Versatile heterojunction of gold nanoparticles modified phosphorus doped carbon nitride for enhanced photo-electrocatalytic sensing and degradation of 4-chlorophenol

Abstract

Increasing water pollution has imposed great threats to public health, and made efficient monitoring and remediation technologies critical to a clean environment. In this study, a versatile heterojunction of Au nanoparticles modified phosphorus doped carbon nitride (Au/P-CN) is designed and fabricated. The Au/P-CN heterostructure demonstrates improved light absorption, rapid separation of charge carriers, and improved electrical conductivity. Taking the toxic 4-chlorophenol (4-CP) as an example, an ultrasensitive photoelectrochemical (PEC) sensor is successfully demonstrated, exhibiting a wide linear range (0.1 – 52.1 μM), low detection limit ( ∼ 0.02 μM), significant stability and selectivity, as well as reliable analysis in real samples. Moreover, efficient photocatalytic degradation with a high removing efficiency ( ∼ 87 %) toward 4-CP is also achieved, outperforming its counterpart of Au nanoparticles (NPs) modified graphitic carbon nitride (Au/g − CN, ∼ 59 %). This work paves a new way for efficient and simultaneous detection and remediation of organic pollutants over versatile photoactive catalysts.

RAS ID

56585

Document Type

Journal Article

Date of Publication

2-15-2023

Volume

632

Funding Information

Higher Education Commission (HEC), Pakistan and Edith Cowan University (ECU), Australia - joint scholarship

PubMed ID

36410293

School

School of Science

Copyright

subscription content

Publisher

Elsevier

Comments

Rafique, N., Asif, A. H., Hirani, R. A. K., Wu, H., Shi, L., Zhang, S., ... & Sun, H. (2023). Versatile heterojunction of gold nanoparticles modified phosphorus doped carbon nitride for enhanced photo-electrocatalytic sensing and degradation of 4-chlorophenol. Journal of Colloid and Interface Science, 632, 117-128. https://doi.org/10.1016/j.jcis.2022.11.047

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Link to publisher version (DOI)

10.1016/j.jcis.2022.11.047