Details

Autor(en) / Beteiligte

• Qu, Jin
• Cao, Chang-Yan
• Hong, You-Li
• Chen, Chao-Qiu
• Zhu, Pei-Ping
• Song, Wei-Guo
• Wu, Zi-Yu

Titel

New hierarchical zinc silicate nanostructures and their application in lead ion adsorption

Ist Teil von

• Journal of materials chemistry, 2012-01, Vol.22 (8), p.3562-3567

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A low cost and reliable hydrothermal method was developed for the tunable synthesis of flower-like and urchin-like zinc silicate nanostructures. High resolution TEM, XRD, solid state super(29)Si NMR spectra and X-ray nanotomography revealed new morphologies and crystal structures. Solid state NMR indicated very different silicon bonding patterns between the two materials. For urchin-like zinc silicates, a synchrotron based three dimensional X-ray nanotomography technique provided unprecedented structural details and revealed structural defects during the assembly process. For flower-like zinc silicates, HRTEM images showed that their secondary nanopetals had a clay-like layered structure, resulting in a higher BET surface area of 236 m super(2) g super(-1) as well as higher adsorption capacity for lead ions at 210 mg g super(-1) than reported zinc silicate samples. The adsorption isotherms and mechanism were investigated.