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 language | English (US) |
|---|---|
| Pages (from-to) | 4262-4267 |
| Number of pages | 6 |
| Journal | Journal of Crystal Growth |
| Volume | 310 |
| Issue number | 18 |
| DOIs | |
| State | Published - Aug 15 2008 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry
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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 journal › Article
TY - JOUR
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
PY - 2008/8/15
Y1 - 2008/8/15
N2 - 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.
AB - 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.
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U2 - 10.1016/j.jcrysgro.2008.06.072
DO - 10.1016/j.jcrysgro.2008.06.072
M3 - Article
AN - SCOPUS:49949092683
VL - 310
SP - 4262
EP - 4267
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
SN - 0022-0248
IS - 18
ER -