Abstract
Dissolved oxygen (DO) is a crucial indicator of the aquatic environment. The electrochemical DO sensor is renowned for superior precision. However, the unfavorable biofilm growth on the electrode surface and affect its sensitivity. H2O2, generated from the 2e- pathway ORR, emerges as a potent for degrading the biofilm attached on the electrode surface. Developing electrocatalyst material for selective 2e- pathway ORR that is challenging, while most are work for 4e- pathway. Herein, we design P-CNQD attaching to functionalized graphene (P-CNQD/Gr) that possesses highly selective 2e- pathway ORR. Upon the combination, the P-CNQDs were successful in altering the H2O2 selectivity, resulting in 85% H2O2 selectivity inside neutral medium. The reliable electrocatalyst with outstanding sensitivity and self-antibiofouling performance to be employed in fish farming Figure 1
Published Version
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