Oxygen-vacancy modified TiO2 nanoparticles as enhanced visible-light driven photocatalysts by wrapping and chemically bonding with graphite-like carbon
Oxygen-vacancy modified TiO2 nanoparticles as enhanced visible-light driven photocatalysts by wrapping and chemically bonding with graphite-like carbon
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氧空位改性 TiO2 纳米颗粒通过与类石墨碳包裹和化学键合作为增强型可见光驱动光催化剂
DOI：
10.1039/c5ra27209b
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发表时间：
2016-01
期刊：
影响因子：
3.9
通讯作者：
Huang Yuan
中科院分区：
文献类型：
--
作者：
Qin Xiuqi;He Fang（导师）;Chen Lixia;Meng Yuhuan;Liu Jing;Zhao Naiqin;Huang Yuan
从廉价的材料中获得值得称道的光催化剂一直是研究人员努力追求的目标。以四氯化钛和葡萄糖为原料，采用水热法制备了一种由TiO 2纳米晶和类石墨碳组成的复合光催化剂（TC 800），并在800 °C下进行了热处理。结果表明，所制备的光催化剂中TiO 2纳米晶被类石墨碳包裹并发生化学键合。更重要的是，氧空位被成功地引入到二氧化钛纳米晶体。这两个方面，以及增强的石墨化，使TC 800具有更好的光催化活性相比，未经退火制备的样品降解罗丹明B（RhB）在可见光照射下。此外，当考虑到染料和相应的光催化剂的质量时，纳米复合材料的光催化活性比先前报道的TiO 2/非石墨烯碳化合物高4倍。因此，在这项研究中提出的纳米复合材料将是一个很好的选择，在可见光驱动的光催化领域，这项研究也提供了进一步的见解二氧化钛的改性。
To gain commendable photocatalysts from inexpensive materials has always been the goal that researchers are struggling for. In this study, an effective visible-light driven composite photocatalyst (TC800) composed of TiO2 nanocrystals and graphite-like carbon was prepared using titanium tetrachloride and glucose as raw materials via the hydrothermal method with subsequent annealing at 800 °C. The results show the TiO2 nanocrystals in the prepared photocatalyst are wrapped and chemically bonded with graphite-like carbon. More importantly, oxygen vacancies are successfully introduced into TiO2 nanocrystals. These two aspects, as well as the enhanced graphitization of carbon, make TC800 possess better photocatalytic activity compared to the as-prepared sample without annealing for degrading rhodamine b (RhB) under visible light irradiation. Moreover, when taking the mass of the dye and the corresponding photocatalyst into consideration, the nanocomposites present 4 times higher photocatalytic activity than the previously reported TiO2/non-graphene carbon compounds. Thus, the nanocomposites proposed in this study will be a good alternative in the field of visible-light driven photocatalysis, and this study also provides further insights into the modification of TiO2.
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影响因子：
1.6
作者：
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通讯作者：
Deyi Zhang;Heming Luo;Yi Wang;H. Feng
影响因子：
3.2
作者：
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影响因子：
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作者：
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影响因子：
15
作者：
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通讯作者：
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影响因子：
5.2
作者：
Lin, YL;Wang, TJ;Jin, Y
通讯作者：
Jin, Y