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[½»Á÷] ÇëÎÊÒѱ¨µÀµÄ¹â´ß»¯²úÇâ×î¶àÊǶàÉÙ£¿10 mmol per hour per gram of photocatalysts

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[ Last edited by pzypdl on 2013-2-19 at 22:24 ]
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4Â¥: Originally posted by liuyinallen at 2013-02-05 04:42:05
Agreed with "doctorzyjunior" said.
FYI, please check some references from Dr. Kudo's group, Dr. Domen's group and Dr. H. Teng's group (from National Cheng Kung University, Taiwan). I did s ...

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5Â¥2013-02-05 14:12:29
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polyoxometalate

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X Chen et al, Science 2011, DOI: 10.1126/science.1200448


The full spectrum solar simulator was used as the excitation source, which produces about 1 sun power at the sample consisting of black TiO2 nanocrystals loaded with 0.6 wt% Pt, placed in a Pyrex glass container filled with 1:1 watermethanol solution. (methanol is the sacrificial reagent and the anodic reaction generating O2 from H2O is not occurring in this system). Measurements were conducted initially for 15 consecutive days; each day the sample was irradiated for 5 hours, and then stored in darkness overnight before testing the next day. We found that 1 hour of solar irradiation generated 0.2 ¡À 0.02 mmol of H2 using 0.02 grams of disorderengineered black TiO2 nanocrystals (10 mmol per hour per gram of photocatalysts)
6Â¥2013-02-05 14:22:08
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polyoxometalate

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The energy conversion efficiency for solar hydrogen production, defined as the ratio between the energy of solar-produced hydrogen and the energy of the incident sunlight, reaches 24% for disorderengineered black TiO2 nanocrystals.
7Â¥2013-02-05 14:23:21
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polyoxometalate

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We also measured photocatalytic H2 production using black TiO2 as the photocatalyst with only visible and infrared light by filtering out incident light with wavelengths shorter than about 400 nm. The rate of H2 production dropped to 0.1 mmol +/- 0.02 per hour per gram of photocatalysts, reflecting the activity of the extended tail or mid-gap states of the thin disordered layer that have a narrower band gap created by disordering.
8Â¥2013-02-05 14:25:58
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