Surface enhanced Raman spectroscopic readout on heavy metal ions based on surface self assembly

2007 ◽  
Vol 38 (10) ◽  
pp. 1280-1287 ◽  
Author(s):  
Ya-Xian Yuan ◽  
Li Ling ◽  
Xi-Yu Wang ◽  
Mei Wang ◽  
Ren-Ao Gu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Raman Spectroscopic ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

scholarly journals Examples in the detection of heavy metal ions based on surface-enhanced Raman scattering spectroscopy

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Guangda Xu ◽  
Peng Song ◽  
Lixin Xia
Keyword(s):  
Heavy Metal ◽  
Raman Scattering ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Copper Ions ◽  
Surface Enhanced Raman Scattering ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract Heavy metals have been widely applied in industry, agriculture, and other fields because of their outstanding physics and chemistry properties. However, heavy metal pollution is inevitable in the process of mass production and emission. Heavy metal ions will cause irreversible harm to the human body and other organisms due to their nondegradable nature even at low concentrations of exposure and ingestion. Therefore, it is of great significance for human health and ecological environment to develop high accuracy and sensitivity as well as stable techniques for detecting heavy metal ions. In recent years, surface-enhanced Raman scattering (SERS) spectroscopy has been regarded as a promising new technique for the determination of trace heavy metal ions on account of its special fingerprint identification capability, high sensitivity, rapid detection ability, and simple operation. This review summarized in detail the basic principles and strategies for detecting mercury ions, copper ions, arsenic ions, zinc ions, cadmium ions, lead ions, and chromium (VI) ions as well as the current challenges and future trends for the determination of heavy metal ions based on SERS technology.

Facile Synthesis of Graphene-Based Aerogels and Their Applications for Adsorption of Heavy Metal Ions

2019 ◽  
Vol 18 (02) ◽  
pp. 1850019
Author(s):  
Huiyuan Yu ◽  
Jiayi Zhu ◽  
Hongbo Ren ◽  
Shuxin Liu
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Three Dimensional ◽  
Annealing Process ◽  
Interconnected Network ◽  
Facile Synthesis ◽  
Thermal Annealing Process ◽  
Highly Porous

Graphene-based aerogels with a three-dimensional interconnected network were fabricated via the hydrothermal self-assembly and thermal-annealing process. The aerogels were characterized by means of scanning electron microscopy and atomic absorption spectroscopy. The graphene-based aerogels showed highly porous structure and adsorption capacity for heavy metal ions. Thus, they would be the promising materials for removal of heavy metal ions from water.

Rejection of Heavy Metal Ions with Polyelectrolyte Composite Nanofiltration Membrane

2014 ◽  
Vol 529 ◽  
pp. 87-91
Author(s):  
Hong Mei Chen ◽  
Hong Xia Guo ◽  
Yue Ma ◽  
Zhen Ping Qin ◽  
Guo Li Xie
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Self Assembly ◽  
Heavy Metal Ions ◽  
Layer By Layer ◽  
Operating Pressure ◽  
Nanofiltration Membrane ◽  
Surface Charges ◽  
Filtration Membrane ◽  
Ultra Filtration

Nanofiltration membrane was prepared by static layer-by-layer (LBL) self-assembly of poly (ethyleneimine) (PEI) and poly (sodium 4-styrenesulfonate) (PSS) on the modified poly-arcylonitrile ultra-filtration membrane. Study on self-assembly of polyelectrolyte membranes with changing surface charges and wettability, rejection properties of nanofiltration membrane in different conditions and pH with respect to heavy metal ions, namely Ni2+and Cd2+were investigated. The results show that the PEI/PSS membrane composed of 4 bilayers at operating pressure 0.4MPa, rejection of PAN-PEI/PSS nanofiltration membrane towards these 2 kind of heavy metal ions reached no less than 90%.

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