Abstract:An outstanding photosensitive material plays the crucial role for building high-performance and practical photoelectrochemical (PEC) biosensor. Here, 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin sensitized carbon nitride composite (CN-THPP) was prepared through a facile precipitation-impregnation process....
“…Compared with a similar sensor, this CdSe/TiO 2 NTs sensor exhibits a lower LOD and higher stability. , To investigate the application in a real sample, the CdSe/TiO 2 NTs sensor was used to detect the concentrations of glucose in human serum. After diluting the normal serum of the human body by 200-fold with 0.1 M NaOH, the glucose concentration in the real sample was detected via the PEC method.…”
Compared with a single semiconductor, the heterojunction formed by two different semiconductors usually has higher light utilization and better photoelectric performance. By using stable TiO 2 nanotubes as the main subject, CdSe/TiO 2 NTs heterojunctions were synthesized by a hydrothermal method. XRD, TEM, SEM, PL, UV−vis, and EIS were used to characterize the fabricated CdSe/TiO 2 NTs. Under visible light irradiation, CdSe/TiO 2 NTs heterojunctions exhibited a higher absorption intensity and lower degree of photogenerated carrier recombination than TiO 2 . The electrons and holes were proven to be effectively separated in this heterojunction via theoretical calculation. Under CdSe/TiO 2 NTs' optimal conditions, the glucose concentrations (10−90 μM) had a linear relationship with the photocurrent value, and the detection limit was 3.1 μM. Moreover, the CdSe/ TiO 2 NTs sensor exhibited good selectivity and stability. Based on the experimental data and theoretical calculations, its PEC sensing mechanism was also illuminated.
“…Compared with a similar sensor, this CdSe/TiO 2 NTs sensor exhibits a lower LOD and higher stability. , To investigate the application in a real sample, the CdSe/TiO 2 NTs sensor was used to detect the concentrations of glucose in human serum. After diluting the normal serum of the human body by 200-fold with 0.1 M NaOH, the glucose concentration in the real sample was detected via the PEC method.…”
Compared with a single semiconductor, the heterojunction formed by two different semiconductors usually has higher light utilization and better photoelectric performance. By using stable TiO 2 nanotubes as the main subject, CdSe/TiO 2 NTs heterojunctions were synthesized by a hydrothermal method. XRD, TEM, SEM, PL, UV−vis, and EIS were used to characterize the fabricated CdSe/TiO 2 NTs. Under visible light irradiation, CdSe/TiO 2 NTs heterojunctions exhibited a higher absorption intensity and lower degree of photogenerated carrier recombination than TiO 2 . The electrons and holes were proven to be effectively separated in this heterojunction via theoretical calculation. Under CdSe/TiO 2 NTs' optimal conditions, the glucose concentrations (10−90 μM) had a linear relationship with the photocurrent value, and the detection limit was 3.1 μM. Moreover, the CdSe/ TiO 2 NTs sensor exhibited good selectivity and stability. Based on the experimental data and theoretical calculations, its PEC sensing mechanism was also illuminated.
“…12c). Comparative analysis revealed superior performance of the CdSe/TiO 2 NTs sensor in terms of lower LOD and enhanced stability compared to similar sensors, 131,132 establishing its reliability for glucose analysis in serum samples.…”
Section: Metal Oxide-based Electrochemical Sensorsmentioning
This manuscript emphasizes advancements in electrochemical sensors for real-time glucose monitoring, showcasing their pivotal role in enhancing personalized healthcare through continuous, reliable measurement of biochemical markers.
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