Cu-enhanced photoelectronic and ethanol sensing properties of Cu2O/Cu nanocrystals prepared by one-step controllable synthesis†,Inorganic Chemistry Frontiers

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Cu-enhanced photoelectronic and ethanol sensing properties of Cu2O/Cu nanocrystals prepared by one-step controllable synthesis†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2017-12-12 00:00:00 , DOI: 10.1039/c7qi00657h
Yao Hu _{1,

2,

3,

4} , Muwei Ji _{1,

2,

3,

4,

5} , Yiqing He _{1,

2,

3,

4} , Ziyi Liu _{1,

2,

3,

4} , Qinghua Yang _{1,

2,

3,

4} , Chaozheng Li _{4,

6,

7,

8,

9} , Jiajia Liu _{4,

6,

7,

8,

9} , Bo Li _{1,

2,

3,

4} , Jiatao Zhang _{4,

6,

7,

8,

9} , Caizhen Zhu _{3,

4,

5,

10} , Jin Wang _{1,

2,

3,

4}

Affiliation

Metal nanocrystals are considered as effective components to enhance the photoelectronic properties of semiconductors. Herein, we report the enhancement of the photoelectronic response and photoelectronic catalysis on Cu₂O by forming a Cu nanocrystal layer on its surface via a one-step approach. The photocurrent of Cu₂O-rich Cu₂O/Cu reaches 190 μA cm⁻² in the first run and is about 4 times that of pure Cu₂O. The cyclic voltammetry (CV) signal for methanol oxidation with Cu₂O/Cu gives a higher methanol oxidation peak current than with that with Cu₂O when irradiated by ultraviolet-visible light. The ethanol gas sensing performance of Cu₂O-rich Cu₂O/Cu hetero-nanocrystals is also investigated. It is shown that the sensitivity of the Cu₂O-rich Cu₂O/Cu hetero-nanocrystals is higher (4.83) than that of Cu₂O nanocrystals (3.87) at an ethanol concentration of 2000 ppm.

中文翻译：

通过一步可控合成制备的Cu ₂ O / Cu纳米晶体的Cu增强光电和乙醇感测特性†

金属纳米晶体被认为是增强半导体的光电特性的有效成分。在本文中，我们报告了通过一步法在其表面上形成Cu纳米晶体层，从而增强了对Cu ₂ O的光电响应和光电催化作用。Cu的光电流₂富O型的Cu ₂ O /铜达到190μA厘米^-2在第一次运行和为约4倍，纯Cu的₂ O.用于与铜甲醇氧化的循环伏安法（CV）信号₂ O /与使用Cu ₂相比，Cu可以提供更高的甲醇氧化峰值电流紫外线可见光照射时为O。Cu的乙醇气体感测性能₂富O型的Cu ₂ O /铜杂纳米晶体进行了研究。结果表明，在Cu的灵敏度₂富O型的Cu ₂ O /铜杂纳米晶体是高（4.83）比Cu ₂在2000 ppm的乙醇O浓度的纳米晶体（3.87）。

更新日期：2017-12-12

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