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Controlled Crystal Growth of Two-Dimensional Layered Nanomaterials in Hydrogel via a Modified Electrical Double Migration Method
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2017-10-31 00:00:00 , DOI: 10.1021/acs.cgd.7b01252 Gyeong-Hyeon Gwak 1, 2 , Na Kyung Kwon 3 , Won-Jae Lee 4 , Seung-Min Paek 4 , So Youn Kim 3 , Jae-Min Oh 1
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2017-10-31 00:00:00 , DOI: 10.1021/acs.cgd.7b01252 Gyeong-Hyeon Gwak 1, 2 , Na Kyung Kwon 3 , Won-Jae Lee 4 , Seung-Min Paek 4 , So Youn Kim 3 , Jae-Min Oh 1
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Layered double hydroxide (LDH) nanomaterials of uniform size and homogeneous distribution are successfully developed in agarose hydrogel through the electrical double migration method. To grow LDH crystals in agarose matrix, both cationic (Ni2+, Ga3+) and anionic precursors (OH– and CO32–) of LDH are simultaneously transported from solution to agarose hydrogel through electric potential, resulting in the in situ crystal growth of LDH. X-ray diffraction patterns, X-ray absorption spectra, and high-resolution transmission electron microscopic images confirm that the developed LDH is ∼15 nm in size and had a well-defined crystal structure. Scanning electron microscopy and small-angle X-ray scattering spectroscopy showed homogeneous arrays of LDH nanocrystals along agarose sheets with homogeneous distribution. On the basis of the characterization results, we suggest that crystal nuclei are first developed on the agarose chain, and then LDHs homogeneously grow along sheets of agarose matrix.
中文翻译：
通过改进的电双迁移方法在水凝胶中控制二维层状纳米材料的晶体生长
通过电双迁移法成功地在琼脂糖水凝胶中开发了尺寸均匀且分布均匀的层状双氢氧化物（LDH）纳米材料。要在琼脂糖基质（阳离子（Ni 2 +，Ga 3+）和阴离子前体（OH –和CO 3 2 –LDH）同时通过电位从溶液中转移到琼脂糖水凝胶，导致LDH原位晶体生长。X射线衍射图，X射线吸收光谱和高分辨率透射电子显微镜图像证实，所开发的LDH尺寸约为15 nm，并具有明确的晶体结构。扫描电子显微镜和小角X射线散射光谱显示LDH纳米晶体沿着琼脂糖片均匀排列，分布均匀。根据表征结果，我们建议首先在琼脂糖链上形成晶核，然后LDHs沿着琼脂糖基质片均匀生长。
更新日期：2017-10-31
中文翻译：
通过改进的电双迁移方法在水凝胶中控制二维层状纳米材料的晶体生长
通过电双迁移法成功地在琼脂糖水凝胶中开发了尺寸均匀且分布均匀的层状双氢氧化物（LDH）纳米材料。要在琼脂糖基质（阳离子（Ni 2 +，Ga 3+）和阴离子前体（OH –和CO 3 2 –LDH）同时通过电位从溶液中转移到琼脂糖水凝胶，导致LDH原位晶体生长。X射线衍射图，X射线吸收光谱和高分辨率透射电子显微镜图像证实，所开发的LDH尺寸约为15 nm，并具有明确的晶体结构。扫描电子显微镜和小角X射线散射光谱显示LDH纳米晶体沿着琼脂糖片均匀排列，分布均匀。根据表征结果，我们建议首先在琼脂糖链上形成晶核，然后LDHs沿着琼脂糖基质片均匀生长。
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