A porous carbon nitride modified with cobalt phosphide as an efficient visible-light harvesting nanocomposite for photoelectrochemical enzymatic sensing of glucose.
Dong LiangJunjun LuoYaliang HuangXiang LiangXiaoqing QiuJianxiu WangMinghui YangPublished in: Mikrochimica acta (2019)
A porous carbon nitride (PCN) modified with cobalt phosphides (CoP) was synthesized. In this nanocomposite, the CoP (in different weight fractions) serves (a) as the electron acceptor to accelerate the photoinduced charge separation, and (b) as the photosensitizer to increase the photoelectrochemical (PEC) response to visible light. Dissolved oxygen acts as the electron acceptor to generate PEC current. If glucose oxidase (GOx) catalyzes the oxidation of glucose, dissolved oxygen is consumed. This leads to the suppression of photocurrent. The photocathode biosensor has a linear response in the 0.05 to 0.7 mM glucose concentration range and a 1.1 μM limit of detection. Graphical abstractSchematic of a photoelectrochemical glucose biosensor based on the use of cobalt phosphide-modified porous carbon nitrides. PCN: porous carbon nitride; CoP: cobalt phosphide.
Keyphrases
- visible light
- metal organic framework
- quantum dots
- blood glucose
- reduced graphene oxide
- solar cells
- label free
- gold nanoparticles
- sensitive detection
- carbon nanotubes
- photodynamic therapy
- energy transfer
- blood pressure
- organic matter
- type diabetes
- body mass index
- metabolic syndrome
- mass spectrometry
- high resolution
- oxide nanoparticles