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da Silva Júnior MG, Arzuza LCC, Sales HB, Farias RMDC, Neves GDA, Lira HDL, Menezes RR. A Brief Review of MoO 3 and MoO 3-Based Materials and Recent Technological Applications in Gas Sensors, Lithium-Ion Batteries, Adsorption, and Photocatalysis. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7657. [PMID: 38138799 PMCID: PMC10745064 DOI: 10.3390/ma16247657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/01/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
Molybdenum trioxide is an abundant natural, low-cost, and environmentally friendly material that has gained considerable attention from many researchers in a variety of high-impact applications. It is an attractive inorganic oxide that has been widely studied because of its layered structure, which results in intercalation ability through tetrahedral/octahedral holes and extension channels and leads to superior charge transfer. Shape-related properties such as high specific capacities, the presence of exposed active sites on the oxygen-rich structure, and its natural tendency to oxygen vacancy that leads to a high ionic conductivity are also attractive to technological applications. Due to its chemistry with multiple valence states, high thermal and chemical stability, high reduction potential, and electrochemical activity, many studies have focused on the development of molybdenum oxide-based systems in the last few years. Thus, this article aims to briefly review the latest advances in technological applications of MoO3 and MoO3-based materials in gas sensors, lithium-ion batteries, and water pollution treatment using adsorption and photocatalysis techniques, presenting the most relevant and new information on heterostructures, metal doping, and non-stoichiometric MoO3-x.
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Affiliation(s)
- Mário Gomes da Silva Júnior
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Av. Aprígio Veloso 882, Campina Grande 58429-900, PB, Brazil; (L.C.C.A.); (H.B.S.); (R.M.d.C.F.); (G.d.A.N.); (H.d.L.L.)
| | | | | | | | | | | | - Romualdo Rodrigues Menezes
- Laboratory of Materials Technology (LTM), Department of Materials Engineering, Federal University of Campina Grande (UFCG), Av. Aprígio Veloso 882, Campina Grande 58429-900, PB, Brazil; (L.C.C.A.); (H.B.S.); (R.M.d.C.F.); (G.d.A.N.); (H.d.L.L.)
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2
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Wang PH, Yu CM, Yu XQ, Wang MS, Guo GC. UV-vis/X-ray/thermo-induced synthesis and UV-SWIR photoresponsive property of a mixed-valence viologen molybdate semiconductor. Chem Commun (Camb) 2021; 57:5550-5553. [PMID: 33969841 DOI: 10.1039/d1cc00614b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new design strategy through the synergy of Mo(vi)-Mo(v) intervalence charge transfer and π(radical)-π(radical/cation) interactions is proposed to obtain semiconductors with photoresponsive ranges covering the whole UV-SWIR (ultraviolet-shortwave near-infrared; ca. 250-3000 nm) region. With this strategy, a viologen-based molybdate semiconductor with a UV-SWIR photoresponsive range was obtained through UV/X-ray irradiation or thermal annealing. The thermally annealed semiconductor has the highest conversion and the best photocurrent response in the range of 355-2400 nm.
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Affiliation(s)
- Peng-Hao Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
| | - Cao-Ming Yu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
| | - Xiao-Qing Yu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
| | - Ming-Sheng Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
| | - Guo-Cong Guo
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
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3
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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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4
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Understanding the synergistic role of Pt-mediated MoO3 photoanode with self-photorechargeability during illuminated and non-illuminated conditions: A combined experimental and density functional theory study. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tang K, Zhang Y, Shi Y, Cui J, Shu X, Wang Y, Qin Y, Liu J, Tan HH, Wu Y. Fabrication of WO3/TiO2 core-shell nanowire arrays: Structure design and high electrochromic performance. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2019.135189] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Nanostructured MoO 3 for Efficient Energy and Environmental Catalysis. Molecules 2019; 25:molecules25010018. [PMID: 31861563 PMCID: PMC6983150 DOI: 10.3390/molecules25010018] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/11/2019] [Accepted: 12/15/2019] [Indexed: 11/27/2022] Open
Abstract
This paper mainly focuses on the application of nanostructured MoO3 materials in both energy and environmental catalysis fields. MoO3 has wide tunability in bandgap, a unique semiconducting structure, and multiple valence states. Due to the natural advantage, it can be used as a high-activity metal oxide catalyst, can serve as an excellent support material, and provide opportunities to replace noble metal catalysts, thus having broad application prospects in catalysis. Herein, we comprehensively summarize the crystal structure and properties of nanostructured MoO3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO3 are also discussed.
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Tong Z, Liu S, Li X, Zhao J, Li Y. Self-supported one-dimensional materials for enhanced electrochromism. NANOSCALE HORIZONS 2018; 3:261-292. [PMID: 32254076 DOI: 10.1039/c8nh00016f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A reversible, persistent electrochromic change in color or optical parameter controlled by a temporarily applied electrical voltage is attractive because of its enormous display and energy-related applications. Due to the electrochemical and structural advantages, electrodes based on self-supported one-dimensional (1D) nanostructured materials have become increasingly important, and their impacts are particularly significant when considering the ease of assembly of electrochromic devices. This review describes recent advances in the development of self-supported 1D nanostructured materials as electrodes for enhanced electrochromism. Current strategies for the design and morphology control of self-supported electrodes fabricated using templates, anodization, vapor deposition, and solution techniques are outlined along with demonstrating the influences of nanostructures and components on the electrochemical redox kinetics and electrochromic performance. The applications of self-supported 1D nanomaterials in the emerging bifunctional devices are further illustrated.
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Affiliation(s)
- Zhongqiu Tong
- School of Materials Science and Engineering, Southwest Petroleum University, Chengdu 610500, China
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8
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Multi-colored electrochromic devices based on mixed mono- and bi-substituted 4,4′-bipyridine derivatives containing an ester group. J APPL ELECTROCHEM 2018. [DOI: 10.1007/s10800-018-1190-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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9
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Wei YQ, Sun C, Chen QS, Wang MS, Guo GC. Significant enhancement of conductance of a hybrid layered molybdate semiconductor by light or heat. Chem Commun (Camb) 2018; 54:14077-14080. [DOI: 10.1039/c8cc08220k] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Introduction of the viologen cation, a well-known electron acceptor, into molybdate layers led to a dramatic change in the conductance of the 2D hybrid material in the process of photo-induced and thermo-induced coloration.
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Affiliation(s)
- Yong-Qin Wei
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- People's Republic of China
| | - Cai Sun
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- People's Republic of China
| | - Qing-Song Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- People's Republic of China
| | - Ming-Sheng Wang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- People's Republic of China
| | - Guo-Cong Guo
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- People's Republic of China
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10
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Sun S, Sun Y, Wen J, Zhang B, Liao X, Yin G, Huang Z, Pu X. MoO3−x-deposited TiO2 nanotubes for stable and high-capacitance supercapacitor electrodes. RSC Adv 2018; 8:21823-21828. [PMID: 35541697 PMCID: PMC9081865 DOI: 10.1039/c8ra02744g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 06/05/2018] [Indexed: 02/04/2023] Open
Abstract
Here we report the supercapacitive properties of a novel MoO3−x/TiO2 nanotube composite prepared by a facile galvanostatic deposition technique and subsequently thermal treatment in an argon atmosphere between 350 °C and 550 °C.
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Affiliation(s)
- Shupei Sun
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Yu Sun
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Jiang Wen
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Bo Zhang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Xiaoming Liao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Guangfu Yin
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Zhongbing Huang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Ximing Pu
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
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11
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de Castro IA, Datta RS, Ou JZ, Castellanos-Gomez A, Sriram S, Daeneke T, Kalantar-Zadeh K. Molybdenum Oxides - From Fundamentals to Functionality. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1701619. [PMID: 28815807 DOI: 10.1002/adma.201701619] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 04/27/2017] [Indexed: 05/20/2023]
Abstract
The properties and applications of molybdenum oxides are reviewed in depth. Molybdenum is found in various oxide stoichiometries, which have been employed for different high-value research and commercial applications. The great chemical and physical characteristics of molybdenum oxides make them versatile and highly tunable for incorporation in optical, electronic, catalytic, bio, and energy systems. Variations in the oxidation states allow manipulation of the crystal structure, morphology, oxygen vacancies, and dopants, to control and engineer electronic states. Despite this overwhelming functionality and potential, a definitive resource on molybdenum oxide is still unavailable. The aim here is to provide such a resource, while presenting an insightful outlook into future prospective applications for molybdenum oxides.
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Affiliation(s)
| | | | - Jian Zhen Ou
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | | | - Sharath Sriram
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
| | - Torben Daeneke
- School of Engineering, RMIT University, Melbourne, VIC, 3000, Australia
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12
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Khan AQ, Yuan S, Niu S, Zheng L, Li W, Zeng H. Synthesis of molybdenum oxide-titanium dioxide nanocomposites with ultrashort laser ablation in water. OPTICS EXPRESS 2017; 25:A539-A546. [PMID: 28788884 DOI: 10.1364/oe.25.00a539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Nanocomposites of Molybdenum oxide (MoO3) and Titanium dioxide (TiO2) were synthesized with femtosecond laser ablation of the pelleted powder in water. The pressing with Cold Isostatic press (CIP) provides facile method for pelletization of the oxides mixture. With this method the nanocomposites can be synthesized without replacement of the target during laser ablation. After laser ablation in water the stable MoO3-TiO2 nanocomposites were synthesized. The morphology of the synthesized nanocomposites was investigated with transmission electron microscopy. While the band gap modifications of the synthesized nanocomposites were witnessed with UV-Visible diffuse reflectance spectroscopy analysis. Besides, the generated nanocomposites were used for photovoltaic and photocatalytic applications. The nanocomposites exhibit significant improvement in the rate of photo conversion and photodegradation as well.
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13
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Gao L, Gan W, Qiu Z, Zhan X, Qiang T, Li J. Preparation of heterostructured WO 3/TiO 2 catalysts from wood fibers and its versatile photodegradation abilities. Sci Rep 2017; 7:1102. [PMID: 28439084 PMCID: PMC5430625 DOI: 10.1038/s41598-017-01244-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 03/28/2017] [Indexed: 11/09/2022] Open
Abstract
A facile route was adopted to synthesize heterostructured WO3/TiO2 photocatalysts from wood fibers through a two-steps hydrothermal method and a calcination process. The prepared WO3/TiO2-wood fibers were used as photocatalysts under UV irradiation for photodegradation of rhodamine B, methylene blue and methyl orange. In calcination process, the wood fibers acted as carbon substrates to prepare the WO3/TiO2 photocatalysts with high surface area and unique morphology. Thus, the significant enhanced photodegradation efficiency of the organic pollutants with the WO3/TiO2-wood fibers under UV irradiation was obtained. The photodegradation rates are measured which confirms the highest performance of the WO3/TiO2-wood fibers after calcination in comparison to the TiO2-wood fibers after calcination and the pure WO3/TiO2 after calcination. Moreover, the photodegradation efficiency of the WO3/TiO2-wood fibers after calcination under visible light is high. Our results demonstrated that the WO3/TiO2-wood fibers after calcination are a promising candidate for wastewater treatment in practical application.
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Affiliation(s)
- Likun Gao
- Key Laboratory of Biobased Material Science & Technology (Education Ministry), Northeast Forestry University, Harbin, 150040, P.R. China.
- Research Center of Wood Bionic Intelligent Science, Northeast Forestry University, Harbin, 150040, P.R. China.
| | - Wentao Gan
- Key Laboratory of Biobased Material Science & Technology (Education Ministry), Northeast Forestry University, Harbin, 150040, P.R. China
- Research Center of Wood Bionic Intelligent Science, Northeast Forestry University, Harbin, 150040, P.R. China
| | - Zhe Qiu
- Key Laboratory of Biobased Material Science & Technology (Education Ministry), Northeast Forestry University, Harbin, 150040, P.R. China
- Research Center of Wood Bionic Intelligent Science, Northeast Forestry University, Harbin, 150040, P.R. China
| | - Xianxu Zhan
- Dehua TB New Decoration Material Co., Ltd, Huzhou, 313200, P.R. China
| | - Tiangang Qiang
- Key Laboratory of Biobased Material Science & Technology (Education Ministry), Northeast Forestry University, Harbin, 150040, P.R. China
- Research Center of Wood Bionic Intelligent Science, Northeast Forestry University, Harbin, 150040, P.R. China
| | - Jian Li
- Key Laboratory of Biobased Material Science & Technology (Education Ministry), Northeast Forestry University, Harbin, 150040, P.R. China
- Research Center of Wood Bionic Intelligent Science, Northeast Forestry University, Harbin, 150040, P.R. China
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14
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Sun S, Liao X, Sun Y, Yin G, Yao Y, Huang Z, Pu X. Facile synthesis of a α-MoO3 nanoplate/TiO2 nanotube composite for high electrochemical performance. RSC Adv 2017. [DOI: 10.1039/c7ra01164d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel α-MoO3/TiO2 composite electrode material for high performance supercapacitor applications was synthesized using a facile electrodeposition technique.
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Affiliation(s)
- Shupei Sun
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Xiaoming Liao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Yu Sun
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Guangfu Yin
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Yadong Yao
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Zhongbing Huang
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
| | - Ximing Pu
- College of Materials Science and Engineering
- Sichuan University
- Chengdu
- China
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15
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Zhang H, Jeon KW, Seo DK. Equipment-Free Deposition of Graphene-Based Molybdenum Oxide Nanohybrid Langmuir-Blodgett Films for Flexible Electrochromic Panel Application. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21539-44. [PMID: 27482604 DOI: 10.1021/acsami.6b04985] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The potential electrochromic application of graphene-based nanohybrids is hampered by the challenges in interfacing the electrochromic nanoparticles with graphene at atomic scale and in fabricating their thin film on the substrate through a scalable method. In an effort to overcome these challenges, we demonstrate a highly dispersible graphene-based molybdenum oxide nanohybrid (mRGO-MoO3-x) for flexible electrochromic application. With only a squeeze pipet, mRGO-MoO3-x could be deposited with a high coverage on various substrates through a scalable equipment-free Langmuir-Blodgett film deposition method. By taking advantage of high transmittance benefited from its remarkable thinness, the mRGO-MoO3-x Langmuir-Blodgett film shows a superior reversible electrochromic property with high coloration efficiency on both hard and flexible substrates.
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Affiliation(s)
- Haojie Zhang
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287-1604, United States
| | - Ki-Wan Jeon
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287-1604, United States
| | - Dong-Kyun Seo
- School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287-1604, United States
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Mahoney L, Rasalingam S, Wu CM, Koodali RT. Nanocasting of Periodic Mesoporous Materials as an Effective Strategy to Prepare Mixed Phases of Titania. Molecules 2015; 20:21881-95. [PMID: 26670222 PMCID: PMC6331994 DOI: 10.3390/molecules201219812] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 12/01/2015] [Accepted: 12/03/2015] [Indexed: 11/16/2022] Open
Abstract
Mesoporous titanium dioxide materials were prepared using a nanocasting technique involving silica SBA-15 as the hard-template. At an optimal loading of titanium precursor, the hexagonal periodic array of pores in SBA-15 was retained. The phases of titanium dioxide could be easily varied by the number of impregnation cycles and the nature of titanium alkoxide employed. Low number of impregnation cycles produced mixed phases of anatase and TiO2(B). The mesoporous TiO2 materials were tested for solar hydrogen production, and the material consisting of 98% anatase and 2% TiO2(B) exhibited the highest yield of hydrogen from the photocatalytic splitting of water. The periodicity of the pores was an important factor that influenced the photocatalytic activity. This study indicates that mixed phases of titania containing ordered array of pores can be prepared by using the nanocasting strategy.
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Affiliation(s)
- Luther Mahoney
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Shivatharsiny Rasalingam
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Chia-Ming Wu
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
| | - Ranjit T Koodali
- Department of Chemistry, University of South Dakota, 414 E. Clark Street, Vermillion, 57069 SD, USA.
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17
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Ab Kadir R, Rani RA, Alsaif MMYA, Ou JZ, Wlodarski W, O'Mullane AP, Kalantar-Zadeh K. Optical gas sensing properties of nanoporous Nb2O5 films. ACS APPLIED MATERIALS & INTERFACES 2015; 7:4751-4758. [PMID: 25685899 DOI: 10.1021/am508463g] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Nanoporous Nb2O5 has been previously demonstrated to be a viable electrochromic material with strong intercalation characteristics. Despite showing such promising properties, its potential for optical gas sensing applications, which involves the production of ionic species such as H(+), has yet to be explored. Nanoporous Nb2O5 can accommodate a large amount of H(+) ions in a process that results in an energy bandgap change of the material which induces an optical response. Here, we demonstrate the optical hydrogen gas (H2) sensing capability of nanoporous anodic Nb2O5 with a large surface-to-volume ratio prepared via a high temperature anodization method. The large active surface area of the film provides enhanced pathways for efficient hydrogen adsorption and dissociation, which are facilitated by a thin layer of Pt catalyst. We show that the process of H2 sensing causes optical modulations that are investigated in terms of response magnitudes and dynamics. The optical modulations induced by the intercalation process and sensing properties of nanoporous anodic Nb2O5 shown in this work can potentially be used for future optical gas sensing systems.
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Affiliation(s)
- Rosmalini Ab Kadir
- School of Electrical and Computer Engineering, RMIT University , Melbourne, Victoria 3001, Australia
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18
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Zhao C, Du F, Wang J. Flower-like nickel oxide micro/nanostructures: synthesis and enhanced electrochromic properties. RSC Adv 2015. [DOI: 10.1039/c5ra05334j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
NiO micro/nanoflowers synthesized by hydrothermal treatment followed by calcination exhibit enhanced electrochromic properties.
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Affiliation(s)
- Congcong Zhao
- School of Environmental and Materials Engineering
- College of Engineering
- Shanghai Second Polytechnic University
- Shanghai 201209
- China
| | - Fanglin Du
- College of Materials Science and Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- China
| | - Jinmin Wang
- School of Environmental and Materials Engineering
- College of Engineering
- Shanghai Second Polytechnic University
- Shanghai 201209
- China
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Gui Q, Xu Z, Zhang H, Cheng C, Zhu X, Yin M, Song Y, Lu L, Chen X, Li D. Enhanced photoelectrochemical water splitting performance of anodic TiO(2) nanotube arrays by surface passivation. ACS APPLIED MATERIALS & INTERFACES 2014; 6:17053-8. [PMID: 25198058 DOI: 10.1021/am504662w] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
One-dimensional anodic titanium oxide nanotube (TONT) arrays provide a direct pathway for charge transport, and thus hold great potential as working electrodes for electrochemical energy conversion and storage devices. However, the prominent surface recombination due to the large amount surface defects hinders the performance improvement. In this work, the surface states of TONTs were passivated by conformal coating of high-quality Al2O3 onto the tubular structures using atomic layer deposition (ALD). The modified TONT films were subsequently employed as anodes for photoelectrochemical (PEC) water splitting. The photocurrent (0.5 V vs Ag/AgCl) recorded under air mass 1.5 global illumination presented 0.8 times enhancement on the electrode with passivation coating. The reduction of surface recombination rate is responsible for the substantially improved performance, which is proposed to have originated from a decreased interface defect density in combination with a field-effect passivation induced by a negative fixed charge in the Al2O3 shells. These results not only provide a physical insight into the passivation effect, but also can be utilized as a guideline to design other energy conversion devices.
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Affiliation(s)
- Qunfang Gui
- Shanghai Advanced Research Institute , Chinese Academy of Sciences, 99 Haike Road, Zhangjiang Hi-Tech Park, Pudong, Shanghai 201210, China
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Lee K, Mazare A, Schmuki P. One-dimensional titanium dioxide nanomaterials: nanotubes. Chem Rev 2014; 114:9385-454. [PMID: 25121734 DOI: 10.1021/cr500061m] [Citation(s) in RCA: 506] [Impact Index Per Article: 50.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kiyoung Lee
- Department of Materials Science WW4-LKO, University of Erlangen-Nuremberg , Martensstrasse 7, 91058 Erlangen, Germany
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Ibrahem MA, Wu FY, Mengistie DA, Chang CS, Li LJ, Chu CW. Direct conversion of multilayer molybdenum trioxide to nanorods as multifunctional electrodes in lithium-ion batteries. NANOSCALE 2014; 6:5484-5490. [PMID: 24728234 DOI: 10.1039/c4nr00692e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this study we prepared molybdenum trioxide (MoO3) nanorods having average lengths of 0.5-1.5 μm and widths of approximately 100-200 nm through a one-step mechanical break-down process involving favorable fracturing along the crystal direction. We controlled the dimensions of the as-prepared nanorods by applying various imposing times (15-90 min). The nanorods prepared over a reaction time of 90 min were, on average, much shorter and narrower relative to those obtained over 30 min. Evaluations of lithium-ion storage properties revealed that the electrochemical performance of these nanorods was much better than that of bulk materials. As cathodes, the nanorods could deliver a high specific capacity (>315 mA h g(-1)) with losses of less than 2% in the first cycle at a rate of 30 mA g(-1); as anodes, the specific capacity was 800 mA h g(-1) at a rate of 50 mA g(-1). Relative to α-MoO3 microparticles, these nanorods displayed significantly enhanced lithium-ion storage properties with higher reversible capacities and better rate performance, presumably because their much shorter diffusion lengths and higher specific surface areas allowed more-efficient insertion/deinsertion of lithium ions during the charge/discharge process. Accordingly, enhanced physical and/or chemical properties can be obtained through appropriate nanostructuring of materials.
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Guan D, Li J, Gao X, Yuan C. Effects of amorphous and crystalline MoO3coatings on the Li-ion insertion behavior of a TiO2nanotube anode for lithium ion batteries. RSC Adv 2014. [DOI: 10.1039/c3ra44849e] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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