Size-effects in the chemical modification of carbon black nanoparticles with 4-nitroaniline

Simultaneous Detection of Homocysteine and Cysteine in the Presence of Ascorbic Acid and Glutathione Using a Nanocarbon Modified Electrode

“…Nanocarbon, sometimes referred to as ‘carbon black’, is an essential aggregate of carbon particles, often spherical with an approximate size of ca. 10 nm, which make up a porous material 32, 34. The size of the aggregate will have effect on the bulk material which will influence their chemical and physical properties 32, 34, 35.…”

Differential pulse voltammetric determination of 4-nitroaniline using a glassy carbon electrode: comparative study between cathodic and anodic quantification

“…Boric acid, acetic acid, phosphoric acid and sodium hydroxide (all p.a. purity, BMIMPF6-SWNT/GCE DPV 0.01-7 8.0 9 10 -9 0.997 [9] SWNT/GCE DPV 0.5-10 2.0 9 10 -7 0.997 [9] CSP/CFE Not available [16] DHCBAQS/graphene-nafion/GCE DPV 0.36-4.31 1.4 9 10 -7 0.999 [15] GCE DPV 2-100 2.0 9 10 -7 0.9906 This work GCE DPV Not available [20] DPV differential pulse voltammetry, AgNPs/POSS/rGO/GCE Glassy carbon electrode modified with nanocomposite of hydrophobic polyhedral oligomeric silsesquioxane and graphene oxide, DTD/AgNP/ CPE 6,7,9,10,17,18,19,20,21, All measurements were carried out using DPV with the following parameters: scan rate 10 mV s -1 , modulation amplitude 50 mV, and pulse duration 50 ms. Based on our previous experience, these parameters give the optimal results. The pH measurements were carried out by the pH meter Jenway 4330 (Jenway, Chelmsford, UK) with a combined glass electrode from the same manufacture.…”

“…Its unique chemical structure containing an electron withdrawing nitro group and an electron donating amino group in para position in the aromatic ring has attracted attention due to its non-linear optical properties, such as non-linear susceptibility [5]. Modified electrode based on the oxidation of 4-NA and its polymerization at the surface of the traditional electrode were used to quantify copper (II) ions in tap water [6,7]. Recent reports pointed out the possibility of detection of cell apoptosis based on the 3-caspase activity to cleave C-terminus of Asp-Glu-Val-Asp-pNA (DEVD p-nitroaniline), releasing in situ 4-NA that can be easily detected and quantified using differential pulse voltammetry (DPV) at a glassy carbon working electrode (GCE).…”

“…Another paper uses as working electrode a CPE modified with 6,7,9,10,17,18,19,20,21,22-decahydrodibenzo[h,r] [1,4,7,11,15] trioxadiazacyclonanodecine-16,23-dione (DTD)/ silver nanoparticles (AgNPs) [21]. Wushuang Bai, Qinglin Sheng, Xiaoyan Ma, and Jianbin Zheng developed a new method of production of silver nanoparticles (AgNPs) modified with hydrophobic polyhedral oligomeric silsesquioxane (POSS) and graphene oxide (GO) nanocomposites.…”

Enhancement of the Wettability of Carbon Blacks by Electrocapillary Rise Wetting

“…Carbon black, CB, is usually formed in nanoscale with great specific surface area. [1,2] CB is broadly applied as rubber modifiers, pigments, [3,4] and recently reports showed also available for some electrochemical cases. [5] To study the adsorption and surface properties of CB have been focused as can be seen elsewhere.…”