Facile preparation of poly (diallyldimethylammonium chloride) modified reduced graphene oxide for sensitive detection of nitrite

Electrocatalytic oxidation of nitrite using metal-free nitrogen-doped reduced graphene oxide nanosheets for sensitive detection

“…The NrGO nanosheets exhibited a good electrocatalytic activity toward oxidation of nitrite at a relatively low oxidation potential (0.68 V). The newly fabricated nitrite sensor showed a wide linear concentration range (0.5-5000 μM) and a low detection limit (0.2 μM) even in comparison to the rGO-based electrochemical sensors mentioned above [14][15][16][17][18][19][20][21][22][23][24], as well as satisfactory selectivity, stability, and reproducibility. The developed electrochemical sensor was further applied for the determination of nitrite in pickled garlic and river water.…”

“…Among them, graphene is an ideal two-dimensional layered material and has been extensively used for growth and anchoring of precious metal and transition metal oxide nanoparticles because of its unique physical and chemical properties, including excellent electronic conductivity, large surface area, high mechanical strength, and good electrocatalytic activity. A variety of graphene or reduced graphene oxide (rGO)-based electrochemical sensors, decorated with precious metal nanoparticles (Au [14], Pd [15], and Au-Pd [16]), metal/transition metal oxide nanoparticles (K [17], ZnO [18], Fe 2 O 3 [19], Fe 3 O 4 [20], Co 3 O 4 [21]), metalloproteins (hemoglobin [22] and myoglobin [23]), and polyelectrolytes (poly(diallyldimethylammonium chloride), PDDA [24]) have been fabricated toward oxidation of nitrite. In recent years, it has been shown that the electronic property, chemical activity, and optical characteristics of graphene can be tailored by chemical doping with heteroatoms such as boron and nitrogen [25][26][27][28][29][30][31][32].…”

Sensitive determination of quinoline yellow using poly (diallyldimethylammonium chloride) functionalized reduced graphene oxide modified grassy carbon electrode

“…PDDA-RGO composite was prepared by a simple wet chemical method according to the literatures with some modifications (Xu, Deng, Liu, Ling, Deng, & Wang, 2014;Xue, Zhao, Wu, Li, He, & Yuan, 2011). Briefly, 5 mg GO was dispersed in 10 mL water and then 2 mL PDDA (0.5 wt.%) was added.…”

“…The reduced graphene oxide (RGO) is prone to irreversible spontaneous agglomeration and lowers the performance of modified electrode. In order to overcome this problem, poly (diallyldimethylammoniumchloride) (PDDA) has been studied for functionalizing GO to a solution-processable RGO (Xu, Deng, Liu, Ling, Deng, & Wang, 2014).…”

Microwave-assisted synthesis graphite-supported Pd nanoparticles for detection of nitrite

“…For instance, capillary electrophoresis [6], ionic liquid dispersive liquid-liquid microextraction high-performance liquid chromatography (IL-DLLME-HPLC) [7], ion chromatography [8], chemiluminescence [9], fluorescent probe [10] and electrochemical method [11]. By comparison, electrochemical method is a kind of cheap and gleaming method because of its intrinsic sensitivity, high selectivity, fast analysis, simplicity [12] and environment-friendly [13,14]. Although nitrite is electroactive at carbon electrodes, the electrochemical behavior of nitrite is usually poor and the electrodes may be poisoned by the species formed during the electrochemical process [15,16].…”