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Herein, a comprehensive experiment was developed based on the fabrication and characterization of highmolecular- weight silk peptide functionalized graphene nanosheets (SP-Gr) and its application in electrochemical sensing of dopamine. In this experiment, transmission electron microscope, scanning electron microscope, X-ray photoelectron spectroscopy, X-ray diffraction and UV-Vis spectroscopy were used to characterize SP-Gr nanocomposites. SP-Gr nanocomposites were coated onto a glassy carbon electrode surface to fabricate an electrochemical sensor for determining dopamine. Experimental conditions for dopamine determination were optimized. An effective method was developed for determining dopamine. [ABSTRACT FROM AUTHOR]

A comprehensive experiment of sodium dodecyl benzene sulfonate (SDBS) intercalated nickel-titanium layered double hydroxide (NiTi-LDH-SDBS) synthesis and application in dye adsorption is designed. The NiTi-LDH-SDBS with SDBS guest molecule in the interlayer were successfully synthesized, and characterized by X-ray diffraction and infrared spectroscopy. The dye adsorption performance of the intercalation complex and the dye removal rate were quantitatively analyzed by ultraviolet-visible absorption spectroscopy. The results show that the adsorption of methylene blue (MB) on NiTi-LDH-SDBS is better than that of methyl orange (MO), owing to the stronger guest-guest interaction between MB and SDBS. The adsorption behavior of MB on NiTi-LDH-SDBS accords with Langmuir adsorption isotherm and pseudo-second-order equation, the calculated saturated adsorption amount was 181.2 mg/g, which was basically consistent with the experimental measurement of 176.4 mg/g. [ABSTRACT FROM AUTHOR]

A substituted tetraphenyl-porphyrin zinc complex was prepared by using pyrrole, 4-chlorobenzaldehyde, and acetic acid zinc as starting materials. The composition and structure of the complex were characterized by elemental analysis, infrared spectroscopy, ultraviolet-visible spectroscopy and electronic spray mass spectrometry. The composite film material with tetraphenyl-porphyrin zinc complex is prepared based on polyacrylonitrile (PAN) fiber as carrier by electrostatic spinning technology, and its fluorescence property was investigated. The experiment project covers many knowledge points such as synthesis of macrocyclic compounds, column chromatographic separation technology, electrostatic spinning technology and modern instrumental analysis techniques, and has the characteristics of comprehensiveness and operability. It is used in graduate course teaching for the modern chemical experiment technology to cultivate the graduate student’s comprehensive experimental skill and innovation ability. [ABSTRACT FROM AUTHOR]