Cuprous oxide (Cu2O) crystals with tailored architectures: A comprehensive review on synthesis, fundamental properties, functional modifications and applications

Sun, Shaodong; Zhang, Xiaojing; Yang, Qing; Liang, Shuhua; Zhang, Xiaozhe; Yang, Zhimao

doi:10.1016/j.pmatsci.2018.03.006

Cited by 217 publications

(101 citation statements)

References 577 publications

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“…Herein, we comprehensively summarize the crystal structure and properties of nanostructured MoO 3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO 3 are also discussed.Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].Molybdenum oxide (MoO 3 ), a kind of transition metal oxide with a n-type semiconducting, nontoxic nature and high stability, has attracted a lot of attention. In particular, nanostructured MoO 3 has demonstrated superior properties to bulk MoO 3 , which is successfully employed in rechargeable batteries [13], capacitors [14], photocatalysis [15], electrocatalysis [16], gas sensors [17], and other applications [6].…”

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confidence: 99%

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Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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This paper mainly focuses on the application of nanostructured MoO 3 materials in both energy and environmental catalysis fields. MoO 3 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 MoO 3 and highlight the recent significant research advancements in energy and environmental catalysis. Several current challenges and perspective research directions based on nanostructured MoO 3 are also discussed.Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].Molybdenum oxide (MoO 3 ), a kind of transition metal oxide with a n-type semiconducting, nontoxic nature and high stability, has attracted a lot of attention. In particular, nanostructured MoO 3 has demonstrated superior properties to bulk MoO 3 , which is successfully employed in rechargeable batteries [13], capacitors [14], photocatalysis [15], electrocatalysis [16], gas sensors [17], and other applications [6]. The extended tunnels between the MoO 6 octahedra in MoO 3 are suitable for insert/de-insert mobile ions, such as H + and Li + , and multiple oxidation states can enable rich redox reactions. Moreover, the superiorities of low cost, chemical stability, high theoretical specific capacity (1117 mA·h/g), and the environmentally friendly nature make nanostructured MoO 3 exceptional electrode materials for rechargeable batteries capacitors [13,18]. MoO 3 has been investigated as the photocatalyst in terms of its anisotropic layered structure for absorbing UV, as well as visible light. Introducing a defect band by H + intercalation or oxygen vacancies can create defect state and decrease MoO 3 bandgap, which effectively increase the photocatalytic activity [15]. Each oxygen atom bonds to only one molybdenum atom of MoO 6 octahedra, and oxygen vacancy generates Mo dangling bond. MoO 3 favors the adsorption of water molecules in oxygen vacancies, which act as electron acceptors and consequently reduce the energy barrier make it highly reactive for electrocatalysis [2,19]. As a good gasochromic material, MoO 3 has efficient positive-ion accommodation and good charge transfer, and it can be used as an optical-based gas sensor. Moreover, relying on the change in the conductance of the oxide-on-gas adsorption/reaction, MoO 3 has been used for NO, NO 2 , CO, H 2 , NH 3 , and other gases [17]. The unique structure strongly affects the performances. Large efforts have been made to obtain nanostructured MoO 3 with appealing properties by engineering multiple synthetic strategies for the applications in various fields. A variety of methods have been developed, including hydrothermal met...

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confidence: 99%

“…Molecules 2020, 25, 18 2 of 26 applications in energy and environmental catalysis on account of their relatively low cost, high activity, and stability [9][10][11][12].…”

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confidence: 99%

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

et al. 2019

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“…Cuprous oxide Cu 2 O can operate as a gas sensor at relatively low temperatures [73,74]. The conductivity of Cu 2 O is mainly determined by the hole carrier density of the inter-granular contact region.…”

Section: Basic Properties Of Chosen Metal Oxidesmentioning

confidence: 99%

“…FESEM images of Cu2O polyhedrons with different volume ratio R of {100} to {111} where (a) R=0.58, (b) R=0.70, (c) R=0.87, (d) R=1.0, (e) R=1.15, (f) R=1 73. with corresponding geometry 3D models (g-l).…”

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confidence: 99%

Surface-Controlled Photocatalysis and Chemical Sensing of TiO2, α-Fe2O3, and Cu2O Nanocrystals

et al. 2019

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A relatively new approach to the design of photocatalytic and gas sensing materials is to use the shape-controlled nanocrystals with well-defined facets exposed to light or gas molecules. An abrupt increase in a number of papers on the synthesis and characterization of metal oxide semiconductors such as a TiO2, α-Fe2O3, Cu2O of low-dimensionality, applied to surface-controlled photocatalysis and gas sensing, has been recently observed. The aim of this paper is to review the work performed in this field of research. Here, the focus is on the mechanism and processes that affect the growth of nanocrystals, their morphological, electrical, and optical properties and finally their photocatalytic as well as gas sensing performance.

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“…One-dimensional semiconductor materials with many advantages, such as lower material consumption, efficient coupling with sunlight, effective light-to-electricity conversion capabilities, and drastically different physicochemical behaviors from bulk materials have been reported for photovoltaic applications [ 17 , 18 , 19 ]. Therefore, the synthesis of one-dimensional Cu 2 O is widely studied, with methods such as electrodeposition [ 20 ], liquid phase reducing method [ 21 ], oxidation method [ 22 ] and solvothermal method [ 23 ] all being explored.…”

Section: Introductionmentioning

confidence: 99%

A Template-Free Microwave Synthesis of One-Dimensional Cu2O Nanowires with Desired Photocatalytic Property

et al. 2018

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One-dimensional Cu2O nanowires were successfully prepared with a template-free microwave synthesis. Neither a surfactant was needed (to induce the growth), nor a long reaction time was required for this method. The structural investigation confirmed the successful preparation of Cu2O. The morphology images showed that the radial size of the Cu2O nanowires was 10 nm. The possible growth mechanism was hypothesized according to morphology evolution and references. A series of time-dependent experiments indicated that as time increased, Cu2O primary particles grew radially into nanowires under microwave energy irradiation. The condition-variable tests revealed that the suitable quantity of NaOH played a vital role in Cu2O nanowire formation. The photocatalytic property of the sample was investigated by degradation of methyl orange under the irradiation of visible light at room temperature. Benefiting from its unique large surface area, 4 mg of the prepared catalyst degraded 73% of methyl orange (10 mg L−1) in 120 min.

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Cuprous oxide (Cu2O) crystals with tailored architectures: A comprehensive review on synthesis, fundamental properties, functional modifications and applications

Cited by 217 publications

References 577 publications

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Nanostructured MoO3 for Efficient Energy and Environmental Catalysis

Surface-Controlled Photocatalysis and Chemical Sensing of TiO2, α-Fe2O3, and Cu2O Nanocrystals

A Template-Free Microwave Synthesis of One-Dimensional Cu2O Nanowires with Desired Photocatalytic Property

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