Highly Efficient Mesoporous Carbonaceous CeO2Catalyst for Dephosphorylation

Aashima Sharma, Surinder K. Mehta, Avtar S. Matharu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Phosphorus is fast becoming a critical element, as the global supply and demand are reaching unsustainable levels. Herein, the synthesis, characterization, and applicability of a novel biomass-derived mesoporous carbonaceous material decorated with CeO2 (CeO2-S400) as an efficient catalyst for the dephosphorylation of 4-nitrophenyl phosphate disodium salt hexahydrate are reported. The presence and distribution of CeO2 are evidenced by inductively coupled plasma mass spectrometry (ICP-MS) (118.7 mg/g), high-resolution transmission electron microscopy (HRTEM), and energy dispersive X-ray (EDX) mapping. The apparent rate constant for the efficient catalysis of 4-nitrophenyl phosphate disodium salt hexahydrate was 0.097 ± 0.01 for CeO2-ES and 0.15 ± 0.03 min-1 for CeO2-S400, which followed first-order kinetics. Rate constants normalized by the catalytic loading (km) were 80.84 and 15.00 g-1 min-1 for CeO2-ES and CeO2-S400, respectively, and the normalized rate constants with respect to surface area were 3.38 and 0.04 m-2 min-1 for CeO2-ES and CeO2-S400, respectively. This indicates that the presence of CeO2 nanoparticles has a catalytic effect on the dephosphorylation reaction.

Original languageEnglish
Pages (from-to)22551–22558
JournalACS Omega
Early online date17 Jun 2022
Publication statusPublished - 5 Jul 2022

Bibliographical note

Funding Information:
A.S. acknowledges the Commonwealth Scholarship Commission, United Kingdom, for the Commonwealth Split-site Scholarship award 2019 and CSIR, India, for the SRF (open) fellowship at the University of York under the supervision of A.S.M.

Publisher Copyright:
© 2022 The Authors. Published by American Chemical Society.

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