Formic Acid Gas Sensors Based on Electrolytically Exfoliated Graphene-loaded Flame-Made Spinel Zn2SnO4 Composites

IF 0.6 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES

Chiang Mai Journal of Science Pub Date : 2023-11-30 DOI:10.12982/cmjs.2023.068

Wiphawee Jiamjai, K. Inyawilert, M. Punginsang, M. Siriwalai, A. Wisitsoraat, C. Liewhiran

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Abstract

In this w ork, effective gas-sensing material were prepared by combining spinel zinc stannate (Zn2SnO4) nanoparticles synthesized by flame spray pyrolysis and graphene produced by the electrolytic exfoliation for volatile organic acids (VOAs) detection. The effect of graphene content in the range of 0.2–5 wt% on formic acid (HCOOH)-sensing performance of Zn2SnO4 nanoparticles was evaluated. Structural, physical, and chemical properties were investigated using X-ray diffraction, Raman spectroscopy, BET-surface analysis, energy dispersive X-ray spectroscopy, and electron microscopy. From the gas-sensing test towards 0.005-0.1 vol% HCOOH in dry air at 200-400°C, the graphene-loaded Zn2SnO4 sensor with the optimal graphene content of 0.5 wt% displayed the highest response of ~4970 towards HCOOH at the optimal temperature of 300°C. Moreover, it showed high HCOOH selectivity against several other VOAs, volatile organic compounds, and environmental gases. Therefore, graphene-loaded spinel Zn2SnO4 sensors could be attractive choices for selective HCOOH detection and useful for food science and industrial applications.

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基于电剥离石墨烯火焰制造的尖晶石 Zn2SnO4 复合材料的甲酸气体传感器

本研究将火焰喷射热解法合成的尖晶石锡酸锌（Zn2SnO4）纳米粒子与电解剥离法制备的石墨烯结合起来，制备了有效的气体传感材料，用于检测挥发性有机酸（VOAs）。评估了石墨烯含量（0.2-5 wt%）对 Zn2SnO4 纳米粒子的甲酸（HCOOH）传感性能的影响。采用 X 射线衍射、拉曼光谱、BET 表面分析、能量色散 X 射线光谱和电子显微镜对其结构、物理和化学特性进行了研究。通过对 200-400°C 干燥空气中 0.005-0.1 vol% HCOOH 的气体传感测试，最佳石墨烯含量为 0.5 wt% 的石墨烯负载 Zn2SnO4 传感器在最佳温度 300°C 时对 HCOOH 的响应最高，达到约 4970。此外，它对其他几种 VOAs、挥发性有机化合物和环境气体也表现出较高的 HCOOH 选择性。因此，石墨烯负载的尖晶石 Zn2SnO4 传感器可以成为选择性检测 HCOOH 的有吸引力的选择，并可用于食品科学和工业应用。

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来源期刊

Chiang Mai Journal of Science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.00

自引率

25.00%

发文量

103

审稿时长

3 months

期刊介绍： The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.