| With the continuous improvement of scientific and technological level of the world, people are increasing the dependence on energy at an unprecedented speed while enjoying the convenience brought by development of science and technology. However, the excessive use of traditional energy is not only easy led to the pollution, but also facing the sustainable problem. Energy is key question to the survival and development of human beings, the energy determines future. Nowadays, the only way to solve this problem is to find a renewable clean energy which used to replace all the traditional energy. From the present point of view, solar energy is the best choice. Via the conversion of solar energy to other chemical energy, especially clean and renewable hydrogen, we can find a good solution to the enegery problems. The main research content of this paper is through the modification of TiO2 aerogels and MOFs materials, resulting in a higher catalytic efficiency of the photocatalyst. The main contents of this paper include:(1) TiO2 aerogels materials were synthesized by sol-gel method, MIL-125 was synthesized by reflux method and semiconductor catalyst CuO were combined with three different semiconductor composite photocatalytic materials:CuO/TiO2 aerogels, CuO/MIL-125 and CuO-TiO2/MIL-125. The physical and chemical properties of the materials were characterized by powder X ray diffraction, scanning electron microscope, N2 adsorption desorption isothermal test, transmission electron microscope and so on.(2) Three materials were conducted in the pohtocatalytical hydrogen production. Experimental results show that when 50mg catalyst was used, with 10% methanol as sacrificial agent and simulated solar light as the light source, the reaction temperature is 10 degrees,compared to pure TiO2 aerogels,the material exhibited good catalytic activity: the CuO-MIL-125 also can exhibit catalytic activity under solar light irradiation. |
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