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Kinetically-controlled template-free synthesis of hollow silica micro-/nanostructures with unusual morphologies

Journal Article


Abstract


  • We report a kinetically-controlled template-free room-temperature production of hollow silica materials with various novel morphologies, including tubes, crutches, ribbons, bundles and bells. The obtained products, which grew in a well-controlled manner, were monodispersed in shape and size. The role of ammonia, sodium citrate, polyvinylpyrrolidone, chloroauric acid and NaCl in shape control is discussed in detail. The oriented growth of these micro-/nanostructures directed by reverse micelles followed a solution-solution-solid (SSS) mechanism, similar to the classic vapor-liquid-solid mechanism. The evolution processes of silica rods, tubes, crutches, bundles and bells were recorded using transmission electron microscopy to prove the SSS mechanism. © 2014 IOP Publishing Ltd.

Publication Date


  • 2014

Citation


  • Zhang, A. Q., Li, H. J., Qian, D. J., & Chen, M. (2014). Kinetically-controlled template-free synthesis of hollow silica micro-/nanostructures with unusual morphologies. Nanotechnology, 25(13). doi:10.1088/0957-4484/25/13/135608

Scopus Eid


  • 2-s2.0-84896743772

Web Of Science Accession Number


Volume


  • 25

Issue


  • 13

Abstract


  • We report a kinetically-controlled template-free room-temperature production of hollow silica materials with various novel morphologies, including tubes, crutches, ribbons, bundles and bells. The obtained products, which grew in a well-controlled manner, were monodispersed in shape and size. The role of ammonia, sodium citrate, polyvinylpyrrolidone, chloroauric acid and NaCl in shape control is discussed in detail. The oriented growth of these micro-/nanostructures directed by reverse micelles followed a solution-solution-solid (SSS) mechanism, similar to the classic vapor-liquid-solid mechanism. The evolution processes of silica rods, tubes, crutches, bundles and bells were recorded using transmission electron microscopy to prove the SSS mechanism. © 2014 IOP Publishing Ltd.

Publication Date


  • 2014

Citation


  • Zhang, A. Q., Li, H. J., Qian, D. J., & Chen, M. (2014). Kinetically-controlled template-free synthesis of hollow silica micro-/nanostructures with unusual morphologies. Nanotechnology, 25(13). doi:10.1088/0957-4484/25/13/135608

Scopus Eid


  • 2-s2.0-84896743772

Web Of Science Accession Number


Volume


  • 25

Issue


  • 13