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Construction and investigation on perovskite-type SrTiO₃ @ reduced graphene oxide hybrid nanocomposite for enhanced photocatalytic performance

Venkatesh, G. and Vignesh, S. and Srinivasan, M. and Palanisamy, G. and Elavarasan, N. and Bhuvaneswari, K. and Ramasamy, P. and Alam, Manawwer and Ubaidullah, Mohd and Raza, Md Kausar (2021) Construction and investigation on perovskite-type SrTiO₃ @ reduced graphene oxide hybrid nanocomposite for enhanced photocatalytic performance. Colloids and Surfaces A, 629 . Art. No. 127523. ISSN 0927-7757. doi:10.1016/j.colsurfa.2021.127523. https://resolver.caltech.edu/CaltechAUTHORS:20210927-225706318

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Abstract

To construct rGO/SrTiO₃ nanocomposite using a facile hydrothermal synthetic approach for enhanced photocatalytic application. In this study, the structural, morphological, elemental, surface compositional, optical properties, and photocatalytic activity of rGO/SrTiO₃ nanocomposites were investigated. From the various analyses, the synthesized nanocomposites produce heterostructure formation between reduced graphene oxide (rGO) and SrTiO₃. By the optical analysis, the results showed that prepared ESG 10 photocatalyst has efficient charge separation and migration with suppressed recombination probability of photogenic charge carriers. The photocatalytic reactivity of the synthesised photocatalysts was evaluated by methylene blue (MB) aqueous dye and 2-nitrophenol (2-NP) degradation under UV-Visible (UV-Vis.) light irradiation. Therefore, the ESG 10 photocatalyst exhibited a maximum removal efficiency of 91% and 81% over MB dye and 2-NP, respectively. In contrast to other samples, the introduction of rGO could suggestively enhance the photocatalytic activity by increasing the amount of rGO, and the degradation rate was also reduced after the optimal level of rGO. The radicals involved in the degradation process are investigated by scavenger experiments. The recycle experiment reveals that the ESG 10 photocatalyst does not show any major loss of activity after 4 consecutive runs. Meanwhile, the possible reaction mechanism and interface characteristics are also discussed.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.colsurfa.2021.127523DOIArticle
ORCID:
AuthorORCID
Alam, Manawwer0000-0001-9540-8532
Ubaidullah, Mohd0000-0002-0484-0299
Raza, Md Kausar0000-0002-9175-198X
Alternate Title:Construction and investigation on perovskite-type SrTiO3@ reduced graphene oxide hybrid nanocomposite for enhanced photocatalytic performance
Additional Information:© 2021 Elsevier. Received 22 July 2021, Revised 4 September 2021, Accepted 4 September 2021, Available online 9 September 2021. The authors are grateful to be the Researchers Supporting project number (RSP-2021/113), King Saud University, Riyadh, Saudi Arabia for the support. CRediT authorship contribution statement: G. Venkatesh: Conceptualization, Supervision, Methodology, Writing – review & editing; Project administration; Investigation; Writing – original draft, Visualization. S. Vignesh: Methodology, Data curation, Validation, Formal analysis. M. Srinivasan: Supervision, Visualization, Resources, Formal analysis. G. Palanisamy: Methodology, Data curation, Validation, Formal analysis. N. Elavarasan: Data curation, Validation, Formal analysis. K. Bhuvaneswari: Data curation, Validation, Formal analysis. P. Ramasamy: Data curation, Validation, Formal analysis. Manawwer Alam: Data curation, Validation, Formal analysis. Mohd Ubaidullah: Data curation, Validation, Resources, Formal analysis. Md Kausar Rasa: Data curation, Validation, Resources, Formal analysis. The authors declare no conflict of interest.
Funders:
Funding AgencyGrant Number
King Saud UniversityRSP-2021/113
Subject Keywords:Nanocomposite; Photocatalysis; Reduced graphene oxide; Perovskite; Stability
DOI:10.1016/j.colsurfa.2021.127523
Record Number:CaltechAUTHORS:20210927-225706318
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210927-225706318
Official Citation:G. Venkatesh, S. Vignesh, M. Srinivasan, G. Palanisamy, N. Elavarasan, K. Bhuvaneswari, P. Ramasamy, Manawwer Alam, Mohd Ubaidullah, Md Kausar Raza, Construction and investigation on perovskite-type SrTiO3@ reduced graphene oxide hybrid nanocomposite for enhanced photocatalytic performance, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 629, 2021, 127523, ISSN 0927-7757, https://doi.org/10.1016/j.colsurfa.2021.127523.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111073
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:28 Sep 2021 20:50
Last Modified:28 Sep 2021 20:50

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