In Situ Probing of the Particle-Mediated Mechanism of WO3 -Networked Structures Grown inside Confined Mesoporous Channels.
In Situ Probing of the Particle-Mediated Mechanism of WO3 -Networked Structures Grown inside Confined Mesoporous Channels.
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原位探测受限介孔通道内生长的 WO3 网络结构的粒子介导机制
DOI：
10.1002/smll.201702565
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发表时间：
2018
期刊：
影响因子：
13.3
通讯作者：
Fang Jixiang
中科院分区：
文献类型：
--
作者：
Zhang Lingling;Li Jiang;You Hongjun;Ma Chuansheng;Lan Si;Wu Zhenduo;Zeng Jianrong;Tian Feng;Fang Jixiang
纳米浇铸法，利用有序介孔二氧化硅或碳作为硬模板，在制备具有新结构和成分的新型介孔材料方面具有巨大潜力。尽管近年来已经合成了多种介孔材料。
Nanocasting, using ordered mesoporous silica or carbon as a hard template, has enormous potential for preparing novel mesoporous materials with new structures and compositions. Although a variety of mesoporous materials have been synthesized in recent years, the growth mechanism of nanostructures in a confined space, such as mesoporous channels, is not well understood, which hampers the controlled synthesis and further application of mesoporous materials. Here, the nucleation and growth of WO3 -networked mesostructures within an ordered mesoporous matrix, using an in situ transmission electron microscopy heating technique and in situ synchrotron small-angle X-ray scattering spectroscopy, are probed. It is found that the formation of WO3 mesostructures involves a particle-mediated transformation and coalescence mechanism. The liquid-like particle-mediated aggregation and mesoscale transformation process can occur in ≈10 nm confined mesoporous channels, which is completely unexpected. The detailed mechanistic study will be of great help for experimental design and to exploit a variety of mesoporous materials for diverse applications, such as catalysis, absorption, separation, energy storage, biomedicine, and nanooptics.
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影响因子：
16.6
作者：
Xia, Younan;Xiong, Yujie;Lim, Byungkwon;Skrabalak, Sara E.
通讯作者：
Skrabalak, Sara E.
具有定制表面形貌的金介观结构及其用于表面增强拉曼光谱的自组装阵列
影响因子：
10.8
作者：
Fang, Jixiang;Du, Shuya;Hahn, Horst
通讯作者：
Hahn, Horst
影响因子：
56.9
作者：
Zheng, Haimei;Smith, Rachel K.;Alivisatos, A. Paul
通讯作者：
Alivisatos, A. Paul
影响因子：
15
作者：
Simonsen, Soren B.;Chorkendorff, Ib;Helveg, Stig
通讯作者：
Helveg, Stig
影响因子：
56.9
作者：
Penn, RL;Banfield, JF
通讯作者：
Banfield, JF