ACS Applied Nano Materials最新文献_第3页

Cu2S/MoS2 Nanospheres on Conductive Molecule Modified Reduced Graphene Oxide for Supercapacitors 用于超级电容器的导电分子修饰还原石墨烯氧化物上的 Cu2S/MoS2 纳米球

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c02585

Hezeng Xu, Yiheng Zhang, Fuguang Liu, Zhihan Yang, Jiangtao Xu, Jingquan Liu

{"title":"Cu2S/MoS2 Nanospheres on Conductive Molecule Modified Reduced Graphene Oxide for Supercapacitors","authors":"Hezeng Xu, Yiheng Zhang, Fuguang Liu, Zhihan Yang, Jiangtao Xu, Jingquan Liu","doi":"10.1021/acsanm.4c02585","DOIUrl":"https://doi.org/10.1021/acsanm.4c02585","url":null,"abstract":"MoS2 has an attractive two-dimensional (2D) flake structure, which provides a large surface area and high inherent fast ionic conductivity for double-layer charge storage; thus, it is a promising electrode material. However, 2D materials often suffer from the problem of easy stacking, which greatly weakens the inherent advantages of materials. Designing MoS2 into flower morphology with a large specific surface area and combining it with graphene are feasible methods to solve the stacking drawback of MoS2 nanosheets for practical applications. The conductive molecule’s (CM) phenyl group and pyrene group form an angle of 33.2°, which is used to obliquely support the graphene layer to obtain graphene compounds with a larger specific surface area. Then Cu2S/MoS2 nanospheres are generated on the surface of the modified material to afford Cu2S/MoS2@CM@rGO. Here, we designed and constructed Cu2S/MoS2@CM@rGO composite as electrode materials for a battery-type supercapacitor. An ASC device assembled with Cu2S/MoS2@CM@rGO with AC (active carbon) shows a power density of 981.8 W kg–1 under 36.9 Wh kg–1 energy density. Significantly, a tiny light bulb can be kept lit for 3 min when two solid-state ASCs are coupled in series, which demonstrates the high potential of Cu2S/MoS2@CM@rGO for use in energy storage.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267693","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

Magnetic Self-Assembled Fe3O4 Colloidal Nanocrystals in Structural Color Hydrogels for Environmental Humidity Monitoring 用于环境湿度监测的结构色水凝胶中的磁性自组装 Fe3O4 胶体纳米晶体

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-19 DOI: 10.1021/acsanm.4c0348610.1021/acsanm.4c03486

Juanjuan Sun, Jingyan Liu, Jialing Tan, Hao Liu, Jiru Jia* and Chaoxia Wang*,

{"title":"Magnetic Self-Assembled Fe3O4 Colloidal Nanocrystals in Structural Color Hydrogels for Environmental Humidity Monitoring","authors":"Juanjuan Sun, Jingyan Liu, Jialing Tan, Hao Liu, Jiru Jia* and Chaoxia Wang*, ","doi":"10.1021/acsanm.4c0348610.1021/acsanm.4c03486","DOIUrl":"https://doi.org/10.1021/acsanm.4c03486https://doi.org/10.1021/acsanm.4c03486","url":null,"abstract":"The structural color hydrogel has attracted considerable attention due to its unique color-changing ability in response to external stimuli. It is committed to exploring possibilities in the fields of sensing, display, and anticounterfeiting and enhancing its functionality to achieve practical applications. In this study, structural color hydrogels are synthesized through the concurrent polymerization of Fe3O4 colloidal nanocrystals and gel monomers under an external magnetic field. In the presence of an external magnetic field, Fe3O4 colloidal nanocrystals rapidly assemble into 1D chain structures, creating structural colors. The hydrogel matrix stabilizes the one-dimensional chain structures, preserving the structural colors even after the external magnetic field is removed. As environmental humidity changes, the hydrogel absorbs water, expanding in volume and increasing the spacing between Fe3O4 colloidal nanocrystals, which results in a red shift. By adjusting the relative humidity (from 11% to 97%), the structural color hydrogel undergoes expansion, altering the distance between Fe3O4 colloidal nanocrystals, resulting in a color change from green to red, and the diffraction peak shifts from 494 to 720 nm, spanning a significant variation range of 226 nm, achieving humidity responsiveness. These findings will pave the way for the designing of desirable environmental humidity monitoring applicable in optical equipment, sensors, displays, etc.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326072","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

Antibacterial Finishing of Compression Garment Fabric Based on Ti3C2Tx–Chitosan–APTES Material 基于 Ti3C2Tx-Citosan-APTES 材料的压缩服装面料抗菌整理

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c02832

Lihuan Zhao, Yanyan Li, Yuwen Wang, Changjing Li, Yulong Chen, Mingzhu Yuan

{"title":"Antibacterial Finishing of Compression Garment Fabric Based on Ti3C2Tx–Chitosan–APTES Material","authors":"Lihuan Zhao, Yanyan Li, Yuwen Wang, Changjing Li, Yulong Chen, Mingzhu Yuan","doi":"10.1021/acsanm.4c02832","DOIUrl":"https://doi.org/10.1021/acsanm.4c02832","url":null,"abstract":"Wearing a compression garment (CG) can effectively prevent and treat hypertrophic scars (HS), but the surface of CG is prone to bacterial growth. Therefore, it is particularly important to carry out antibacterial finishing on compression garment fabric (CGF). In order to achieve the purpose of synergistic antibacterial action, improving bacteriostatic rate, and enhancing biological safety, this study prepared a composite material of MXene (Ti3C2Tx), chitosan, and amino silane coupling agent (3-aminopropyl)triethoxysilane (APTES) and its antibacterial CGF. The binding mechanism between the antibacterial composite material and the CGF was explored, and the bacteriostatic rates, wearing properties, and wash fastness of the antibacterial CGF were studied. Results showed that Ti3C2Tx, chitosan, and APTES were covalently bonded to the CGF, achieving synergistic antibacterial effects. The antibacterial CGF without washing showed a bacteriostatic rate of 99.9% against both Gram-negative bacteria Esherichia coli (E. coli, AATCC 6538) and Gram-positive bacteria Staphylococcus aureus (S. aureus, AATCC 25922), with washing fastness reaching grade AA. Additionally, the comfort of the antibacterial finishing fabric was affected to a certain extent in terms of flexural rigidity and air permeability, but overall, the wearability of the antibacterial CGF also met the daily wearing needs of patients.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269648","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

Ligand-to-Metal Charge Transfer Quenching of Carbon Dots for Highly Selective Hg2+ Detection in Microfluidic Devices 用于微流控设备中高选择性 Hg2+ 检测的碳点配体-金属电荷转移淬灭技术

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c0470010.1021/acsanm.4c04700

Rongzhen Ma, Lin Chang, Long D. Nghiem, Yuan Liu, Qilin Wang, Qianbin Zhao, Qingju Hao, Yimeng Gao, Hong Liu and Lei Zheng*,

{"title":"Ligand-to-Metal Charge Transfer Quenching of Carbon Dots for Highly Selective Hg2+ Detection in Microfluidic Devices","authors":"Rongzhen Ma, Lin Chang, Long D. Nghiem, Yuan Liu, Qilin Wang, Qianbin Zhao, Qingju Hao, Yimeng Gao, Hong Liu and Lei Zheng*, ","doi":"10.1021/acsanm.4c0470010.1021/acsanm.4c04700","DOIUrl":"https://doi.org/10.1021/acsanm.4c04700https://doi.org/10.1021/acsanm.4c04700","url":null,"abstract":"Carbon dots have emerged as highly efficient and versatile fluorescent probes for detecting and quantifying Hg2+. This study reports a method to prepare nitrogen-doped carbon dots (N-CDs) via ligand-to-metal charge transfer fluorescent quenching for Hg2+ detection. Besides the excitation-independent emission feature, the synthesized N-CDs demonstrate a high selectivity of Hg2+ over 23 potentially interfering environmental ions. The structures of 2-hydroxy-N,N-dimethylbenzamide and amide functional groups are identified as the determinants of the relatively high quantum yield (53.33%). N-CDs also exhibit a linear relationship with Hg2+ concentration in the range of 0.007–120 μM, with a limit of detection of 7.1 nM. The produced N-CDs can be employed in a customized microfluidic real-time monitoring platform, demonstrating the robustness in receiving efficient fluorescence signals with a satisfactory limit of detection. The acceptable accuracy and recovery of Hg2+ detection in tap water and river water highlight the potential practical applications of the synthesized N-CDs. Results in this study can facilitate the development of a portable device for early warning of water pollution.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326247","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

Site-Specific Growth of Ag Islands on Concave Au Nanocubes for SERS and LSPR-Based Applications 在凹金纳米立方体上生长特定位点的银岛，用于 SERS 和基于 LSPR 的应用

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c04013

Zhiwei Wang, Yefan Zhou, Junsheng Wang, Yun Wang, Jianwei Zhao, Wenjia Xu, Yuhua Feng

{"title":"Site-Specific Growth of Ag Islands on Concave Au Nanocubes for SERS and LSPR-Based Applications","authors":"Zhiwei Wang, Yefan Zhou, Junsheng Wang, Yun Wang, Jianwei Zhao, Wenjia Xu, Yuhua Feng","doi":"10.1021/acsanm.4c04013","DOIUrl":"https://doi.org/10.1021/acsanm.4c04013","url":null,"abstract":"Currently, hybrid noble metal nanostructures have garnered significant interest due to their exceptional properties and diverse applications in fields such as catalysis, energy conversion, plasmonic sensing, and surface-enhanced Raman scattering (SERS). In this work, we report the highly site-specific growth of a single Ag island on both the concave face and the sharp tip of concave Au nanocube (c-AuNC) seeds, resulting in different c-AuNC-Ag Janus heterostructures. This site specificity was achieved by combining the surface curvature effect of the c-AuNCs with strong ligand-mediated interfacial energy control. Further integration of interfacial energy and growth kinetic control led to the formation of c-AuNC-(Ag)n core–satellite structures with varying numbers of Ag satellites. Benefiting from the continuous tunability of the interfacial energy and growth kinetics, the structural evolution of the c-AuNC-Ag hybrid structures continuously occurred, enabling precise control of the Au–Ag bimetallic structures. Notably, the resulting c-AuNC-Ag structures showed tunable intense localized surface plasmon resonance (LSPR) absorptions within the 400–1000 nm wavelength along with strong SERS signals. The broad spectral absorption and strong SERS made the c-AuNC-Ag structures promising candidates for SERS and LSPR-based applications, including sensing, imaging, light energy harvesting, and conversion. Moreover, the effective synthetic control demonstrated in this work could facilitate the development of advanced hybrid metal nanomaterials with valuable properties, further broadening their application potential across various fields.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267501","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

Synthesis of Type-S Ni3S4/ZnCdS Quantum Dots via Constitution Controller l-Cysteine for Photocatalytic H2 Evolution 通过构成控制器 l-半胱氨酸合成用于光催化 H2 蒸发的 S 型 Ni3S4/ZnCdS 量子点

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c0405810.1021/acsanm.4c04058

Haiyan Yang*, Changqing Li, Mingfan Mao, Houxiang Sun*, Xuejun Zhu, Yi Zhang, Yulong Li and Zhiqiang Jiang*,

{"title":"Synthesis of Type-S Ni3S4/ZnCdS Quantum Dots via Constitution Controller l-Cysteine for Photocatalytic H2 Evolution","authors":"Haiyan Yang*, Changqing Li, Mingfan Mao, Houxiang Sun*, Xuejun Zhu, Yi Zhang, Yulong Li and Zhiqiang Jiang*, ","doi":"10.1021/acsanm.4c0405810.1021/acsanm.4c04058","DOIUrl":"https://doi.org/10.1021/acsanm.4c04058https://doi.org/10.1021/acsanm.4c04058","url":null,"abstract":"Designing and synthesizing highly efficient hydrogen-producing catalysts using morphological control techniques and path structure layouts based on photogenerated electron migration can effectively address environmental pollution and promote clean energy development. However, exploitating stabilized photocatalysts with exceptional photocatalytic performance remains challenging. Herein, Ni3S4/ZnCdS quantum dots (NZCS QDs) were synthesized at room temperature for high-efficiency photocatalytic H2 production. l-Cysteine (l-Cys) as constitution controller controlled the composition of the NZCS QDs by limiting their growth, and the photogenerated electrons of the cocatalyst Ni3S4 rapidly captured the photogenerated holes of ZCS QDs. This process resulted in a significant increase in the H2 evolution rate of NZCS QDs up to 5.03 mmol·g–1·h–1, which was 8.98 times greater than that of CdS QDs. The experimental findings indicated that the increased rate of H2 production was primarily attributed to the higher number of active sites, faster type-S photogenerated electron–hole separation driven by an internal electric field, and enhanced charge reaction efficiency of the NZCS QDs. This study presents a credible synthetic approach for NZCS QDs and offers a solution to improve the efficiency of photocatalytic reactions based on ZnCdS.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326065","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

Site-Specific Growth of Ag Islands on Concave Au Nanocubes for SERS and LSPR-Based Applications 在凹金纳米立方体上生长特定位点的银岛，用于 SERS 和基于 LSPR 的应用

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c0401310.1021/acsanm.4c04013

Zhiwei Wang, Yefan Zhou, Junsheng Wang, Yun Wang, Jianwei Zhao, Wenjia Xu* and Yuhua Feng*,

{"title":"Site-Specific Growth of Ag Islands on Concave Au Nanocubes for SERS and LSPR-Based Applications","authors":"Zhiwei Wang, Yefan Zhou, Junsheng Wang, Yun Wang, Jianwei Zhao, Wenjia Xu* and Yuhua Feng*, ","doi":"10.1021/acsanm.4c0401310.1021/acsanm.4c04013","DOIUrl":"https://doi.org/10.1021/acsanm.4c04013https://doi.org/10.1021/acsanm.4c04013","url":null,"abstract":"Currently, hybrid noble metal nanostructures have garnered significant interest due to their exceptional properties and diverse applications in fields such as catalysis, energy conversion, plasmonic sensing, and surface-enhanced Raman scattering (SERS). In this work, we report the highly site-specific growth of a single Ag island on both the concave face and the sharp tip of concave Au nanocube (c-AuNC) seeds, resulting in different c-AuNC-Ag Janus heterostructures. This site specificity was achieved by combining the surface curvature effect of the c-AuNCs with strong ligand-mediated interfacial energy control. Further integration of interfacial energy and growth kinetic control led to the formation of c-AuNC-(Ag)n core–satellite structures with varying numbers of Ag satellites. Benefiting from the continuous tunability of the interfacial energy and growth kinetics, the structural evolution of the c-AuNC-Ag hybrid structures continuously occurred, enabling precise control of the Au–Ag bimetallic structures. Notably, the resulting c-AuNC-Ag structures showed tunable intense localized surface plasmon resonance (LSPR) absorptions within the 400–1000 nm wavelength along with strong SERS signals. The broad spectral absorption and strong SERS made the c-AuNC-Ag structures promising candidates for SERS and LSPR-based applications, including sensing, imaging, light energy harvesting, and conversion. Moreover, the effective synthetic control demonstrated in this work could facilitate the development of advanced hybrid metal nanomaterials with valuable properties, further broadening their application potential across various fields.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326066","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

Liquid Metal-Enhanced PVA-ANF/MXene Hydrogels for Electromagnetic Shielding and Sensing 用于电磁屏蔽和传感的液态金属增强型 PVA-ANF/MXene 水凝胶

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c0423010.1021/acsanm.4c04230

Mengxia Shen*, Chanjuan Liang, Xinyu Xu, Jiale Qi, Jiaojiao Sun, Liguo Yang, Liangjiao Xie and Xiaojie Li,

{"title":"Liquid Metal-Enhanced PVA-ANF/MXene Hydrogels for Electromagnetic Shielding and Sensing","authors":"Mengxia Shen*, Chanjuan Liang, Xinyu Xu, Jiale Qi, Jiaojiao Sun, Liguo Yang, Liangjiao Xie and Xiaojie Li, ","doi":"10.1021/acsanm.4c0423010.1021/acsanm.4c04230","DOIUrl":"https://doi.org/10.1021/acsanm.4c04230https://doi.org/10.1021/acsanm.4c04230","url":null,"abstract":"With the further advancement of communication technology and wearable devices, it is imperative to develop multifunctional electromagnetic shielding materials. In this context, we propose a feasible approach to construct liquid metal-enhanced poly(vinyl alcohol) (PVA)-aramid nanofiber (ANF)/MXene hydrogels for electromagnetic shielding and sensing. By leveraging the excellent conductivity of MXene nanosheets, we successfully prepared three-dimensional flexible PVA-ANF/MXene@Ga hydrogels (PAMG) through the three-dimensional network structure of PVA hydrogels and the mechanical reinforcement of ANFs. With the phenomenon of charge polarization relaxation, multiple interfaces are formed among MXene@Ga, ANFs, and PVA, thus enhancing the mechanical properties and electromagnetic shielding efficiency of the hydrogels. The PAMG hydrogels exhibit an electromagnetic shielding effectiveness of 35.7 dB and a higher water retention capability (with water retention exceeding 60% after 28 days). Furthermore, the hydrogels demonstrate outstanding sensing performance and exhibit high stability for a wide range of human motion detection signals. The research findings indicate that the MXene nanosheet-based electromagnetic shielding hydrogel holds great potential as an ideal platform for multifunctional electromagnetic shielding materials.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326307","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

Iron Hexadecafluorophthalocyanine Nanoparticle/Porous Carbon Composites as Cathode Materials for Li–S Batteries 作为锂-S 电池阴极材料的十六氟酞菁铁纳米粒子/多孔碳复合材料

IF 5.9 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c04071

Zhanwei Xu, Hang Niu, Ying Zhang, Siyu Chen, Wenyang Li, Jiayin Li, Liang Li, Xuetao Shen

{"title":"Iron Hexadecafluorophthalocyanine Nanoparticle/Porous Carbon Composites as Cathode Materials for Li–S Batteries","authors":"Zhanwei Xu, Hang Niu, Ying Zhang, Siyu Chen, Wenyang Li, Jiayin Li, Liang Li, Xuetao Shen","doi":"10.1021/acsanm.4c04071","DOIUrl":"https://doi.org/10.1021/acsanm.4c04071","url":null,"abstract":"The shuttle behavior and sluggish conversion kinetics of polysulfides (LiPSs) significantly hinder sulfur utilization and cycle stability of lithium–sulfur (Li–S) batteries. Herein, iron hexadecafluorophthalocyanine (FePcF16) nanoparticles were in situ tailored on oxidized apple pomace carbon (OAPC) with a 3D porous structure to construct a high-performance FePcF16/OAPC sulfur host for advanced Li–S batteries. The designed FePcF16 nanoparticles have strong adsorption and catalytic conversion capabilities, which can reduce the redox reaction energy barrier, accelerate the conversion rate, and inhibit the LiPS shuttle. Meanwhile, the unique porous structure of OAPC effectively realizes the sulfur accommodation and rapid transport of substances. The average capacities of batteries with FePcF16/OAPC were 926.83, 847.11, and 782.63 mA h/g after 500 cycles at 1, 2, and 3C current densities, with capacity decay rates of only 0.020%, 0.031%, and 0.043% per cycle, respectively. Furthermore, it delivers favorable cycling stability at a sulfur load of 4.32 mg/cm2.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.9,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267500","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

Atomic-Level Dispersed Pt on Vulcan Carbon Black Prepared by Electron Beam Irradiation as a Catalyst for the Hydrogen Evolution Reaction 电子束辐照制备的火山炭黑上的原子级分散铂作为氢气进化反应的催化剂

IF 5.3 2区材料科学

ACS Applied Nano Materials Pub Date : 2024-09-18 DOI: 10.1021/acsanm.4c0404910.1021/acsanm.4c04049

Jie Gan, Shaokang Jiang, Liang Fu, Ying Chang, Jianbing Chen, Maojiang Zhang* and Guozhong Wu*,

{"title":"Atomic-Level Dispersed Pt on Vulcan Carbon Black Prepared by Electron Beam Irradiation as a Catalyst for the Hydrogen Evolution Reaction","authors":"Jie Gan, Shaokang Jiang, Liang Fu, Ying Chang, Jianbing Chen, Maojiang Zhang* and Guozhong Wu*, ","doi":"10.1021/acsanm.4c0404910.1021/acsanm.4c04049","DOIUrl":"https://doi.org/10.1021/acsanm.4c04049https://doi.org/10.1021/acsanm.4c04049","url":null,"abstract":"Pursuing and developing elegant and general approaches for the large-scale production of atomic-level dispersed Pt catalysts are attractive for effective hydrogen production via water electrolysis. Herein, we propose an eco-friendly, cost-efficient, and scalable strategy by combining incipient wetness impregnation with electron beam irradiation to synthesize atomic-level dispersed 8 wt % Pt anchored on a carbon support. The Pt4+ ions are efficiently reduced in situ to Pt2+ while simultaneously inducing surface groups on the carbon support. The excellent catalytic performance for the Pt-catalyzed hydrogen evolution reaction (HER) has been demonstrated on the basis of electrochemical tests, kinetic analyses, and the Tafel mechanism. We clarified the influence of absorbed dose on the active site number, surface functional groups, defect levels, electronic structure, and local environment of the catalysts. At the optimal dose of 100 kGy, one can attain the utmost level of Pt2+ content and generate a greater abundance of oxygen-containing functional groups on the carbon support, resulting in 4.5 times higher HER activity than the commercial 20% Pt/C. This work provides a scientific paradigm to design and develop atomically dispersed precious metal catalysts for efficient and scalable electrolytic water splitting.","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142326251","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