Catalyst-free fabrication of one-dimensional N-doped carbon coated TiO2 nanotube arrays by template carbonization of polydopamine for high performance electrochemical sensors

A La3+-doped TiO2 nanoparticle decorated functionalized-MWCNT catalyst: novel electrochemical non-enzymatic sensing of paraoxon-ethyl

“…To overcome these issues, the doping phenomenon is a powerful strategy to improve the catalytic performance of TiO 2 NPs in an electrochemical sensor platform, which can be accomplished by different approaches, such as doping with non-metals, transition metals, or rare-earth metals. [21][22][23] Herein, the utilization of rare-earth elements is a signicant idea to enhance catalytic activity towards pesticide detection; the rareearth dopants act as an electron sink on the surface of the semiconductors, which reduces electron-hole pair recombination. 24 Notably, when doping La 3+ into TiO 2 NPs, an increase in the concentration of oxygen vacancies in the unit cell of the doped TiO 2 structure is expected.…”

Influence of laser and alkali treatment on an Ag/TiO2 nanotube based dopamine sensor

“…In addition, although TiO 2 anchored graphene oxide nanosheets based dopamine sensor has better sensitivity, the response time of the sensor was higher by 3 s [60]. Furthermore, the reported CoTiO 3 -TiO 2 composite [56] and N-doped carbon coated TiO 2 nanotube arrays [61], and TiO 2 nanotubes arraysceria-graphene quantum dots nanocomposite based dopamine sensor has better LOD, however, the precursors (Co 2 Ti 4 (μ-O) 6 (TFA) 8 (THF) 6 ], tetra-n-butyl orthotitanate, and nitric acid used is very complex and toxic, the fabrication process takes higher annealing temperature of 600 °C and prolonged annealing time of 3 h and 10 h, respectively. Considering the synthesis procedures and the prolonged duration of fabrication, the sensor presented here requires less time for treatment with ease of fabrication, low cost, good selectivity, good LOD, good repeatability and reusability, and excellent sensitivity characteristics.…”

Electrochemical sensor based on Ti3C2 membrane doped with UIO-66-NH2 for dopamine

“…Due to the simple operation, high sensitivity and selectivity, and immediate response of the electrochemical method, it has attracted considerable attention to detecting dopamine. However, the sensitivity and selectivity of conventional electrodes are not satisfied with the detection of dopamine due to the overlapping in the electrochemical potential window of dopamine with other substances such as uric acid (UA) and ascorbic acid (AA) [ 6 ]. Hence, to avoid this disadvantage, novel sensing nanomaterials need to be developed to improve the sensitivity and selectivity of electrochemical sensors.…”