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Rapid synthesis of rGO-MoO3 hybrids and mechanism of enhancing sensing performance to H2S

机译:rGO-MoO3杂化物的快速合成及增强对H2S的传感性能的机制

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Hybrids of reduced graphene oxide (rGO)-MoO3 nanorods were synthesized successfully by a facile in situ solution growth method under a relatively low temperature of 150 degrees C for 1 h. The structure and properties of the hybrids have been characterized by XRD, SEM, TEM, Raman, PL and XPS analysis. The sensing performance of pure MoO3 and rGO-MoO3 hybrids to H2S were examined, the results indicate that the hybrids exhibit higher response and lower operating temperature compared with the pure MoO3 nanorods, especially, the 2.5 wt% rGO-MoO3 hybrid exhibits the highest sensitivity and the fastest response to H2S, which makes them promising candidates in the field of gas sensors for detection of H2S gas. The sensing mechanism for MoO3 to H2S which is enhanced is also discussed in detail from rGO action in the hybrid and formation of a hetero-junction at the interface of the hybrid.
机译:还原氧化石墨烯(rGO)-MoO3纳米棒的杂化体是通过一种简便的原位溶液生长方法在相对较低的150摄氏度的温度下成功地合成1小时。通过XRD,SEM,TEM,拉曼,PL和XPS分析表征了杂种的结构和性质。研究了纯MoO3和rGO-MoO3杂化物对H2S的传感性能,结果表明,与纯MoO3纳米棒相比,杂化物表现出更高的响应和更低的工作温度,尤其是2.5 wt%rGO-MoO3杂化物表现出最高的灵敏度。以及对H2S的最快响应,这使其成为用于检测H2S气体的气体传感器领域的有希望的候选者。还从rGO在杂化材料中的作用以及杂化材料在界面处形成异质结的角度详细讨论了MoO3对H2S增强的传感机制。

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