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This study presents hydrogen peoxide determination using a new electrochemical sensor based on Fe3O4 functionalized graphene oxide (Fe3O4-APTES-GO). Fe3O4-APTES-GO was synthesized by a two-step process. First, Fe3O4 was modified by (3-aminopropyl) triethoxysilane to introduce amino groups on the surface of graphene oxide(GO). Second, APTES-Fe3O4 was reacted with the carboxylic groups of GO by an activating...
Nanoparticles has attracted great attention to many applications due to their extraordinary physical and chemical, mechanical, magnetic, optical, electrical and piezoelectric properties compared to bulk materials, which offer great promise in the development of nanotechnology to revolutionise the world through promising applications, including industry, agriculture, medicine, public health, and environment...
Identifying the technology trends, key patents to be aware of, the key players active in the field, the product areas that are heavily patented or scarcely addressed, and the focus of a company's competitors represent crucial aspects of developing a successful strategic plan, determining a company's freedom to make and sell their product, and focusing future research & product development efforts...
An ultrasensitive micro sensor for the detection of trace lead (II) is fabricated by mixed dispersion solution of bismuth nanoparticles (Bi NPs) and PDDA, and layer-by-layer self-assembled (LBL SA) with graphene (G) suspension solution on a micro gold electrode. The LBL SA G-Bi NPs sensor performance has been greatly enhanced in determination of Pb (II) using anodic stripping voltammetry (ASV). Compared...
We fabricated the composite of reduced graphene oxide (rGO) nanosheets and platinum nanoparticels (Pt NPs) using a pyrolysis spray coating method to investigate their electrocatalytic hydrogen evolution reaction (HER) performance. The atomic force microscopy was used to characterize surface morphology of rGO:Pt nanohybrids. Pt is mostly decorated on rGO nanosheets in form of NPs with diameter sizes...
Arsenic (As), is a worldwide societal & environmental threat and therefore requires continuous monitoring in the natural water resources. Although, many opto/electrochemical techniques based on, macro, micro and nanostructures have been developed for the detection of As3+ ions, with advantages of high selectivity, sensitivity, and fast response. Yet, most of them are commercially unavailable,...
Graphene found to be one of the best alternative to carbon nanotubes due to its superior properties and distinctive nanostructure. Graphene supported palladium electrocatalysts (Pd/G) is prepared using a facile microwave reduction method; which assists reduction of graphene oxide and further leads to formation of palladium nanoparticles. The structural characteristics of the prepared materials are...
A facile one-step strategy to synthesize hybrid Ag NWs-graphene nanostructure for enhanced electrochemical detection of hydrogen peroxide was reported. The simple nature of our process leads to formation of Ag continuous and seamless integrated NWs-graphene hybrids with excellent interfacial electron transfer, avoiding the interface problems associated with the multiple-step process Interestingly,...
Graphene nanosheets (GNs) have been investigated as a counter electrode for dye-sensitized solar cells (DSCs). Mesoporous TiO2 films are prepared from the commercial TiO2 nano-powders by screen-printing technique on fluorine-doped tin oxide (FTO) slides. GNs are applied to substitute for platinum as counter-electrode materials. GN films are screen printed on FTO glass using a paste based on GNs dispersed...
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