Jian Rong Chen

Comparing Different Kinds of Materials for Adsorption of Methylene Blue

Methylene blue is an organic dyestuff and damaged to human beings. Graphene-based composite is a new type of nanometer materials and with outstanding adsorption capacity of methylene blue than other materials in aqueous solution. This paper summarized and compared the difference among graphene, graphene-based composites and other materials in removing methylene blue in aqueous solution.

Progress of Graphene-Based Composites for Adsorption of Pollutants in Wastewater

Graphene-based composites show much better adsorption capacity and other properties than single graphene under the same operating conditions. This paper summarized the different kinds of graphene-based composites removing various heavy metals and organic pollutants in wastewater.

Advances in Graphene for Adsorption of Heavy Metals in Wastewater

Graphene for its unique physical structure, excellent mechanical, electrical and physical properties has been widely applied in nanoelectronics, microelectronics, energy storage material, composite materials and so on. In recent years, many researchers found graphene have outstanding adsorption capacity of contaminants in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various heavy metals in waste water.

Advances in Studies on the Adsorption of Dyes in Wastewater Using Mesoporous Materials

Due to their large surface areas, high pore volumes, relatively even distributions of pore sizes, surfaces enriched with unsaturated groups and orderly long-range structures, the mesoporous materials have been widely applied in industries such as chemical, biomedical, environmental protection and functional materials. In recent years, many scientists have demonstrated that the mesoporous molecular sieves have better adsorption of dyes in wastewater. This paper reviews the applications of different types of mesoporous adsorbents for removal of dyes in wastewater. It also presents the challenges and prospects in using the mesoporous materials for dye removal in wastewater treatment.

Nanometer Materials Modified Electrodes for Detection of Heavy Metal Ions by Stripping Voltammetry

More and more heavy metal ions pollution events happen nowadays, so how to detect and remove heavy metal ions is a very important problem. Electrochemical method is relatively simple device, convenient automatic operation. Because of its high sensitivity and good selectivity, it becomes a good method to detect heavy metal ions. This paper summarized the detection of heavy metal ions by stripping voltammetry.

An Overview with Applications to Graphene-Based Composites

In recent years, graphene has been increasingly studied due to its good performance, low prices and accessible materials in recent years. In addition, the scaled-up and reliable production of graphene derivatives provides a large range of opportunity to synthesize graphene-based functional materials for various applications. This paper summarizes the graphene-based composites in various fields of applications.

Carbon Dots for Detection of Metal Ions

Carbon dots are novel fluorescent nanomaterials which have easy to preparation. They have good stability, low toxicity, environment-friendly and are widely used in biological imaging, biomedical, and biochemical analysis, metal reduction, fluorescence probe and optoelectronic devices. This paper summarized several new methods for the detection of metal ions with carbon dots.

Advances in Graphene-Based Fluorescent Sensors for Heavy Metals

The excellent photophysical feature makes graphene widely applied in fluorescent sensors. Here, we summarize recent progress in the design of graphene-based sensors, especially the increase in the sensitivity of the detection of heavy metals. In addition, we also give an overview of the development of graphene-based sensors in the future.

Advances of Graphene for Adsorption of Dyes in Wastewater

Graphene is a fascinating new member of carbon materials with honeycomb and one-atom-thick structure, consisting of 2D hexagonal lattices of sp2 carbon atoms covalently bonded. Graphene has a huge theory specific surface area (over 2600 m2 g1), good thermal conductivity, high values of Youngs modulus and fracture strength, high thermal stability and chemical stability and fast mobility of charge carriers, etc.. In recent years, many researchers found graphene have outstanding adsorption capacity of dyes in aqueous solution due to its high specific surface area. This paper summarized the graphene, graphene oxide and functionalized graphene removing various dyes in wastewater.

Progress of Mesoporous Materials for the Adsorption of Cr(VI) in Wastewater

Cr(VI) has a highly toxic effect on the organism and has caused serious harm to the environment. Due to quantum size effects and interface coupling effects, mesoporous materials have novel physical, chemical and many other excellent performances, especially for the promising application in the adsorption of heavy metals. This article includes a survey of removal mesoporous materials for Cr(VI)-contaminated wastewater. It also presents the challenges and prospects in using the mesoporous adsorbents for Cr(VI) removal in wastewater treatment.