Synthesis of some transition MWO4 (M: Mn, Fe, Co, Ni, Cu, Zn, Cd) nanostructures by hydrothermal method

Pourmasoud, Saeid; Eghbali-Arani, Mohammad; Ameri, Vahid; Rahimi‐Nasrabadi, Mehdi; Ahmadi, Farhad; Sobhani‐Nasab, Ali

doi:10.1007/s10854-019-01179-2

Cited by 8 publications

(3 citation statements)

References 209 publications

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“…In anticipation of an increase in Mn concentration due to a higher amount of Mn 2+ ion, the dissolution of Mn 2+ and WO 4 2– is slow, and the growth process is suspended. Nanocrystals are aggregated to form a nano-flower structure …”

Section: Resultsmentioning

confidence: 99%

“…Nanocrystals are aggregated to form a nano-flower structure. 37 To gain more insights into the Mn x WO 4 nanostructures assembly, HR-TEM, and STEM elemental mapping analyses were performed. Similar to the FE-SEM, the HR-TEM micrographs of MnWO 4 and Mn 1.25 WO 4 (Figure 2a,b) indicated the formation of nanorods and flower-like structures, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Prabu

Manikandan

Samal

et al. 2023

ACS Appl. Nano Mater.

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Activation of the C−H bond in cyclohexane (CYH) and methane is a crucial step to obtain desirable oxygenated products using nanostructured catalyst and is a great challenge and an efficient route to mitigate the inauspicious effects of climate change. The active sites were identified using XRD, HR-TEM, SEM, N 2 sorption analysis, TPR, Raman, XPS, TGA, in situ DRIFT, XAS, etc. In optimal reaction conditions, 46% of CYH was converted into adipic acid (AA) on Mn x WO 4 nanostructures within 6 h. The recyclability test confirmed the catalyst heterogeneity, which revealed no appreciable loss of catalytic activity even after three consecutive reactions. In situ DRIFT study reveals that CYH is oxidized to cyclohexanone and cyclohexanol (KA oil) and is further oxidized to AA via carboxylate intermediates. DFT studies disclosed that MnOx species are responsible for the C−H activation of CYH, and the Mn 2+/ Mn 3+ redox centers play a vital role in the absorption of KA oil to form AA. Herein, we demonstrated the significant role of the "MnOx" species and that adequate Lewis and Bronsted acidic sites, redox centers of (Mn 2+ /Mn 3+ ), and lattice oxygen are accountable for the CYH conversion toward the AA. Additionally, we have reported the oxidation of methane to methanol (146 μmole per gram of catalyst) in the presence of water at 75 °C without over-oxidation products.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Prabu

Manikandan

Samal

et al. 2023

ACS Appl. Nano Mater.

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“…27,28 Zero-dimensional (0-D) copper-based nanomaterials are of great importance in the development of electrochemical biosensors owing to their unique nanostructures. [29][30][31][32] Commonly, when used as electrochemical catalysts in practice, these metal nanoparticles (NPs) are loaded onto inorganic/organic conductive substrates to ensure uniform dispersion and good electron transport between the NPs and the electrode surface to achieve high sensitivity and low detection limits for the sensors. 28,32 Wang et al prepared core-shell Cu@Pd nanoparticles with chitosan (CS) to construct the sensor for glucose detection.…”

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confidence: 99%

Copper Nanoparticles Decorated Halloysite Nanotube/Polyaniline Composites for High Performance Non-Enzymatic Glucose Sensor

Luo

Liu

Huang³

et al. 2021

J. Electrochem. Soc.

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Developing high-performance sensors for glucose detection is of great significance in clinical diagnostics and life science. This paper presents a non-enzymatic electrochemical glucose sensor with high performance. The halloysite nanotube/polyaniline (HNT/PANI) nanocomposite was obtained by chemical oxidation polymerization of aniline on the surface of halloysite nanotubes, then a highly sensitive non-enzymatic glucose sensor based on Cu nanoparticles decorated halloysite nanotube/polyaniline (Cu-HNT/PANI) nanocomposite was fabricated by in situ reduction of Cu precursor on HNT/PANI nanotubes under mild condition. Benefits from the high specific surface area and abundant active sites of the conductive substrate, the Cu-HNT/PANI nanocomposites modified glass carbon electrodes (GCE) exhibited significantly enhanced glucose sensing performance. The glucose sensor based on Cu-HNT/PANI composite demonstrated an excellent linear relationship in glucose concentrations range of 0.01–5 mM. The sensitivity in low concentration range (0.01–0.1 mM) reached 434.0 μA mM−1 cm−2 with the detection limit of 0.27 μM (S/N = 3). Besides, the Cu-HNT/PANI composites modified GCE exhibited extraordinary selectivity, stability and reproducibility in glucose sensing. Taking advantage of the low cost and mild synthesis conditions, Cu-HNT/PANI is a promising glucose-sensing material with broad application prospect.

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Fabrication of Ag2WO4/PANI composite with enhanced supercapacitor performance

Dhineshkumar,

Rajkumar,

Sathiyan

et al. 2024

J Mater Sci: Mater Electron

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Synthesis of some transition MWO4 (M: Mn, Fe, Co, Ni, Cu, Zn, Cd) nanostructures by hydrothermal method

Cited by 8 publications

References 209 publications

Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Copper Nanoparticles Decorated Halloysite Nanotube/Polyaniline Composites for High Performance Non-Enzymatic Glucose Sensor

Fabrication of Ag2WO4/PANI composite with enhanced supercapacitor performance

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Synthesis of some transition MWO4 (M: Mn, Fe, Co, Ni, Cu, Zn, Cd) nanostructures by hydrothermal method

Cited by 8 publications

References 209 publications

MnxWO4 Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

MnxWO4 Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Copper Nanoparticles Decorated Halloysite Nanotube/Polyaniline Composites for High Performance Non-Enzymatic Glucose Sensor

Fabrication of Ag2WO4/PANI composite with enhanced supercapacitor performance

Contact Info

Product

Resources

About

Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates

Mn_xWO₄ Nanostructure-Based Catalysts for Single-Step Oxidation of Cyclohexane and Methane to Oxygenates