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

Document Type

Journal Article

Publication Title

Journal of Colloid and Interface Science

Volume

632

First Page

117

Last Page

128

PubMed ID

36410293

Publisher

Elsevier

School

School of Science

RAS ID

56585

Funders

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

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

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.

DOI

10.1016/j.jcis.2022.11.047

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