Plasmon-Enhanced Photoelectrochemical Current and Hydrogen Production of (MoS(2)-TiO(2))/Au Hybrids.

Plasmon-Enhanced Photoelectrochemical Current and Hydrogen Production of (MoS(2)-TiO(2))/Au Hybrids.
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(MoS2-TiO2)/Au 杂化物的等离激元增强光电化学电流和产氢

DOI:
10.1038/s41598-017-07601-1
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发表时间:
2017-08-03
期刊:
影响因子:
4.6
通讯作者:
Wang QQ
Wang QQ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li YY;Wang JH;Luo ZJ;Chen K;Cheng ZQ;Ma L;Ding SJ;Zhou L;Wang QQ

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通过在MoS 2纳米片包覆的TiO 2纳米棒阵列上负载等离子体Au纳米棒,制备了(MoS 2-TiO 2)/Au三组分杂化基底。它用于光电化学(PEC)电池和制氢的光催化剂。由于MoS 2-TiO 2异质结构之间的电荷转移,TiO 2纳米阵列的光电转换电流密度和产氢量分别提高了2.8倍和2.6倍。Au纳米棒的负载进一步提高了光化学性能。Au纳米棒的等离子体共振提供更有效的光捕获,诱导热电子注入,并加速光激发电荷分离。结果表明,一维纳米阵列和二维纳米片相结合的方法可以构建纳米杂化材料,同时利用等离子体激元纳米棒作为敏化剂可以提高半导体纳米复合材料的光化学性能。
Three component hybrid (MoS2-TiO2)/Au substrate is fabricated by loading plasmonic Au nanorods on the MoS2nanosheets coated TiO2nanorod arrays. It is used for photoelectrochemical (PEC) cell and photocatalyst for hydrogen generation. Owing to the charge transfer between the MoS2-TiO2hetero-structure, the PEC current density and hydrogen generation of TiO2nanoarrays are enhanced 2.8 and 2.6 times. The broadband photochemical properties are further enhanced after Au nanorods loading. The plasmon resonance of Au nanorods provides more effective light-harvesting, induces hot-electron injection, and accelerates photo-excited charges separation. The results have suggested a route to construct nanohybrid by combining one-dimensional arrays and two-dimensional nanosheets, meanwhile have successfully utilized plasmonic nanorods as a sensitizer to improve the photochemical properties of the semiconductor nanocomposite.
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