High-performance and rapid-response n-butanol sensor based on ZnO/SnO2 heterojunction

IF 5.5 3区 工程技术 Q1 ENGINEERING, CHEMICAL
Yan Chen, Qingsong Luo, Yu Wan, Shuang Gao, Yanting Wang, Changhao Feng
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引用次数: 0

Abstract

Background

The rapid identification of n-butanol holds substantial significance; however, the current response speed of n-butanol gas sensors is relatively slow. The ZnO/SnO2 composite nanofibers present a considerable prospect as a suitable alternative for conventional n-butanol sensors.

Methods

Pure SnO2 and composite nanofibers composed of ZnO/SnO2 with distinct molar ratios were crafted via the electrospinning technique. The microstructure and components of these composite nanofibers were analyzed and identified using XRD and SEM.

Significant findings

The ZnO/SnO2 composite nanofibers-based gas sensor (ZS2) exhibited enhanced response towards n-butanol, achieving a high response of 29.68 to 30 ppm n-butanol at 150 °C, which was 3.3 times greater than that of SnO2. Moreover, the sensor also showcased a swift response time, taking just 1 s to react. Furthermore, the ZS2 sensor had a lower potential limit for detecting n-butanol, with a value of 0.27 ppm. The good repeatability and stability were also confirmed in this study. The successful creation of heterojunctions is thought to be contributing factors to ZS2 nanofibers’ superior sensing capabilities. Therefore, ZnO/SnO2 composite nanofibers can be considered as a promising candidate for sensing materials in practical applications.

Abstract Image

基于ZnO/SnO2异质结的高性能快速响应正丁醇传感器
正丁醇的快速鉴定具有重要意义;但目前正丁醇气体传感器的响应速度相对较慢。ZnO/SnO2复合纳米纤维作为传统正丁醇传感器的替代材料,具有广阔的应用前景。方法采用静电纺丝法制备SnO2纯纳米纤维和不同摩尔比的ZnO/SnO2复合纳米纤维。利用XRD和SEM对复合纳米纤维的微观结构和组成进行了分析和鉴定。ZnO/SnO2复合纳米纤维气体传感器(ZS2)对正丁醇的响应增强,在150℃下达到29.68 ~ 30 ppm正丁醇的高响应,是SnO2的3.3倍。此外,该传感器还展示了快速的响应时间,仅需1秒即可做出反应。此外,ZS2传感器检测正丁醇的电位下限较低,为0.27 ppm。结果表明,该方法具有良好的重复性和稳定性。异质结的成功形成被认为是ZS2纳米纤维具有优越传感能力的重要因素。因此,ZnO/SnO2复合纳米纤维在实际应用中可以被认为是一种很有前途的传感材料。
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来源期刊
CiteScore
9.10
自引率
14.00%
发文量
362
审稿时长
35 days
期刊介绍: Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.
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