Preparation Of TiO₂Doped Pt Using Natural Rubber Latex And Dioscorea Opposita As Biotemplates And Their Photocatalytic H₂Producion Activities

The development of modern industry consumes a large amount of fossil fuel, but what accompanied by is the dwindling of fossil fuel reserves and that modern industrial development brings serious environment pollution. In this situation, the human have an urgent need to find an abundant, clean, renewable energy source. Developping hydrogen energy as the representative of the safe and reliable, clean and efficient, sustainable energy has a important significance for Chinese sustainable development and the world’s peace and stability.In the study, we design and found a set of photocatalytic hydrogen production system for the frist time, the system includes a nitrogen purge part, gas path circulation section, photocatalytic reactor, constant temperature part and detection linking. The reaction was done in nitrogen atmosphere, and has a good control of the temperature. The gas produced was detected by gas chromatograph, it determine the gas composition and content conveniently.Titanium dioxides were synthesised using natural rubber latex and dioscorea opposita as biotemplates. Characterizations of X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-Vis emission spectroscopy (UV-Vis) were used. The method of the synthesis of mesoporous materials TiO2using emulsion biological as templates was summarized on the basics.Study on photocatalytic H2producion activities using TiO2materials synthesized of biological templates was carried out under solar light using ethanol as a sacrificial agent. Through the comparison of hydrogen production activity of TiO2at different platinic loadings, we respectively discussed the contact between materials’morphology structure synthesized with different templates and there photocatalytic activities. Besides, we discussed the effect of hydrogen production activity on different loaded amounts of platinum. The results show that the materials with different templates exhibited different surface areas and pore-size distributions, they also show different photocatalytic activitis. Second, the0.1wt%Pt-TiO2/RL exhibited higher photocatalytsic hydrogen activity;0.1wt%Pt-TiO2/RL-CTAB materials producted more hydrogen compared to0.1wt%Pt-TiO2RL. Third, when the amounts of platinum loading was0.2wt%, it had the highest activity of hydrogen production with dioscorea opposite template TiO2; The TiO2of dioscorea opposite double templates doped0.1wt%Pt showed better photocatalytic hydrogen producion activities than TiO2of dioscorea opposite template.The study established a synthesis method of TiO2of emulsion template doped Pt, simple operation, it was feasibility. The photocatalyst showed high photocatalytic activity, inspired us to study its reaction mechanism of the synthesis and water-splitting to produce hydrogen and the development of more potential value further.