Controlled release of molasses melanoidin-like product from hybrid organic?inorganic silica xerogels and its application to the phytoextraction of lead through the Indian mustard
Controlled release of molasses melanoidin-like product from hybrid organic?inorganic silica xerogels and its application to the phytoextraction of lead through the Indian mustard
复制标题
有机-无机杂化二氧化硅干凝胶中糖蜜类黑素的受控释放及其在印度芥菜植物提取铅中的应用
DOI：
10.1007/s11356-021-13363-1
复制
发表时间：
2021
影响因子：
5.8
通讯作者：
Yamatsu Takeshi
中科院分区：
文献类型：
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作者：
Hatano Ken-ichi;Teraki Minori;Nakajima Daiki;Yamatsu Takeshi
在这项研究中，我们研究了释放类黑精产品（MLP）从混合二氧化硅干凝胶，以控制在铅植物提取介质中的MLP的量。以正硅酸乙酯（TEOS）、甲基三乙氧基硅烷（MTES）、丙基三乙氧基硅烷（PTES）和3-氨丙基三乙氧基硅烷（APTES）为前驱体制备了MLP杂化有机-无机干凝胶。实验结果表明，MLP的释放可以很容易地控制部分取代TEOS与有机硅烷。有机硅烷的加入降低了MLP的释放速率，其顺序为：TEOS、MTES/TEOS、PTES/TEOS和APTES/TEOS。此外，一种新的植物提取铅通过印度芥菜进行使用MLP掺杂的TEOS干凝胶。结果表明，除了TEOS干凝胶没有任何影响的芥末的生长，而铅的吸收显着增加在营养培养基中与1 mM的Pb（NO3）2。总之，证实了MLP掺杂的TEOS干凝胶对铅植物提取的有益效果。
In this study, we investigate the release of melanoidin-like product (MLP) from hybrid silica xerogels to control the quantity of MLP in the medium for lead phytoextraction. In the preparation of the hybrid organic–inorganic xerogels with MLP, tetraethoxysilane (TEOS), methyltriethoxysilane (MTES), propyltriethoxysilane (PTES), and 3-aminopropyltriethoxysilane (APTES) were used as precursors. The experimental results suggest that the release of MLP can be easily controlled by partially substituting TEOS with the organosilanes. The addition of the organosilanes lowered the release rate of MLP in the following order of xerogels: TEOS, MTES/TEOS, PTES/TEOS, and APTES/TEOS. Furthermore, a novel phytoextraction of lead through the Indian mustard was conducted using the MLP-doped TEOS xerogel. Results show that the addition of TEOS xerogel did not have any influence on the growth of the mustard, whereas the lead uptake significantly increased in a nutrition medium with 1-mM Pb(NO3)2. In conclusion, the beneficial effect of the MLP-doped TEOS xerogel on lead phytoextraction was confirmed.