Photocatalytic Reduction of Carbon Dioxide by Hydrous Hydrazine over Au-Cu Alloy Nanoparticles Supported on SrTiO3/TiO2 Coaxial Nanotube Arrays
Photocatalytic Reduction of Carbon Dioxide by Hydrous Hydrazine over Au-Cu Alloy Nanoparticles Supported on SrTiO3/TiO2 Coaxial Nanotube Arrays
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DOI：
10.1002/anie.201409183
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发表时间：
2015-01-12
影响因子：
16.6
通讯作者：
Ye, Jinhua
中科院分区：
文献类型：
--
作者：
Kang, Qing;Wang, Tao;Ye, Jinhua
以水合肼（N2H4中心点H2O）为催化剂，在负载Au-Cu合金纳米粒子的SrTiO3/TiO2同轴纳米管阵列上实现了CO2高效光催化转化为CO和碳氢化合物。Au-Cu合金纳米粒子的协同催化作用和SrTiO 3/TiO 2同轴纳米结构中的快速电子转移是其高效的主要原因，而N2H4中心点H2O作为H源和电子给体提供了还原性气氛，保护表面Cu原子不被氧化，从而保持了合金化效应，这是高光催化活性和稳定性的基础。这为提高光催化效率开辟了一条可行的途径，也有利于光催化剂和助催化剂的开发。
Efficient photocatalytic conversion of CO2 into CO and hydrocarbons by hydrous hydrazine (N2H4 center dot 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 center dot 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.