Gas-flow assisted bulk synthesis of V-type SnO2 nanowires

Ling, Chen; Qian, Weizhong; Wei, Fei

doi:10.1016/j.jcrysgro.2005.08.015

Cited by 14 publications

(10 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In a previous study, Fan et al found that the growth of ZnO NWs (c-axial) and NBs (a-axial) was effectively controlled by indium doping [57,58]. In another work, it was observed that NWs may change direction during growth to form zigzag-shaped structures because several groups of surfaces of rutile SnO 2 have similar energies [35,59].…”

Section: Mechanism Of Morphology Controlmentioning

confidence: 99%

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts

Zhang¹,

Gao²,

Wong³

et al. 2009

Nanotechnology

View full text Add to dashboard Cite

Controlled synthesis of one-dimensional materials, such as nanowires and nanobelts, is of vital importance for achieving the desired properties and fabricating functional devices. We report a systematic investigation of the vapor transport growth of one-dimensional SnO(2) nanostructures, aiming to achieve precise morphology control. SnO(2) nanowires are obtained when SnO(2) mixed with graphite is used as the source material; adding TiO(2) into the source reliably leads to the formation of nanobelts. Ti-induced modification of crystal surface energy is proposed to be the origin of the morphology change. In addition, control of the lateral dimensions of both SnO(2) nanowires (from approximately 15 to approximately 115 nm in diameter) and nanobelts (from approximately 30 nm to approximately 2 microm in width) is achieved by adjusting the growth conditions. The physical properties of SnO(2) nanowires and nanobelts are further characterized and compared using room temperature photoluminescence, resonant Raman scattering, and field emission measurements.

show abstract

Section: Mechanism Of Morphology Controlmentioning

confidence: 99%

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts

Zhang¹,

Gao²,

Wong³

et al. 2009

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…It can be concluded that the zigzag structure is formed by alternating the growth directions between ±[101] and ± 101 , in agreement with the previous result. [11][12][13] Furthermore, we also investigate the growth mechanism of the SnO 2 nanobelts. It is believed that zigzag nanobelts are grown via a vapour-solid (VS) process as no droplet was observed at the tips of or in the zigzag products by using SEM or TEM.…”

Section: Resultsmentioning

confidence: 99%

“…[5][6][7][8][9] Recently, SnO 2 nanobelts with interesting V-shaped or zigzag shapes have been reported. [10][11][12][13][14][15][16] Duan and Huang [12][13][14] used SnO or Sn wrapped by stainless-steel or copper grids to fabricate zigzag SnO 2 nanobelts in a vapor process, and argued that the concentration of reactant vapor is critical for zigzag by increasing raw materials. Fang et al 16 synthesized zigzag SnO 2 on a copper foil by chemical vapor transport epitaxy, and discussed the role of the copper substrate in the growth of nanobelts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Structural Characterization of Single Crystalline Zigzag SnO2 Nanobelts

Lü¹,

Wan²,

Shi³

et al. 2010

J. Nanosci. Nanotech.

View full text Add to dashboard Cite

Freestanding single crystalline zigzag SnO2 nanobelts have been synthesized by a simple thermal evaporation on an iron cylindrical sharp substrate. The heating temperature and Ar gas flow rate are two key points to control the morphology of the nanobelts. The morphology and the microstructure of the nanobelts have been characterized with a number of microscopic techniques. Crystallographic analyses revealed that the zigzag morphology is formed with alternating growth directions between two energy-equal (101) and (101) planes. Moreover, structural and compositional characterization show that the nanobelts do not grow directly on the iron substrate but on the small crystalline grains deposited on the iron oxide columns, which are ascribed to the oxidation of the iron substrate.

show abstract

“…4(b)), and it is likely that this feature is similar to that produced by the vaporliquid-solid (VLS) growth mechanism, which has been used to explain the growth of SnO 2 nanowhiskers and nanowires. 21,22,[25][26][27] Thus, it is probable that the growth mechanism occurring in the N 2 atmosphere is dominated by the VLS mechanism. In contrast, such spherical features were not observed in the columnar SnO 2 crystals.…”

Section: Silver Grass-like Sno 2 Nanowhiskersmentioning

confidence: 99%

Microstructural Control of the TiO2-SnO2 Binary System and Synthesis of SnO2 Nanowhiskers by Microwave Irradiation

2008

View full text Add to dashboard Cite

SnO 2 single crystals (columnar crystals and silver grass-like nanowhiskers) were synthesized by selective microwave heating of a TiO 2 -SnO 2 mixture. The shape of the as-grown SnO 2 crystals is strongly dependent on the atmosphere during microwave irradiation. This is due to the difference in growth mechanisms, as revealed by in-situ surface observation under microwave irradiation, in addition to scanning and transmission electron microscopy observations of irradiated specimens. In a N 2 atmosphere, silver grass-like SnO 2 nanowhiskers were obtained. On the other hand, columnar SnO 2 crystals were obtained in air or an O 2 atmosphere. Photoluminescence and absorption spectra of the as-grown SnO 2 crystals were examined. Based on the analysis of a TiO 2 -SnO 2 pellet, it was found that the bottom was selectively heated, and SnO 2 sublimated by microwave irradiation. A density gradient texture of the sample pellet was formed.

show abstract

Gas-flow assisted bulk synthesis of V-type SnO2 nanowires

Cited by 14 publications

References 17 publications

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts

Synthesis and Structural Characterization of Single Crystalline Zigzag SnO<SUB>2</SUB> Nanobelts

Microstructural Control of the TiO<SUB>2</SUB>-SnO<SUB>2</SUB> Binary System and Synthesis of SnO<SUB>2</SUB> Nanowhiskers by Microwave Irradiation

Contact Info

Product

Resources

About

Gas-flow assisted bulk synthesis of V-type SnO2 nanowires

Cited by 14 publications

References 17 publications

Morphology-controlled synthesis and a comparative study of the physical properties of SnO2nanostructures: from ultrathin nanowires to ultrawide nanobelts

Morphology-controlled synthesis and a comparative study of the physical properties of SnO2nanostructures: from ultrathin nanowires to ultrawide nanobelts

Synthesis and Structural Characterization of Single Crystalline Zigzag SnO<SUB>2</SUB> Nanobelts

Microstructural Control of the TiO<SUB>2</SUB>-SnO<SUB>2</SUB> Binary System and Synthesis of SnO<SUB>2</SUB> Nanowhiskers by Microwave Irradiation

Contact Info

Product

Resources

About

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts

Morphology-controlled synthesis and a comparative study of the physical properties of SnO₂nanostructures: from ultrathin nanowires to ultrawide nanobelts