Facile synthesis and optical properties of Prussian Blue microcubes and hollow Fe2O3 microboxes

Wu, Qiaoyan; Wu, Guanglei; Wang, Liuding; Hu, Wenlong; Wu, Hongjing

doi:10.1016/j.mssp.2014.10.014

Cited by 82 publications

(28 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth mentioning that the enhanced performances of the two samples presented here are comparable or superior to those of some remarkable previous research on Fe 2 O 3 yolk-shell microspheres. 12,13,16,17,33 The capacity uctuation phenomenon during the cycling test (Fig. 8a and b) could be partly ascribed to the reversible growth of a polymeric gel-like lm on the surface of the progressively pulverized particles resulting from the electrochemical grinding effect, which is in agreement with previous reports of transition metal oxides.…”

Section: Resultssupporting

confidence: 90%

See 1 more Smart Citation

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Zhong

Liu

et al. 2015

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Section: Resultssupporting

confidence: 90%

“…The centered binding energies of Fe2p and O1s are located at almost the same positions (Fe2p 1/2 724.4 eV, Fe2p 3/2 711.0 eV, O1s 529.7 eV), which are in agreement with previous reports of Fe 3+ and O 2À . 32,33 Raman spectroscopy was carried out with a 532 nm laser as the excitation light. The results (Fig.…”

Section: Resultsmentioning

confidence: 99%

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Zhong

Liu

et al. 2015

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…As shown in Figure 2f, the main peak of N 1s at 397.2 eV could prove the existence of C−N {[Fe(CN) 6 ] 4− } in the hybrid samples. 31,32 From the XPS spectra described above, we could easily conclude that the hybrids of PB@MoS 2 microcubes were successfully synthesized, which provides a basis for the following tests of their properties.…”

Section: ■ Results and Discussionmentioning

confidence: 93%

Metal–Organic Framework-Based PB@MoS₂ Core–Shell Microcubes with High Efficiency and Broad Bandwidth for Microwave Absorption Performance

Zhao

et al. 2019

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

In this study, we fabricated a unique core–shell structure of PB@MoS2 microcubes for the first time (PB stands for Prussian blue) and examined the microwave absorption performance in the frequency range of 2–18 GHz. The results showed the hybrid PB@MoS2 core–shell structure has an excellent microwave absorbing property. The minimum reflection loss value was found to be −42.83 dB with a thickness of 2.1 mm at 16.46 GHz and −42.06 dB at a frequency of 11.44 GHz with a thickness of 2.5 mm for the 40 wt % loading of PB@MoS2/wax. The effective absorbing bandwidth (less than −10 dB) could reach 7.31 GHz at 2.4 mm, 7.44 GHz (9.82–17.26 GHz) at a thickness of 2.5 mm, and 7.17 GHz at a thickness of 2.6 mm. The results indicated that the hybrids of PB@MoS2 core–shell microcubes were promising microwave-absorbing materials formed using an inexpensive and facile synthesis process, which can be an excellent candidate for efficient electromagnetic wave-absorbing applications.

show abstract

“…For the pristine Co‐PBA, the two dominant peaks at 709.8 and 708.2 eV in the Fe 2p 3/2 spectrum are attributed to the [Fe(CN) 6 ] 3− and [Fe(CN) 6 ] 4− species, respectively . In addition, a new peak at 711.4 eV appears in the Fe 2p spectra, which is attributed to the Fe(III) in iron oxide .…”

Section: Resultsmentioning

confidence: 96%

Air Plasma Activation of Catalytic Sites in a Metal‐Cyanide Framework for Efficient Oxygen Evolution Reaction

Guo

Wang

Chen

et al. 2018

Advanced Energy Materials

144

105

View full text Add to dashboard Cite

the commercially available. [7] This is why generic modification methods for the metal sites in the frameworks are highly promising and thus desirable for the development of framework-based highperformance electrocatalysts for energy conversion and storage.To maintain the advantage of the frameworks for catalysis, it is essential that modification of the metal sites should be achieved without destroying the framework. However, selective, nondestructive modification of the metal sites is extremely challenging as most chemical modification on the metal sites also affects the metal-ligand bonding, which makes the framework more vulnerable. There have been many attempts to convert MOFs into catalysts by thermal processing, usually leading to framework decomposition and reassembly into nanostructures of metal oxides or metal-carbon composites. [8,9] Although good catalytic performance can be achieved, this approach results in complete collapse of the framework. In these cases, the high ordering and dispersion of the metal sites, which is the key advantage of frameworks for catalysis, is largely lost.In this work, we show that nondestructive activation of the metal sites in a framework can be achieved by using low-temperature (LT) air plasma. LT air plasma contains highly reactive oxygen species, including atomic oxygen and oxygen molecules in excited states. Importantly, these active species are nonthermal as the equivalent temperature of the ions, radicals, and excited atoms/molecules remain close to room temperature. [10] The combination of high chemical reactivity and low thermal effect allows selective modification of the metal sites without damaging the framework structure.The focus here is on the oxygen evolution reaction (OER) during the electrochemical water oxidation, which is the key reaction for many important applications, including sustainable hydrogen production, rechargeable metal-air batteries, and artificial photosynthesis. [11] The framework in our study is an Fe/Co bimetallic cyanide framework composed of cyanide bridged Fe and Co cations, which is a Co-based analogue to the well-known Prussian blue structure. Prussian blue analogues (PBAs) have been investigated as OER catalysts but only with moderate activity. [12] The highly reactive oxygen species generated by the LT-air plasma activates the metal sites in the Co-PBA for OER by oxygen bonding to the metal sites. Meanwhile, the key merit of high porosity and highly dispersed metal sites of the framework structures is retained due to the low thermal effect. The framework-based OER catalyst is featured for the very low overpotential of only 330 mV at high current densityTargeted activation of highly ordered and distributed metal sites in nanoporous frameworks is a generic strategy to develop high-performance catalysts. The key challenge is to achieve such activation without damaging the frameworks. Here it is demonstrated that atmospheric-pressure lowtemperature plasma generated in air improve catalytic properties of an Fe/ Co bimetallic cyanide fr...

show abstract

Facile synthesis and optical properties of Prussian Blue microcubes and hollow Fe2O3 microboxes

Cited by 82 publications

References 26 publications

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Metal–Organic Framework-Based PB@MoS₂ Core–Shell Microcubes with High Efficiency and Broad Bandwidth for Microwave Absorption Performance

Air Plasma Activation of Catalytic Sites in a Metal‐Cyanide Framework for Efficient Oxygen Evolution Reaction

Contact Info

Product

Resources

About

Facile synthesis and optical properties of Prussian Blue microcubes and hollow Fe2O3 microboxes

Cited by 82 publications

References 26 publications

Subunits controlled synthesis of α-Fe2O3 multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Subunits controlled synthesis of α-Fe2O3 multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Metal–Organic Framework-Based PB@MoS2 Core–Shell Microcubes with High Efficiency and Broad Bandwidth for Microwave Absorption Performance

Air Plasma Activation of Catalytic Sites in a Metal‐Cyanide Framework for Efficient Oxygen Evolution Reaction

Contact Info

Product

Resources

About

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Subunits controlled synthesis of α-Fe₂O₃ multi-shelled core–shell microspheres and their effects on lithium/sodium ion battery performances

Metal–Organic Framework-Based PB@MoS₂ Core–Shell Microcubes with High Efficiency and Broad Bandwidth for Microwave Absorption Performance