, Lingzhi Wei, Chun Ye, Guoxing Pan, Lin Hu
{"title":"Hydrophobic Nitrogen-Doped Nanocarbon with Cu–Ni Alloy Sites as a Catalyst for CO2 Electroreduction","authors":"Xian Cao, Yanna Hu, Di Hui, Kai Zhang, Shichao Chen, Lingzhi Wei, Chun Ye, Guoxing Pan, Lin Hu","doi":"10.1021/acsanm.4c02196","DOIUrl":"https://doi.org/10.1021/acsanm.4c02196","url":null,"abstract":"The electrochemical reduction of CO<sub>2</sub> to value-added fuels or chemicals is considered one of the most appealing routes to establish an artificial carbon cycle. In this regard, the design of catalysts with high activity and selectivity in a wide potential window is pursued. Herein, the Cu–Ni alloy/nitrogen-doped nanocarbon (Cu–Ni/NC) with hydrophobicity is synthesized for the electrochemical CO<sub>2</sub> reduction reaction (CO<sub>2</sub>RR) through the thermal decomposition of metal–organic frameworks. In the H-cell, the Cu–Ni/NC displays superior selectivity toward CO with a Faradaic efficiency (FE) over 90% in a wide potential window from −0.7 to −1.2 V versus the reversible hydrogen electrode (RHE). Further, a high FE<sub>CO</sub> of 98.8% and an impressive CO partial current density (<i>j</i><sub>CO</sub>) of 27.6 mA cm<sup>–2</sup> were achieved at −1.1 V, superior to those of their single metal counterparts. The enhanced CO selectivity may be related to the hydrophobicity, which can suppress the competitive hydrogen evolution reaction. Moreover, in situ ATR-SEIRAS and density functional theory (DFT) calculations reveal that the synergistic effects via intermetal interaction on Cu–Ni(111) surface can facilitate the proton-coupled electron transfer process, and then well balance the formation of COOH* and the CO* desorption.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
High-Performance Wearable Piezoresistive Sensor with a Wide Temperature Range via a Ti3C2Tx MXene/Au Dual-Layer Conductive Network and Microspike Structure 通过 Ti3C2Tx MXene/Au 双层导电网络和微穗状结构实现宽温度范围的高性能可穿戴压阻传感器
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c03060
Ning Yang, Xiangyu Yin, Hailian Liu, Xue Zhou, Xin Yan, Yong Zhao, Tonglei Cheng
{"title":"High-Performance Wearable Piezoresistive Sensor with a Wide Temperature Range via a Ti3C2Tx MXene/Au Dual-Layer Conductive Network and Microspike Structure","authors":"Ning Yang, Xiangyu Yin, Hailian Liu, Xue Zhou, Xin Yan, Yong Zhao, Tonglei Cheng","doi":"10.1021/acsanm.4c03060","DOIUrl":"https://doi.org/10.1021/acsanm.4c03060","url":null,"abstract":"Currently, with the increasing popularity of wearable electronic devices, there is growing demand for the performance and application scenarios of flexible pressure sensors. However, effectively balancing a sensor’s sensitivity and sensing range over a wide temperature range remains an urgent challenge. In this paper, a simple and economical template transfer method was used to prepare microspike structures with random distributions, while a dual-layer conductive network was constructed using Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXene (two-dimensional transition metal carbides and nitrides) and gold nanoparticles (Au). The working mechanism of the piezoresistive sensor was systematically analyzed. The special surface microstructure and the synergistic effect between the double-layer conductive network enabled the sensor to acquire high sensitivity (497.08 kPa<sup>–1</sup>) over a wide sensing range (&gt;1000 kPa) and maintain stability for working even at high temperatures (&gt;400 °C). In addition, the obtained piezoresistive sensor had a short response time and relaxation time, good linearity, a low detection limit, and good fatigue resistance. Furthermore, we demonstrated the application of this sensor in table tennis and electronic sports (eSports) scenarios, showing its bright prospect in human motion pattern recognition. Its insensitivity to temperature also showed great potential for the development of wearable electronic products that can work stably in harsh environments.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Carrier Depletion-Induced Suppression of Solid Electrolyte Interphase and Conversion Reaction in Zn1–xMgxO Nanocrystal Solid Solution Li-Ion Batteries 载流子耗竭抑制 Zn1-xMgxO 纳米晶固溶体锂离子电池中的固态电解质相间和转换反应
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c00791
Young-Jun Kim, Byoung-Nam Park
{"title":"Carrier Depletion-Induced Suppression of Solid Electrolyte Interphase and Conversion Reaction in Zn1–xMgxO Nanocrystal Solid Solution Li-Ion Batteries","authors":"Young-Jun Kim, Byoung-Nam Park","doi":"10.1021/acsanm.4c00791","DOIUrl":"https://doi.org/10.1021/acsanm.4c00791","url":null,"abstract":"In this study, we investigated the effects of charge carrier depletion on the formation of the solid-electrolyte interphase (SEI) followed by conversion reaction involving alloying/dealloying reactions during the cycling of Li-ion batteries. In our investigation, Zn<sub>1–<i>x</i></sub>Mg<sub><i>x</i></sub>O nanocrystal solid solutions were used as the anode, focusing on a range where <i>x</i> varied between 0.05 and 0.15. We observed that a significant decrease in electrical conductivity occurred at <i>x</i> = 0.15, accompanied by a marked decrease in field-effect transistor (FET) mobility and carrier concentration. Consequently, both SEI formation and the conversion reaction were suppressed in the initial discharge process, resulting in a specific capacity significantly lower than that of ZnO (<i>x</i> = 0). Our findings revealed that the Zn<sub>0.85</sub>Mg<sub>0.15</sub>O sample exhibits a strong depletion of surface charge carriers by trapping compared to ZnO and Zn<sub>0.95</sub>Mg<sub>0.05</sub>O. This was demonstrated by ultraviolet (UV)-induced (FET) and photoluminescence (PL) measurements. Since the processes of Li-ion alloying, ZnO reduction, and SEI formation are influenced by trap-induced surface carrier depletion, controlling these traps could enhance the energy density of Li-ion batteries. This advancement holds particular significance for high-demand applications, such as electric vehicles and grid storage systems.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Expanding Laser-Induced Graphene and Polydimethylsiloxane Microstructure Flexible Sensor: Innovative Design and Application Research Inspired by Fingerprint 扩展激光诱导石墨烯和聚二甲基硅氧烷微结构柔性传感器:受指纹启发的创新设计与应用研究
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-10 DOI: 10.1021/acsanm.4c02821
Jian-Yu Yan, Chun-Li Luo, Xuan Wu, Lin-Xin Zheng, Wei Zhao, Nan Geng, Dong-Zhou Zhong, Wei-Guo Yan
{"title":"Expanding Laser-Induced Graphene and Polydimethylsiloxane Microstructure Flexible Sensor: Innovative Design and Application Research Inspired by Fingerprint","authors":"Jian-Yu Yan, Chun-Li Luo, Xuan Wu, Lin-Xin Zheng, Wei Zhao, Nan Geng, Dong-Zhou Zhong, Wei-Guo Yan","doi":"10.1021/acsanm.4c02821","DOIUrl":"https://doi.org/10.1021/acsanm.4c02821","url":null,"abstract":"In recent years, wearable flexible sensors have garnered significant attention for their potential in monitoring human physiological signals. Current research focuses on flexible sensors with a wide linear range, high sensitivity, and excellent reliability. Micronanostructures have been introduced to balance these three features to some extent. Inspired by the micronanostructures of human fingerprints, we propose a fingerprint-like flexible sensor that combines polydimethylsiloxane with a grating structure and laser-induced graphene. This fingerprint-like flexible sensor exhibits several desirable characteristics: a wider linear range (0–180°), faster response time (0.3 s), higher sensitivity (688.5 kPa<sup>–1</sup>), and excellent reliability (&gt;10,000 cycles). These features make fingerprint-like flexible sensors particularly suitable for detecting various human physiological signals, including finger flexion, elbow flexion, finger pressure, and pulse. Therefore, there is considerable potential for integrating multiple fingerprint-like sensors into human physiological signal monitoring applications. This approach offers a promising direction for the future development of wearable flexible sensors.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Asphalt-Derived Carbon Nanostructures for Glucose/O2 Biofuel Cells 用于葡萄糖/氧气生物燃料电池的沥青衍生碳纳米结构
IF 5.9 2区 材料科学
ACS Applied Nano Materials Pub Date : 2024-07-09 DOI: 10.1021/acsanm.4c02443
Yuxia Zhang, Hongfen Deng, Yan Zheng, Xiaoyi Zheng, Zhe He, Chen Li, Zhi Li, Zhixiong Liu, Yucan Zhu, Liang Chen, Gangyong Li
{"title":"Asphalt-Derived Carbon Nanostructures for Glucose/O2 Biofuel Cells","authors":"Yuxia Zhang, Hongfen Deng, Yan Zheng, Xiaoyi Zheng, Zhe He, Chen Li, Zhi Li, Zhixiong Liu, Yucan Zhu, Liang Chen, Gangyong Li","doi":"10.1021/acsanm.4c02443","DOIUrl":"https://doi.org/10.1021/acsanm.4c02443","url":null,"abstract":"The electrode materials play extremely important roles in building the interfacial electron communications between the active sites of enzymes and the electrode surface, which significantly affect the performance of an enzymatic biofuel cell (EBFC). Herein, defective porous carbon is rationally designed and prepared using asphalt as the low-cost and high-carbon-yield precursor via a facile catalytic pyrolysis and NH<sub>3</sub>-etching process. The obtained defective asphalt-derived carbon (D-ADC) is utilized as the electrode material to immobilize enzymes and mediators in EBFC applications. It is found that the morphology and structure of ADC can be regulated by the catalytic pyrolysis and NH<sub>3</sub>-etching processes, which greatly increase the electroactive sites and specific surface area, thus enhancing the catalytic reaction kinetics. Specifically, the fabricated EBFC using D-ADC as the electrode material exhibits an open circuit voltage of 0.58 V and delivers a maximum output power density of 0.32 mW cm<sup>–2</sup> with a short circuit current density of 1.12 mA cm<sup>–2</sup>, comparable to those using conventional graphene and carbon nanotubes. This work offers guidance for the design of functional carbon materials in the application of EBFCs, which has the potential to improve the sustainability and economic efficiency of waste asphalt.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
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