Copper-zinc-titania nanocomposite as catalyst for CO2 photo- reduction: A surface deactivation study

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Abstract

In this paper, a surface deactivation study of Cu1.0-Zn0.5-Ti98.5 oxide nano composite (CZT-ONC) as catalyst for photo-reduction of CO2 in aqueous solution is reported. The photoreduction experiments were conducted through five experimental cycles. The results demonstrated that the activity of the CZT-ONC decreased by increasing the number of testing cycle. The causes for declining the activity of the CZT-ONC catalyst was studied by investigating the surface condition of the catalyst before and after used by mean X-ray photoelectron spectroscopy (XPS) and field emission-scanning electron spectroscopy (FE-SEM) techniques and the results are discussed. It was found that the surface conditions (chemical state of the elements and morphology) of the CZT- ONC catalyst have been critically altered. Change in surface condition pointed that the deactivation process on the surface of the CZT-ONC was occurred and it could be considered to be the reasons for declining of the activity.

Original languageEnglish
Title of host publicationAdvanced Materials Science and Technology - ICAMST 2013
PublisherTrans Tech Publications
Pages134-140
Number of pages7
ISBN (Print)9783038350316
DOIs
Publication statusPublished - 1 Jan 2014
Event2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013 - Yogyakarta, Indonesia
Duration: 17 Sep 201318 Sep 2013

Publication series

NameAdvanced Materials Research
Volume896
ISSN (Print)1022-6680

Conference

Conference2013 International Conference on Advanced Materials Science and Technology, ICAMST 2013
CountryIndonesia
CityYogyakarta
Period17/09/1318/09/13

Keywords

  • Carbon dioxide
  • Composite
  • Copper-zinc-titania
  • FE-SEM
  • Nanostructure
  • Photocatalytic
  • XPS

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