High sensitivity colorimetric determination of L-cysteine using gold nanoparticles functionalized graphene oxide prepared by photochemical reduction method

H. Mirac Dizman,Elif Ozcelik Kazancioglu,Takuya Shigemune,Shigeru Takahara,Nergis Arsu

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy（2022）

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摘要

•AuNps and AuNps@ GO were prepared by photochemical reduction method.•The colorimetric detection of L-cysteine was demonstrated in a nanomolar order concentration.•4-Hydroxybenzophenone was used as photoreducing agent for Au ions.•AuNps and AuNps@ GO acted as simple and sensitive nano-sensors for L-cysteine.

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关键词

Gold nanoparticle,L-cysteine,Graphene oxide,Colorimetric detection,Benzophenone

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