文章基本信息

标题：Green Treatment of Phosphate from Wastewater Using a Porous Bio-Templated Graphene Oxide/MgMn-Layered Double Hydroxide Composite
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作者：Yi-Ting Lai ; Yu-Sheng Huang ; Chin-Hsuan Chen 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2020
卷号：23
期号：5
页码：1-24
DOI：10.1016/j.isci.2020.101065
语种：English
出版社：Elsevier
摘要：SummaryExcessive phosphorus in water is the primary culprit for eutrophication, which causes approximately $2.2 billion annual economic loss in the United States. This study demonstrates a phosphate-selective sustainable method by adoptingGarcinia subellipticaleaves as a natural bio-template, where MgMn-layered double hydroxide (MgMn-LDH) and graphene oxide (GO) can be grownin situto obtain L-GO/MgMn-LDH. After calcination, the composite shows a hierarchical porous structure and selective recognition of phosphate, which achieves significantly high and recyclable selective phosphate adsorption capacity and desorption rate of 244.08 mg-P g−1and 85.8%, respectively. The detail variation of LDHs during calcination has been observed viain situtransmission electron microscope (TEM). Moreover, the roles in facilitating phosphate adsorption and antimicrobial ability of chemical constituents inGarcinia subellipticaleaves, biflavonoids, and triterpenoids have been investigated. These results indicate the proposed bio-templated adsorbent is practical and eco-friendly for phosphorus sustainability in commercial wastewater treatment.Graphical AbstractDisplay OmittedHighlights•A natural bio-template provides hierarchical porous structure•The variation of nanostructure during thermal process is discussed in detail•The composite shows high sorption, selectivity, stability, and sustainabilityEnvironmental Chemical Engineering; Green Chemistry; Natural Material