University of Oulu

Velma Beri Kimbi Yaah, Satu Ojala, Hamza Khallok, Tiina Laitinen, Sergio Botelho de Oliveira, Hybrid carbon materials: Synthesis, characterization, and application in the removal of pharmaceuticals from water, Journal of Water Process Engineering, Volume 43, 2021, 102279, ISSN 2214-7144,

Hybrid carbon materials : synthesis, characterization, and application in the removal of pharmaceuticals from water

Saved in:
Author: Kimbi Yaah, Velma Beri1; Ojala, Satu1; Khallok, Hamza1;
Organizations: 1Environmental and Chemical Engineering Research Unit, Faculty of technology, PL 4300, 90014, University of Oulu, Oulu, Finland
2Department of Academic Areas II, 74055-110 Goiânia, Brazil
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.3 MB)
Persistent link:
Language: English
Published: Elsevier, 2021
Publish Date: 2021-11-10


Hydrothermal carbonization was used to develop novel carbon-based hybrids for the removal of diclofenac and amoxicillin from water. These non-crystalline and partly graphitic materials can be regenerated by photocatalysis. The synthesized materials have beneficial oxygen containing surface functional groups, of which C=O were observed only for tungsten-containing hybrid. An interaction between W, C and TiO₂ was observed, which could influence the photocatalytic performance. The best performance was observed for W-containing hybrid (HC butox W) at pH 3 (diclofenac photocatalytic degradation of 80% and removal of 93% after 60 min). Significant part of the removal appeared due to precipitation of diclofenac on the hybrid material surface. Removal efficiency was fully recovered after regeneration at pH 7 under uv-B irradiation. With the same hybrid, 10% removal of amoxicillin after 30 min with 42% photocatalytic degradation at non-adjusted pH was reached. In general, tungsten improved the photocatalytic activity of material, while specific surface area played only a minor role.

see all

Series: Journal of water process engineering
ISSN: 2214-7144
ISSN-E: 2214-7144
ISSN-L: 2214-7144
Volume: 43
Article number: 102279
DOI: 10.1016/j.jwpe.2021.102279
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
215 Chemical engineering
Funding: This work was funded by I4Future doctoral program that has received funding from the EU H2020 under the Marie Sklodowska Curie grant agreement No 713606, and the Academy of Finland via ELECTRA-project (Decision 289266). The authors would like to acknowledge the Chemistry unit in the Federal Institute and Federal University of Goiás, Brazil. The characterization infrastructure available at the Center of Material Analysis at the University of Oulu was used in this research.
Academy of Finland Grant Number: 289266
Detailed Information: 289266 (Academy of Finland Funding decision)
Copyright information: © 2021 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (