Purpose

This paper aims to focus on the basic principle of WO₃ gas sensors to achieve high gas-sensing performance with good stability and repeatability. Metal oxide-based gas sensors are widely used for monitoring toxic gas leakages in the environment, industries and households. For better livelihood and a healthy environment, it is extremely helpful to have sensors with higher accuracy and improved sensing features.

Design/methodology/approach

In the present review, the authors focus on recent synthesis methods of WO₃-based gas sensors to enhance sensing features towards toxic gases.

Findings

This work has proved that the synthesis method led to provide different morphologies of nanostructured WO₃-based material in turn to improve gas sensing performance along with its sensing mechanism.

Originality/value

In this work, the authors reviewed challenges and possibilities associated with the nanostructured WO₃-based gas sensors to trace toxic gases such as ammonia, H₂S and NO₂ for future research.

中文翻译：

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基于纳米结构的 WO3 气体传感器：简短回顾

目的

本文旨在重点介绍WO ₃气体传感器的基本原理，以实现具有良好稳定性和重复性的高气体传感性能。基于金属氧化物的气体传感器广泛用于监测环境、工业和家庭中的有毒气体泄漏。为了更好的生活和健康的环境，拥有更高精度和改进的传感功能的传感器是非常有帮助的。

设计/方法/方法

在本综述中，作者重点介绍了基于WO ₃的气体传感器的最新合成方法，以增强对有毒气体的传感特性。

发现

这项工作已经证明，该合成方法导致提供不同形态的纳米结构WO ₃基材料，进而改善气体传感性能及其传感机制。

原创性/价值

在这项工作中，作者回顾了与基于纳米结构 WO ₃的气体传感器相关的挑战和可能性，以追踪有毒气体，如氨、H ₂ S 和 NO ₂以供未来研究使用。