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An acid-free strategy shows high flexibility for tuning the structural properties of Al-SBA-15 mesoporous materials. Full-open-, plug-containing- and inkbottle-type mesostructures have been directly hydrothermally synthesized by simply adjusting the P123/Si molar ratio of the initial reaction mixture from 0.015 to 0.0020. When attaching a plug precursor addition process (denoted as Plug Precursor...
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