• Assessing the photoelectrochemical properties of C, N, F codoped TiO2 nanotubes of different lengths 

      Chatzitakis, Athanasios Eleftherios; Grandcolas, Mathieu; Xu, Kaiqi; Mei, Sen; Yang, Juan; Jensen, Ingvild Julie Thue; Simon, Christian; Norby, Truls Eivind (Peer reviewed; Journal article, 2017)
      The aim of this work has been the photoelectrochemical (PEC) study of nanostructured photoanodes based on TiO2. Highly ordered and well adhered TiO2 nanotubes (TNTs) of different lengths (∼2–20 μm) were prepared in a ...
    • Cool coatings with high near infrared transmittance for coil coated aluminium 

      Kolås, Tore; Røyset, Arne Karstein; Grandcolas, Mathieu; ten Cate, Mattijs; Lacau, Anica (Journal article; Peer reviewed, 2019)
      The temperature of a surface that is exposed to sunlight is influenced by the solar reflectance and the infrared emittance of the surface. A coating that reduces the surface temperature is often referred to as a cool ...
    • Development of Al-TiC Wire Feedstock for Additive Manufacturing by Metal Screw Extrusion 

      Langelandsvik, Geir; Grandcolas, Mathieu; Skorpen, Kristian Grøtta; Furu, Trond; Akselsen, Odd Magne; Roven, Hans Jørgen (Metals;2075-4701, Peer reviewed; Journal article, 2020)
      The development of customised aluminium alloys for welding and additive manufacturing (AM) is proposed to solve several quality issues and to enhance the mechanical integrity of components. The introduction of ceramic grain ...
    • Earth-Abundant Electrocatalysts in Proton Exchange Membrane Electrolyzers 

      Sun, Xinwei; Xu, Kaiqi; Fleischer, Christian; Liu, Xin; Grandcolas, Mathieu; Strandbakke, Ragnar; Bjørheim, Tor Svendsen; Norby, Truls Eivind; Chatzitakis, Athanasios Eleftherios (Journal article; Peer reviewed, 2018)
      In order to adopt water electrolyzers as a main hydrogen production system, it is critical to develop inexpensive and earth-abundant catalysts. Currently, both half-reactions in water splitting depend heavily on noble metal ...
    • High performance and toxicity assessment of Ta3N5 nanotubes for photoelectrochemical water splitting 

      Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Risbakk, Sanne; Yang, Mingyi; Backe, Paul Hoff; Grandcolas, Mathieu; Bjørås, Magnar; Norby, Truls Eivind (Journal article; Peer reviewed, 2019)
      In this work, Co-based cocatalysts are electrodeposited on mesoporous Ta3N5 nanotubes. The electrodeposition time is varied and the optimized photoelectrode reaches a photocurrent density of 6.3 mA/cm2 at 1.23 V vs. SHE, ...
    • High-Performance Nano Insulation Materials for Energy-Efficient Buildings 

      Jelle, Bjørn Petter; Tilset, Bente Gilbu; Gao, Tao; Grandcolas, Mathieu; Løvvik, Ole Martin; Bohne, Rolf André; Alex Mofid, Sohrab; Ng, Serina; Sagvolden, Espen (Lecture, 2017)
      High-performance nano insulation materials (Hi-Per NIM) may be developed by exploiting the Knudsen effect for reduced thermal conductivity and thus make thermal insulation materials with a nanoporous air-filled structure. ...
    • Nano Insulation Materials Exploiting the Knudsen Effect 

      Jelle, Bjørn Petter; Alex Mofid, Sohrab; Gao, Tao; Grandcolas, Mathieu; Sletnes, Malin; Sagvolden, Espen (Journal article; Peer reviewed, 2019)
      As the world's focus is turned even stronger toward miscellaneous energy efficiency and saving aspects, the development of new high-performance thermal insulation materials for building applications will play an important ...
    • Nano Insulation Materials Exploiting the Knudsen Effect 

      Jelle, Bjørn Petter; Alex Mofid, Sohrab; Gao, Tao; Grandcolas, Mathieu; Sletnes, Malin; Sagvolden, Espen (IOP Conference Series: Materials Science and Engineering;, Conference object; Journal article; Peer reviewed, 2019)
      As the world's focus is turned even stronger toward miscellaneous energy efficiency and saving aspects, the development of new high-performance thermal insulation materials for building applications will play an important ...
    • Preparation of TiO2 rutile nanorods decorated with cobalt oxide nanoparticles for solar photoelectrochemical activity 

      Grandcolas, Mathieu; Wabende, Brian; Yang, Juan; Mei, Sen; Xu, Kaiqi; Norby, Truls Eivind; Chatzitakis, Athanasios Eleftherios (Journal article; Peer reviewed, 2019)
      The present paper investigates the preparation of titanium dioxide (TiO2) nanorods decorated with cobalt oxide (Co3O4) nanoparticles and its application as solar photoelectrocatalyst. TiO2 rutile nanorods have been prepared ...
    • The High Performance Thermal Building Insulation Materials of Beyond Tomorrow - From Concept to Experimental Investigations 

      Jelle, Bjørn Petter; Gao, Tao; Sandberg, Linn Ingunn Christie; Tilset, Bente Gilbu; Grandcolas, Mathieu; Gustavsen, Arild (Chapter, 2014)
    • Thermal Superinsulation for Building Applications - From Concepts to Experimental Investigations 

      Jelle, Bjørn Petter; Gao, Tao; Sandberg, Linn Ingunn Christie; Tilset, Bente Gilbu; Grandcolas, Mathieu; Gustavsen, Arild (Journal article, 2014)
      Abstract —The application of traditional thermal insulation materials requires thicker building envelopes in order to satisfy the requirements of the emerging zero energy and zero emission buildings. This work summarizes ...
    • Utilization of Size-Tunable Hollow Silica Nanospheres for Building Thermal Insulation Applications 

      Alex Mofid, Sohrab; Jelle, Bjørn Petter; Zhao, Xinpeng; Gao, Tao; Grandcolas, Mathieu; Cunningham, Bridget; Ng, Serina; Yang, Ronggui (Peer reviewed; Journal article, 2020)
      Hollow silica nanospheres (HSNS) have been the subject of intense studies as a possible building block that may successfully bring about nano insulation materials (NIM) with substantially reduced thermal conductivity. The ...