Au nanoparticle decorated silicate network for the amperometric sensing of isoniazid

Electrochemical sensor for Isoniazid based on the glassy carbon electrode modified with reduced graphene oxide–Au nanomaterials

“…At present, various methods have been developed for the determination of INZ, such as high-performance liquid chromatography [2][3][4][5], gas chromatography [6], capillary electrophoresis [7], chemiluminescence [8,9], localized surface plasmon resonance [10], ultraviolet-visible spectrophotometry [11,12], fluorimetry [13] and electrochemical methods [14][15][16][17][18][19][20]. Among these methods, electrochemical methods offer advantages including high sensitivity, simplicity and reproducibility [15,[21][22][23][24][25][26][27]. Various types of electrodes have been developed to determine INZ, including overoxidized polypyrrole glassy carbon modified electrode [28], poly(sulfosalicylic acid)/electroreduced carboxylated graphene modified glassy carbon electrode [19], carbon nanotube modified electrode [25], bentonite clay modified electrodes [21], poly(amidosulfonic acid) modified glassy carbon electrode [27], rhodium modified glassy carbon electrode [15], ordered mesoporous carbon modified GCE [26], poly(L-histidine) modified screen-printed carbon electrode [22], gold electrode [29], dropping mercury electrode [30], electrochemically reduced graphene oxide modified GCE [16] and thionine immobilized multiwalled carbon nanotube modified carbon paste electrode [31].…”

Amperometric Sensing Based on Glutathione Protected Au25 Nanoparticles and Their pH Dependent Electrocatalytic Activity

“…Self-assembly of thiol containing sol-gel network provides a convenient method by which compact film of controlled thickness and structure could be prepared. Much efforts have been made in combining the self-assembly of a sol-gel network and the ability of a thiol functional group to anchor gold nanoparticles within the network [21,22].…”

Gold nanoparticle-based sensing platform of hydrazine, sulfite, and nitrite for food safety and environmental monitoring

“…The silica-based materials have been employed for the modification of the electrode surface among the wide range of materials, and they have attracted considerable attention for chemical and biological catalytic and sensing because of the high reactivity of the surface silane, groups, tunable porosity, high thermal stability, and chemical inertness, enabling the immobilization of different molecules through silane coupling chemistry (Bharathi and Lev 2000;Maduraiveeran and Ramaraj 2007a, b). In the 1980s, the sol-gel chemistry has been utilized for the fabrication of the modified metal such as gold (Au), platinum (Pt), and silver (Ag) interfaces (Gong et al 2014, Jena and Raj 2015, Sampath and Lev 1996. Numerous sensor platforms based on metal nanoparticles dispersed silicate matrices have been reported for environmental and biomedical applications (Adams et al 2011;Jena and Raj 2007;Matsuhisa et al 2013).…”