基于一步法合成的 SnO2 中空纳米球的卓越三乙胺传感性能

IF 4.8 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
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引用次数: 0

摘要

由于三乙胺(TEA)对环境安全和人类健康的严重危害,合成用于检测三乙胺的高性能气敏材料意义重大。然而,如何通过经济、高效的方法合成出低温下高灵敏度检测三乙胺的传感器仍是一项挑战。本研究采用简便、低成本的水热法一步制备了中空结构二氧化锡(HS-SnO2)纳米球,该纳米球具有优异的三乙醇胺传感性能,不仅对 100 ppm 三乙醇胺具有超高响应(127.75)和良好的选择性,而且响应和恢复时间快(17/28 s),检测阈值低(1 ppm),并在 225 ℃ 的相对较低的最佳工作温度下保持稳定。优异的气体敏化性能归功于多孔空心结构中丰富的氧空位,这些空位为提高氧气吸附以及三乙醇胺与氧物种的反应提供了丰富的活性位点。这项工作为制造工业应用中的高性能三乙醇胺传感器提供了一种有效而经济的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Superior triethylamine-sensing properties based on SnO2 hollow nanospheres synthesized via one-step process

Due to serious harm of triethylamine (TEA) to environmental safety and human health, it is significant to synthesize gas-sensitive materials with high performance for TEA detection. However, it is still a challenge to achieve high-sensitivity detection of TEA at low temperature for a sensor synthesized through an economical and efficient method. In this work, hollow-structured SnO2 (HS-SnO2) nanospheres have been fabricated by a facile, low-cost hydrothermal method in one step, which exhibit superior TEA-sensing properties, including not only ultrahigh response (127.75) for 100 ​ppm TEA, good selectivity, but also fast response and recovery time (17/28 ​s), low detection threshold (1 ​ppm) and robust stability at a relatively low optimum operational temperature of 225 ​°C. The excellent gas-sensitizing performances are ascribed to porous hollow structures with rich oxygen vacancies that provide abundant active sites for raising O2 adsorption and reaction of TEA and oxygen species. This work offers an effective and economical strategy for fabricating high-performance TEA sensors for industrial applications.

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来源期刊
CiteScore
8.60
自引率
2.10%
发文量
2812
审稿时长
49 days
期刊介绍: Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.
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