一种新型的基于石墨相氮化碳的光电传感器应用于草甘膦的检测

A signal-on photoelectrochemical strategy with graphitic carbon nitride decorated Ag+ based on the binding-induced internal-displacement for glyphosate monitoring was established. graphite-like carbon nitride as visible light-active material possesses fine photocatalytic activity, the pyridine nitrogen units on g-C3N4 backbone could absorb Ag+ through chemical absorption and then photo-generated electrons would be reacted by Ag+, leading to the inhibition of electrons transfer and decrement of photocurrent. However, the chelate effect between Ag+ and glyphosate can promoted the constitution of current circuit and signal improvement. This economical and sensitive sensor system could be broadly applied for substance detection.