Syngas production by electrocatalytic reduction of CO2 using Ag-decorated TiO2 nanotubes |
| |
| Affiliation: | 1. Department of Applied Science and Technology, Politecnico di Torino, Turin, Italy;2. Center for Sustainable Future Technologies (CSFT@POLITO), Istituto Italiano di Tecnologia, Turin, Italy;3. Catalysis Engineering, Dept. of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, Delft, the Netherlands;1. Department of Materials Science and Engineering, WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058, Erlangen, Germany;2. Chemistry Department, Faculty of Sciences, King Abdulaziz University, 80203, Jeddah, Saudi Arabia;1. School of Mechanical Engineering, Pusan National University, Busan 46241, South Korea;2. Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk 37673, South Korea;1. School of Mechanical Engineering, Pusan National University, Busan 46241, South Korea;2. Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk 37673, South Korea;1. National Institute of Alternative Technologies for the Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactivies (INCT-DATREM), Universidade Estadual Paulista (Unesp), Instituto de Química, Araraquara. Av. Prof. Francisco Degni, 55, 14800-060, Araraquara, SP, Brazil;2. Laboratório de Bioinorgânica e Catálise, Departamento de Química, Centro Politécnico, Universidade Federal do Paraná (UFPR), CP 19061, CEP 81531980, Curitiba PR, Brazil |
| |
| Abstract: | Huge efforts have been done in the last years on electrochemical and photoelectrochemical reduction of CO2 to offer a sustainable route to recycle CO2. A promising route is to electrochemically reduce CO2 into CO which, by combination with hydrogen, can be used as a feedstock to different added-value products or fuels. Herein, perpendicular oriented TiO2 nanotubes (NTs) on the electrode plate were grown by anodic oxidation of titanium substrate and then decorated by a low loading of silver nanoparticles deposited by sputtering (i.e. Ag/TiO2 NTs). Due to their quasi one-dimensional arrangement, TiO2 NTs are able to provide higher surface area for Ag adhesion and superior electron transport properties than other Ti substrates (e.g. Ti foil and TiO2 nanoparticles), as confirmed by electrochemical (CV, EIS, electrochemical active surface area) and chemical/morphological analysis (FESEM, TEM, EDS). These characteristics together with the role of the TiO2 NTs to enhance the stability of CO2·- intermediate formed due to titania redox couple (TiIV/TiIII) lead to an improvement of the CO production in the Ag/TiO2 NTs electrodes. Particular attention has been devoted to reduce the loading of noble metal in the electrode(14.5 %w/%w) and to increase the catalysts active surface area in order to decrease the required overpotential. |
| |
| Keywords: | Electrocatalyst CO2 reduction Titania nanotube Silver nano particles Electrochemical surface area |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
