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首页> 外文期刊>Chemistry: A European journal >A Unique Architecture Based on 1D Semiconductor, Reduced Graphene Oxide, and Chalcogenide with Multifunctional Properties
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A Unique Architecture Based on 1D Semiconductor, Reduced Graphene Oxide, and Chalcogenide with Multifunctional Properties

机译：基于一维半导体，还原的氧化石墨烯和具有多功能特性的硫属化物的独特架构

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摘要

A unique heterostructured optoelectronic material (HOM), consisting of a reduced graphene oxide (RGO) layer with spatially distributed CdS, suspended by zinc oxide (ZnO) nanorods, is presented. The key features of this HOM are the assembly of the components in a manner so as to realize an effective integration between the constituents and the ability to modify the electronic properties of the RGO. For the first time, the location of RGO (as a suspended layer) along with the tuning of its charge-transport properties (n-/p-type) and its influence on the photo(electro)chemical processes has been examined systematically by using this ZnO/RGO/CdS HOM as a case study. The n-type RGO interlayer facilitates >100% increase in the photocurrent density and 25% increase in the photodegradation of a dye, compared to ZnO/CdS, thus demonstrating its multifunctionality. At 3.2 mAcm~(-2), this HOM architecture helps to achieve the highest photocurrent density utilizing ZnO, RGO, and CdS as building blocks in any form. The work is significant for the following reasons: i) other one dimensional (1D) oxides/chalcogenides or 1D oxides/dyes may be designed with similar architectures; ii) HOMs with tunable optical absorbance and charge-transport properties could be realized; iii) related application areas (e.g., sensing or solar fuel generation) should be greatly benefited.
机译：提出了一种独特的异质结构光电子材料（HOM），该材料由氧化锌（ZnO）纳米棒悬浮的具有空间分布的CdS的氧化石墨烯（RGO）层组成。此HOM的关键特征是组件的组装方式，以实现组件之间的有效集成以及修改RGO的电子特性的能力。首次系统地研究了RGO（作为悬浮层）的位置及其电荷传输特性（n- / p型）的调整及其对光化学过程的影响。此ZnO / RGO / CdS HOM作为案例研究。与ZnO / CdS相比，n型RGO中间层可促进染料的光电流密度增加> 100％，并促进染料的光降解增加25％，因此证明了其多功能性。在3.2 mAcm〜（-2）时，这种HOM架构利用ZnO，RGO和CdS作为任何形式的构建基块，有助于实现最高的光电流密度。这项工作之所以有意义，是因为以下原因：i）其他一维（1D）氧化物/硫族化物或一维氧化物/染料可以采用相似的结构进行设计; ii）可以实现具有可调光吸收和电荷传输特性的HOM; iii）相关的应用领域（例如，传感或太阳能产生）应大大受益。

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