Charge recombination suppression-based photoelectrochemical strategy for detection of dopamine

Solar-induced photoelectrochemical sensing for dopamine based on TiO2 nanoparticles on g-C3N4 decorated graphene nanosheets

“…The detection limit was 0.02 μM (S/N = 3). This is comparable to that of the previous DA PEC biosensor based on graphene quantum dot decorated TiO 2 nanoparticles [10] and CdTe [11], and more excellent than those of the ECL sensors based on Au nanoclusters [32] and Ag 2 Se quantum dots [33], as well as electrochemical biosensing method based on multi-walled carbon nanotube supported cobalt nanoparticles [34]. Obviously, the proposed G-C 3 N 4 /TiO 2 based PEC biosensor shows promise for the applications in the detection of DA with high sensitivity and relatively wide linear range.…”

“…Over the past decades, a number of strategies have been documented for the quantification of DA, such as high-performance liquid chromatography [5], capillary electrophoresis [6], fluorescence [7] and electrochemical method [8,9]. In contrast, as a newly developed sensing technique, photoelectrochemical (PEC) has not been taken enough attention to the determination of DA [10,11]. Essentially, PEC technique is an evolutionary generation of the electrochemical method.…”

A novel photoelectrochemical sensor based on photocathode of PbS quantum dots utilizing catalase mimetics of bio-bar-coded platinum nanoparticles/G-quadruplex/hemin for signal amplification

“…The addition of non-complementary DNA also hardly affected the PEC response from target DNA. Although CdS or CdTe QDs showed PEC response to oxygen, they also showed response to a variety of electron donors (Wang et al, 2009a(Wang et al, , 2009bAn et al, 2010;Schubert et al, 2010;Long et al, 2011;Zhao et al, 2012;Hao et al, 2012). However, it was found that PbS QDs showed no response to 5.0 Â 10 À 5 mol/L ascorbic acid, dopamine, uric acid or cysteine.…”

New application for the BiVO4 photoanode: A photoelectroanalytical sensor for nitrite

“…Photoelectrochemical sensors have been applied to analyses of a broad range of species of semiconductor materials [9][10][11]. Despite their interesting properties researches based on simple configurations of photoelectrochemical devices are scarce [12,13]. Bismuth vanadate (BiVO 4 ) has been considered a promising n-type semiconductor oxide material for application in clean energy generated by photoelectrochemical devices visible-light range [14].…”