A facile synthesis of high quality nanostructured CeO2 and Gd2O3-doped CeO2 solid electrolytes for improved electrochemical performance

Kuo, Yu‐Lin; Su, Yu-Ming; Chou, Hung‐Lung

doi:10.1039/c5cp00735f

Cited by 22 publications

(5 citation statements)

References 44 publications

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“…The cavitation phenomena derived from ultrasound can induce chemical changes, which lead to many unique properties in the irradiated solution and particles suspended in the same . However, CeO 2 has been widely applied in catalysis, oxygen sensors, solid fuel cells, UV adsorbents, and so on. Among numerous CeO 2 , mesoporous CeO 2 has attracted much attention due to their porous structure and high surface area which can provide more active sites .…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Zhao

Gao

Zhu

et al. 2018

Bulletin Korean Chem Soc

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Hierarchical layer‐by‐layer quadrangle CeO2 was prepared through ultrasonic‐assisted solution‐phase synthesis strategy using cerium oxalate as the precursor. The as‐prepared mesoporous CeO2 displayed a surface area of 98.7 m2 g−1 and pore diameters of 2.0–10.0 nm. The high‐resolution TEM image revealed that the layer structures of the CeO2 were made of numerous nanocrystal particles with the crystallite size of about 13–15 nm. High energy and cavitation of ultrasonic wave assists cerium oxalate precursor in building the layer‐by‐layer quadrangle staking. UV–vis absorption spectrum showed that the direct allowed transition bandgap energy for the as‐prepared CeO2 was 2.91 eV. Moreover, the CeO2 exhibited good photocatalytic property for degrading Rhodamine B solution under UV radiation.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Zhao

Gao

Zhu

et al. 2018

Bulletin Korean Chem Soc

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“…To assess the precise structural insights into the synthesized materials, the prepared TOH Au NCs samples were analyzed employing Rietveld refinement . Figure shows experimental, simulated and difference patterns for the Rietveld refinement from the diffraction data of TOH Au NCs.…”

Section: Resultsmentioning

confidence: 99%

Electrocatalysis enhancement of a screen‐printed carbon electrode by modification with trisoctahedral gold nanocrystals for H₂O₂ and NADH sensing application

Liu

Chen

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND: Noblemetal nanocrystals with high index facets have received much attention because of their enhanced catalytic performance. This paper describes the trisoctahedral gold nanocrystals (TOH Au NCs) with {441} high-index facets for the modification of a screen printed carbon electrode. RESULTS: TOH Au NCs enclosed high index facets provided high sensitivity as well as detecting H 2 O 2 and NADH with a lower detection limit of 0.05 mmol L −1 at a signal-to-noise ratio of 3. The values of sensitivity for the disposable electrochemical sensors to H 2 O 2 and NADH were calculated to be 11.1 and 0.74 A mmol L −1 cm 2 at the working potentials of −0.2 and 0.2 V, respectively. In particular, the extremely small loading amount of TOH Au NCs (5.12 × 10 −5 g cm −2 ) shows unusually high sensing performance for the electrochemical reactions of H 2 O 2 and NADH. CONCLUSIONS: Our discovery of the reaction mechanism in TOH Au NCs provides a new understanding of the interaction in Au-modified disposable electrochemical sensors, and gives a new way to control the interaction between gold and the support as well as electrocatalytic activities. Thus, TOH Au NCs as electrocatalyst can offer quite promising signal transduction in the disposable electrochemical sensors for biological and environmental application.

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“…The calculated lattice constants of the synthesized CeO 2 NCs are found to be 5.411 Å, which is consistent with that of bulk CeO 2 (5.416 Å). 39 The crystallite size of CeO 2 NCs is estimated using Williamson-Hall (W-H) plot (Fig. 1(c)) using the obtained XRD pattern where the correction for peak broadening (B) is given by eqn (1), 40…”

Section: Resultsmentioning

confidence: 99%

Structure and electrochemical detection of xenobiotic micro-pollutant hydroquinone using CeO₂ nanocrystals

et al. 2015

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In this study, cerium oxide nanocrystals (CeO2 NCs) were synthesized by the simple and cost effective precipitation method. The structural properties of the obtained CeO2 NCs were characterized by means of X-ray diffraction (XRD) with Rietveld refinement analysis, Transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray spectroscopy (EDX) confirms the presence of CeO2 NCs. The structural properties confirmed the presence of cubic fluorite-type cubic structure which is in agreement with the respective Inorganic Crystal Structure Database (ICSD) N o . 156250. The hydroquinone (HQ) sensing of CeO2 NCs/carbon paper (CP) modified electrode in 0.1 M phosphate buffer solution (pH=7) was characterized using a cyclic voltammetric (CV) electrochemical technique. The CV curve exhibited redox peaks with a detection limit of 0.111 mM and the linear ranges (0.03-0.8 mM) with a sensitivity of 2.443 mA mM -1 cm -2 for HQ detection. Our results indicate that CeO2 NCs modified on CP holds as a promising candidate for the electrochemical detection of toxic HQ.

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A facile synthesis of high quality nanostructured CeO₂ and Gd₂O₃-doped CeO₂ solid electrolytes for improved electrochemical performance

Cited by 22 publications

References 44 publications

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Electrocatalysis enhancement of a screen‐printed carbon electrode by modification with trisoctahedral gold nanocrystals for H₂O₂ and NADH sensing application

Structure and electrochemical detection of xenobiotic micro-pollutant hydroquinone using CeO₂ nanocrystals

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A facile synthesis of high quality nanostructured CeO2 and Gd2O3-doped CeO2 solid electrolytes for improved electrochemical performance

Cited by 22 publications

References 44 publications

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO2

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO2

Electrocatalysis enhancement of a screen‐printed carbon electrode by modification with trisoctahedral gold nanocrystals for H2O2 and NADH sensing application

Structure and electrochemical detection of xenobiotic micro-pollutant hydroquinone using CeO2 nanocrystals

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A facile synthesis of high quality nanostructured CeO₂ and Gd₂O₃-doped CeO₂ solid electrolytes for improved electrochemical performance

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Ultrasonic‐assisted Solution‐Phase Synthesis and Property Studies of Hierarchical Layer‐by‐Layer Mesoporous CeO₂

Electrocatalysis enhancement of a screen‐printed carbon electrode by modification with trisoctahedral gold nanocrystals for H₂O₂ and NADH sensing application

Structure and electrochemical detection of xenobiotic micro-pollutant hydroquinone using CeO₂ nanocrystals