Composites between photoactive anatase-type TiO2 and adsorptive carbon
Composites between photoactive anatase-type TiO2 and adsorptive carbon
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DOI：
10.1016/s0169-4332(02)00081-8
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发表时间：
2002-08
影响因子：
6.7
通讯作者：
T. Tsumura;N. Kojitani;H. Umemura;M. Toyoda;M. Inagaki
中科院分区：
文献类型：
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作者：
T. Tsumura;N. Kojitani;H. Umemura;M. Toyoda;M. Inagaki
制备了两种锐钛矿型二氧化钛/碳复合材料，即碳包覆二氧化钛和二氧化钛负载剥离石墨。碳包覆的二氧化钛对亚甲基蓝(MB)的分解表现出有效的光催化活性。实验证明，包覆在二氧化钛表面的碳层能够吸附其水溶液中的亚甲基蓝，并将其转移到二氧化钛表面进行光催化分解。发现碳涂层在高温下稳定了锐钛矿型结构，从而获得了结晶度高、活性高的锐钛矿型结构。二氧化钛负载的剥离石墨既可以作为重油的吸收剂，也可以在紫外光照射下催化分解吸附的重油。
Two composites between anatase-type TiO2and carbon were prepared, i.e. carbon-coated TiO2and TiO2-mounted exfoliated graphite. Carbon-coated TiO2shows effective photocatalytic activity for methylene blue (MB) decomposition. Carbon layer coated on TiO2particle was experimentally proved to adsorb methylene blue from its aqueous solution and transfer it to TiO2surface to decompose photocatalytically. Carbon coating was found to stabilize anatase-type structure at high temperatures and, as a consequence, high crystallinity of anatase could be obtained, which had high activity. TiO2-mounted exfoliated graphite could work as the absorbent of heavy oil and also as the catalyst for the decomposition of absorbed heavy oil under UV irradiation.