Synthesis and characterisation of SrY2−xCexO4 as environmentally friendly reddish-brown pigments

Oka, Ryohei; Shobu, Yusuke; Aoyama, Fumiya; Tsukimori, Takashi; Masui, Toshiyuki

doi:10.1039/c7ra10250j

Cited by 14 publications

(7 citation statements)

References 42 publications

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“…Figure 4B shows the high‐resolution XPS of Ce. The peaks located at 885.5 and 904.3 eV are assigned to Ce 3d 5/2 and Ce 3d 3/2 in Ce 2 S 3 , respectively 39 . The Ce 4d peak in the full survey also belongs to Ce 2 S 3 , proving the existence of Ce 4+ in Ce 2 S 3 .…”

Section: Resultsmentioning

confidence: 81%

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode

Hui

Liu

et al. 2021

Carbon Energy

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Rare‐earth sulfides are of research interest for lithium‐ion batteries (LIBs) due to their abundant lithium intercalation sites and low redox voltage. However, their electrochemical performances are not satisfactory because of poor conductivity and volume change upon electrochemical cycling. Herein, nanoarchitectures of γ‐Ce2S3 encapsulated in a hollow mesoporous carbon nanosphere (Ce2S3@HMCS) are fabricated using the self‐template strategy combined with the in‐sphere sulfuration method and tested as an LIB anode. The void space between the Ce2S3 core and the outer layer of the carbon nanosphere has been properly designed and modulated to achieve excellent electrochemical performance in terms of electronic conductivity, reversibility, and rate capability. The reversible capacity of Ce2S3@HMCS is 2.6 times that of the pure Ce2S3 anode, which can gradually increase and maintain a capacity of 282 mAh·g−1 at a current density of 1 A·g–1, and a high Coulombic efficiency (~100%) can be achieved even after 1000 cycles. This good performance is attributed to the unique yolk–shell nanostructure with a highly crystallized and stable Ce3S2 core and volume expansion buffer space upon lithiation/delithiation. Ex situ X‐ray diffraction and nuclear magnetic resonance results indicate that the lithiation of Ce2S3@HMCS is an intercalation process. This study represents an important advancement in precise structural design with in‐sphere sulfuration and sheds light on a potential direction for high‐performance lithium storage.

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Section: Resultsmentioning

confidence: 81%

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode

Hui

Liu

et al. 2021

Carbon Energy

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“…Moreover, the Global Alliance to Eliminate Lead Paint, co-led by the World Health Organization (WHO) and the United Nations Environment Programme (UNEP), announced an international goal of eliminating lead in paints by 2020. Therefore, a great deal of effort has been put into eliminating the use of toxic heavy metals and also producing new types of colorants, such as new inorganic pigments that are composed entirely of harmless substances. ,− …”

Section: Introductionmentioning

confidence: 99%

Environmentally Benign Synthesis and Color Tuning of Strontium–Tantalum Perovskite Oxynitride and Its Solid Solutions

et al. 2021

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A facile method was successfully developed to prepare strontium-tantalum perovskite oxynitride, SrTaO 2 N, and its solid solutions. Urea was employed as a solid nitriding agent to eliminate the use of toxic NH 3 gas. In addition, utilization of sol-gel derived Ta 2 O 5 gel as a Ta precursor allowed for completion of nitridation within a shorter period and at a lower calcination temperature compared with the conventional ammonolysis process. Optimization of the reaction conditions, such as the urea content, allowed for production of solid solutions of SrTaO 2 N and Sr 1.4 Ta 0.6 O 2.9 . The products exhibited optical absorption and chromatic colors because of the narrower band gaps of oxynitrides compared with those of oxides. The O/N ratios of the solid solutions were easily adjusted by varying the amount of urea in the mixture of precursor. As a result, the colors of the products ranged from yellow to brown. The nitridation process and products developed in this study are interesting environmentally-benign alternatives to conventional inorganic pigments.

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“…The spin-lattice relaxation times (T 1 ) were determined using the inverse recovery technique. The spectra were analyzed according to Dmfit [40] .…”

Section: Structure and Morphological Characterizationmentioning

confidence: 99%

Promoting the electrochemical properties of yolk-shell-structured CeO2 composites for lithium-ion batteries

Shi¹,

Fu²,

Hui³

et al. 2021

Microstructures

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Synthesis and characterisation of SrY_2−xCe_xO₄ as environmentally friendly reddish-brown pigments

Abstract: SrY2−xCexO4 solid solutions were synthesized as environmentally-friendly inorganic pigments and the color gradually changed from yellow to reddish brown on increasing the Ce3+ concentration.

Cited by 14 publications

References 42 publications

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode

Environmentally Benign Synthesis and Color Tuning of Strontium–Tantalum Perovskite Oxynitride and Its Solid Solutions

Promoting the electrochemical properties of yolk-shell-structured CeO2 composites for lithium-ion batteries

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Synthesis and characterisation of SrY2−xCexO4 as environmentally friendly reddish-brown pigments

Abstract: SrY2−xCexO4 solid solutions were synthesized as environmentally-friendly inorganic pigments and the color gradually changed from yellow to reddish brown on increasing the Ce3+ concentration.

Cited by 14 publications

References 42 publications

Yolk–shell nanoarchitecture for stabilizing a Ce2S3 anode

Yolk–shell nanoarchitecture for stabilizing a Ce2S3 anode

Environmentally Benign Synthesis and Color Tuning of Strontium–Tantalum Perovskite Oxynitride and Its Solid Solutions

Promoting the electrochemical properties of yolk-shell-structured CeO2 composites for lithium-ion batteries

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Synthesis and characterisation of SrY_2−xCe_xO₄ as environmentally friendly reddish-brown pigments

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode

Yolk–shell nanoarchitecture for stabilizing a Ce₂S₃ anode