Integrated architectures of electrodes and flexible porous substrates for point-of-care testing

Evaluation of two core–shell (Ag2S@- and Bi2S3@-) sensors based on a metal–organic framework (NH2-MIL-125-Ti)/polyaniline for the electroanalysis of uric acid in urine samples

“…Polyaniline (PANI) was synthesized using the method described (SI-3, ESI †). [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47] The geometric surface of the bare glassy carbon electrode (GCE) used (0.071 cm 2 ) was calculated using the formula S = pr 2 , where p = 3.14 and the geometric radius r = 0.15 cm. Prior to its modification, the bare GCE was polished with alumina powder (0.3 mm size) and then sonicated in 1 : 1 ethanol-water solution for 5 min.…”

“…[22][23][24][25][26][27][28][29][30][31][32] The design of new sensing materials for the detection of this physiological compound with higher sensitivity and resolution remains an area requiring much more work as the strategies for the development of wearable sensors are the final goal. 33 Metal-organic frameworks (MOFs) as a new class of electrode materials offering new hope in this regard due to the synergistic catalytic behaviour and the electroactivity of the incorporated metals in MOFs. 34 Nowadays, the utilization of MOFs as catalysts has attracted more and more attention owing to their versatile structures, topologies and composition, tunable functionalities, and highly ordered porous structure.…”

Preparation and Characterization of Alkali Activated Carbon Based Theobroma Cocoa Pods: Application for Electrochemical Determination of Xanthine in Fresh Fish Sample

“…[9,15] The ultimate and long term goal of the majority of such research is to develop miniaturized sensor devices for field deployment and point of care testing (POCT). [16] Activated carbons are excellent for the removal of unwanted xenobiotics in liquid media due to their porous structure, large specific surface area and high absorption capacity. [3,17] The relatively high cost and unavailability of commercial activated carbons on a large scale has thus lead the increase of the research for the production of AC from agricultural residues, which constitute a green chemistry.…”

“…The resulting modified electrodes were used for the sensing of compounds such as dyes, [5,6] pesticides, [7,8] phenolic, [9,10] heavy metals [11,12] constituent of pathological samples, [13,14] and food additives [9,15] . The ultimate and long term goal of the majority of such research is to develop miniaturized sensor devices for field deployment and point of care testing (POCT) [16] . Activated carbons are excellent for the removal of unwanted xenobiotics in liquid media due to their porous structure, large specific surface area and high absorption capacity [3,17] .…”