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1 Retraction to: Catalysis Letters (2018) 148:2848–2855 https://doi.org/10.1007/s10562-018-2472-7
The Editors-in-Chief have retracted this article at the request of the corresponding author. Concerns were raised regarding some figures, specifically:
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Fig. 1a: the FT-IR spectrum for GO-ZnO-SO3H appears to be highly similar to the FT-IR spectrum for GO-CuO-SO3H in the same figure, particularly in the spectral noise.
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Fig. 1b: the FT-IR spectrum for GO-ZnO-SO3H appears to be highly similar to the FT-IR spectrum for GO-CuO-SO3H in the same figure, particularly in the spectral noise.
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Fig. 4 shows a number of irregularities.
Prem Felix Siril and Tripti Vats agree to this retraction. Reena D. Souza and Amit Chattree have not responded to correspondence regarding this retraction.
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Souza, R.D., Vats, T., Chattree, A. et al. Retraction Note to: Effect of Metal Oxides on the Catalytic Activities of Sulfonated Graphene Oxide for the Esterification of Oleic Acid and Conversion of Waste Cooking Oil to Biodiesel. Catal Lett 151, 2795 (2021). https://doi.org/10.1007/s10562-021-03705-6
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DOI: https://doi.org/10.1007/s10562-021-03705-6