Effect of speciation transformation of manganese on aggregation and deposition of graphene oxide
Effect of speciation transformation of manganese on aggregation and deposition of graphene oxide
复制标题
锰的形态转变对氧化石墨烯聚集和沉积的影响
DOI：
10.1039/c7nj03877a
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发表时间：
2018-02
影响因子：
3.3
通讯作者：
Shi Baoyou
中科院分区：
文献类型：
--
作者：
Shu Min;Gao Xiang;Li Guiwei;Zhu Weihuang;Hao Haotian;Shi Baoyou
由于天然水生环境中锰（MN）的广泛存在以及氧化石墨烯（GO）产品的应用增加，因此MN和GO在天然水域的共存是不可避免的。但是，他们互动的影响
Due to the extensive existence of manganese (Mn) in natural aquatic environments and the increasing applications of graphene oxide (GO) products, the co-existence of Mn and GO in natural waters would be inevitable. However, the effect of their interactions on the transportation and fate of GO is not clear. In this work, the impact of different species of manganese on the aggregation of GO was investigated systematically through batch experiments under different chemical conditions (e.g., Mn concentration and pH). The results indicated that the concentration of Mn(II) played a significant role in the aggregation and deposition of GO. The critical coagulation concentration (CCC) of Mn(II) for the aggregation of GO suspension (within the range of 5–100 mg L−1) was about 3.0 mM at neutral pH conditions. At high pH values (8–10), only 0.3 mM Mn could destabilize the GO suspension due to the in situ freshly formed oxidized manganese species through mechanisms of electrostatic-adsorption, neutralization, and catching–sweeping interactions. However, addition of pre-prepared MnO2 had little effect on aggregating the GO suspension over a wide range of pH value. Overall, these findings are useful for understanding and predicting the fate and transport of GO in both aquatic environments and wastewater treatment areas in the presence of manganese.
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氧化石墨烯与矿物质在水相中的异相聚集
影响因子：
11.4
作者：
Zhao Jian;Liu Feifei;Wang Zhenyu;Cao Xuesong;Xing Baoshan
通讯作者：
Xing Baoshan
影响因子：
3.9
作者：
Gudarzi, Mohsen Moazzami
通讯作者：
Gudarzi, Mohsen Moazzami
影响因子：
3.3
作者：
Chen, Dezhi;Wei, Wei;Guo, Lin
通讯作者：
Guo, Lin
DOI：
10.1201/b11259
发表时间：
2016-04
期刊：
--
影响因子：
--
作者：
W. Choi;Jo-Won Lee
通讯作者：
W. Choi;Jo-Won Lee
影响因子：
11.4
作者：
Chowdhury, Indranil;Duch, Matthew C.;Bouchard, Dermont
通讯作者：
Bouchard, Dermont