[PDF] Top 20 Depositing Au Nanoparticles onto Graphene Sheets for Simultaneous Electrochemical Detection Ascorbic Acid, Dopamine and Uric Acid

... obtain graphene is to convert graphene oxide, generated by the oxidization and subsequent exfoliation of graphite, to graphene via chemical reduction or thermal treatment [13, ...monolayer ... See full document

... metallic nanoparticles in situ [22]. The formation of GN/PANI/Au nanohybrid was proven by TEM ...2C, Au NPs are uniformly distributed on surface of ...aggregated graphene and, that maybe due ... See full document

... The peak potentials and the peak currents are closely related to the pH of buffer solution. Figure 3A showed the effect of different pH on the response of 100 μM UA. It was found that the anodic peak was perfect in pH ... See full document

... determination, electrochemical technique represents one of the most attractive approaches due to their high sensitivity, low cost, portability, simplicity and ability to apply as a direct measurement in biological ... See full document

... for simultaneous determination of DA, AA and UA by electrochemical method have been ...Pt, Au, Ag, metal alloys, metal nanoparticles, carbon pastes and glassy carbon electrodes have been ... See full document

... of dopamine (DA), ascorbic acid (AA) and uric acid (UA) has received a considerable attention [26] and plays a vital role in the process of metabolism ...for electrochemical ... See full document

... of graphene, the challenge has been to produce graphene sheets in a bulk quantity [17, ...of graphene sheets [32, ...patterned graphene structure [28, 34, ...make graphene ... See full document

... in electrochemical sensor. Graphene is considered to be a highly-studied carbon allotrope, owing to its excellent electrical conductivity, large surface area and chemically stability ...Recently, ... See full document

... Figure 5. (A) DPV responses of Ag NPs-GO modified electrode towards different concentration of AA (1-210 µM) into PB solution (pH 7. 0). (B) linear Plot of [AA]/µM vs. response peak current/µA. (C) selectivity of Ag ... See full document

... The electrochemical behavior of ascorbic acid (AA) and dopamine (DA) at copper nanoparticles modified polycrystalline gold electrode (nano-Cu/Au) has been studied using cyclic ... See full document

... of dopamine can cause autism, schizophrenia and paranoia. Reduced dopamine concentrations in the brain is associated with the development of Parkinson's ...humans, uric acid (UA) is the final ... See full document

... and electrochemical properties, provide potential applications in fabricating various electronic devices and biosensors ...Nowadays, graphene could be prepared by the facile route of the chemical reduction ... See full document

... generated onto pencil graphite electrode (PGE) by electrodeposition and subsequent displacement reaction between the cobalt nanoparticles and Au 3+ ...excellent electrochemical catalytic ... See full document

... Cyclic voltammetry (CV) was performed on Model EA-201 Electroanalyser (Chemilink System). All the experiments were carried out in a conventional three electrode electrochemical cell. The electrode system contained ... See full document

... A graphene-modified electrode for selective detection of uric acid was ...the graphene-modified electrode exhibited excellent electro-catalytic activity towards UA ... See full document

... many electrochemical approaches have been used to implement the above goal ...sulfosalicylic acid [17]. H. Zhao et. al, as monomer to modify electrode for detection of DA in presence of ... See full document

... increased greatly and the peak potential shifted negatively to 380mV with Ep-Ep/2= 70mV. at CTAB/Fe (II) ONTPc/CPE. The obviously increased peak current and decrease in the anodic over potential for the uric ... See full document

... In this paper, we report the fabrication of carbon paste electrode and its surface modification with acetone. Acetone forms hydrogen bond with water. The acetone–water binding is stronger than in the liquid as in this ... See full document

... enough detection limits or required sample pretreatment and time-consuming extraction due to the small weight of INH, as well as expensive apparatus and costly maintenance [9, ... See full document

... CHI660A electrochemical workstation manufactured by Shanghai Chenhua Instruments, ...used. Electrochemical measurements were carried out in an electrochemical cell in N 2 atmosphere over the ... See full document