Details

Autor(en) / Beteiligte

• Kang, Qing
• Wang, Tao
• Li, Peng
• Liu, Lequan
• Chang, Kun
• Li, Mu
• Ye, Jinhua

Titel

Photocatalytic Reduction of Carbon Dioxide by Hydrous Hydrazine over Au-Cu Alloy Nanoparticles Supported on SrTiO3/TiO2 Coaxial Nanotube Arrays

Ist Teil von

• Angewandte Chemie (International ed.), 2015-01, Vol.54 (3), p.841-845

Auflage

International ed. in English

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Efficient photocatalytic conversion of CO2 into CO and hydrocarbons by hydrous hydrazine (N2H4⋅H2O) is achieved on SrTiO3/TiO2 coaxial nanotube arrays loaded with Au–Cu bimetallic alloy nanoparticles. The synergetic catalytic effect by the Au–Cu alloy nanoparticles and the fast electron‐transfer in SrTiO3/TiO2 coaxial nanoarchitecture are the main reasons for the efficiency, while N2H4⋅H2O as the H source and electron donor provides a reducing atmosphere to protect the surface Cu atoms from oxidation, therefore maintaining the alloying effect which is the basis for the high photocatalytic activity and stability. This approach opens a feasible route to enhance the photocatalytic efficiency, which also benefits the development of photocatalysts and co‐catalysts. Alloy, alloy: Au–Cu alloy nanoparticles (NPs) supported on SrTiO3/TiO2 coaxial nanotube arrays are an efficient photocatalyst for the conversion of CO2 into CO and hydrocarbons. N2H4⋅H2O provides a reductive atmosphere for stabilizing the alloy NPs during the reaction. A CO yield of 3.77 mmol g−1 h−1 and total hydrocarbon of 725.4 μmol g−1 h−1 was realized on Au3Cu@SrTiO3/TiO2 nanotube arrays.