Pub Date : 2022-04-01DOI: 10.1016/j.futures.2022.102949
Kanang Kanatamaturapoj, Steven R. McGreevy, Natapol Thongplew, Motoki Akitsu, J. Vervoort, A. Mangnus, Kazuhiko Ota, Christoph D. D. Rupprecht, Norie Tamura, Maximillian Spiegelberg, Mai Kobayashi, S. Pongkijvorasin, S. Wibulpolprasert
{"title":"Constructing practice-oriented futures for sustainable urban food policy in Bangkok","authors":"Kanang Kanatamaturapoj, Steven R. McGreevy, Natapol Thongplew, Motoki Akitsu, J. Vervoort, A. Mangnus, Kazuhiko Ota, Christoph D. D. Rupprecht, Norie Tamura, Maximillian Spiegelberg, Mai Kobayashi, S. Pongkijvorasin, S. Wibulpolprasert","doi":"10.1016/j.futures.2022.102949","DOIUrl":"https://doi.org/10.1016/j.futures.2022.102949","url":null,"abstract":"","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78827399","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}
Pub Date : 2022-04-01DOI: 10.1016/j.futures.2022.102939
E. Eriksson, Karl Hallding, K. Skånberg
{"title":"Ensuring representativity of scenario sets: the importance of exploring unknown unknowns","authors":"E. Eriksson, Karl Hallding, K. Skånberg","doi":"10.1016/j.futures.2022.102939","DOIUrl":"https://doi.org/10.1016/j.futures.2022.102939","url":null,"abstract":"","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77649154","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}
Pub Date : 2022-04-01DOI: 10.1016/j.futures.2022.102951
Joseph Kantenbacher, Deidra Miniard, Nathan Geiger, Landon Yoder, S. Attari
{"title":"Young adults face the future of the United States: perceptions of its promise, perils, and possibilities","authors":"Joseph Kantenbacher, Deidra Miniard, Nathan Geiger, Landon Yoder, S. Attari","doi":"10.1016/j.futures.2022.102951","DOIUrl":"https://doi.org/10.1016/j.futures.2022.102951","url":null,"abstract":"","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87871647","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}
Pub Date : 2022-03-31DOI: 10.1088/2399-1984/ac62e6
Manman Liu, Yue Ma, Xiaofeng Fan, D. J. Singh, W. Zheng
Graphdiyne (GDY)-based materials are carbon allotropes with a two-dimensional (2D) planar structure composed of diacetylene bonds (sp) and sp 2 hybridized carbons. Their unique geometrical and electronic structure give them excellent electrochemical properties. The larger specific surface area and ion-diffusion channels in pores can provide more storage sites for alkali metal ions and increase the diffusion rate of electrons and ions. Hence, GDY-based materials possess broad prospects in electrochemical energy storage and have gained more favor as anode materials for alkali ion batteries. Here, we have made a systematic summary of GDY-based materials and their derivatives, including the geometrical and electronic structures, synthesis, modifications, and storage mechanisms of Li+/Na+/K+, along with the applications in Li+/Na+/K+ batteries. In view of the current situation, the large-scale application of GDY-based materials as anodes in alkali ion batteries is still a great challenge. We hope that this work can provide a theoretical basis for GDY-based materials with superior performance, more convenient and safer preparation, and higher yield.
{"title":"Progress of graphdiyne-based materials for anodes of alkali metal ion batteries","authors":"Manman Liu, Yue Ma, Xiaofeng Fan, D. J. Singh, W. Zheng","doi":"10.1088/2399-1984/ac62e6","DOIUrl":"https://doi.org/10.1088/2399-1984/ac62e6","url":null,"abstract":"Graphdiyne (GDY)-based materials are carbon allotropes with a two-dimensional (2D) planar structure composed of diacetylene bonds (sp) and sp 2 hybridized carbons. Their unique geometrical and electronic structure give them excellent electrochemical properties. The larger specific surface area and ion-diffusion channels in pores can provide more storage sites for alkali metal ions and increase the diffusion rate of electrons and ions. Hence, GDY-based materials possess broad prospects in electrochemical energy storage and have gained more favor as anode materials for alkali ion batteries. Here, we have made a systematic summary of GDY-based materials and their derivatives, including the geometrical and electronic structures, synthesis, modifications, and storage mechanisms of Li+/Na+/K+, along with the applications in Li+/Na+/K+ batteries. In view of the current situation, the large-scale application of GDY-based materials as anodes in alkali ion batteries is still a great challenge. We hope that this work can provide a theoretical basis for GDY-based materials with superior performance, more convenient and safer preparation, and higher yield.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46668926","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}
Pancreatic cancer is a malignant tumor with a high mortality rate. The rich stroma in tumor tissue is a major barrier to drug penetration and tumor killing. Cisplatin and cisplatin-based nano-delivery systems are widely used as chemotherapeutic agents. However, the side effects and the inability of permeating tumor tissue in depth have limited their application in the clinic. Hyaluronan is an important component of the extracellular matrix in the tumor tissue and has the potential to be targeted for tumor stroma degradation. Therefore, a nanocarrier-mediated cisplatin co-delivery system BPEI-SS-Pt/HAase@CaP consisting of hyaluronidase (HAase) and polymer-cisplatin conjugate BPEI-SS-Pt through disulfide bonding to branched polyethyleneimine (BPEI) was constructed. In the construction of the co-delivery system of BPEI-SS-Pt and HAase, amorphous calcium phosphate is introduced to obtain the tumor microenvironment responsive release of HAase. The particle size of optimized BPEI-SS-Pt/HAase@CaP nano-complexes is 143 ± 14 nm. In the tumor microenvironment, BPEI-SS-Pt/HAase@CaP nano-complexes were able to release HAase to degrade the hyaluronan in the tumor stroma. The results of histochemical and fluorescent labeling showed that hyaluronan was degraded in vivo by BPEI-SS-Pt/HAase@CaP and the nanocarrier-mediated BPEI-SS-Pt can be easily across the loosened stroma and penetrated the tumor tissue more deeply compared with BPEI-SS-Pt without loading HAase. When they were uptaken into tumor cells and responded to high glutathione in the intracellular environment to release cisplatin, more effective chemotherapy to pancreatic cancer was obtained. Compared with the free cisplatin or BPEI-SS-Pt group, BPEI-SS-Pt/HAase@CaP nano-complexes achieved the best antitumor effect in vivo, promising the future clinic use of cisplatin for effective chemotherapy to pancreatic cancer.
癌症是一种死亡率较高的恶性肿瘤。肿瘤组织中丰富的基质是药物渗透和肿瘤杀伤的主要屏障。基于顺铂和顺铂的纳米递送系统被广泛用作化疗剂。然而，副作用和不能深入渗透肿瘤组织限制了其在临床上的应用。透明质酸是肿瘤组织中细胞外基质的重要成分，有可能成为肿瘤基质降解的靶点。因此，纳米载体介导的顺铂共递送系统BPEI SS Pt/HAase@CaP构建了由透明质酸酶（HAase）和聚合物-顺铂偶联物BPEI-SS-Pt通过二硫键与支链聚乙烯亚胺（BPEI）形成的复合物。在BPEI SS Pt和HAase共递送系统的构建中，引入无定形磷酸钙以获得HAase的肿瘤微环境响应性释放。优化后的BPEI SS Pt的粒径/HAase@CaP纳米配合物为143±14nm。在肿瘤微环境中，BPEI SS Pt/HAase@CaP纳米复合物能够释放HAase以降解肿瘤基质中的透明质酸。组织化学和荧光标记结果表明，BPEI SS Pt在体内降解透明质酸/HAase@CaP并且与没有负载HAase的BPEI SS Pt相比，纳米载体介导的BPEI SS-Pt可以容易地穿过疏松的基质并更深入地穿透肿瘤组织。当它们被吸收到肿瘤细胞中，并在细胞内环境中对高谷胱甘肽产生反应以释放顺铂时，获得了对胰腺癌症更有效的化疗。与游离顺铂或BPEI SS Pt组相比/HAase@CaP纳米复合物在体内获得了最佳的抗肿瘤效果，有望在临床上应用顺铂对癌症进行有效的化疗。
{"title":"Construction of tumor microenvironment and redox responsive nanocarrier-mediated cisplatin co-delivery system for effective chemotherapy to pancreatic cancer","authors":"Zhou Jia, Hao Zhou, L. Hou, Fang Kou, Tang‐Rui Zhang, Baohua Wang, Wei Wang, Si-Yuan Zhou, Bang-le Zhang","doi":"10.1088/2399-1984/ac61f7","DOIUrl":"https://doi.org/10.1088/2399-1984/ac61f7","url":null,"abstract":"Pancreatic cancer is a malignant tumor with a high mortality rate. The rich stroma in tumor tissue is a major barrier to drug penetration and tumor killing. Cisplatin and cisplatin-based nano-delivery systems are widely used as chemotherapeutic agents. However, the side effects and the inability of permeating tumor tissue in depth have limited their application in the clinic. Hyaluronan is an important component of the extracellular matrix in the tumor tissue and has the potential to be targeted for tumor stroma degradation. Therefore, a nanocarrier-mediated cisplatin co-delivery system BPEI-SS-Pt/HAase@CaP consisting of hyaluronidase (HAase) and polymer-cisplatin conjugate BPEI-SS-Pt through disulfide bonding to branched polyethyleneimine (BPEI) was constructed. In the construction of the co-delivery system of BPEI-SS-Pt and HAase, amorphous calcium phosphate is introduced to obtain the tumor microenvironment responsive release of HAase. The particle size of optimized BPEI-SS-Pt/HAase@CaP nano-complexes is 143 ± 14 nm. In the tumor microenvironment, BPEI-SS-Pt/HAase@CaP nano-complexes were able to release HAase to degrade the hyaluronan in the tumor stroma. The results of histochemical and fluorescent labeling showed that hyaluronan was degraded in vivo by BPEI-SS-Pt/HAase@CaP and the nanocarrier-mediated BPEI-SS-Pt can be easily across the loosened stroma and penetrated the tumor tissue more deeply compared with BPEI-SS-Pt without loading HAase. When they were uptaken into tumor cells and responded to high glutathione in the intracellular environment to release cisplatin, more effective chemotherapy to pancreatic cancer was obtained. Compared with the free cisplatin or BPEI-SS-Pt group, BPEI-SS-Pt/HAase@CaP nano-complexes achieved the best antitumor effect in vivo, promising the future clinic use of cisplatin for effective chemotherapy to pancreatic cancer.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49366088","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}
Remarkable progress has been made in using electric circuits as a powerful platform to realize a plethora of exotic topological quantum states, even of higher orders and/or dimensions. So far the proposed circuits are restricted to a single-orbital tight-binding model with different lattices. Here, we introduce the concept of a multi-orbital topolectrical circuit and construct practical LC circuits to demonstrate its superiorities. As a proof of concept, we assemble two sets of inductors in one plaquette to simulate a (px, py )-orbital model within a two-dimensional hexagonal lattice. In the presence of spin–orbit coupling, as generated by mixing voltage degrees of freedom, a quantum spin Hall (QSH) state emerges with spin-resolved edge modes propagating along the boundary in the time domain. Implementation of negative impedance converters (NICs) with nonreciprocal links transforms the circuit into a quantum anomalous Hall (QAH) state. Remarkably, we demonstrate that QSH/QAH states can be reversibly switched by tuning the resistance of NIC, and an experimental observable-edge distance ratio is proposed to facilitate the phase transition detection. This work provides an exciting playground for exploring multi-orbital physics in topolectrical circuits, paving the way for future applications in nanoelectronics, telecommunications, signal processing and quantum computing.
{"title":"Multi-orbital topolectrical circuit for topological quantum states","authors":"Junjie Yao, Xiamin Hao, Biyu Song, Yizhen Jia, C. Hua, Miao Zhou","doi":"10.1088/2399-1984/ac5cd2","DOIUrl":"https://doi.org/10.1088/2399-1984/ac5cd2","url":null,"abstract":"Remarkable progress has been made in using electric circuits as a powerful platform to realize a plethora of exotic topological quantum states, even of higher orders and/or dimensions. So far the proposed circuits are restricted to a single-orbital tight-binding model with different lattices. Here, we introduce the concept of a multi-orbital topolectrical circuit and construct practical LC circuits to demonstrate its superiorities. As a proof of concept, we assemble two sets of inductors in one plaquette to simulate a (px, py )-orbital model within a two-dimensional hexagonal lattice. In the presence of spin–orbit coupling, as generated by mixing voltage degrees of freedom, a quantum spin Hall (QSH) state emerges with spin-resolved edge modes propagating along the boundary in the time domain. Implementation of negative impedance converters (NICs) with nonreciprocal links transforms the circuit into a quantum anomalous Hall (QAH) state. Remarkably, we demonstrate that QSH/QAH states can be reversibly switched by tuning the resistance of NIC, and an experimental observable-edge distance ratio is proposed to facilitate the phase transition detection. This work provides an exciting playground for exploring multi-orbital physics in topolectrical circuits, paving the way for future applications in nanoelectronics, telecommunications, signal processing and quantum computing.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48498805","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}
Pub Date : 2022-02-23DOI: 10.1088/2399-1984/ac57bc
Yi Wei, Qian Zhao, Hongwen Zhang, Le Zhou, W. Cai
Colloidal motors with cavity structure, which have advantages over solid motors in catalytic efficiency, cargo capacity and biocompatibility, are still expected. Here, we design and fabricate a type of truncated hollow sub-microsphere via organic colloidal template etching/heating and layer-by-layer isotropic deposition. The as-prepared truncated hollow sphere is of one circular open pore through the shell layer and built of Pt, Ag and Au shell layers from inside to outside. They are controllable in sphere diameter, circular open pore size and shell thickness, which depend on the template and deposition conditions. Further experiments have shown that the Ag sandwich layer and post-deposition ageing process are crucial to obtaining strong and complete truncated hollow sub-microspheres. Their formation is attributed to the template geometry and nearly isotropic deposition. Due to the catalytic Pt layer on the inner surface and the truncated hollow spherical structure, such Pt–Ag–Au hollow spheres are demonstrated to be chemically propelled colloidal motors, which can directionally move in H2O2-containing solutions. This study presents a controllable route for mass-fabricating heterogeneous multi-layer truncated hollow sub-microspheres, and provides a new type of chemically self-propelled colloidal motor.
{"title":"Fabrication of Pt–Ag–Au heterogeneous truncated hollow sub-microspheres for chemically self-propelled colloidal motors","authors":"Yi Wei, Qian Zhao, Hongwen Zhang, Le Zhou, W. Cai","doi":"10.1088/2399-1984/ac57bc","DOIUrl":"https://doi.org/10.1088/2399-1984/ac57bc","url":null,"abstract":"Colloidal motors with cavity structure, which have advantages over solid motors in catalytic efficiency, cargo capacity and biocompatibility, are still expected. Here, we design and fabricate a type of truncated hollow sub-microsphere via organic colloidal template etching/heating and layer-by-layer isotropic deposition. The as-prepared truncated hollow sphere is of one circular open pore through the shell layer and built of Pt, Ag and Au shell layers from inside to outside. They are controllable in sphere diameter, circular open pore size and shell thickness, which depend on the template and deposition conditions. Further experiments have shown that the Ag sandwich layer and post-deposition ageing process are crucial to obtaining strong and complete truncated hollow sub-microspheres. Their formation is attributed to the template geometry and nearly isotropic deposition. Due to the catalytic Pt layer on the inner surface and the truncated hollow spherical structure, such Pt–Ag–Au hollow spheres are demonstrated to be chemically propelled colloidal motors, which can directionally move in H2O2-containing solutions. This study presents a controllable route for mass-fabricating heterogeneous multi-layer truncated hollow sub-microspheres, and provides a new type of chemically self-propelled colloidal motor.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45524554","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}
Pub Date : 2022-02-23DOI: 10.1088/2399-1984/ac57f7
Sreehari Sreekumar, Nihilkumar Shah, J. Mondol, N. Hewitt, Supriya Chakrabarti
The evolution of nanofluids over the years has opened new research opportunities in the field of renewable energy. Research on the optical properties of nanofluids for application in direct absorption solar collectors (DASCs) is progressing at a burgeoning speed. In a DASC system, nanofluid with high optical absorptivity can convert the incident solar energy into the thermal energy of the fluid. The dispersed nanoparticles in the fluid act in the process through the phenomenon of absorption and scattering. Studies conducted on the optical property characterization of monocomponent nanofluids have become saturated. Moreover, the photothermal efficiency (PTE) of the nanofluid can be enhanced by using multicomponent nanofluids. Nanofluids prepared using varying materials, shapes and sizes of nanoparticles can tune the absorption spectra of the bulk fluid to improve the PTE. A hybrid nanocomposite can similarly enhance the absorptivity due to the synergy of materials present in the nanocomposite particle. In this review, a comprehensive survey on the synthesis and optical characterization of different monocomponent, blended and hybrid nanocomposite nanofluids has been performed.
{"title":"Broadband absorbing mono, blended and hybrid nanofluids for direct absorption solar collector: a comprehensive review","authors":"Sreehari Sreekumar, Nihilkumar Shah, J. Mondol, N. Hewitt, Supriya Chakrabarti","doi":"10.1088/2399-1984/ac57f7","DOIUrl":"https://doi.org/10.1088/2399-1984/ac57f7","url":null,"abstract":"The evolution of nanofluids over the years has opened new research opportunities in the field of renewable energy. Research on the optical properties of nanofluids for application in direct absorption solar collectors (DASCs) is progressing at a burgeoning speed. In a DASC system, nanofluid with high optical absorptivity can convert the incident solar energy into the thermal energy of the fluid. The dispersed nanoparticles in the fluid act in the process through the phenomenon of absorption and scattering. Studies conducted on the optical property characterization of monocomponent nanofluids have become saturated. Moreover, the photothermal efficiency (PTE) of the nanofluid can be enhanced by using multicomponent nanofluids. Nanofluids prepared using varying materials, shapes and sizes of nanoparticles can tune the absorption spectra of the bulk fluid to improve the PTE. A hybrid nanocomposite can similarly enhance the absorptivity due to the synergy of materials present in the nanocomposite particle. In this review, a comprehensive survey on the synthesis and optical characterization of different monocomponent, blended and hybrid nanocomposite nanofluids has been performed.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45536706","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}
Pub Date : 2022-01-26DOI: 10.1088/2399-1984/ac4f2a
Yuting Wang, Zemin Zhang, Mingxue Li
Two-dimensional transition metal dichalcogenides are regarded as the ideal hosts for zinc-ions. Herein, a facile hydrothermal method is proposed to fabricate the metallic phase (1T phase) MoS2/multi-walled carbon nanotube (MWCNT) hybrids serving as the cathode materials for zinc-ion batteries (ZIBs). By virtue of the exertion of phase engineering and the synergy between the 1T MoS2 nanosheets and MWCNT framework, the transfer kinetics of zinc-ions of the prepared hybrid are remarkably accelerated, leading to boosted electrochemical properties at both room temperature and low temperatures. The hybrid electrode delivers a high reversible capacity of 161.5 mAh g−1 after 100 cycles at 0.1 A g−1, and good cycling stability with a desired capacity retention of 84.6% over 500 cycles at 1 A g−1. Furthermore, its boosted capability of zinc-ion storage in a low-temperature atmosphere is revealed. This work not only provides an effective way to squeeze the values of phase engineering of MoS2 in ZIBs, but also reveals the great potential of MoS2-based composites in low-temperature energy storage devices.
二维过渡金属二硫族化合物被认为是锌离子的理想宿主。本文提出了一种简单的水热法制备金属相（1T相）MoS2/多壁碳纳米管（MWCNT）杂化物作为锌离子电池（ZIBs）的正极材料。由于相工程的应用以及1T MoS2纳米片和MWCNT骨架之间的协同作用，所制备的杂化物的锌离子转移动力学显著加快，从而在室温和低温下提高了电化学性能。在0.1 a g−1下进行100次循环后，混合电极可提供161.5 mAh g−1的高可逆容量，并具有良好的循环稳定性，在1 a g−2下进行500次循环后所需的容量保持率为84.6%。此外，还揭示了其在低温气氛中增强的锌离子存储能力。这项工作不仅为挤压ZIBs中MoS2的相工程价值提供了一种有效的方法，而且揭示了MoS2基复合材料在低温储能器件中的巨大潜力。
{"title":"One-pot synthesis of 1T MoS2/MWCNT hybrids for enhanced zinc-ion storage","authors":"Yuting Wang, Zemin Zhang, Mingxue Li","doi":"10.1088/2399-1984/ac4f2a","DOIUrl":"https://doi.org/10.1088/2399-1984/ac4f2a","url":null,"abstract":"Two-dimensional transition metal dichalcogenides are regarded as the ideal hosts for zinc-ions. Herein, a facile hydrothermal method is proposed to fabricate the metallic phase (1T phase) MoS2/multi-walled carbon nanotube (MWCNT) hybrids serving as the cathode materials for zinc-ion batteries (ZIBs). By virtue of the exertion of phase engineering and the synergy between the 1T MoS2 nanosheets and MWCNT framework, the transfer kinetics of zinc-ions of the prepared hybrid are remarkably accelerated, leading to boosted electrochemical properties at both room temperature and low temperatures. The hybrid electrode delivers a high reversible capacity of 161.5 mAh g−1 after 100 cycles at 0.1 A g−1, and good cycling stability with a desired capacity retention of 84.6% over 500 cycles at 1 A g−1. Furthermore, its boosted capability of zinc-ion storage in a low-temperature atmosphere is revealed. This work not only provides an effective way to squeeze the values of phase engineering of MoS2 in ZIBs, but also reveals the great potential of MoS2-based composites in low-temperature energy storage devices.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49618569","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}
Pub Date : 2022-01-24DOI: 10.1088/2399-1984/ac4e77
K. Boldt
Raman spectroscopy is a powerful method that gives insight into the atomic structure and composition of nanomaterials, but also allows to draw conclusions about their electronic properties. It is based on the inelastic scattering of light, which is able to excite phonons in the material. In the field of semiconductor nanocrystals, Raman spectroscopy has been employed to make significant contributions to the analysis of lattice distortion, interfaces, phase mixing, and defect formation. Yet, there is no clear consensus on how the electronic and crystal structure of the material interacts with the incident light to yield the observed spectra. This review gives a brief overview over the method. It then reviews the most important findings, current developments, and discusses the efforts to formulate a consistent model that allows to establish the method as a tool for structural analysis.
{"title":"Raman spectroscopy of colloidal semiconductor nanocrystals","authors":"K. Boldt","doi":"10.1088/2399-1984/ac4e77","DOIUrl":"https://doi.org/10.1088/2399-1984/ac4e77","url":null,"abstract":"Raman spectroscopy is a powerful method that gives insight into the atomic structure and composition of nanomaterials, but also allows to draw conclusions about their electronic properties. It is based on the inelastic scattering of light, which is able to excite phonons in the material. In the field of semiconductor nanocrystals, Raman spectroscopy has been employed to make significant contributions to the analysis of lattice distortion, interfaces, phase mixing, and defect formation. Yet, there is no clear consensus on how the electronic and crystal structure of the material interacts with the incident light to yield the observed spectra. This review gives a brief overview over the method. It then reviews the most important findings, current developments, and discusses the efforts to formulate a consistent model that allows to establish the method as a tool for structural analysis.","PeriodicalId":54222,"journal":{"name":"Nano Futures","volume":null,"pages":null},"PeriodicalIF":2.1,"publicationDate":"2022-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47530025","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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