Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Liu, Jinghua; Li, Fengfan; Li, Xin; He, Xiwen

doi:10.1016/j.physleta.2020.126539

Cited by 18 publications

(5 citation statements)

References 34 publications

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“…2 F and Fig. S2 ) [ 35 , 36 ]. Moreover, the results of nitrogen adsorption isotherms showed that H–MnO 2 had a large Brunauer–Emmett–Teller surface area, which would facilitate the reaction of H–MnO 2 with the medium and protein adsorption ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Song,

Wang,

et al. 2024

Bioactive Materials

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Section: Resultsmentioning

confidence: 99%

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Song,

Wang,

et al. 2024

Bioactive Materials

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“…The typical peaks from the deconvolution of the Co 2p spectra in Figure a serve as mutual confirmation of this. The octahedral Co 3+ in Co 3 O 4 is represented by peaks at around 780.2 and 795.1 eV, while the tetrahedral Co 2+ oxidation state is represented by peaks at about 781.7 and 797.0 eV. − The binding energy of Co in WO 3 /Zn-Co 3 O 4 has a slight deviation of 0.3 eV from 779.9 to 780.2 eV and the peak area increases significantly compared to Zn-Co3O4. These results indicate that heterogeneous structures effectively promote charge transfer .…”

Section: Resultsmentioning

confidence: 99%

Limitation of WO₃ in Zn-Co₃O₄ Nanopolyhedra by the Pyrolysis of H₃PW₁₂O₄₀@BMZIF: Synergistic Effect of Heterostructure and Oxygen Vacancies for Enhanced Nitrogen Fixation

Yang

et al. 2023

Inorg. Chem.

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The photocatalytic nitrogen fixation process is a crucial step toward carbon neutrality and sustainable development. The combination of polyoxometalates and metal–organic frameworks is a viable method to achieve high-efficiency photocatalytic nitrogen fixation. In this work, we employed bimetallic ZIF (BMZIF) composed of Co2+ and Zn2+ encapsulated with H3PW12O40 (PW12) as the precursor to synthesize Zn-doped Co3O4 nanopolyhedra loaded with WO3 nanoparticles. The NH3 yield of WO3/Zn-Co3O4-2 with the best photocatalytic performance can reach 231.9 μmol g–1 h–1 under visible light, about 2.4 and 6.4 times those of pure Zn-Co3O4 and WO3, respectively. The rhombic dodecahedral geometry of BMZIF is still maintained in the synthesized WO3/Zn-Co3O4 nanopolyhedra, with the significant increase in the specific surface area after calcination showing better catalytic performance. At the same time, Zn doping and the formation of WO3 nanoparticles result in abundant oxygen vacancies in WO3/Zn-Co3O4 heterostructures. Oxygen vacancies can supply nitrogen with active sites for adsorption and activation and improve photocarriers’ capacity for separation, which can greatly increase the effectiveness of the photocatalytic synthesis of ammonia. This work can easily synthesize the heterostructure based on n-type WO3 nanoparticles and p-type Zn-doped Co3O4 nanopolyhedra, and the beneficial combination of POMs and metal–organic framework provides new thinking for the synthesis of efficient nitrogen-fixing photocatalysts.

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“…The use of carbon spheres (CS) in ECs and capacitive flowable suspension electrodes was investigated [19,72,73]. Active materials with a spherical morphology are highly desired in flowable electrodes.…”

Section: Carbon Spheres/mno X Compositementioning

confidence: 99%

Manganese Oxide Carbon-Based Nanocomposite in Energy Storage Applications

Wayu

2021

Solids

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Global increasing demand in the need of energy leads to the development of non-conventional, high power energy sources. Supercapacitors (SCs) are one of the typical non-conventional energy storage devices which are based on the principle of electrochemical energy conversion. SCs are promising energy storage devices for better future energy technology. Increasing progress has been made in the development of applied and fundamental aspects of SCs. Manganese oxide electrode materials have been well studied; however, their capacitive performance is still inadequate for practical applications. Recent research is mainly focused on enhancing manganese oxide capacitive performance through the incorporation of electrically conductive materials and by controlling its morphology to reveal a more active surface area for redox reactions. In this review, progress in the applications of manganese oxide carbon-based materials towards the development of highly effective SCs is briefly discussed. In this regard, manganese oxide carbon-based nanocomposites synthesis methods and techniques used to approximate the capacitance of electrode materials are discussed.

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Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Cited by 18 publications

References 34 publications

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Limitation of WO₃ in Zn-Co₃O₄ Nanopolyhedra by the Pyrolysis of H₃PW₁₂O₄₀@BMZIF: Synergistic Effect of Heterostructure and Oxygen Vacancies for Enhanced Nitrogen Fixation

Manganese Oxide Carbon-Based Nanocomposite in Energy Storage Applications

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Ultrathin MnO2 nanosheets grown on hollow carbon spheres with enhanced capacitive performance

Cited by 18 publications

References 34 publications

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Dual-response of multi-functional microsphere system to ultrasound and microenvironment for enhanced bone defect treatment

Limitation of WO3 in Zn-Co3O4 Nanopolyhedra by the Pyrolysis of H3PW12O40@BMZIF: Synergistic Effect of Heterostructure and Oxygen Vacancies for Enhanced Nitrogen Fixation

Manganese Oxide Carbon-Based Nanocomposite in Energy Storage Applications

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Limitation of WO₃ in Zn-Co₃O₄ Nanopolyhedra by the Pyrolysis of H₃PW₁₂O₄₀@BMZIF: Synergistic Effect of Heterostructure and Oxygen Vacancies for Enhanced Nitrogen Fixation