Kaiqi Xu

Image of Kaiqi Xu
Norwegian version of this page
Mobile phone 48671413
Room 32:103
Username
Visiting address Gaustadalléen 21 Forskningsparken FERMiO
Postal address Postboks 1126 Blindern 0318 OSLO

Academic Interests

I am interested in developing and modifying semiconductors for photoelectrodes that have broad light absorption spectra, high energy conversion efficiencies, long operation hours and good economical viabilities.

At present, we are working on the synthesis and nanotube modification of Ta3N5, an n-type semiconductor with short bandgap and could be a promising candidate for a highly efficient photoelectrode. Experimental studies will be combined with DFT-based modeling to investigate the electronic properties of Ta3N5 nanotubes. 

Another interest is the development of a solid-state photoelectrochemical (PEC) cell. We have designed and fabricated an all solid-state PEC cell for water splitting and fuel production, e.g. the production of Hand formates from the reduction of Hand CO2, respectively. Further development of this solid-state PEC cell will be the integration of biocatalytic enzymes, e.g. FDH, to catalyze the fuel production and reduce the cost as well.

A schematic of the solid-state PEC cell with photosensitive nanotubes as the photoelectrode

Background

Education

Ph.D. candidate, Department of Chemistry, University of Oslo, 10.2016-10.2019

M.Sc. in Chemistry, Department of Chemistry, University of Oslo, 08.2014-06.2016

B.Ch. E., Department of Chemical Engineering and Technology, Taiyuan University of Technology, China, 08.2008-07.2012

Others

Patent Engineer, Weizheng intellectual property agency Co., Ltd., China, 2013-2014

Water treatment engineer, Wanhua Chemistry Co., Ltd., China, 2012-2013

Collaborations

SINTEF Materilas and Chemistry, Oslo

Oslo University Hospital

 

Tags: SMN, FASE, FERMiO, kjemi, Nanomaterials, Chemistry

Publications

  • Chatzitakis, Athanasios Eleftherios; Grandcolas, Mathieu; Xu, Kaiqi; Mei, Sen; Yang, Juan; Jensen, Ingvild Julie Thue; Simon, Christian & Norby, Truls Eivind (2017). Assessing the photoelectrochemical properties of C, N, F codoped TiO2 nanotubes of different lengths. Catalysis Today.  ISSN 0920-5861.  287, s 161- 168 . doi: 10.1016/j.cattod.2016.11.040 Show summary
  • Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios & Norby, Truls (2017). Solid-state photoelectrochemical cell with TiO2 nanotubes for water splitting. Photochemical and Photobiological Sciences.  ISSN 1474-905X.  16(1), s 10- 16 . doi: 10.1039/c6pp00217j

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  • Chatzitakis, Athanasios Eleftherios; Xu, Kaiqi & Norby, Truls Eivind (2017). TiO2 nanotubes as photoanode electrodes in solid-state photoelectrochemical cells.
  • Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Bjørheim, Tor Svendsen & Norby, Truls Eivind (2017). Fuels from the sun, sea and air-by solid-state photoelectrochemical cell.
  • Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Bjørheim, Tor Svendsen & Norby, Truls Eivind (2017). Tantalum oxynitride for photoelectrochemical water splitting.
  • Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Norby, Truls Eivind; Mei, Sen; Juan, Yang; Grandcolas, Mathieu & Simen, Christian (2017). Solid-state photoelectrochemical Cell with Tantalum Nitride Nanotubes as Photoanode.
  • Yang, Juan; Mei, Sen; Grandcolas, Mathieu; Simon, Christian; Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Norby, Truls Eivind; Yang, Mingyi; Backe, Paul Hoff & Bjørås, Magnar (2017). Synthesis of Nanosized Cobalt Oxides and Application in a Bio-hybrid Photoelectrochemical Cell for CO2 Utilization. Show summary
  • Chatzitakis, Athanasios Eleftherios; Grandcolas, Mathieu; Xu, Kaiqi; Mei, Sen; Yang, Juan; Simon, Christian & Norby, Truls (2016). Assessing the photoelectrocatalytic activity of C, N, F codoped TiO2 nanotubes of different lengths for oxygen evolution.
  • Fleischer, Christian; Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios & Norby, Truls Eivind (2016). Development of high surface area TiO2 photo-electrodes and the significance of solid-state proton conductor in water splitting photoelectrochemical cell..
  • Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios & Norby, Truls (2016). An All-Solid-State Photoelectrochemical Cell for Water Splitting.
  • Xu, Kaiqi & Norby, Truls Eivind (2016). All-Solid-State Photoelectrochemical Water Splitting for Hydrogen Generation. Show summary

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Published Jan. 12, 2017 4:05 PM - Last modified Feb. 2, 2017 9:02 PM