New carbon black-based conductive filaments for the additive manufacture of improved electrochemical sensors by fused deposition modeling.

ABSTRACT: The development of a homemade carbon black composite filament with polylactic acid (CB-PLA) is reported. Optimized filaments containing 28.5% wt. of carbon black were obtained and employed in the 3D printing of improved electrochemical sensors by fused deposition modeling (FDM) technique. The fabricated filaments were used to construct a simple electrochemical system, which was explored for detecting catechol and hydroquinone in water samples and detecting hydrogen peroxide in milk. The determination of catechol and hydroquinone was successfully performed by differential pulse voltammetry, presenting LOD values of 0.02 and 0.22 µmol L^-1, respectively, and recovery values ranging from 91.1 to 112% in tap water. Furthermore, the modification of CB-PLA electrodes with Prussian blue

SUBMITTER: Stefano JS 

PROVIDER: S-EPMC9550156 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature