51
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Solution-processed Molybdenum Oxide Hole Transport Layer Stabilizes Organic Solar Cells. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2873-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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52
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Balouch A, Jagirani MS, Alveroglu E, Lal S, Sirajuddin, Mahar AM, Mal D. Ultra-Fast Degradation of Thymol Blue Dye Under Microwave Irradiation Technique Using Alpha-orthorhombic Molybdenum Trioxide (α-MoO3) Colloidal Nanoparticles. J CLUST SCI 2022. [DOI: 10.1007/s10876-022-02381-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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53
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Insights of Fe2O3 and MoO3 Electrodes for Electrocatalytic CO2 Reduction in Aprotic Media. Int J Mol Sci 2022; 23:ijms232113367. [DOI: 10.3390/ijms232113367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/14/2022] [Accepted: 10/16/2022] [Indexed: 11/06/2022] Open
Abstract
Transition metal oxides (TMO) have been successfully used as electrocatalytically active materials for CO2 reduction in some studies. Because of the lack of understanding of the catalytic behavior of TMOs, electrochemical methods are used to investigate the CO2 reduction in thin-film nanostructured electrodes. In this context, nanostructured thin films of Fe2O3 and MoO3 in an aprotic medium of acetonitrile have been used to study the CO2 reduction reaction. In addition, a synergistic effect between CO2 and the TMO surface is observed. Faradic cathodic processes not only start at lower potentials than those reported with metal electrodes, but also an increase in capacitive currents is observed, which is directly related to an increase in oxygen vacancies. Finally, the results obtained show CO as a product of the reduction.
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54
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Zhou LF, Du T, Li JY, Wang YS, Gong H, Yang QR, Chen H, Luo WB, Wang JZ. A strategy for anode modification for future zinc-based battery application. MATERIALS HORIZONS 2022; 9:2722-2751. [PMID: 36196916 DOI: 10.1039/d2mh00973k] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In the past several years, rechargeable zinc batteries, featuring the merits of low cost, environmental friendliness, easy manufacturing, and enhanced safety, have, attracted much attention. Zinc (Zn) anodes for zinc metal batteries play an important role. In this review, the fundamental understanding of these batteries and modification strategies to deal with the problematic issues for Zn anodes, including dendrite growth, corrosion, and the hydrogen evolution phenomenon will be summarized. The practical application of Zn anodes can still lead to Zn dendrites, various side reactions, and serious safety risks. Therefore, metal-free anodes for "rocking chair" zinc ion batteries to replace Zn anodes are systemically reviewed. The performance and the zinc storage mechanism of metal-free anodes will be discussed. Subsequently, a "rocking chair" zinc ion battery prototype selected as a recent example is assessed to explore the merits and demerits of Zn anodes and metal-free anodes. To conclude, a perspective on the future of zinc metal batteries and "rocking chair" zinc ion batteries is presented. It is hoped that this review may provide for further improvement of commercial rechargeable zinc batteries.
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Affiliation(s)
- Li-Feng Zhou
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
- Institute for Superconducting & Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Tao Du
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
| | - Jia-Yang Li
- Institute for Superconducting & Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Yi-Song Wang
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
| | - He Gong
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
| | - Qiu-Ran Yang
- Institute for Superconducting & Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW, 2522, Australia.
| | - Hong Chen
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
| | - Wen-Bin Luo
- Section of Environmental Protection Key Laboratory of Eco-Industry, Institute for Energy Electrochemistry and Urban Mines Metallurgy, School of Metallurgy, Northeastern University, No. 11 Lane 3, Wenhua Road, Shenyang, China.
| | - Jia-Zhao Wang
- Institute for Superconducting & Electronic Materials (ISEM), University of Wollongong, Wollongong, NSW, 2522, Australia.
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55
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Sovizi S, Tosoni S, Szoszkiewicz R. MoS 2 oxidative etching caught in the act: formation of single (MoO 3) n molecules. NANOSCALE ADVANCES 2022; 4:4517-4525. [PMID: 36341303 PMCID: PMC9595104 DOI: 10.1039/d2na00374k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/27/2022] [Indexed: 06/16/2023]
Abstract
We report the presence of sub-nm MoO x clusters formed on basal planes of the 2H MoS2 crystals during thermal oxidative etching in air at a temperature of 370 °C. Using high resolution non-contact atomic force microscopy (AFM) we provide a histogram of their preferred heights. The AFM results combined with density functional theory (DFT) simulations show remarkably well that the MoO x clusters are predominantly single MoO3 molecules and their dimers at the sulfur vacancies. Additional Raman spectroscopy, and energy and wavelength dispersive X-ray spectroscopies as well as Kelvin probe AFM investigations confirmed the presence of the MoO3/MoO x species covering the MoS2 surface only sparsely. The X-ray absorption near edge spectroscopy data confirm the MoO3 stoichiometry. Taken together, our results show that oxidative etching and removal of Mo atoms at the atomic level follow predominantly via formation of single MoO3 molecules. Such findings confirm the previously only proposed oxidative etching stoichiometry.
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Affiliation(s)
- Saeed Sovizi
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw Żwirki I Wigury 101 02-089 Warsaw Poland
| | - Sergio Tosoni
- Dipartimento di Scienza dei materiali, Università di Milano-Bicocca via Roberto Cozzi 55 20125 Milan Italy
| | - Robert Szoszkiewicz
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw Żwirki I Wigury 101 02-089 Warsaw Poland
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56
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Zhou Z, Li X, Hu T, Xue B, Chen H, Ma L, Liang R, Tan C. Molybdenum‐Based Nanomaterials for Photothermal Cancer Therapy. ADVANCED NANOBIOMED RESEARCH 2022. [DOI: 10.1002/anbr.202200065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Zhan Zhou
- College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous Materials Luoyang Normal University Luoyang 471934 P.R. China
| | - Xiangqian Li
- School of Chemical and Environmental Engineering (Key Lab of Ecological Restoration in Hilly Areas) Pingdingshan University Pingdingshan 467000 P.R. China
| | - Tingting Hu
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 P.R. China
| | - Baoli Xue
- Luoyang Key Laboratory of Organic Functional Molecules College of Food and Drug Luoyang Normal University Luoyang 471934 P.R. China
- College of Biological and Pharmaceutical Sciences China Three Gorges University Yichang 443002 P.R. China
| | - Hong Chen
- Luoyang Key Laboratory of Organic Functional Molecules College of Food and Drug Luoyang Normal University Luoyang 471934 P.R. China
- College of Biological and Pharmaceutical Sciences China Three Gorges University Yichang 443002 P.R. China
| | - Lufang Ma
- College of Chemistry and Chemical Engineering Henan Key Laboratory of Function-Oriented Porous Materials Luoyang Normal University Luoyang 471934 P.R. China
| | - Ruizheng Liang
- State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 P.R. China
| | - Chaoliang Tan
- Center of Super-Diamond and Advanced Films (COSDAF) Department of Chemistry City University of Hong Kong Kowloon Hong Kong SAR 999077 P.R. China
- Department of Electrical Engineering City University of Hong Kong 83 Tat Chee Avenue Kowloon Hong Kong SAR 999077 P.R. China
- Shenzhen Research Institute City University of Hong Kong Shenzhen 518057 P.R. China
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57
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Electrosynthesis of polypyrrole-reinforced helical α-MoO3 microribbons for high-energy aqueous Al3+-ion pseudocapacitors. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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58
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Hu Y, Zhang BY, Haque F, Ren G, Ou JZ. Plasmonic metal oxides and their biological applications. MATERIALS HORIZONS 2022; 9:2288-2324. [PMID: 35770972 DOI: 10.1039/d2mh00263a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Metal oxides modified with dopants and defects are an emerging class of novel materials supporting the localized surface plasmon resonance across a wide range of optical wavelengths, which have attracted tremendous research interest particularly in biological applications in the past decade. Compared to conventional noble metal-based plasmonic materials, plasmonic metal oxides are particularly favored for their cost efficiency, flexible plasmonic properties, and improved biocompatibility, which can be important to accelerate their practical implementation. In this review, we first explicate the origin of plasmonics in dopant/defect-enabled metal oxides and their associated tunable localized surface plasmon resonance through the conventional Mie-Gans model. The research progress of dopant incorporation and defect generation in metal oxide hosts, including both in situ and ex situ approaches, is critically discussed. The implementation of plasmonic metal oxides in biological applications in terms of therapy, imaging, and sensing is summarized, in which the uniqueness of dopant/defect-driven plasmonics for inducing novel functionalities is particularly emphasized. This review may provide insightful guidance for developing next-generation plasmonic devices for human health monitoring, diagnosis and therapy.
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Affiliation(s)
- Yihong Hu
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
| | - Bao Yue Zhang
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
- School of Physics and Astronomy, Monash University, Clayton, Victoria 3800, Australia
| | - Farjana Haque
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
| | - Guanghui Ren
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
| | - Jian Zhen Ou
- School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia.
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
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59
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Alkallas FH, Ben Gouider Trabelsi A, Shkir M, AlFaify S. Enhanced Room Temperature Ammonia Gas Sensing Properties of Fe-Doped MoO 3 Thin Films Fabricated Using Nebulizer Spray Pyrolysis. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:2797. [PMID: 36014662 PMCID: PMC9414738 DOI: 10.3390/nano12162797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
MoO3 thin films are fabricated using nebulizer spray pyrolysis technique, which is doped with Fe at various concentrations of 1, 2, 3, and 4% for ammonia gas sensors application at room temperature. X-ray diffraction (XRD) study confirms the growth of the crystal by Fe doping up to 3%, nano rods shape morphology of the thin film samples observed by field emission scanning electron microscope (FESEM), reduction in bandgap is evidenced via UV-VIS spectrophotometer. Gas sensing study is performed using gas analyzing chamber attached with Keithley source meter. Since 3% Fe doped MoO3 sample displayed nano rods over the film surface which exhibits highest sensitivity of 38,500%, in a short period of raise and decay time 54 and 6 s. Our findings confirms that the 3% Fe doped MoO3 films suitability for ammonia gas sensing application.
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Affiliation(s)
- Fatemah H. Alkallas
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Amira Ben Gouider Trabelsi
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Mohd Shkir
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
- Department of Chemistry and University Centre for Research & Development, Chandigarh, University, Mohali 140413, Punjab, India
| | - Salem AlFaify
- Advanced Functional Materials & Optoelectronic Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia
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60
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Zhang C, Xie C, Gao Y, Tao X, Ding C, Fan F, Jiang HL. Charge Separation by Creating Band Bending in Metal-Organic Frameworks for Improved Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2022; 61:e202204108. [PMID: 35522460 DOI: 10.1002/anie.202204108] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Indexed: 11/09/2022]
Abstract
Metal-organic frameworks (MOFs) have been intensively studied as a class of semiconductor-like materials in photocatalysis. However, band bending, which plays a crucial role in semiconductor photocatalysis, has not yet been demonstrated in MOF photocatalysts. Herein, a representative MOF, MIL-125-NH2 , is integrated with the metal oxides (MoO3 and V2 O5 ) that feature appropriate work functions and energy levels to afford the corresponding MOF composites. Surface photovoltage results demonstrate band bending in the MOF composites, which gives rise to the built-in electric field of MIL-125-NH2 , boosting the charge separation. As a result, the MOF composites present 56 and 42 times higher activities, respectively, compared to the pristine MOF for photocatalytic H2 production. Upon depositing Pt onto the MOF, ∼6 times higher activity is achieved. This work illustrates band bending of MOFs for the first time, supporting their semiconductor-like nature, which would greatly promote MOF photocatalysis.
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Affiliation(s)
- Chenxi Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Chenfan Xie
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yuying Gao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, P. R. China
| | - Xiaoping Tao
- Research Initiative for Supra-Materials, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, 380-8553, Japan
| | - Chunmei Ding
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, P. R. China
| | - Fengtao Fan
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning, 116023, P. R. China
| | - Hai-Long Jiang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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61
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Xu T, Wang D, Li Z, Chen Z, Zhang J, Hu T, Zhang X, Shen L. Electrochemical Proton Storage: From Fundamental Understanding to Materials to Devices. NANO-MICRO LETTERS 2022; 14:126. [PMID: 35699769 PMCID: PMC9198198 DOI: 10.1007/s40820-022-00864-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 04/12/2022] [Indexed: 05/14/2023]
Abstract
Simultaneously improving the energy density and power density of electrochemical energy storage systems is the ultimate goal of electrochemical energy storage technology. An effective strategy to achieve this goal is to take advantage of the high capacity and rapid kinetics of electrochemical proton storage to break through the power limit of batteries and the energy limit of capacitors. This article aims to review the research progress on the physicochemical properties, electrochemical performance, and reaction mechanisms of electrode materials for electrochemical proton storage. According to the different charge storage mechanisms, the surface redox, intercalation, and conversion materials are classified and introduced in detail, where the influence of crystal water and other nanostructures on the migration kinetics of protons is clarified. Several reported advanced full cell devices are summarized to promote the commercialization of electrochemical proton storage. Finally, this review provides a framework for research directions of charge storage mechanism, basic principles of material structure design, construction strategies of full cell device, and goals of practical application for electrochemical proton storage.
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Affiliation(s)
- Tiezhu Xu
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Di Wang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Zhiwei Li
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Ziyang Chen
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Jinhui Zhang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Tingsong Hu
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China
| | - Xiaogang Zhang
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China.
| | - Laifa Shen
- Jiangsu Key Laboratory of Electrochemical Energy Storage Technologies, College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, People's Republic of China.
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62
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Wu Z, Shi P, Xing R, Xing Y, Ge Y, Wei L, Wang D, Zhao L, Yan S, Chen Y. Quasi-two-dimensional α-molybdenum oxide thin film prepared by magnetron sputtering for neuromorphic computing. RSC Adv 2022; 12:17706-17714. [PMID: 35765332 PMCID: PMC9199084 DOI: 10.1039/d2ra02652j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/09/2022] [Indexed: 11/21/2022] Open
Abstract
Two-dimensional (2D) layered materials have attracted intensive attention in recent years due to their rich physical properties, and shown great promise due to their low power consumption and high integration density in integrated electronics. However, mostly limited to mechanical exfoliation, large scale preparation of the 2D materials for application is still challenging. Herein, quasi-2D α-molybdenum oxide (α-MoO3) thin film with an area larger than 100 cm2 was fabricated by magnetron sputtering, which is compatible with modern semiconductor industry. An all-solid-state synaptic transistor based on this α-MoO3 thin film is designed and fabricated. Interestingly, by proton intercalation/deintercalation, the α-MoO3 channel shows a reversible conductance modulation of about four orders. Several indispensable synaptic behaviors, such as potentiation/depression and short-term/long-term plasticity, are successfully demonstrated in this synaptic device. In addition, multilevel data storage has been achieved. Supervised pattern recognition with high recognition accuracy is demonstrated in a three-layer artificial neural network constructed on this α-MoO3 based synaptic transistor. This work can pave the way for large scale production of the α-MoO3 thin film for practical application in intelligent devices.
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Affiliation(s)
- Zhenfa Wu
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Peng Shi
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Ruofei Xing
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Yuzhi Xing
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Yufeng Ge
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Lin Wei
- School of Microelectronics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Dong Wang
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Le Zhao
- School of Electronic and Information Engineering, Qilu University of Technology Jinan 250353 China
| | - Shishen Yan
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
| | - Yanxue Chen
- School of Physics, and State Key Laboratory of Crystal Materials, Shandong University Jinan 250100 China
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63
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Synthesis and Characterization of Highly Photocatalytic Active Ce and Cu Co-Doped Novel Spray Pyrolysis Developed MoO3 Films for Photocatalytic Degradation of Eosin-Y Dye. COATINGS 2022. [DOI: 10.3390/coatings12060823] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The current work deals with the fabrication of novel MoO3 nanostructured films with Ce and Cu co-doping through the spray pyrolysis route on a glass substrate maintained at 460 °C for the first time. The phase of developed films was approved by an X-ray diffraction study, and the crystallite size was determined between 82 and 92 nm. The optical transmission of the developed films was noticed to be reduced with doping and found between 45 and 90% for all films, and the absorption edge shifted to a higher wavelength with doping. The optical energy gap of the fabricated films was found to be reduced from 3.85 to 3.28 eV with doping. The developed films were used to degrade the harmful Eosin-Y dye under UV light. The system with 2% Ce and 1% Cu-doped MoO3 turned out to be the most effective catalyst for photodegradation of the dye in a period of 3H and almost degrade it. Hence, the MoO3 films prepared with 2% Ce and 1% Cu will be highly applicable as photocatalysts for the removal of hazardous dye from wastewater.
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64
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Mobtakeri S, Habashyani S, Gür E. Highly Responsive Pd-Decorated MoO 3 Nanowall H 2 Gas Sensors Obtained from In-Situ-Controlled Thermal Oxidation of Sputtered MoS 2 Films. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25741-25752. [PMID: 35608898 PMCID: PMC9185678 DOI: 10.1021/acsami.2c04804] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
Among transition metal oxides, MoO3 is a promising material due to its layered structure and different oxidation states, making it suitable for different device applications. One of the methods used to grow MoO3 is radio frequency magnetron sputtering (RFMS), which is the most compatible method in industry. However, obtaining nanostructures by RFMS for metal oxides is challenging because of compact morphology film formation. In this study, α-MoO3 with vertical nanowalls is obtained by a two-step process; deposition of magnetron-sputtered MoS2 vertical nanowalls and postoxidation of these structures without changing the morphology. In situ transmittance and electrical measurements are performed to control the oxidation process, which shed light on understanding the oxidation of MoS2 nanowalls. The transition from MoS2 to α-MoO3 is investigated with partially oxidized MoS2/MoO3 samples with different thicknesses. It is also concluded that oxidation starts from nanowalls perpendicular to the substrate and lasts with oxidation of basal planes. Four different thicknesses of α-MoO3 nanowall samples are fabricated for H2 gas sensors. Also, the effect of Pd deposition on the H2-sensing properties of sensors is deeply investigated. An outstanding response of 3.3 × 105 as well as the response and recovery times of 379 and 304 s, respectively, are achieved from the thinnest Pd-loaded sample. Also, the gas-sensing mechanism is explored by gasochromic measurements to investigate the sensor behaviors under the conditions of dry air and N2 gas as the carrier gas.
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Affiliation(s)
- Soheil Mobtakeri
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
| | - Saman Habashyani
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
| | - Emre Gür
- Department
of Nanoscience and Nanoengineering, Graduate School of Natural and
Applied Science, Atatürk University, Erzurum 25240, Turkey
- Department
of Physics, Faculty of Science, Ataturk
University, Erzurum 25250, Turkey
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65
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Hsu FH, Hsu SY, Chen BH, Chen JL, Chen JM, Lu KT. Correlation of the crystal structure and ion storage behavior of MoO 3 electrode materials for aluminum-ion energy storage studied using in situ X-ray spectroscopy. NANOSCALE 2022; 14:7502-7515. [PMID: 35467685 DOI: 10.1039/d2nr00182a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To characterize the correlation of the crystal structure and Al-ion storage behavior, we prepared various crystal structures of MoO3 (α-MoO3, β-MoO3 and h-MoO3) electrode materials and studied them via in situ X-ray absorption spectroscopy (XAS) and X-ray diffraction (XRD) techniques. The α-MoO3 electrode material possesses a specific capacitance of 575.4 F g-1 and a gravimetric capacity of 207.8 mA h g-1 at a current density of 1 A g-1. From the in situ XRD results, the crystal structures of α-MoO3 and β-MoO3 show a significant distortion, whereas that of h-MoO3 is minorly affected during the insertion or extraction of Al3+ ions. Based on the in situ XAS results, the MoO6 octahedral structure and Mo ion valence of α-MoO3 and β-MoO3 also exhibit a strong variation, whereas those of h-MoO3 are nearly unchanged during the insertion or extraction of Al3+ ions. Notably, in situ XRD and XAS also clearly show a possible phase of AlxMoO3 during the Al3+ insertion and extraction cycles in the α-MoO3 and β-MoO3 electrode materials, which may play a crucial role in the behavior of the residue of Al3+ ions and poor cycling stability. We provide clear evidence that the Al-ion energy storage performance of various MoO3 electrode materials is strongly associated with the corresponding tunnel space and the stability of their crystal structures. This work also provides new insight into a strong correlation between ion-storage efficiency and the corresponding crystal structure, which is greatly helpful for the development and improvement of new electrode materials for Al-ion energy storage.
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Affiliation(s)
- Feng Hao Hsu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Su Yang Hsu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Bo Hao Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Jeng Lung Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Jin Ming Chen
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
| | - Kueih Tzu Lu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan.
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66
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Tang Y, Zhong L, Wang W, He Y, Han T, Xu L, Mo X, Liu Z, Ma Y, Bao Y, Gan S, Niu L. Recent Advances in Wearable Potentiometric pH Sensors. MEMBRANES 2022; 12:504. [PMID: 35629830 PMCID: PMC9147059 DOI: 10.3390/membranes12050504] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/02/2022] [Accepted: 05/05/2022] [Indexed: 01/15/2023]
Abstract
Wearable sensors reflect the real-time physiological information and health status of individuals by continuously monitoring biochemical markers in biological fluids, including sweat, tears and saliva, and are a key technology to realize portable personalized medicine. Flexible electrochemical pH sensors can play a significant role in health since the pH level affects most biochemical reactions in the human body. pH indicators can be used for the diagnosis and treatment of diseases as well as the monitoring of biological processes. The performances and applications of wearable pH sensors depend significantly on the properties of the pH-sensitive materials used. At present, existing pH-sensitive materials are mainly based on polyaniline (PANI), hydrogen ionophores (HIs) and metal oxides (MOx). In this review, we will discuss the recent progress in wearable pH sensors based on these sensitive materials. Finally, a viewpoint for state-of-the-art wearable pH sensors and a discussion of their existing challenges are presented.
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Affiliation(s)
- Yitian Tang
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Lijie Zhong
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Wei Wang
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Ying He
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Tingting Han
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Longbin Xu
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Xiaocheng Mo
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Zhenbang Liu
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
- School of Computer Science and Cyber Engineering, Guangzhou University, Guangzhou 510006, China
| | - Yingming Ma
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Yu Bao
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Shiyu Gan
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
| | - Li Niu
- School of Civil Engineering, c/o Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China; (Y.T.); (W.W.); (Y.H.); (T.H.); (L.X.); (X.M.); (Z.L.); (Y.M.); (Y.B.); (S.G.)
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67
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Norouzi N, Omo-Lamai D, Alimohammadi F, Averianov T, Kuang J, Yan S, Wang L, Stavitski E, Leshchev D, Takeuchi KJ, Takeuchi ES, Marschilok AC, Bock DC, Pomerantseva E. The Dopamine Assisted Synthesis of MoO 3/Carbon Electrodes With Enhanced Capacitance in Aqueous Electrolyte. Front Chem 2022; 10:873462. [PMID: 35518718 PMCID: PMC9062078 DOI: 10.3389/fchem.2022.873462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/28/2022] [Indexed: 12/04/2022] Open
Abstract
A capacitance increase phenomenon is observed for MoO3 electrodes synthesized via a sol-gel process in the presence of dopamine hydrochloride (Dopa HCl) as compared to α-MoO3 electrodes in 5M ZnCl2 aqueous electrolyte. The synthesis approach is based on a hydrogen peroxide-initiated sol-gel reaction to which the Dopa HCl is added. The powder precursor (Dopa)xMoOy, is isolated from the metastable gel using freeze-drying. Hydrothermal treatment (HT) of the precursor results in the formation of MoO3 accompanied by carbonization of the organic molecules; designated as HT-MoO3/C. HT of the precipitate formed in the absence of dopamine in the reaction produced α-MoO3, which was used as a reference material in this study (α-MoO3-ref). Scanning electron microscopy (SEM) images show a nanobelt morphology for both HT-MoO3/C and α-MoO3-ref powders, but with distinct differences in the shape of the nanobelts. The presence of carbonaceous content in the structure of HT-MoO3/C is confirmed by FTIR and Raman spectroscopy measurements. X-ray diffraction (XRD) and Rietveld refinement analysis demonstrate the presence of α-MoO3 and h-MoO3 phases in the structure of HT-MoO3/C. The increased specific capacitance delivered by the HT-MoO3/C electrode as compared to the α-MoO3-ref electrode in 5M ZnCl2 electrolyte in a −0.25–0.70 V vs. Ag/AgCl potential window triggered a more detailed study in an expanded potential window. In the 5M ZnCl2 electrolyte at a scan rate of 2 mV s−1, the HT-MoO3/C electrode shows a second cycle capacitance of 347.6 F g−1. The higher electrochemical performance of the HT-MoO3/C electrode can be attributed to the presence of carbon in its structure, which can facilitate electron transport. Our study provides a new route for further development of metal oxides for energy storage applications.
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Affiliation(s)
- Nazgol Norouzi
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United States
| | - Darrell Omo-Lamai
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United States
| | - Farbod Alimohammadi
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United States
| | - Timofey Averianov
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United States
| | - Jason Kuang
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, United States.,Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States
| | - Shan Yan
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States
| | - Lei Wang
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States.,Brookhaven National Laboratory, Interdisciplinary Science Department, Upton, NY, United States
| | - Eli Stavitski
- Energy and Photon Sciences Directorate, National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, United States
| | - Denis Leshchev
- Energy and Photon Sciences Directorate, National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, United States
| | - Kenneth J Takeuchi
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, United States.,Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States.,Brookhaven National Laboratory, Interdisciplinary Science Department, Upton, NY, United States.,Department of Chemistry, Stony Brook University, Stony Brook, NY, United States
| | - Esther S Takeuchi
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, United States.,Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States.,Brookhaven National Laboratory, Interdisciplinary Science Department, Upton, NY, United States.,Department of Chemistry, Stony Brook University, Stony Brook, NY, United States
| | - Amy C Marschilok
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, United States.,Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States.,Brookhaven National Laboratory, Interdisciplinary Science Department, Upton, NY, United States.,Department of Chemistry, Stony Brook University, Stony Brook, NY, United States
| | - David C Bock
- Institute for Electrochemically Stored Energy, Stony Brook University, Stony Brook, NY, United States.,Brookhaven National Laboratory, Interdisciplinary Science Department, Upton, NY, United States
| | - Ekaterina Pomerantseva
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, United States
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68
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Zhang C, Xie C, Gao Y, Tao X, Ding C, Fan F, Jiang HL. Charge Separation by Creating Band Bending in Metal‐Organic Frameworks for Improved Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204108] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chenxi Zhang
- USTC: University of Science and Technology of China Chemistry CHINA
| | - Chenfan Xie
- USTC: University of Science and Technology of China Chemistry CHINA
| | - Yuying Gao
- DICP: Chinese Academy of Sciences Dalian Institute of Chemical Physics State Key Laboratory of Catalysis CHINA
| | - Xiaoping Tao
- Shinshu University Graduate School of Engineering Faculty of Engineering: Shinshu Daigaku Chemistry CHINA
| | - Chunmei Ding
- DICP: Chinese Academy of Sciences Dalian Institute of Chemical Physics State Key Laboratory of Catalysis CHINA
| | - Fengtao Fan
- DICP: Chinese Academy of Sciences Dalian Institute of Chemical Physics State Key Laboratory of Catalysis CHINA
| | - Hai-Long Jiang
- University of Science and Technology of China (USTC) Department of Chemistry No. 96 Jinzhai Road 230026 Hefei CHINA
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69
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Sang T, Pei Y, Mi Q, Li S, Yang C, Wang Y, Cao G. Lithography-free tunable absorber at visible region via one-dimensional photonic crystals consisting of an α-MoO 3 layer. OPTICS EXPRESS 2022; 30:14408-14420. [PMID: 35473184 DOI: 10.1364/oe.457528] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/04/2022] [Indexed: 06/14/2023]
Abstract
Flexible control of light absorption within the lithography-free nanostructure is crucial for many polarization-dependent optical devices. Herein, we demonstrated that the lithography-free tunable absorber (LTA) can be realized by using two one-dimensional (1D) photonic crystals (PCs) consisting of an α-MoO3 layer at visible region. The two 1D PCs have different bulk band properties, and the topological interface state-induced light absorption enhancement of α-MoO3 can be realized as the α-MoO3 thin film is inserted at the interface between the two 1D PCs. The resonant cavity model is proposed to evaluate the anisotropic absorption performances of the LTA, and the results are in good agreement with those of the transfer matrix method (TMM). The absorption efficiency of the LTA can be tailored by the number of the period of the two PCs, and the larger peak absorption is the direct consequence of the larger field enhancement factor (FEF) within the α-MoO3 layer. In addition, near-perfect absorption can be achieved as the LTA is operated at the over-coupled resonance. By varying the polarization angle, the absorption channels can be selected and the reflection response can be effectively modulated due to the excellent in-plane anisotropy of α-MoO3.
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70
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Reversely trapping atoms from a perovskite surface for high-performance and durable fuel cell cathodes. Nat Catal 2022. [DOI: 10.1038/s41929-022-00764-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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71
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Ding N, Wu Y, Xu W, Lyu J, Wang Y, Zi L, Shao L, Sun R, Wang N, Liu S, Zhou D, Bai X, Zhou J, Song H. A novel approach for designing efficient broadband photodetectors expanding from deep ultraviolet to near infrared. LIGHT, SCIENCE & APPLICATIONS 2022; 11:91. [PMID: 35410451 PMCID: PMC9001727 DOI: 10.1038/s41377-022-00777-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 03/02/2022] [Accepted: 03/24/2022] [Indexed: 05/03/2023]
Abstract
Broadband photodetection (PD) covering the deep ultraviolet to near-infrared (200-1000 nm) range is significant and desirable for various optoelectronic designs. Herein, we employ ultraviolet (UV) luminescent concentrators (LC), iodine-based perovskite quantum dots (PQDs), and organic bulk heterojunction (BHJ) as the UV, visible, and near-infrared (NIR) photosensitive layers, respectively, to construct a broadband heterojunction PD. Firstly, experimental and theoretical results reveal that optoelectronic properties and stability of CsPbI3 PQDs are significantly improved through Er3+ doping, owing to the reduced defect density, improved charge mobility, increased formation energy, tolerance factor, etc. The narrow bandgap of CsPbI3:Er3+ PQDs serves as a visible photosensitive layer of PD. Secondly, considering the matchable energy bandgap, the BHJ (BTP-4Cl: PBDB-TF) is selected as to NIR absorption layer to fabricate the hybrid structure with CsPbI3:Er3+ PQDs. Thirdly, UV LC converts the UV light (200-400 nm) to visible light (400-700 nm), which is further absorbed by CsPbI3:Er3+ PQDs. In contrast with other perovskites PDs and commercial Si PDs, our PD presents a relatively wide response range and high detectivity especially in UV and NIR regions (two orders of magnitude increase that of commercial Si PDs). Furthermore, the PD also demonstrates significantly enhanced air- and UV- stability, and the photocurrent of the device maintains 81.5% of the original one after 5000 cycles. This work highlights a new attempt for designing broadband PDs, which has application potential in optoelectronic devices.
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Affiliation(s)
- Nan Ding
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Yanjie Wu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Wen Xu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Dalian Minzu University, Dalian, 116600, China.
| | - Jiekai Lyu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Yue Wang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Lu Zi
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Long Shao
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Rui Sun
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Nan Wang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Sen Liu
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Donglei Zhou
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Xue Bai
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Ji Zhou
- State Kay Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Hongwei Song
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
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72
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Wollak B, Doronkin D, Espinoza D, Sheppard T, Korup O, Schmidt M, Alizadefanaloo S, Rosowski F, Schroer C, Grunwaldt JD, Horn R. Exploring catalyst dynamics in a fixed bed reactor by correlative operando spatially-resolved structure-activity profiling. J Catal 2022. [DOI: 10.1016/j.jcat.2021.08.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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73
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Surnev S, Netzer FP. Tungsten and molybdenum oxide nanostructures: two-dimensional layers and nanoclusters. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:233001. [PMID: 35045403 DOI: 10.1088/1361-648x/ac4ceb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
W- and Mo-oxides form an interesting class of materials, featuring structural complexities, stoichiometric flexibility, and versatile physical and chemical properties that render them attractive for many applications in diverse fields of nanotechnologies. In nanostructured form, novel properties and functionalities emerge as a result of quantum size and confinement effects. In this topical review, W- and Mo-oxide nanosystems are examined with particular emphasis on two-dimensional (2D) layers and small molecular-type clusters. We focus on the epitaxial growth of 2D layers on metal single crystal surfaces and investigate their novel geometries and structures by a surface science approach. The coupling between the oxide overlayer and the metal substrate surface is a decisive element in the formation of the oxide structures and interfacial strain and charge transfer are shown to determine the lowest energy structures. Atomic structure models as determined by density functional theory (DFT) simulations are reported and discussed for various interface situations, with strong and weak coupling. Free-standing (quasi-)2D oxide layers, so-called oxide nanosheets, are attracting a growing interest recently in the applied research community because of their easy synthesis via wet-chemical routes. Although they consist typically of several atomic layers thick-not always homogeneous-platelet systems, their quasi-2D character induces a number of features that make them attractive for optoelectronic, sensor or biotechnological device applications. A brief account of recently published preparation procedures of W- and Mo-oxide nanosheets and some prototypical examples of proof of concept applications are reported here. (MO3)3(M = W, Mo) clusters can be generated in the gas phase in nearly monodisperse form by a simple vacuum sublimation technique. These clusters, interesting molecular-type structures by their own account, can be deposited on a solid surface in a controlled way and be condensed into 2D W- and Mo-oxide layers; solid-state chemical reactions with pre-deposited surface oxide layers to form 2D ternary oxide compounds (tungstates, molybdates) have also been reported. The clusters have been proposed as model systems for molecular studies of reactive centres in catalytic reactions. Studies of the catalysis of (MO3)3clusters in unsupported and supported forms, using the conversion of alcohols as model reactions, are discussed. Finally, we close with a brief outlook of future perspectives.
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Affiliation(s)
- Svetlozar Surnev
- Surface and Interface Physics, Institute of Physics, Karl-Franzens University Graz, A-8010 GRAZ, Austria
| | - Falko P Netzer
- Surface and Interface Physics, Institute of Physics, Karl-Franzens University Graz, A-8010 GRAZ, Austria
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74
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Kateshiya MR, Malek NI, Kumar Kailasa S. Green fluorescent carbon dots functionalized MoO3 nanoparticles for sensing of hypochlorite. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118628] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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75
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Molybdenum Oxide Nanoparticle Aggregates Grown by Chemical Vapor Transport. MATERIALS 2022; 15:ma15062182. [PMID: 35329634 PMCID: PMC8954492 DOI: 10.3390/ma15062182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/09/2022] [Accepted: 03/15/2022] [Indexed: 02/04/2023]
Abstract
In this study, the advanced chemical vapor transport (CVT) method in combination with the quenching effect is introduced for creating molybdenum oxide nanoparticle arrays, composed of the hierarchical structure of fine nanoparticles (NPs), which are vertically grown with a homogeneous coverage on the individual carbon fibers of carbon fiber paper (CFP) substrates. The obtained molybdenum oxide NPs hold a metastable high-temperature γ-Mo4O11 phase along with a stable α-MoO3 phase by the quenching effect. Furthermore, such a quenching effect forms thinner and smaller nanoparticle aggregates by suppressing the growth and coalescence of primary particles. The molybdenum oxide nanoparticle aggregates are prepared using two different types of precursors: MoO3 and a 1:1 (mol/mol) mixture of MoO3 and activated carbon. The results characterized using X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy show that the relative amount of α-MoO3 to γ-Mo4O11 within the prepared NPs is dependent on the precursor type; a lower amount of α-MoO3 to γ-Mo4O11 is obtained in the NPs prepared using the mixed precursor of MoO3 and carbon. This processing–structure landscape study can serve as the groundwork for the development of high-performance nanomaterials in various electronic and catalytic applications.
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76
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Kateshiya MR, Malek NI, Kailasa SK. Folic acid functionalized molybdenum oxide quantum dots for the detection of Cu 2+ ion and alkaline phosphatase via fluorescence turn off-on mechanism. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 268:120659. [PMID: 34863637 DOI: 10.1016/j.saa.2021.120659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/14/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
The assay of alkaline phosphatase (ALP) plays a key role in the diagnosis of various diseases. Herein, folic acid functionalized molybdenum oxide quantum dots (FA-MoOx QDs) are explored as fluorescence "turn- off and on" probes for assaying of Cu2+ ion and ALP, respectively. This fluorescence sensing strategy was based on the quenching of emission peak of FA-MoOx QDs at 445 nm by Cu2+ ion, followed by restoring of emission peak selectively with ALP. Based on the quenching and restoring of FA-MoOx QDs emission intensity, quantitative assay was developed for the detection of Cu2+ ion (0.20 - 500 µM) and ALP (0.06 - 150 U/L) with detection limits of 29 nM and 0.026 U/L, respectively. The developed FA-MoOx QDs-based fluorescence "turn- off and on" strategy exhibited satisfactory results for assaying of ALP in biofluids.
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Affiliation(s)
- Mehul R Kateshiya
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, Gujarat, India
| | - Naved I Malek
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, Gujarat, India
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, Gujarat, India.
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77
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Fabrication of graphitic carbon Nitride/Nonstoichiometric molybdenum oxide nanorod composite with the nonmetal plasma enhanced photocatalytic hydrogen evolution activity. J Colloid Interface Sci 2022; 606:848-859. [PMID: 34425272 DOI: 10.1016/j.jcis.2021.08.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 08/10/2021] [Accepted: 08/11/2021] [Indexed: 12/14/2022]
Abstract
The extended light absorption and the prevented charge recombination are crucial for the graphitic carbon nitride (g-C3N4) based photocatalytic materials. Herein, nonstoichiometric molybdenum oxide (MoO3-x) nanorods with oxygen vacancies were synthesized by a hydrothermal method with trace amount of oleylamine, and the Z-scheme two-dimentional (2D)/one-dimentional (1D) g-C3N4/MoO3-x composites were prepared by a facile electrostatic assembling approach. The blue MoO3-x nanorods with oxygen vacancies are loaded uniformly on the g-C3N4 nanosheets. The g-C3N4/MoO3-x composite materials exhibit strong absorption in the visible and near-infrared light regions, and the improved charge separation efficiency through the Z-scheme charge transfer mechanism. The g-C3N4/MoO3-x composite presents a significantly improved photocatalytic hydrogen generation activity with good cycling stability compared with sonicated g-C3N4 nanosheets. The best hydrogen generation activity of 209.2 μmol·h-1 under solar light irradiation and the highest apparent quantum efficiency of 4.4% irradiated at 365 nm are obtained by the g-C3N4/MoO3-x composite with a mass percent of 27.5%, which is 2.63 times of g-C3N4. The weight ratios and the content of oxygen vacancies in the small-size MoO3-x nanorods have a significant influence on the photocatalytic hydrogen performance. Moreover, effective photocatalytic overall water splitting can be achieved with the H2 and O2 evolution rates of 0.755 and 0.368 μmol∙h-1 by the g-C3N4/MoO3-x composite. The novel g-C3N4/MoO3-x composite will have broad prospects in the field of photocatalytic applications.
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78
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Zhao XS, Elkholy AE, Duignan TT, Hussain T, Knibbe R. Charge Storage Behaviour of α‐MoO3 in Aqueous Electrolytes — Effect of Charge Density of Electrolyte Cations. ChemElectroChem 2022. [DOI: 10.1002/celc.202101449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xiu Song Zhao
- The University of Queensland School of Chemical Engineering St Lucia Campus 4072 Brisbane AUSTRALIA
| | - Ayman E. Elkholy
- The University of Queensland School of Chemical Engineering AUSTRALIA
| | | | - Tanveer Hussain
- The University of Queensland - Saint Lucia Campus: The University of Queensland School of Chemical Engineering AUSTRALIA
| | - Ruth Knibbe
- The University of Queensland - Saint Lucia Campus: The University of Queensland School of Mechanical and Mining Engineering AUSTRALIA
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79
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Basak S, Sikdar S, Ali S, Mondal M, Roy D, Dakua VK, Roy MN. Synthesis and characterization of Mo xFe 1−xO nanocomposites for the ultra-fast degradation of methylene blue via a Fenton-like process: a green approach. NEW J CHEM 2022. [DOI: 10.1039/d2nj02720h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed degradation study of methylene blue within 22 minutes by the green synthesis of MoxFe1−xO nanocomposites using Punica granatum peel extract.
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Affiliation(s)
- Shatarupa Basak
- Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India
| | - Suranjan Sikdar
- Department of Chemistry, Govt. General Degree College, Kushmandi, Dakshin Dinajpur-733121, West Bengal, India
| | - Salim Ali
- Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India
| | - Modhusudan Mondal
- Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India
| | - Debadrita Roy
- Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India
| | - Vikas Kumar Dakua
- Department of Chemistry, Alipurduar University, Alipurduar-736122, West Bengal, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling-734013, West Bengal, India
- Alipurduar University, Alipurduar-736122, West Bengal, India
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80
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Aerobic oxidation of 5-[(formyloxy)methyl]furfural to 2,5-furandicarboxylic acid over MoCuOx catalyst. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2021.111986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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81
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Dai H, Zhou J, Qin G, Sun G. Enhanced Jahn-Teller distortion boosts molybdenum trioxide's superior lithium ion storage capability. Dalton Trans 2021; 51:524-531. [PMID: 34874035 DOI: 10.1039/d1dt03580k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Upgrading the energy density and cycling life of current lithium ion batteries is urgently needed for developing advanced portable electronics and electric vehicles. Amorphous transition metal oxides (TMO) with inherent lattice disorders exhibit enormous potential as electrode materials owing to their high specific capacity, fast ion diffusion, and excellent cyclic stability. Yet, challenges remain in their controllable synthesis. In this study, the amorphous phase is induced into α-MoO3 crystal nanobelts at room temperature with the aid of Jahn-Teller effect via enhanced lattice distortion triggered by the accumulation of low-valent molybdenum centers. The optimized HI-MoO3-36 h exhibits high reversible capacities of 886.0 at 0.1 A g-1 and 491.1 mA h g-1 at 1.0 A g-1, respectively, along with outstanding stability retaining 83.4% initial capacity after 100 cycles at 0.1 A g-1. The crystal engineering strategy proposed in this work is believed to be a salutary reference towards the synthesis of high-performance TMO anodes for energy storage applications.
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Affiliation(s)
- Henghan Dai
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China. .,Institute of Advanced Materials, Nanjing Tech University, Nanjing 211816, China.
| | - Jinyuan Zhou
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Gang Qin
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China.
| | - Gengzhi Sun
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China. .,Institute of Advanced Materials, Nanjing Tech University, Nanjing 211816, China.
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82
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Wang Y, Mayyas M, Yang J, Ghasemian MB, Tang J, Mousavi M, Han J, Ahmed M, Baharfar M, Mao G, Yao Y, Esrafilzadeh D, Cortie D, Kalantar-Zadeh K. Liquid-Metal-Assisted Deposition and Patterning of Molybdenum Dioxide at Low Temperature. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53181-53193. [PMID: 34723471 DOI: 10.1021/acsami.1c15367] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Molybdenum dioxide (MoO2), considering its near-metallic conductivity and surface plasmonic properties, is a great material for electronics, energy storage devices and biosensing. Yet to this day, room-temperature synthesis of large area MoO2, which allows deposition on arbitrary substrates, has remained a challenge. Due to their reactive interfaces and specific solubility conditions, gallium-based liquid metal alloys offer unique opportunities for synthesizing materials that can meet these challenges. Herein, a substrate-independent liquid metal-based method for the room temperature deposition and patterning of MoO2 is presented. By introducing a molybdate precursor to the surrounding of a eutectic gallium-indium alloy droplet, a uniform layer of hydrated molybdenum oxide (H2MoO3) is formed at the interface. This layer is then exfoliated and transferred onto a desired substrate. Utilizing the transferred H2MoO3 layer, a laser-writing technique is developed which selectively transforms this H2MoO3 into crystalline MoO2 and produces electrically conductive MoO2 patterns at room temperature. The electrical conductivity and plasmonic properties of the MoO2 are analyzed and demonstrated. The presented metal oxide room-temperature deposition and patterning method can find many applications in optoelectronics, sensing, and energy industries.
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Affiliation(s)
- Yifang Wang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Mohannad Mayyas
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Jiong Yang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Mohammad B Ghasemian
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Jianbo Tang
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Maedehsadat Mousavi
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Jialuo Han
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Mostak Ahmed
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Mahroo Baharfar
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Guangzhao Mao
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Yin Yao
- Electron Microscope Unit, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - Dorna Esrafilzadeh
- Graduate School of Biomedical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
| | - David Cortie
- Australian Institute for Innovative Materials, Institute for Superconducting and Electronic Materials, University of Wollongong, Innovation Campus Squires Way, North Wollongong, New South Wales 2522, Australia
| | - Kourosh Kalantar-Zadeh
- School of Chemical Engineering, University of New South Wales (UNSW), Sydney Campus, Sydney, New South Wales 2052, Australia
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83
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Szoszkiewicz R. Local Interactions of Atmospheric Oxygen with MoS 2 Crystals. MATERIALS (BASEL, SWITZERLAND) 2021; 14:5979. [PMID: 34683567 PMCID: PMC8540515 DOI: 10.3390/ma14205979] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/29/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022]
Abstract
Thin and single MoS2 flakes are envisioned to contribute to the flexible nanoelectronics, particularly in sensing, optoelectronics and energy harvesting. Thus, it is important to study their stability and local surface reactivity. Their most straightforward surface reactions in this context pertain to thermally induced interactions with atmospheric oxygen. This review focuses on local and thermally induced interactions of MoS2 crystals and single MoS2 flakes. First, experimentally observed data for oxygen-mediated thermally induced morphological and chemical changes of the MoS2 crystals and single MoS2 flakes are presented. Second, state-of-the-art mechanistic insight from computer simulations and arising open questions are discussed. Finally, the properties and fate of the Mo oxides arising from thermal oxidation are reviewed, and future directions into the research of the local MoS2/MoOx interface are provided.
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Affiliation(s)
- Robert Szoszkiewicz
- Faculty of Chemistry, Biological and Chemical Research Centre, University of Warsaw, Żwirki i Wigury 101, 02-089 Warsaw, Poland
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84
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Hermawan A, Septiani NLW, Taufik A, Yuliarto B, Yin S. Advanced Strategies to Improve Performances of Molybdenum-Based Gas Sensors. NANO-MICRO LETTERS 2021; 13:207. [PMID: 34633560 PMCID: PMC8505593 DOI: 10.1007/s40820-021-00724-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 08/22/2021] [Indexed: 05/29/2023]
Abstract
Molybdenum-based materials have been intensively investigated for high-performance gas sensor applications. Particularly, molybdenum oxides and dichalcogenides nanostructures have been widely examined due to their tunable structural and physicochemical properties that meet sensor requirements. These materials have good durability, are naturally abundant, low cost, and have facile preparation, allowing scalable fabrication to fulfill the growing demand of susceptible sensor devices. Significant advances have been made in recent decades to design and fabricate various molybdenum oxides- and dichalcogenides-based sensing materials, though it is still challenging to achieve high performances. Therefore, many experimental and theoretical investigations have been devoted to exploring suitable approaches which can significantly enhance their gas sensing properties. This review comprehensively examines recent advanced strategies to improve the nanostructured molybdenum-based material performance for detecting harmful pollutants, dangerous gases, or even exhaled breath monitoring. The summary and future challenges to advance their gas sensing performances will also be presented.
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Affiliation(s)
- Angga Hermawan
- Faculty of Textile Science and Engineering, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan
- Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Ni Luh Wulan Septiani
- Advanced Functional Materials Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia
- Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Bandung, 40132, Indonesia
| | - Ardiansyah Taufik
- Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan
| | - Brian Yuliarto
- Advanced Functional Materials Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia.
- Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Bandung, 40132, Indonesia.
| | - Shu Yin
- Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan.
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85
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Niu W, Chen M, Guo Y, Wang M, Luo M, Cheng W, Wang Y, Lei B. A Multifunctional Bioactive Glass-Ceramic Nanodrug for Post-Surgical Infection/Cancer Therapy-Tissue Regeneration. ACS NANO 2021; 15:14323-14337. [PMID: 34491737 DOI: 10.1021/acsnano.1c03214] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The production of reactive oxygen species, persistent inflammation, bacterial infection, and recurrence after a tumor resection has become the main challenge in cancer therapy and post-surgical skin regeneration. Herein, we report a multifunctional branched bioactive Si-Ca-P-Mo glass-ceramic nanoparticle (BBGN) with inlaid molybdate nanocrystals for an effective post-surgical melanoma therapy or infection therapy and defected skin reconstruction. Mixed-valence molybdenum (Mo4+ and Mo6+) doped BBGN (BBGN-Mo) was first synthesized via a hydrothermally assisted classical synthesis of BGN, which enables the structure with a lot of free electrons and oxygen vacancies. The BBGN-Mo exhibits excellent photothermal, antibacterial, enzyme-like radical scavenging, and anti-inflammatory as well as promoted vascularized efficiencies. BBGN-Mo could kill drug-resistant methicillin-resistant Staphylococcus aureus (MRSA) bacteria in vitro (99.5%) and in vivo (97.0%) at a low photothermal temperature (42 °C) and efficiently enhance the MRSA-infected wound repair. Additionally, BBGN-Mo could effectively inhibit tumor recurrence (96.4%), continuously improve the wound anti-inflammation and vascularization microenvironment, and significantly promote the post-surgical skin regeneration. This work suggests that conventional bioceramics could be turned to the highly efficient nanodrug for treating the challenge of post-surgical cancer therapy or infection therapy and tissue regeneration, through the mixed-valence strategy.
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Affiliation(s)
- Wen Niu
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Mi Chen
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Yi Guo
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Min Wang
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Meng Luo
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Wei Cheng
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Yidan Wang
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
| | - Bo Lei
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710043, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710000, China
- National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710000, China
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86
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Tong Z, Dumitrică T, Frauenheim T. First-principles prediction of infrared phonon and dielectric function in biaxial hyperbolic van der Waals crystal α-MoO 3. Phys Chem Chem Phys 2021; 23:19627-19635. [PMID: 34524282 DOI: 10.1039/d1cp00682g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Layered biaxial hyperbolic molybdenum trioxide (α-MoO3) with weak van der Waals (vdW) interlayer bonding recently received extensive attention due to its anisotropic dielectric response to infrared (IR) radiation, which couples to the lattice vibrations and allows for manipulating the radiative energy transport. However, the understanding of IR-active phonon modes and dielectric function of it has not yet been fully achieved. Here, by utilizing mode-level first-principles analysis based on density functional theory (DFT), the phonon modes contributing to the IR dielectric response of α-MoO3 are fully determined. The anisotropic IR-active modes are identified from lattice vibration analysis, allowing for a clear evaluation of the IR absorption contribution from the weak or strong IR phonon modes. By further employing anharmonic-lattice dynamics calculations, the damping of the corresponding IR modes is directly obtained. This approach enables predictions of IR optical properties without any fitting or assumed parameters. Our predictions bridge the scientific gap of comprehensively understanding the unreported IR-active phonon modes of α-MoO3 and overall agree well with available experimental data, placing our DFT-based method at a privileged stage for accurately predicting the IR optical properties of α-MoO3. These comprehensive understandings of the IR phonons and dielectric properties of α-MoO3 pave the way for nanophotonic devices with tunable functionalities and enable design of α-MoO3 for advanced optical devices.
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Affiliation(s)
- Zhen Tong
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China.
| | - Traian Dumitrică
- Department of Mechanical Engineering, University of Minnesota, Minnesota 55455, USA.
| | - Thomas Frauenheim
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China. .,Beijing Computational Science Research Center, Beijing 100193, China.,Bremen Center for Computational Materials Science, University of Bremen, Bremen 2835, Germany
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87
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Kuznetsova SA, Khalipova OS, Lisitsa KV, Ditts AA, Malchik AG, Chen Y, Kozik VV. Fabrication of
MoO
3
/
TiO
2
‐SiO
2
with hollow spherical shape using resin as the template: Effect of decomposition of resins. J Appl Polym Sci 2021. [DOI: 10.1002/app.50851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Svetlana A. Kuznetsova
- Department of chemistry National Research Tomsk State University Tomsk Russian Federation
| | - Olga S. Khalipova
- Department of chemistry National Research Tomsk State University Tomsk Russian Federation
| | - Konstantin V. Lisitsa
- Department of chemistry National Research Tomsk State University Tomsk Russian Federation
| | - Alexander A. Ditts
- Yurga Technological Institute, Scientific Educational Center National Research Tomsk Polytechnic University Tomsk Russia Federation
| | - Alexandra G. Malchik
- Yurga Technological Institute, Scientific Educational Center National Research Tomsk Polytechnic University Tomsk Russia Federation
| | - Yu‐Wen Chen
- Department of chemistry National Research Tomsk State University Tomsk Russian Federation
- Department of Chemical Engineering National Central University Jhongli Taiwan
| | - Vladimir V. Kozik
- Department of chemistry National Research Tomsk State University Tomsk Russian Federation
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88
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Tee SY, Ye E, Teng CP, Tanaka Y, Tang KY, Win KY, Han MY. Advances in photothermal nanomaterials for biomedical, environmental and energy applications. NANOSCALE 2021; 13:14268-14286. [PMID: 34473186 DOI: 10.1039/d1nr04197e] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Materials that exhibit photothermal effect have attracted enormous research interests due to their ability to strongly absorb light and effectively transform it into heat for a wide range of applications in biomedical, environmental and energy related fields. The past decade has witnessed significant advances in the preparation of a variety of photothermal materials, mainly due to the emergence of many nano-enabled new materials, such as plasmonic metals, stoichiometric/non-stoichiometric semiconductors, and the newly emerging MXenes. These photothermal nanomaterials can be hybridized with other constituents to form functional hybrids or composites for achieving enhanced photothermal performance. In this review, we present the fundamental insight of inorganic photothermal materials, including their photothermal conversion mechanisms/properties as well as their potential applications in various fields. Emphasis is placed on strategic approaches for improving their light harvesting and photothermal conversion capabilities through engineering their nanostructured size, shape, composition, bandgap and so on. Lastly, the underlying challenges and perspectives for future development of photothermal nanomaterials are proposed.
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Affiliation(s)
- Si Yin Tee
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
| | - Enyi Ye
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
| | - Choon Peng Teng
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
| | - Yuki Tanaka
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
| | | | - Khin Yin Win
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
| | - Ming-Yong Han
- Institute of Materials Research and Engineering (IMRE), 138634, Singapore.
- Institute of Molecular Plus, Tianjin University, Tianjin 300072, China.
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89
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Combination of Metal Oxide and Polytriarylamine: A Design Principle to Improve the Stability of Perovskite Solar Cells. ENERGIES 2021. [DOI: 10.3390/en14165115] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In the last decade, perovskite photovoltaics gained popularity as a potential rival for crystalline silicon solar cells, which provide comparable efficiency for lower fabrication costs. However, insufficient stability is still a bottleneck for technology commercialization. One of the key aspects for improving the stability of perovskite solar cells (PSCs) is encapsulating the photoactive material with the hole-transport layer (HTL) with low gas permeability. Recently, it was shown that the double HTL comprising organic and inorganic parts can perform the protective function. Herein, a systematic investigation and comparison of four double HTLs incorporating polytriarylamine and thermally evaporated transition metal oxides in the highest oxidation state are presented. In particular, it was shown that MoOx, WOx, and VOx-based double HTLs provided stable performance of PSCs for 1250 h, while devices with NbOx lost 30% of their initial efficiency after 1000 h. Additionally, the encapsulating properties of all four double HTLs were studied in trilayer stacks with HTL covering perovskite, and insignificant changes in the absorber composition were registered after 1000 h under illumination. Finally, it was demonstrated using ToF-SIMS that the double HTL prevented the migration of perovskite volatile components within the structure. Our findings pave the way towards improved PSC design that ensures their long-term operational stability.
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90
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Zhumasheva N, Kudreeva L, Kosybayeva D. Molybdenum oxide based sensors. CHEMICAL BULLETIN OF KAZAKH NATIONAL UNIVERSITY 2021. [DOI: 10.15328/cb1164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
In this review article were considered the works of electrochemical sensors modified with molybdenum oxide. The work of sensors based on molybdenum oxide was systematized, a comparison table was developed, the sensors were classified according to the purpose of use. Methods of molybdenum oxide synthesis used to modify the working electrode in electrochemical sensors were considered. The various methods have been used to synthesize molybdenum oxide, such as a thermal, hydrothermal, electrochemical, electric spark, pulsed laser method, acid condensation, electrophoretic precipitation, pulse potential precipitation. The main parameters of the molybdenum oxide modified sensors, such as the detection limit, linear range, response time, sensitivity, and other parameters were compared. As a result of studies, it was found that molybdenum oxide is selected as a modifying material in electrochemical sensors due to the unique physicochemical properties of molybdenum oxide, in particular because of mechanical strength, electrical conductivity, electro catalytic activity, crystallinity. The features of electrochemical biosensors coated with molybdenum oxide were described for the detection of important compounds in specific samples. Sensors based on molybdenum oxide have been used for detection of glucose, dopamine, ethanol, ascorbic acid, troponin-1, norepinephrine, procalcitonin, L-lactate, bromate, chlorate, E110, tartrazine, hydrochlorothiazide, human epidermal growth factor-2, lithium,sodium,potassium. This paper provides general summarized information about current aspects of research works related to electrochemical sensors based on molybdenum oxide.
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91
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Yu B, Wang W, Sun W, Jiang C, Lu L. Defect Engineering Enables Synergistic Action of Enzyme-Mimicking Active Centers for High-Efficiency Tumor Therapy. J Am Chem Soc 2021; 143:8855-8865. [PMID: 34086444 DOI: 10.1021/jacs.1c03510] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Perusing redox nanozymes capable of disrupting cellular homeostasis offers new opportunities to develop cancer-specific therapy, but remains challenging, because most artificial enzymes lack enzyme-like scale and configuration. Herein, for the first time, we leverage a defect engineering strategy to develop a simple yet efficient redox nanozyme by constructing enzyme-mimicking active centers and investigated its formation and catalysis mechanism thoroughly. Specifically, the partial Fe doping in MoOx (donated as Fe-MoOv) was demonstrated to activate structure reconstruction with abundant defect site generation, including Fe substitution and oxygen vacancy (OV) defects, which significantly enable the binding capacity and catalytic activity of Fe-MoOv nanozymes in a synergetic fashion. More intriguingly, plenty of delocalized electrons appear due to Fe-facilitated band structure reconstruction, directly contributing to the remarkable surface plasmon resonance effect in the near-infrared (NIR) region. Under NIR-II laser irradiation, the designed Fe-MoOv nanozymes are able to induce substantial disruption of redox and metabolism homeostasis in the tumor region via enzyme-mimicking cascade reactions, thus significantly augmenting therapeutic effects. This study that takes advantage of defect engineering offers new insights into developing high-efficiency redox nanozymes.
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Affiliation(s)
- Bin Yu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.,University of the Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Wei Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.,School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
| | - Wenbo Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China.,College of Materials Science and Engineering, College of Chemistry and Chemical Engineering, Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center of Qingdao University, Qingdao University, Qingdao 266071, People's Republic of China
| | - Chunhuan Jiang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Lehui Lu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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Wang H, Ma J, Zhang J, Feng Y, Vijjapu MT, Yuvaraja S, Surya SG, Salama KN, Dong C, Wang Y, Kuang Q, Tshabalala ZP, Motaung DE, Liu X, Yang J, Fu H, Yang X, An X, Zhou S, Zi B, Liu Q, Urso M, Zhang B, Akande AA, Prasad AK, Hung CM, Van Duy N, Hoa ND, Wu K, Zhang C, Kumar R, Kumar M, Kim Y, Wu J, Wu Z, Yang X, Vanalakar SA, Luo J, Kan H, Li M, Jang HW, Orlandi MO, Mirzaei A, Kim HW, Kim SS, Uddin ASMI, Wang J, Xia Y, Wongchoosuk C, Nag A, Mukhopadhyay S, Saxena N, Kumar P, Do JS, Lee JH, Hong S, Jeong Y, Jung G, Shin W, Park J, Bruzzi M, Zhu C, Gerald RE, Huang J. Gas sensing materials roadmap. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33. [PMID: 33794513 DOI: 10.1088/1361-648x/abf477] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 04/01/2021] [Indexed: 05/14/2023]
Abstract
Gas sensor technology is widely utilized in various areas ranging from home security, environment and air pollution, to industrial production. It also hold great promise in non-invasive exhaled breath detection and an essential device in future internet of things. The past decade has witnessed giant advance in both fundamental research and industrial development of gas sensors, yet current efforts are being explored to achieve better selectivity, higher sensitivity and lower power consumption. The sensing layer in gas sensors have attracted dominant attention in the past research. In addition to the conventional metal oxide semiconductors, emerging nanocomposites and graphene-like two-dimensional materials also have drawn considerable research interest. This inspires us to organize this comprehensive 2020 gas sensing materials roadmap to discuss the current status, state-of-the-art progress, and present and future challenges in various materials that is potentially useful for gas sensors.
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Affiliation(s)
- Huaping Wang
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jianmin Ma
- School of Physics and Electronics, Hunan University, Changsha 410082, People's Republic of China
| | - Jun Zhang
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Yuezhan Feng
- Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, Zhengzhou University, Zhengzhou, 450002 Henan, People's Republic of China
| | - Mani Teja Vijjapu
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Saravanan Yuvaraja
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Sandeep G Surya
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Khaled N Salama
- Sensors Lab, Advanced Membranes and Porous Materials Center, Computer, Electrical and Mathematical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
| | - Chengjun Dong
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Yude Wang
- School of Materials and Energy, Yunnan University, Kunming, People's Republic of China
| | - Qin Kuang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, People's Republic of China
| | - Zamaswazi P Tshabalala
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - David E Motaung
- Department of Physics, University of the Free State, PO Box 339, Bloemfontein ZA9300, South Africa
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
| | - Xianghong Liu
- College of Physics, Qingdao University, Qingdao 266071, People's Republic of China
| | - Junliang Yang
- School of Physics and Electronics, Central South University, Changsha 410083, People's Republic of China
| | - Haitao Fu
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xiaohong Yang
- Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Northeastern University, Shenyang 110819, People's Republic of China
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Xizhong An
- School of Metallurgy, Northeastern University, Shenyang 110819, People's Republic of China
| | - Shiqiang Zhou
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Baoye Zi
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Qingju Liu
- School of Materials Science and Engineering, Yunnan University, Kunming, People's Republic of China
| | - Mario Urso
- IMM-CNR and Dipartimento di Fisica e Astronomia 'Ettore Majorana', Università di Catania, via S Sofia 64, 95123 Catania, Italy
| | - Bo Zhang
- School of Internet of Things Engineering, Jiangnan University, Lihu Avenue 1800#, Wuxi, 214122, People's Republic of China
| | - A A Akande
- Department of Physics, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
- Advanced Internet of Things, CSIR NextGen Enterprises and Institutions, PO Box 395, Pretoria, 0001, South Africa
| | - Arun K Prasad
- Indira Gandhi Centre for Atomic Research, Homi Bhabha National Institute, Kalpakkam 603102, India
| | - Chu Manh Hung
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Van Duy
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Nguyen Duc Hoa
- International Training Institute for Materials Science (ITIMS), Hanoi University of Science and Technology (HUST), No 1-Dai Co Viet Str. Hanoi, Vietnam
| | - Kaidi Wu
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Chao Zhang
- College of Mechanical Engineering, Yangzhou University, People's Republic of China
| | - Rahul Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Mahesh Kumar
- Department of Electrical Engineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, India
| | - Youngjun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Republic of Korea
| | - Jin Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zixuan Wu
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xing Yang
- State Key Laboratory of Optoelectronic Materials and Technologies and the Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - S A Vanalakar
- Department of Physics, Karmaveer Hire Arts, Science, Commerce and Education College, Gargoti 416-009, India
| | - Jingting Luo
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Hao Kan
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Min Li
- College of Physics and Optoelectronic Engineering, Shenzhen University, 518060, Shenzhen, People's Republic of China
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul 08826, Republic of Korea
| | - Marcelo Ornaghi Orlandi
- Department of of Engineering, Physics and Mathematics, São Paulo State University (UNESP), Araraquara - SP 14800-060, Brazil
| | - Ali Mirzaei
- Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, 71557-13876, Iran
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University, Incheon 22212, Republic of Korea
| | - A S M Iftekhar Uddin
- Department of Electrical and Electronic Engineering, Metropolitan University, Bateshwar, Sylhet-3103, Bangladesh
| | - Jing Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, People's Republic of China
| | - Yi Xia
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming 650093, People's Republic of China
| | - Chatchawal Wongchoosuk
- Department of Physics, Faculty of Science, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
| | - Anindya Nag
- DGUT-CNAM Institute, Dongguan University of Technology, Dongguan, People's Republic of China
| | | | - Nupur Saxena
- Department of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J&K-181143, India
| | - Pragati Kumar
- Department of Nanosciences and Materials, Central University of Jammu, Rahya-Suchani, Samba, Jammu, J & K -181143, India
| | - Jing-Shan Do
- Department of Chemical and Materials Engineering, National Chin-Yi University of Technology, Taichung 41170, Taiwan
| | - Jong-Ho Lee
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seongbin Hong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yujeong Jeong
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Gyuweon Jung
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Wonjun Shin
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jinwoo Park
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Mara Bruzzi
- Department of Physics and Astronomy, Unviersity of Florence, Via G. Sansone 1, Sesto Fiorentino, Florence, Italy
| | - Chen Zhu
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Rex E Gerald
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
| | - Jie Huang
- Department of Electrical and Computer Engineering, Missouri University of Science and Technology, Rolla, MO65409, United States of America
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93
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Sun R, Chen H, Sutrisno L, Kawazoe N, Chen G. Nanomaterials and their composite scaffolds for photothermal therapy and tissue engineering applications. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 22:404-428. [PMID: 34121928 PMCID: PMC8183558 DOI: 10.1080/14686996.2021.1924044] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 05/03/2023]
Abstract
Photothermal therapy (PTT) has attracted broad attention as a promising method for cancer therapy with less severe side effects than conventional radiation therapy, chemotherapy and surgical resection. PTT relies on the photoconversion capacity of photothermal agents (PTAs), and a wide variety of nanomaterials have been employed as PTAs for cancer therapy due to their excellent photothermal properties. The PTAs are systematically or locally administered and become enriched in cancer cells to increase ablation efficiency. In recent years, PTAs and three-dimensional scaffolds have been hybridized to realize the local delivery of PTAs for the repeated ablation of cancer cells. Meanwhile, the composite scaffolds can stimulate the reconstruction and regeneration of the functional tissues and organs after ablation of cancer cells. A variety of composite scaffolds of photothermal nanomaterials have been prepared to combine the advantages of different modalities to maximize their therapeutic efficacy with minimal side effects. The synergistic effects make the composite scaffolds attractive for biomedical applications. This review summarizes these latest advances and discusses the future prospects.
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Affiliation(s)
- Rui Sun
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Huajian Chen
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Linawati Sutrisno
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Naoki Kawazoe
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
| | - Guoping Chen
- Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
- Department of Materials Science and Engineering, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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94
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Mittal N, Ojanguren A, Niederberger M, Lizundia E. Degradation Behavior, Biocompatibility, Electrochemical Performance, and Circularity Potential of Transient Batteries. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2004814. [PMID: 34194934 PMCID: PMC8224425 DOI: 10.1002/advs.202004814] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/02/2021] [Indexed: 05/08/2023]
Abstract
Transient technology seeks the development of materials, devices, or systems that undergo controlled degradation processes after a stable operation period, leaving behind harmless residues. To enable externally powered fully transient devices operating for longer periods compared to passive devices, transient batteries are needed. Albeit transient batteries are initially intended for biomedical applications, they represent an effective solution to circumvent the current contaminant leakage into the environment. Transient technology enables a more efficient recycling as it enhances material retrieval rates, limiting both human and environmental exposures to the hazardous pollutants present in conventional batteries. Little efforts are focused to catalog and understand the degradation characteristics of transient batteries. As the energy field is a property-driven science, not only electrochemical performance but also their degradation behavior plays a pivotal role in defining the specific end-use applications. The state-of-the-art transient batteries are critically reviewed with special emphasis on the degradation mechanisms, transiency time, and biocompatibility of the released degradation products. The potential of transient batteries to change the current paradigm that considers batteries as harmful waste is highlighted. Overall, transient batteries are ready for takeoff and hold a promising future to be a frontrunner in the uptake of circular economy concepts.
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Affiliation(s)
- Neeru Mittal
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH ZürichVladimir‐Prelog‐Weg 5Zürich8093Switzerland
| | - Alazne Ojanguren
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH ZürichVladimir‐Prelog‐Weg 5Zürich8093Switzerland
| | - Markus Niederberger
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH ZürichVladimir‐Prelog‐Weg 5Zürich8093Switzerland
| | - Erlantz Lizundia
- Laboratory for Multifunctional MaterialsDepartment of MaterialsETH ZürichVladimir‐Prelog‐Weg 5Zürich8093Switzerland
- Life Cycle Thinking GroupDepartment of Graphic Design and Engineering ProjectsFaculty of Engineering in BilbaoUniversity of the Basque Country (UPV/EHU)Bilbao48013Spain
- BCMaterialsBasque Center for MaterialsApplications and NanostructuresUPV/EHU Science ParkLeioa48940Spain
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95
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Tong Z, Dumitrică T, Frauenheim T. Ultralow Thermal Conductivity in Two-Dimensional MoO 3. NANO LETTERS 2021; 21:4351-4356. [PMID: 33979160 DOI: 10.1021/acs.nanolett.1c00935] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Monolayer molybdenum trioxide (MoO3) is an emerging two-dimensional (2D) material with high electrical conductivity but unexplored thermal conductivity. Using first-principles calculations and a Boltzmann transport theoretical framework, we predict a record low room-temperature phonon thermal conductivity (κp) of 1.57 and 1.26 W/mK along the principal in-plane directions of the MoO3 monolayer. The behavior is attributed to the combination of soft flexural and in-plane acoustic modes, which are coupled through the finite layer thickness, and to the strong bonding anharmonicity, which gives rise to significant 3- and 4-phonon scattering. These insights suggest new indicators for guiding the search of 2D materials with low κp and motivates κp measurements in MoO3 and its applications as a thermoelectric and thermally protective material.
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Affiliation(s)
- Zhen Tong
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China
| | - Traian Dumitrică
- Department of Mechanical Engineering, University of Minnesota, Minnesota 55455, United States
| | - Thomas Frauenheim
- Shenzhen JL Computational Science and Applied Research Institute, Shenzhen 518131, China
- Beijing Computational Science Research Center, Beijing 100193, China
- Bremen Center for Computational Materials Science, University of Bremen, Bremen 2835, Germany
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96
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Raj D, Scaglione F, Fiore G, Celegato F, Rizzi P. Nanostructured Molybdenum Oxides from Aluminium-Based Intermetallic Compound: Synthesis and Application in Hydrogen Evolution Reaction. NANOMATERIALS 2021; 11:nano11051313. [PMID: 34067564 PMCID: PMC8156916 DOI: 10.3390/nano11051313] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 11/16/2022]
Abstract
Characterized by a large surface area to volume ratio, nanostructured metal oxides possess unique chemical and physical properties with applications in electronics, catalysis, sensors, etc. In this study, Mo3Al8, an intermetallic compound, has been used as a precursor to obtain nanostructured molybdenum oxides. It was prepared into ribbons by arc-melting and melt-spinning techniques. Single and double-step free corrosion of the as-quenched material have been studied in 1 M KOH, 1 M HF and 1.25 M FeCl3 at room temperature. In both cases, nanostructured molybdenum oxides were obtained on a surface layer a few microns thick. Two of the as-prepared samples were tested for their electrocatalytic capability for hydrogen evolution reaction (HER) in 0.5 M H2SO4 giving low onset potential (−50 mV, −45 mV), small Tafel slopes (92 mV dec−1, 9 mV dec−1) and high exchange current densities (0.08 mA cm−2, 0.35 mA cm−2 respectively). The proposed nanostructured molybdenum oxides are cost-effective and sustainable due to the cheap and abundant starting material used and the simple synthetic route, paving the way for their possible application as HER electrocatalysts.
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Affiliation(s)
- Deepti Raj
- Dipartimento di Chimica and Centro Interdipartimentale NIS (Nanostructured Interfaces and Surfaces), Università di Torino, V. Giuria 7, 10125 Turin, Italy; (D.R.); (G.F.); (P.R.)
| | - Federico Scaglione
- Dipartimento di Chimica and Centro Interdipartimentale NIS (Nanostructured Interfaces and Surfaces), Università di Torino, V. Giuria 7, 10125 Turin, Italy; (D.R.); (G.F.); (P.R.)
- Correspondence:
| | - Gianluca Fiore
- Dipartimento di Chimica and Centro Interdipartimentale NIS (Nanostructured Interfaces and Surfaces), Università di Torino, V. Giuria 7, 10125 Turin, Italy; (D.R.); (G.F.); (P.R.)
| | - Federica Celegato
- Istituto Nazionale di Ricerca Metrologica (INRIM), Str. Delle Cacce 91, 10135 Turin, Italy;
| | - Paola Rizzi
- Dipartimento di Chimica and Centro Interdipartimentale NIS (Nanostructured Interfaces and Surfaces), Università di Torino, V. Giuria 7, 10125 Turin, Italy; (D.R.); (G.F.); (P.R.)
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97
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Wu W, Fang H, Ma H, Wu L, Wang Q, Wang H. Self-Powered Rewritable Electrochromic Display based on WO 3-x Film with Mechanochemically Synthesized MoO 3-y Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20326-20335. [PMID: 33881294 DOI: 10.1021/acsami.1c01959] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Electrochromic displays with bistable color states provide a promising means toward transparent human-machine interfaces. However, the need for external power and the weak optical modulation in the visible light region of most electrochromic devices hinder their practical applications in displays. Here we prepare the MoO3-y/WO3-x films based on MoO3-y nanosheets, which show a dark blue color that matches the response of the eye and meets visual comfort standards compared to pure WO3-x film. By introducing the highly transparent Al3+ ion hydrogel layer, a convenient electrochromic device driven by the internal chemical potential has been designed. The device based on the MoO3-y /WO3-x film exhibits a high optical modulation in the whole visible light range and can operate at self-powered mode with fast response speed and excellent cycle stability. Moreover, we develop an ionic writing board based on the MoO3-y/WO3-x film to surmount the fixed display information issue in conventional electrochromic displays. The ionic writing board exhibits excellent visual display quality and realizes arbitrary writing with a self-powered characteristic. This work provides a simple mechanochemical synthesis procedure of MoO3-y nanosheets and an ingenious design of self-powered electrochromic devices, which will enable the development of next-generation high-performance electrochromic displays.
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Affiliation(s)
- Wenting Wu
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Huajing Fang
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Hailong Ma
- State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Liangliang Wu
- School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Qing Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Hong Wang
- School of Electronic and Information Engineering and State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China
- Department of Materials Science and Engineering & Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices, Southern University of Science and Technology, Shenzhen 518055, P. R. China
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98
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Yu C, Xu H, Gong Y, Chen R, Hui Z, Zhao X, Sun Y, Chen Q, Zhou J, Ji W, Sun G, Huang W. The Jahn-Teller Effect for Amorphization of Molybdenum Trioxide towards High-Performance Fiber Supercapacitor. RESEARCH 2021; 2021:6742715. [PMID: 33860233 PMCID: PMC8025085 DOI: 10.34133/2021/6742715] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/19/2021] [Indexed: 12/23/2022]
Abstract
Amorphous pseudocapacitive nanomaterials are highly desired in energy storage applications for their disordered crystal structures, fast electrochemical dynamics, and outstanding cyclic stability, yet hardly achievable using the state-of-the-art synthetic strategies. Herein, for the first time, high capacitive fiber electrodes embedded with nanosized amorphous molybdenum trioxide (A-MoO3-x) featuring an average particle diameter of ~20 nm and rich oxygen vacancies are obtained via a top-down method using α-MoO3 bulk belts as the precursors. The Jahn-Teller distortion in MoO6 octahedra due to the doubly degenerate ground state of Mo5+, which can be continuously strengthened by oxygen vacancies, triggers the phase transformation of α-MoO3 bulk belts (up to 30 μm long and 500 nm wide). The optimized fibrous electrode exhibits among the highest volumetric performance with a specific capacitance (CV) of 921.5 F cm−3 under 0.3 A cm−3, endowing the fiber-based weaveable supercapacitor superior CV and EV (energy density) of 107.0 F cm−3 and 9.5 mWh cm−3, respectively, together with excellent cyclic stability, mechanical robustness, and rate capability. This work demonstrates a promising strategy for synthesizing nanosized amorphous materials in a scalable, cost-effective, and controllable manner.
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Affiliation(s)
- Chenyang Yu
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Hai Xu
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Yujiao Gong
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Ruyi Chen
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Zengyu Hui
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Xi Zhao
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Yue Sun
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China
| | - Qiang Chen
- School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
| | - Jinyuan Zhou
- School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Wenxin Ji
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
| | - Gengzhi Sun
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.,Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Wei Huang
- Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.,Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), Xi'an 710072, China
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99
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Jin B, Hejazi S, Chu H, Cha G, Altomare M, Yang M, Schmuki P. A long-term stable aqueous aluminum battery electrode based on one-dimensional molybdenum-tantalum oxide nanotube arrays. NANOSCALE 2021; 13:6087-6095. [PMID: 33666210 DOI: 10.1039/d0nr08671a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Aluminum ion aqueous batteries (AIBs) are among the most promising candidates for high energy density devices due to the multivalent redox processes associated with Al3+ ion intercalation. However, only a few stable AIB electrode materials have been reported so far. MoO3 is a very promising electrode material due to its octahedral layered crystal structure which can accommodate multivalent cation by intercalation. However, the poor electrochemical stability of MoO3 and the sluggish intercalation kinetics of Al3+ ion in Mo oxides electrodes limit its practical application. In this work, we propose a strategy to overcome such shortcomings of MoO3 by fabricating electrodes composed of self-ordered one-dimensional (1D) MoTaOx nanotubes synthesized via electrochemical anodization of Mo-Ta alloy substrates. We show that this approach allows for direct incorporation of Ta in the Mo oxide nanotubes. The resulting MoTaOx nanotubes, composed of octahedral MoO3 and rhombohedral Mo2Ta2O11 phases, exhibit remarkable electrochemical stability and Al-ion storage properties in aqueous electrolytes that are superior to that of pristine Mo oxide or other most efficient electrode materials reported to date. Such MoTaOx nanotube-based electrodes can achieve a specific capacity of 1180 mA h cm-3 (337 mA h g-1, 141 μA h cm-2) at 1.25 A cm-3 (∼0.35 A g-1, 0.15 mA cm-2). More importantly, the capacity retention of such nanotube array electrodes remains above 83% of the initial capacity after 3000 cycles.
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Affiliation(s)
- Bowen Jin
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, PR China.
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Gu C, Li D, Zeng S, Jiang T, Shen X, Zhang H. Synthesis and defect engineering of molybdenum oxides and their SERS applications. NANOSCALE 2021; 13:5620-5651. [PMID: 33688873 DOI: 10.1039/d0nr07779h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Surface-enhanced Raman scattering (SERS) spectroscopy has been developed into a cross-disciplinary analytical technology through exploring various materials' Raman vibrational modes with ultra-high sensitivity and specificity. Although conventional noble-metal based SERS substrates have achieved great success, oxide-semiconductor-based SERS substrates are attracting researchers' intensive interest due to their merits of facile fabrication, high uniformity and tunable SERS characteristics. Among all the SERS active oxide semiconductors, molybdenum oxides (MoOx) possess exceptional advantages of high Raman enhancement factor, environmental stability, recyclable detection, etc. More interestingly, the SERS effect of the MoOx SERS substrates may involve both the electromagnetic enhancement mechanism and the chemical enhancement mechanism, which is determined by the stoichiometry and morphology of the material. Therefore, the focus of this review will be on two critical points: (1) synthesis and material engineering methods of the functional MoOx material and (2) MoOx SERS mechanism and performance evaluation. First, we review recent works on the MoOx preparation and material property tuning approaches. Second, the SERS mechanism and performance of various MoOx substrates are surveyed. In particular, the performance uniformity, enhancement factor and recyclability are evaluated. In the end, we discuss several challenges and open questions related to further promoting the MoOx as the SERS substrate for monitoring extremely low trace molecules and the theory for better understanding of the SERS enhancement mechanism.
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Affiliation(s)
- Chenjie Gu
- Institute of Photonics, Ningbo University, 818 Feng Hua Road 315211, Ningbo, China.
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