Fabrication of TiO(2) Nanosheet Aarrays/Graphene/Cu(2)O Composite Structure for Enhanced Photocatalytic Activities.
Fabrication of TiO(2) Nanosheet Aarrays/Graphene/Cu(2)O Composite Structure for Enhanced Photocatalytic Activities.
复制标题
制备 TiO2 纳米片阵列/石墨烯/Cu2O 复合结构以增强光催化活性
DOI：
10.1186/s11671-017-2088-7
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发表时间：
2017-12
影响因子：
--
通讯作者：
Wei M
中科院分区：
文献类型：
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作者：
Huang J;Fu K;Deng X;Yao N;Wei M
通过在石墨烯（G）修饰的TiO 2纳米片阵列（NSAs）上包覆Cu 2 O，在碳纤维上制备了TiO 2 NSAs/graphene/Cu 2 O光催化剂。本论文的研究重点在于构建复合结构并探讨其光催化性能提高的原因。对合成产物的形貌、结构和光催化性能进行了表征。实验结果表明，较好的光催化性能归因于以下原因。首先，在碳布上制备的TiO 2 NSA/石墨烯/Cu 2 O复合结构可以形成3D结构，其可以提供更高的比表面积并增强光吸收。第二，石墨烯作为电子阱可以接受来自光激发的Cu 2 O的光电子，这将减少复合。第三，TiO 2纳米片可以提供更有利的载流子输运通道，减少载流子的复合。最后，Cu 2 O可以扩展光吸收范围。
TiO2 NSAs/graphene/Cu2O was fabricated on the carbon fiber to use as photocastalysts by coating Cu2O on the graphene (G) decorated TiO2 nanosheet arrays (NSAs). The research focus on constructing the composite structure and investigating the reason to enhance the photocatalytic ability. The morphological, structural, and photocatalytic properties of the as-synthesized products were characterized. The experimental results indicate that the better photocatalytic performance is ascribed to the following reasons. First, the TiO2 NSAs/graphene/Cu2O composite structure fabricated on the carbon cloth can form a 3D structure which can provide a higher specific surface area and enhance the light absorption. Second, the graphene as an electron sink can accept the photoelectrons from the photoexcited Cu2O which will reduce the recombination. Third, the TiO2 nanosheet can provide more favorable carrier transportation channel which can reduce the recombination of carriers. Finally, the Cu2O can extend the light absorption range.