title: A colorimetric method of analysis for trace amounts of hydrogen peroxide with the use of the nano-properties of molybdenum disulfide.
abstract: Molybdenum disulfide (MoS2) is an emerging material with some unique physical and electronic properties somewhat comparable to those of graphene. It was prepared with the use of a simple hydrothermal process, and has a layered structure similar to that of graphene. Also, it has a peroxidase-like catalytic activity and is able to catalyze the oxidation of the colorless peroxidase substrate, 3,3',5,5'-tetramethylbenzidine (TMB), in the presence of H2O2 to produce a blue product. This reaction used MoS2 as a useful peroxidase, which involved a colorimetric method for trace analysis of H2O2 in water, e.g. lake waters. This method is uncomplicated, inexpensive and highly sensitive for H2O2 in the 0.125-1.75 μM range (LOD: 0.08 μM). It is also quite stable in the presence of many common inorganic and organic potentially interfering compounds, e.g. metal ions as well as amino acids and sugars.
authors.affiliation: College of Chemistry, Nanchang University, Nanchang 330031, China. ynni@ncu.edu.cn.
authors.forename: Xinrong
authors.initials: X
authors.lastname: Guo
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Fangying
authors.initials: F
authors.lastname: Wu
authors.forename: Yongnian
authors.initials: Y
authors.lastname: Ni
authors.forename: Serge
authors.initials: S
authors.lastname: Kokot