P25-Graphene Composite as a High Performance Photocatalyst
P25-Graphene Composite as a High Performance Photocatalyst
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P25-石墨烯复合材料作为高性能光催化剂
DOI：
10.1021/nn901221k
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发表时间：
2010-01-01
期刊：
影响因子：
17.1
通讯作者：
Li, Jinghong
中科院分区：
文献类型：
--
作者：
Zhang, Hao;Lv, Xiaojun;Li, Jinghong
本文采用简单的一步水热法制备了氧化石墨烯和P25化学键合的TiO2 (P25)-石墨烯纳米复合光催化剂。在水热反应过程中，实现了氧化石墨烯的还原和P25的负载。所制备的p25 -石墨烯光催化剂具有较强的染料吸附性、较长的光吸收范围，同时具有高效的电荷分离性能，这在其他tio2 -碳光催化剂中是很少报道的。因此，在亚甲基蓝的光降解中，与相同碳含量的裸P25和P25- cnts相比，P25-石墨烯的反应速率显著提高。总的来说，这项工作可以为制备作为高性能光催化剂的tio2 -碳复合材料提供新的见解，并促进其在环境保护问题上的应用。
Herein we obtained a chemically bonded TiO2 (P25)-graphene nanocomposite photocatalyst with graphene oxide and P25, using a facile one-step hydrothermal method. During the hydrothermal reaction, both of the reduction of graphene oxide and loading of P25 were achieved. The as-prepared P25-graphene photocatalyst possessed great adsorptivity of dyes, extended light absorption range, and efficient charge separation properties simultaneously, which was rarely reported in other TiO2-carbon photocatalysts. Hence, in the photodegradation of methylene blue, a significant enhancement in the reaction rate was observed with P25-graphene, compared to the bare P25 and P25-CNTs with the same carbon content. Overall, this work could provide new insights into the fabrication of a TiO2-carbon composite as high performance photocatalysts and facilitate their application in the environmental protection issues.