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.
Document Type
Journal Article
Date of Publication
2-15-2023
Volume
632
PubMed ID
36410293
Publication Title
Journal of Colloid and Interface Science
Publisher
Elsevier
School
School of Science
RAS ID
56585
Funders
Higher Education Commission (HEC), Pakistan and Edith Cowan University (ECU), Australia - joint scholarship
Copyright
subscription content
First Page
117
Last Page
128
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