Morphology preservation and crystallinity improvement in the thermal conversion of the hydrothermal synthesized MgBO2(OH) nanowhiskers to Mg2B2O5 nanowhiskers

Wancheng Zhu, Lan Xiang, Qiang Zhang, Xueyi Zhang, Ling Hu, Shenlin Zhu

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Preservation of one-dimensional (1D) morphology and improvement of crystallinity in the thermal conversion route to magnesium borate (Mg2B2O5) nanowhiskers at a relatively low temperature as 650-700 °C (200-350 °C lower than that of the literature) based on the hydrothermal synthesis of magnesium borate hydroxide (MgBO2(OH)) nanowhiskers were investigated; the results indicated that thermal conversion at appropriate temperature with a slow heating rate was favorable for the morphology preservation and crystallinity improvement. A specific heating procedure was developed according to the recrystallization phenomenon existing in the thermal conversion of the MgBO2(OH) nanowhiskers to produce Mg2B2O5 nanowhiskers with uniform morphology, improved crystallinity and fewer pores, in which Mg2B2O5 nanowhiskers (15.0-45.0 nm in diameter, 0.2-2.0 μm in length) were synthesized by heating MgBO2(OH) nanowhiskers (1.0 °C min-1) to 650 °C for 2.0 h of isothermal condition first to preserve the 1D morphology, and thereafter to 700 °C (1.0 °C min-1) for another 2.0 h of isothermal state to recrystallize. The designed specific heating procedure to reduce the mesopores and deformation could also benefit synthesis of other 1D anhydrous nanostructures via the wet chemistry-based thermal conversion route.

Original languageEnglish (US)
Pages (from-to)4262-4267
Number of pages6
JournalJournal of Crystal Growth
Volume310
Issue number18
DOIs
StatePublished - Aug 15 2008

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Nanowhiskers
crystallinity
heating
borates
magnesium
routes
Heating
Magnesium
synthesis
hydroxides
Hydrothermal synthesis
chemistry
Heating rate
porosity
Hot Temperature
Nanostructures
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

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title = "Morphology preservation and crystallinity improvement in the thermal conversion of the hydrothermal synthesized MgBO2(OH) nanowhiskers to Mg2B2O5 nanowhiskers",
abstract = "Preservation of one-dimensional (1D) morphology and improvement of crystallinity in the thermal conversion route to magnesium borate (Mg2B2O5) nanowhiskers at a relatively low temperature as 650-700 °C (200-350 °C lower than that of the literature) based on the hydrothermal synthesis of magnesium borate hydroxide (MgBO2(OH)) nanowhiskers were investigated; the results indicated that thermal conversion at appropriate temperature with a slow heating rate was favorable for the morphology preservation and crystallinity improvement. A specific heating procedure was developed according to the recrystallization phenomenon existing in the thermal conversion of the MgBO2(OH) nanowhiskers to produce Mg2B2O5 nanowhiskers with uniform morphology, improved crystallinity and fewer pores, in which Mg2B2O5 nanowhiskers (15.0-45.0 nm in diameter, 0.2-2.0 μm in length) were synthesized by heating MgBO2(OH) nanowhiskers (1.0 °C min-1) to 650 °C for 2.0 h of isothermal condition first to preserve the 1D morphology, and thereafter to 700 °C (1.0 °C min-1) for another 2.0 h of isothermal state to recrystallize. The designed specific heating procedure to reduce the mesopores and deformation could also benefit synthesis of other 1D anhydrous nanostructures via the wet chemistry-based thermal conversion route.",
author = "Wancheng Zhu and Lan Xiang and Qiang Zhang and Xueyi Zhang and Ling Hu and Shenlin Zhu",
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Morphology preservation and crystallinity improvement in the thermal conversion of the hydrothermal synthesized MgBO2(OH) nanowhiskers to Mg2B2O5 nanowhiskers. / Zhu, Wancheng; Xiang, Lan; Zhang, Qiang; Zhang, Xueyi; Hu, Ling; Zhu, Shenlin.

In: Journal of Crystal Growth, Vol. 310, No. 18, 15.08.2008, p. 4262-4267.

Research output: Contribution to journalArticle

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T1 - Morphology preservation and crystallinity improvement in the thermal conversion of the hydrothermal synthesized MgBO2(OH) nanowhiskers to Mg2B2O5 nanowhiskers

AU - Zhu, Wancheng

AU - Xiang, Lan

AU - Zhang, Qiang

AU - Zhang, Xueyi

AU - Hu, Ling

AU - Zhu, Shenlin

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