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Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy

Publication ,  Journal Article
de Carvalho, NA; Wang, Y; Morales-Soto, N; Waldeck, D; Bibby, K; Doudrick, K; Gilbertson, LM
Published in: ACS ES and T Water
February 12, 2021

Graphitic carbon nitride (g-C3N4) is a promising photocatalyst for bacterial disinfection. Herein, carbon doping (C-doping) was employed to manipulate g-C3N4 physicochemical properties and demonstrate a potential avenue toward rationally designing g-C3N4 for improved antibacterial efficacy. Six g-C3N4 samples were prepared by thermal condensation with increasing amounts of barbituric acid (5-50% C-doping) and varying pyrolysis temperatures (550 and 600 °C). Relationships among the synthesis approach, the resulting physicochemical properties, and the efficacy for bacterial inactivation are identified. C-Doping was found to decrease the Escherichia coli (E. coli) K12 inactivation rate, and the g-C3N4 synthesized at 550 °C (base sample) was found to have the best photocatalytic performance. The results indicate significant E. coli inactivation with 5% and 15% C-doped samples, revealing that C-doping is an effective avenue for expanding the visible-light range of absorption while inducing disinfection. In addition, the base sample is effective against clinically and environmentally relevant antibiotic-resistant pathogens, methicillin-resistant Staphylococcus aureus (MRSA) and vancomycinresistant Enterococcus faecalis (VRE).

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Published In

ACS ES and T Water

DOI

EISSN

2690-0637

Publication Date

February 12, 2021

Volume

1

Issue

2

Start / End Page

269 / 280
 

Citation

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de Carvalho, N. A., Wang, Y., Morales-Soto, N., Waldeck, D., Bibby, K., Doudrick, K., & Gilbertson, L. M. (2021). Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy. ACS ES and T Water, 1(2), 269–280. https://doi.org/10.1021/ACSESTWATER.0C00053
Carvalho, N. A. de, Y. Wang, N. Morales-Soto, D. Waldeck, K. Bibby, K. Doudrick, and L. M. Gilbertson. “Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy.” ACS ES and T Water 1, no. 2 (February 12, 2021): 269–80. https://doi.org/10.1021/ACSESTWATER.0C00053.
de Carvalho NA, Wang Y, Morales-Soto N, Waldeck D, Bibby K, Doudrick K, et al. Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy. ACS ES and T Water. 2021 Feb 12;1(2):269–80.
de Carvalho, N. A., et al. “Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy.” ACS ES and T Water, vol. 1, no. 2, Feb. 2021, pp. 269–80. Scopus, doi:10.1021/ACSESTWATER.0C00053.
de Carvalho NA, Wang Y, Morales-Soto N, Waldeck D, Bibby K, Doudrick K, Gilbertson LM. Using C-Doping to Identify Photocatalytic Properties of Graphitic Carbon Nitride That Govern Antibacterial Efficacy. ACS ES and T Water. 2021 Feb 12;1(2):269–280.

Published In

ACS ES and T Water

DOI

EISSN

2690-0637

Publication Date

February 12, 2021

Volume

1

Issue

2

Start / End Page

269 / 280