Microwave-assisted hydrothermal synthesis of Sn3O4 nanosheet/rGO planar heterostructure for efficient photocatalytic hydrogen generation

Microwave-assisted hydrothermal synthesis of Sn3O4 nanosheet/rGO planar heterostructure for efficient photocatalytic hydrogen generation
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微波辅助水热合成 Sn3O4 纳米片/rGO 平面异质结构用于高效光催化制氢

DOI:
10.1016/j.apcatb.2018.01.055
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发表时间:
2018-07
期刊:
Applied Catalysis B: Environmental
影响因子:
--
通讯作者:
Hong Liu
Hong Liu
中科院分区:
其他
文献类型:
--
作者:
Xin Yu;Zhenhuan Zhao;Dehui Sun;Na Ren;Jinghua Yu;Ruiqi Yang;Hong Liu

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采用微波辅助水热法(MHM)制备了由Sn 3 O 4纳米片和二维还原氧化石墨烯(rGO)组成的平面异质结构。该平面异质结构具有较宽的光吸收范围和较短的电荷转移距离,因此具有良好的光催化活性和稳定性,析氢速率为20 mmol/g/h。光电化学表征表明,平面异质结构具有更好的电荷分离效率和界面电荷转移动力学,光致发光(PL)光谱和时间分辨PL衰减分析也证实了这一点。结果表明,异质结中光生载流子的寿命增加。本工作提供了一种新的平面异质结构光催化制氢的设计,通过简单的合成。
The present work reports the facile synthesis of a planar heterostructure consisted of Sn3O4nanosheet and 2-dimentional reduced graphene oxide (rGO) through microwave-assisted hydrothermal method (MHM). The planar heterostructure features with extended light absorption range and shortened charge transfer distance, and hence exhibits excellent photocatalytic activity and stability, with a hydrogen evolution rate of 20 mmol/g/h. The photoelectrochemical characterization shows that the planar heterostructure has better charge separation efficiency and interfacial charge transfer kinetics, which are also demonstrated by photoluminescence (PL) spectra and time-resolved PL decay analysis. It is found that the lifetimes of the photocarriers increased in the heterostructure. This work provides a new design of planar heterostructure for photocatalytic hydrogen generation through facile synthesis.
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