Synchronized wet-chemical development of 2-dimensional MoS2 and g-C3N4/MoS2 QDs nanocomposite as efficient photocatalysts for detoxification of aqueous dye solutions
- Authors
- Azhar, Aleena; Basit, Muhammad Abdul; Mehmood, Waqar; Ali, Muhammad Aanish; Zahid, Saira; Ahmad, Muneeb; Zaidi, Syed Jazib Abbas; Park, Tae Joo
- Issue Date
- Jan-2023
- Publisher
- Elsevier BV
- Keywords
- MoS2; p-SILAR; Photocatalysts; Dye degradation; BET
- Citation
- Colloids and Surfaces A: Physicochemical and Engineering Aspects, v.657, pp 1 - 9
- Pages
- 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- Colloids and Surfaces A: Physicochemical and Engineering Aspects
- Volume
- 657
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/112623
- DOI
- 10.1016/j.colsurfa.2022.130581
- ISSN
- 0927-7757
1873-4359
- Abstract
- The photocatalytic performance of graphitic carbon nitride (g-C3N4) is improved by the introduction of mo-lybdenum disulfide (MoS2) quantum dots (QDs), aiming the enhanced visible light absorbance in resultant 2 -dimensional g-C3N4/MoS2, termed as GCN/MoS2 hereafter. A novel synthetic approach i.e., pseudo-successive ionic layer adsorption and reaction (p-SILAR) was employed to deposit MoS2 QDs on g-C3N4 and to salvage 2 -dimensional MoS2 concomitantly. The results of the photocatalytic activity affirm that GCN/MoS2 worked as a better photocatalyst than the pure g-C3N4, while salvaged MoS2 also showed reasonable degradation of Rhodamine-B (RhB) dye. The average pore size (measured with BET analysis) of GCN/MoS2 was reduced to 31.91 nm from 33.11 nm (for g-C3N4), indicating effectual nanoscale deposition of MoS2 which resulted in a decrease in the overall bandgap alignment of the composite from 2.8 eV to 2.2 eV. In-depth material charac-terization and photocatalytic analysis was carried out to affirm that p-SILAR serves as a suitable synthesis route for the development of GCN/MoS2 nanocomposite as well as salvaged MoS2.
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