2004
DOI: 10.1021/jp048596q
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Simple Approaches to Quality Large-Scale Tungsten Oxide Nanoneedles

Abstract: In this paper, a systematic study of large-scale production of highly crystalline W18O49 nanoneedles with high aspect ratios using a simple tungsten metal reacting with water at 800−1000 °C has been described. By altering the W source and other experimental conditions, we have generated W18O49 crystals with diverse morphologies, and needles with desired dimensions are achieved. The quality nanoneedles provide ideal samples for further property investigations. Possible growth mechanisms are discussed.

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Cited by 67 publications
(73 citation statements)
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References 25 publications
(54 reference statements)
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“…The method used here is similar to that has been reported by Jin et al [20]. There they used tungsten particles with diameters 0.6-1 mm and synthesized W 18 O 49 nanoneedles with diameters 200-400 nm which have obvious dislocations at 800 1C.…”
Section: Methodsmentioning
confidence: 84%
“…The method used here is similar to that has been reported by Jin et al [20]. There they used tungsten particles with diameters 0.6-1 mm and synthesized W 18 O 49 nanoneedles with diameters 200-400 nm which have obvious dislocations at 800 1C.…”
Section: Methodsmentioning
confidence: 84%
“…29 Nanorod formation in sparse populations was also apparent and likened to the growth of vapor-deposited WO 3 nanorods/nanobelts at temperatures of 950-1000°C with pure tungsten filaments in air. 42 We believe that the limited nanorod formation was due to hot spots in the FTO substrate and that increased temperatures would enhance nanorod formation.…”
Section: Discussionmentioning
confidence: 96%
“…Only few of these phases have been investigated at the nanoscale. Moreover, the synthesis of nanoneedles, nanowires and nanorods have been demonstrated [38,64,65]. …”
Section: Chemical Synthesis and Structural Properties Of Heavily--dopmentioning
confidence: 99%