A one-step water based strategy for synthesizing hydrated vanadium pentoxide nanosheets from VO<sub>2</sub>(B) as free-standing electrodes for lithium battery applications

Nanostructured molybdenum oxides are promising materials for energy storage, catalysis, and electronic-based applications. Herein, we report the synthesis of MoO 3– x nanosheets ( x stands for oxygen vacancy) via an environmentally friendly liquid exfoliation approach. The process involves the reflux of the bulk α-MoO 3 precursor in water at 80 °C for 7 days. Electron microscopy and atomic force microscopy show that the MoO 3– x nanosheets are a few nanometer thick. MoO 3– x nanosheets exhibit near infrared plasmonic property that can be enhanced by visible light irradiation for a short time (10 min). Photocatalytic activity of MoO 3– x nanosheets for organic dye decolorization is examined using two different dyes (rhodamine B and methylene blue). Under visible light irradiation, MoO 3– x nanosheets make a rapid decolorization for the dye molecules in less than 10 min. The simple synthesis procedure of MoO 3– x nanosheets combined with their remarkable photochemical properties reflect the high potential for using the nanosheets in a variety of applications.

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“…Thus, large efforts have been focused on the development of environmentally friendly approaches. 21,22,24…”

Section: Introductionmentioning

confidence: 99%

Facile Water-Based Strategy for Synthesizing MoO_3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

et al. 2018

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“…As‐prepared V 2 O 5 nanosheets have the size of several hundred nanometers (Figure b), and the thickness was confirmed to be 2.1–3.8 nm (Figure c,d), as the layer‐to‐layer distance of V 2 O 5 is 0.43 nm along [001] direction. Spontaneous liquid exfoliation strategy has also been also reported for synthesizing hydrated V 2 O 5 nanosheets from bulk VO 2 (B) . Water molecules are suspected to be intercalated to the interlayer spaces, swelling the crystal and weakening the interlayer interactions.…”

Section: Synthesis Of Vanadium Oxide Nanostructuresmentioning

confidence: 99%

“…Spontaneous liquid exfoliation strategy has also been also reported for synthesizing hydrated V 2 O 5 nanosheets from bulk VO 2 (B). [93] Water molecules are suspected to be intercalated to the interlayer spaces, swelling the crystal and weakening the interlayer interactions. Finally, the layers have been exfoliated at 60 °C for 6 days.…”

Section: One-dimensional V 2 O 5 Nanostructuresmentioning

confidence: 99%

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

Liu

Tang

et al. 2017

Advanced Energy Materials

221

127

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Vanadium oxides are known for their multioxidation states and diverse crystalline structures. Owing to their excellent interactions with molecules or ions, outstanding catalytic activities, and/or strong electron–electron correlations, nanostructured vanadium oxides have been extensively studied for energy conversion in the recent years. Here is a review of the recent advances in the development of nanostructured vanadium oxides and their applications. The synthesis strategies and structural properties of various vanadium oxide nanostructures, including vanadium dioxide (VO2), vanadium pentoxide (V2O5), and others, are summarized. The applications of vanadium oxides in energy conversion are discussed, focusing on three important types of energy sources: chemical energy (LIBs, pseudocapacitors and fuel cells), solar energy (photovoltaics and photocatalytic hydrogen evolutions), and heat (thermoelectric generation). Finally, conclusion with our remarks on the prospects of nanostructured vanadium oxides in energy conversion are provided.

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“…The research interest in rechargeable batteries and supercapacitors keeps growing due to their application in a variety of technologies such as portable electronic devices, hybrid vehicles, grid storage, and so on. [ 1–8 ] Li‐ion batteries have been developed to commercial application over last 30 years; [ 9–12 ] however, rechargeable nonaqueous batteries based on multivalent ions (e.g., Mg 2+ , Ca 2+ , and Zn 2+ ) have attracted a lot of interest in the last few years due to their abundancy in nature and their potential to provide a reasonable energy density compared with the state‐of‐art Li‐ion batteries. [ 13–17 ] Among them, nonaqueous Zn batteries are interesting to consider, as metallic zinc anode has a higher volumetric capacity compared with metallic Mg and Ca anodes (5851 mAh cm −3 for Zn compared with 3833 and 2073 mAh cm −3 for Mg and Ca, respectively).…”

Section: Introductionmentioning

confidence: 99%

Acetonitrile‐Based Electrolytes for Rechargeable Zinc Batteries

et al. 2020

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Herein, Zn plating–stripping onto metallic Zn using a couple of acetonitrile (AN)‐based electrolytes (0.5 m Zn(TFSI)2/AN and 0.5 m Zn(CF3SO3)2/AN) is studied. Both electrolytes show a reversible Zn plating/stripping over 1000 cycles at different applied current densities varying from 1.25 to 10 mA cm−2. The overpotentials of Zn plating–stripping over 500 cycles at constant current of 1.25 and 10 mA cm−2 are ±0.05 and ±0.2 V, respectively. X‐ray photoelectron spectroscopy analysis reveals that no decomposition product is formed on the Zn surface. The anodic stability of four different current collectors of aluminum foil (Al), carbon‐coated aluminum foil (C/Al), TiN‐coated titanium foil (TiN/Ti), and multiwalled carbon nanotube paper (MWCNT‐paper) is tested in both electrolytes. As a general trend, the current collectors have a higher anodic stability in Zn(TFSI)2/AN compared with Zn(CF3SO3)2/AN. The Al foil displays the highest anodic stability of ≈2.25 V versus Zn2+/Zn in Zn(TFSI)2/AN electrolyte. The TiN/Ti shows a comparable anodic stability with that of Al foil, but its anodic current density is higher than Al. The promising reversibility of the Zn plating/stripping combined with the anodic stability of Al and TiN/Ti current collectors paves the way for establishing highly reversible Zn‐ion batteries.

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A one-step water based strategy for synthesizing hydrated vanadium pentoxide nanosheets from VO₂(B) as free-standing electrodes for lithium battery applications

Abstract: V2O5·0.55H2O nanosheets synthesizedviaa water based technique, and showing promising lithium-ion storage capacity.

Cited by 42 publications

References 95 publications

Facile Water-Based Strategy for Synthesizing MoO_3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

Facile Water-Based Strategy for Synthesizing MoO_3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

Acetonitrile‐Based Electrolytes for Rechargeable Zinc Batteries

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A one-step water based strategy for synthesizing hydrated vanadium pentoxide nanosheets from VO2(B) as free-standing electrodes for lithium battery applications

Abstract: V2O5·0.55H2O nanosheets synthesizedviaa water based technique, and showing promising lithium-ion storage capacity.

Cited by 42 publications

References 95 publications

Facile Water-Based Strategy for Synthesizing MoO3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

Facile Water-Based Strategy for Synthesizing MoO3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

Recent Advances in Nanostructured Vanadium Oxides and Composites for Energy Conversion

Acetonitrile‐Based Electrolytes for Rechargeable Zinc Batteries

Contact Info

Product

Resources

About

A one-step water based strategy for synthesizing hydrated vanadium pentoxide nanosheets from VO₂(B) as free-standing electrodes for lithium battery applications

Facile Water-Based Strategy for Synthesizing MoO_3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation

Facile Water-Based Strategy for Synthesizing MoO_3–x Nanosheets: Efficient Visible Light Photocatalysts for Dye Degradation