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Author:

Zhang, Yujuan (Zhang, Yujuan.) | Zhang, Lei (Zhang, Lei.) | Deng, Jiguang (Deng, Jiguang.) | Dai, Hongxing (Dai, Hongxing.) (Scholars:戴洪兴) | He, Hong (He, Hong.) (Scholars:何洪)

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SCIE PubMed

Abstract:

By adopting the strategy of triblock copolymer (Pluronic P123) or cetyltrimethylammonium bromide (CTAB) assisted hydrothermal treatment, we fabricated cubic fluorite-type Ce0.6Zr0.3Y0.1O2 (CZY) solid solution polycrystallites with various morphologies. These materials were characterized by means of techniques such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, X-ray photoelectron spectroscopy, thermogravimetry, laser Raman, Fourier-transfer infrared spectroscopy, hydrogen temperature-programmed reduction, and surface area measurements. It is found that the nanorod-like, microspherical, microbowknot-like, and micro-octahedral CZY particles were respectively generated hydrothermally with CTAB at 120 degrees C for 72 h and with P123 at 100, 120, and 240 degrees C for 48 h after calcination at 550 degrees C for 3 h. There was a copresence of Ce3+ and Ce4+ in the CZY samples that led to the formation of oxygen vacancies. We observed a good correlation of low-temperature reducibility with the morphology of the CZY samples. The reducibility of these nano- and micromaterials at low temperatures (240-550 degrees C) enhanced in the order micro-octahedral CZY < microspherical CZY < microbowknot-like CZY < nanorod-like CZY. The formation mechanism of CZY with various morphologies was discussed.

Keyword:

Author Community:

  • [ 1 ] [Zhang, Yujuan]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China
  • [ 2 ] [Zhang, Lei]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China
  • [ 3 ] [Deng, Jiguang]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China
  • [ 4 ] [Dai, Hongxing]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China
  • [ 5 ] [He, Hong]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China

Reprint Author's Address:

  • 戴洪兴

    [Dai, Hongxing]Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Lab Catalysis Chem & Nanosc, Beijing 100124, Peoples R China

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Source :

INORGANIC CHEMISTRY

ISSN: 0020-1669

Year: 2009

Issue: 5

Volume: 48

Page: 2181-2192

4 . 6 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 60

SCOPUS Cited Count: 62

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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