Publication detail

Photocatalytic degradation of xanthate in flotation plant tailings by TiO2/graphene nanocomposites

Jiang, M., Zhang, M., Wang, L., Fei, Y., Wang, S., Núñez-Delgado, A., Bokhari, A., Race, M., Khataee, A., Klemeš, J.J., Xing., L., Han, N.

Original Title

Photocatalytic degradation of xanthate in flotation plant tailings by TiO2/graphene nanocomposites

Type

journal article in Web of Science

Language

English

Original Abstract

This study has invented a novel composite photocatalytic material of TiO2/graphene (TiO2/G) via the hydrothermal method. The prepared TiO2/graphene (TiO2/G) composite catalysts were investigated in detail using various characterisation experiments. The characterisation experiments indicated that the TiO2/graphene (TiO2/G) nanocomposites were successfully prepared. It can be observed that the TiO2 nanoparticles were observed uniformly distributing on the graphene oxide (GO) and the prepared TiO2/graphene (TiO2/G) nanocomposites possess huge specific surface area, small pore size, and low electron-hole pair complexation rate to degrade the pollutants. For the first time, TiO2/G is used as a photocatalytic material to treat mineral processing wastewater. Compared to GO and TiO2, under simulated light irradiation, the photodegradation efficiency of 18% TiO2/G samples reached 97.03% after 100 min. By successfully anchoring TiO2 on GO, the photoresponse range of TiO2/G was broadened (from 200–380 nm to 200–800 nm). The activity was also further improved (after 100 min of simulated light, the photocatalytic efficiency of pure TiO2 was only 17.88%, and the photocatalytic efficiency of 18% TiO2/G was 5.43 times higher than that of pure TiO2). This work advances the development of a potential photo-, photoelectro-systems for the treatment of real mineral processing wastewater.

Keywords

Graphene oxide; Mineral processing; Photodegradation; TiO2; Wastewater treatment

Authors

Jiang, M., Zhang, M., Wang, L., Fei, Y., Wang, S., Núñez-Delgado, A., Bokhari, A., Race, M., Khataee, A., Klemeš, J.J., Xing., L., Han, N.

Released

1. 3. 2022

Publisher

Elsevier B.V.

ISBN

1385-8947

Periodical

CHEMICAL ENGINEERING JOURNAL

Number

431

State

Swiss Confederation

Pages from

134104

Pages to

134104

Pages count

11

URL

https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S1385894721056783

BibTex

@article{BUT175888,
  author="Syed Awais Ali Shah {Bokhari} and Jiří {Klemeš}",
  title="Photocatalytic degradation of xanthate in flotation plant tailings by TiO2/graphene nanocomposites",
  journal="CHEMICAL ENGINEERING JOURNAL",
  year="2022",
  number="431",
  pages="134104--134104",
  doi="10.1016/j.cej.2021.134104",
  issn="1385-8947",
  url="https://www-sciencedirect-com.ezproxy.lib.vutbr.cz/science/article/pii/S1385894721056783"
}