Fabrication of sulfur doped exfoliated gCN photocatalyst for enhanced visible light degradation of pernicious organic pollutants and their photocatalytic antibacterial activity

被引：6

作者：

Attri, Prerna ^{[1
]}

Chauhan, Moondeep ^{[2
]}

Singh, Rajender ^{[3
]}

Kumar, Sandeep ^{[4
]}

Garg, Preeti ^{[1
]}

Lim, Dong-Kwon ^{[5
]}

Chaudhary, Ganga Ram ^{[1
,3
]}

机构：

[1] Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh

[2] Central Instrumental Lab, Amity University, Panjab, Mohali

[3] Sophisticated Analytical Instrumentation Facility (SAIF)/CIL, Panjab University, Chandigarh

[4] Physics Department, Punjab Engineering College (Deemed to be University), Chandigarh

[5] KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul

来源：

Chemosphere | 2024年 / 364卷

关键词：

Doping; Exfoliation; gCN; Metal free catalyst; Staphylococcus aureus; Tetracycline; Visible light photocatalysis;

D O I：

10.1016/j.chemosphere.2024.143178

中图分类号：

学科分类号：

摘要：

The synthesis of sulfur-doped exfoliated graphitic carbon nitride (S-gCN) photocatalyst was achieved by the implementation of a two-step calcination technique. The XRD results revealed that all the fabricated photocatalytic materials were crystalline in nature. The inclusion of 5% sulfur in gCN led to a conspicuous escalation in the surface area of photocatalyst, rising from 10.294 to 61.185 m2g⁻1. Morphological scrutiny of the samples using FE-SEM revealed that pristine gCN exhibited tightly stacked small nanosheets, whereas inclusion of sulfur and exfoliation resulted in generation of loosely distributed large nanosheet. Furthermore, the inclusion of sulfur also induced a shift in the energy band gap (Eg) from 2.81 eV to 2.63 eV, making it felicitous for investigation as proficient visible light photocatalyst. Additionally, the photoluminescence photo-induced charge carrier recombination behavior revealed a reduced peak intensity for 5% S-gCN compared to other synthesized compositions. This observation can be directly linked to the minimized electron-hole pairs recombination during photocatalysis, underscoring its superior photocatalytic performance. Our findings revealed that the 5% S-gCN photocatalyst exhibit the most promising attributes, it degraded Tetracycline drug, Chlorpyrifos pesticide and Eriochrome Black T dye under visible light irradiation almost ∼4 times more efficiently than pristine gCN. Additionally, exceptional visible light photocatalytic antibacterial efficacy was also perceived by 5% S-gCN against S. aureus bacteria. Overall, the present research sheds light on how doping and exfoliation interact to modify the structure and catalytic properties of gCN, paving the way for the development of outstanding performance, visible light-responsive efficient photocatalysts for environmental restoration. © 2024 Elsevier Ltd

引用

共 50 条

[1]

Attri P., Garg P., Chauhan M., Singh R., Sharma R.K., Kumar S., Lim D.K., Chaudhary G.R., Metal doped BiOCl nano-architectures (M-BiOCl, M= Ni, Mo, Cd, Co) for efficient visible light photocatalytic and antibacterial behaviour, J. Environ. Chem. Eng., 11, 2, (2023)

[2]

Attri P., Garg P., Sharma P., Singh R., Chauhan M., Lim D.K., Kumar S., Chaudhary G.R., Precursor-dependent fabrication of exfoliated graphitic carbon nitride (gCN) for enhanced photocatalytic and antimicrobial activity under visible light irradiation, J. Clean. Prod., (2023)

[3]

Chen J., Shen S.H., Guo P.H., Wu P., Guo L.J., Spatial engineering of photo-active sites on gC3N4 for efficient solar hydrogen generation, J. Mater. Chem. A, 2, 13, pp. 4605-4612, (2014)

[4]

Deng F., Zhao L., Luo X., Luo S., Dionysiou D.D., Highly efficient visible-light photocatalytic performance of Ag/AgIn5S8 for degradation of tetracycline hydrochloride and treatment of real pharmaceutical industry wastewater, Chem. Eng. J., 333, pp. 423-433, (2018)

[5]

Di Y., Ma C., Fu Y., Dong X., Liu X., Ma H., Engineering cationic sulfur-doped Co3O4 architectures with exposing high-reactive (112) facets for photoelectrocatalytic water purification, ACS Appl. Mater. Interfaces, 13, pp. 8405-8416, (2021)

[6]

Du Y., Zhao L., Chen H., Huang Z., He X., Fang W., Li W., Zeng X., Zhang F., Synthesis of cobalt-doped tubular carbon nitride from organic–inorganic hybrid precursor for photocatalytic hydrogen generation, J. Mater. Sci., 55, pp. 1973-1983, (2020)

[7]

Fan B., Tan Y., Wang J., Zhang B., Peng Y., Yuan C., Guan C., Gao X., Cui S., Application of magnetic composites in removal of tetracycline through adsorption and advanced oxidation processes (AOPs): a review, Processes, 9, 9, (2021)

[8]

Fang H.B., Zhang X.H., Wu J., Li N., Zheng Y.Z., Tao X., Fragmented phosphorus-doped graphitic carbon nitride nanoflakes with broad sub-bandgap absorption for highly efficient visible-light photocatalytic hydrogen evolution, Appl. Catal. B Environ., 225, pp. 397-405, (2018)

[9]

Ge Z., Yu A., Lu R., Preparation of Li-doped graphitic carbon nitride with enhanced visible-light photoactivity, Mater. Lett., 250, pp. 9-11, (2019)

[10]

Guo F., Shi W., Li M., Shi Y., Wen H., 2D/2D Z-scheme heterojunction of CuInS2/g-C3N4 for enhanced visible-light-driven photocatalytic activity towards the degradation of tetracycline, Sep. Purif. Technol., 210, pp. 608-615, (2019)

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