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论文类型：期刊论文

发表时间：2014-04-01

发表刊物：MATERIALS LETTERS

收录刊物：SCIE、EI、Scopus

卷号：120

页面范围：69-72

ISSN号：0167-577X

关键字：Mg(OH)(2) nanoneedles; Nanoparticles; Direct transformation; Crystal growth; Brucite; Hydrogen bonds

摘要：High purity Mg(OH)(2) nanoneedles with diameters of 3-5 nm and lengths of 40-60 nm were synthesized directly from natural brucite via a facile and dissolution-free route in the presence of magnesium sulfosalicylate and polyethylene glycol (PEG, MW1000). Under hydrothermal conditions, magnesium sulfosalicylate caused layered brucite to disintegrate into thin nanosheets and could transport hydroxyl groups from the nanosheets to Mg(OH)(2) crystal nuclei as a "supplier". The PEG1000 might regulate the one-dimensional morphology and improve the purity of the Mg(OH)(2) nanoneedles by forming selective hydrogen bonds on the related Mg(OH)(2) crystal surfaces. Since this novel approach is simple and low-cost in comparison with wet precipitation method, the process can easily be scaled up. (C) 2014 Elsevier B.V. All rights reserved.